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atom.xml
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<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<title>LVPHP</title>
<link href="/atom.xml" rel="self"/>
<link href="http://www.lvphp.com/"/>
<updated>2017-02-21T02:20:39.504Z</updated>
<id>http://www.lvphp.com/</id>
<author>
<name>lvphpwb</name>
</author>
<generator uri="http://hexo.io/">Hexo</generator>
<entry>
<title>试试zookeeper</title>
<link href="http://www.lvphp.com/2017/02/20/zookeeper/"/>
<id>http://www.lvphp.com/2017/02/20/zookeeper/</id>
<published>2017-02-20T10:51:31.000Z</published>
<updated>2017-02-21T02:20:39.504Z</updated>
<content type="html"><![CDATA[<h4 id="简介"><a href="#简介" class="headerlink" title="简介"></a>简介</h4><p>Zookeeper 分布式服务框架是 Apache Hadoop 的一个子项目，它主要是用来解决分布式应用中经常遇到的一些数据管理问题，如：统一命名服务、状态同步服务、集群管理、分布式应用配置项的管理等</p>
<h4 id="安装和配置详解"><a href="#安装和配置详解" class="headerlink" title="安装和配置详解"></a>安装和配置详解</h4><p>Zookeeper的安装和配置十分简单, 既可以配置成单机模式, 也可以配置成集群模式<br>1.单机模式<br>到<a href="http://zookeeper.apache.org/releases.html" target="_blank" rel="external">官方网站</a>下载zookeeper的安装包之后, 解压到合适目录. 进入zookeeper目录下的conf子目录，复制一份zoo_sample.cfg为zoo.cfg，根据情况修改配置：<br><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line">tickTime=2000 </div><div class="line">dataDir=/home/apple/zookeeper/data </div><div class="line">dataLogDir=/home/apple/zookeeper/logs </div><div class="line">clientPort=4180</div></pre></td></tr></table></figure></p>
<p>参数说明: </p>
<ul>
<li>tickTime: zookeeper中使用的基本时间单位, 毫秒值.</li>
<li>dataDir: 数据目录. 可以是任意目录.</li>
<li>dataLogDir: log目录, 同样可以是任意目录. 如果没有设置该参数, 将使用和dataDir相同的设置.</li>
<li>clientPort: 监听client连接的端口号.<br>至此, zookeeper的单机模式已经配置好了. 启动server只需运行脚本:<figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">./bin/zkServer.sh start</div></pre></td></tr></table></figure>
</li>
</ul>
<p>Server启动之后, 就可以启动client连接server了, 执行脚本:<br><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">./bin/zkCli.sh -server localhost:4180</div></pre></td></tr></table></figure></p>
<p>2.伪集群模式<br>所谓伪集群, 是指在单台机器中启动多个zookeeper进程, 并组成一个集群. 以启动3个zookeeper进程为例.<br>将zookeeper的目录拷贝2份:<br><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div></pre></td><td class="code"><pre><div class="line">|--zookeeper1</div><div class="line">|--zookeeper2</div><div class="line">|--zookeeper3</div></pre></td></tr></table></figure></p>
<p>更改各目录下的conf/zoo.cfg的配置,例如下:<br><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div></pre></td><td class="code"><pre><div class="line">tickTime=2000 </div><div class="line">initLimit=5 </div><div class="line">syncLimit=2 </div><div class="line">dataDir=/home/apple/zookeeper0/data </div><div class="line">dataLogDir=/home/apple/zookeeper0/logs </div><div class="line">clientPort=4180</div><div class="line">server.1=127.0.0.1:8880:7770 </div><div class="line">server.2=127.0.0.1:8881:7771 </div><div class="line">server.3=127.0.0.1:8882:7772</div></pre></td></tr></table></figure></p>
<p>新增了几个参数, 其含义如下: </p>
<ul>
<li>initLimit: zookeeper集群中的包含多台server, 其中一台为leader, 集群中其余的server为follower. initLimit参数配置初始化连接时, follower和leader之间的最长心跳时间. 此时该参数设置为5, 说明时间限制为5倍tickTime, 即5*2000=10000ms=10s.</li>
<li>syncLimit: 该参数配置leader和follower之间发送消息, 请求和应答的最大时间长度. 此时该参数设置为2, 说明时间限制为2倍tickTime, 即4000ms.</li>
<li>server.X=A:B:C 其中X是一个数字, 表示这是第几号server. A是该server所在的IP地址. B配置该server和集群中的leader交换消息所使用的端口. C配置选举leader时所使用的端口. 由于配置的是伪集群模式, 所以各个server的B, C参数必须不同.<br>在之前设置的dataDir中新建myid文件, 写入一个数字, 该数字表示这是第几号server. 该数字必须和zoo.cfg文件中的server.X中的X一一对应。<br>/home/apple/zookeeper1/data/myid文件中写入1, /home/apple/zookeeper2/data/myid文件中写入2, /home/apple/zookeeper3/data/myid文件中写入3.<br>3.集群模式<br>集群模式的配置和伪集群基本一致.由于集群模式下, 各server部署在不同的机器上, 因此各server的conf/zoo.cfg文件可以完全一样.<br>下面是一个示例:<figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div></pre></td><td class="code"><pre><div class="line">tickTime=2000 </div><div class="line">initLimit=5 </div><div class="line">syncLimit=2 </div><div class="line">dataDir=/home/zookeeper/data </div><div class="line">dataLogDir=/home/zookeeper/logs </div><div class="line">clientPort=4180</div><div class="line">server.43=10.1.39.43:2888:3888</div><div class="line">server.47=10.1.39.47:2888:3888 </div><div class="line">server.48=10.1.39.48:2888:3888</div></pre></td></tr></table></figure>
</li>
</ul>
<p>示例中部署了3台zookeeper server, 分别部署在10.1.39.43, 10.1.39.47, 10.1.39.48上. 需要注意的是, 各server的dataDir目录下的myid文件中的数字必须不同.<br>10.1.39.43 server的myid为43, 10.1.39.47 server的myid为47, 10.1.39.48 server的myid为48.</p>
<h4 id="node客户端链接zookeeper"><a href="#node客户端链接zookeeper" class="headerlink" title="node客户端链接zookeeper"></a>node客户端链接zookeeper</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div><div class="line">49</div><div class="line">50</div><div class="line">51</div><div class="line">52</div><div class="line">53</div><div class="line">54</div><div class="line">55</div><div class="line">56</div><div class="line">57</div><div class="line">58</div><div class="line">59</div><div class="line">60</div><div class="line">61</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span>;</div><div class="line"><span class="keyword">const</span> zookeeper = <span class="built_in">require</span>(<span class="string">'node-zookeeper-client'</span>);</div><div class="line"><span class="keyword">const</span> client = zookeeper.createClient(<span class="string">"127.0.0.1:4180,127.0.0.1:4181,127.0.0.1:4182"</span>);</div><div class="line"><span class="function"><span class="keyword">function</span> <span class="title">createPath</span>(<span class="params">path</span>)</span>{</div><div class="line"> client.create(</div><div class="line"> path,</div><div class="line"> <span class="keyword">new</span> Buffer(<span class="string">'aaaaaaaa'</span>),</div><div class="line"> zookeeper.CreateMode.EPHEMERAL_SEQUENTIAL,</div><div class="line"> <span class="function"><span class="keyword">function</span> (<span class="params">error, path</span>) </span>{</div><div class="line"> <span class="keyword">if</span> (error) {</div><div class="line"> <span class="built_in">console</span>.log(error.stack);</div><div class="line"> <span class="keyword">return</span>;</div><div class="line"> }</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'Node: %s is created.'</span>, path);</div><div class="line"> }</div><div class="line"> );</div><div class="line">}</div><div class="line"><span class="function"><span class="keyword">function</span> <span class="title">getData</span>(<span class="params">path</span>)</span>{</div><div class="line"> client.getData(</div><div class="line"> path,</div><div class="line"> <span class="function"><span class="keyword">function</span> (<span class="params">event</span>) </span>{</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'Got event: %s.'</span>, event);</div><div class="line"> getData(path);</div><div class="line"> },</div><div class="line"> <span class="function"><span class="keyword">function</span> (<span class="params">error, data, stat</span>) </span>{</div><div class="line"> <span class="keyword">if</span> (error) {</div><div class="line"> <span class="built_in">console</span>.log(error.stack);</div><div class="line"> <span class="keyword">return</span>;</div><div class="line"> }</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'Got data: %s'</span>, data.toString(<span class="string">'utf8'</span>));</div><div class="line"> }</div><div class="line"> );</div><div class="line">}</div><div class="line"><span class="function"><span class="keyword">function</span> <span class="title">listChildren</span>(<span class="params">path</span>) </span>{</div><div class="line"> client.getChildren(</div><div class="line"> path,</div><div class="line"> <span class="function"><span class="keyword">function</span> (<span class="params">event</span>) </span>{</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'Got watcher event: %s'</span>, event.getPath());</div><div class="line"> listChildren(path);</div><div class="line"> },</div><div class="line"> <span class="function"><span class="keyword">function</span> (<span class="params">error, children, stat</span>) </span>{</div><div class="line"> <span class="keyword">if</span> (error) {</div><div class="line"> <span class="built_in">console</span>.log(</div><div class="line"> <span class="string">'Failed to list children of %s due to: %s.'</span>,</div><div class="line"> path,</div><div class="line"> error</div><div class="line"> );</div><div class="line"> <span class="keyword">return</span>;</div><div class="line"> }</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'Children of %s are: %j.'</span>, path, children);</div><div class="line"> }</div><div class="line"> );</div><div class="line">}</div><div class="line"></div><div class="line">client.once(<span class="string">'connected'</span>, <span class="function"><span class="keyword">function</span> (<span class="params"></span>) </span>{</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'Connected to ZooKeeper.'</span>);</div><div class="line"> createPath(<span class="string">"/test/node4"</span>);</div><div class="line"> listChildren(<span class="string">"/test"</span>);</div><div class="line">});</div><div class="line"></div><div class="line">client.connect();</div></pre></td></tr></table></figure>
<h4 id="node-server使用zookeeper"><a href="#node-server使用zookeeper" class="headerlink" title="node server使用zookeeper"></a>node server使用zookeeper</h4><p><a href="https://github.com/terrywh/node-utility" target="_blank" rel="external">local_address</a><br><a href="https://github.com/alexguan/node-zookeeper-client" target="_blank" rel="external">node-zookeeper-client</a><br><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div><div class="line">49</div><div class="line">50</div><div class="line">51</div><div class="line">52</div><div class="line">53</div><div class="line">54</div><div class="line">55</div><div class="line">56</div><div class="line">57</div><div class="line">58</div><div class="line">59</div><div class="line">60</div><div class="line">61</div><div class="line">62</div><div class="line">63</div><div class="line">64</div><div class="line">65</div><div class="line">66</div><div class="line">67</div><div class="line">68</div><div class="line">69</div><div class="line">70</div><div class="line">71</div><div class="line">72</div><div class="line">73</div><div class="line">74</div><div class="line">75</div><div class="line">76</div><div class="line">77</div><div class="line">78</div><div class="line">79</div><div class="line">80</div><div class="line">81</div><div class="line">82</div><div class="line">83</div><div class="line">84</div><div class="line">85</div><div class="line">86</div><div class="line">87</div><div class="line">88</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span>;</div><div class="line"><span class="keyword">const</span> program = <span class="built_in">require</span>(<span class="string">"commander"</span>),</div><div class="line"> events = <span class="built_in">require</span>(<span class="string">'events'</span>),</div><div class="line"> fs = <span class="built_in">require</span>(<span class="string">"fs"</span>),</div><div class="line"> util = <span class="built_in">require</span>(<span class="string">"util"</span>),</div><div class="line"> debug = <span class="built_in">require</span>(<span class="string">'debug'</span>)(<span class="string">"server"</span>),</div><div class="line"> local_address = <span class="built_in">require</span>(<span class="string">"./lib/local_address"</span>),</div><div class="line"> zookeeper = <span class="built_in">require</span>(<span class="string">'node-zookeeper-client'</span>),</div><div class="line"> net = <span class="built_in">require</span>(<span class="string">'net'</span>);</div><div class="line">program</div><div class="line"> .version(<span class="string">'0.0.1'</span>)</div><div class="line"> .usage(<span class="string">'[options] <file ...>'</span>)</div><div class="line"> .option(<span class="string">'-e, --env [develop|test|bjac]'</span>, <span class="string">'Run ENV'</span>)</div><div class="line"> .parse(process.argv);</div><div class="line"></div><div class="line"><span class="keyword">if</span>(<span class="keyword">typeof</span> program.env == <span class="string">"undefined"</span> ){</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">"argv error"</span>);</div><div class="line"> process.exit();</div><div class="line">}</div><div class="line"></div><div class="line"><span class="keyword">let</span> _env = program.env;</div><div class="line"></div><div class="line"><span class="keyword">let</span> configfile = __dirname + <span class="string">"/config/config_"</span> + _env + <span class="string">".js"</span>;</div><div class="line"><span class="keyword">if</span>(!fs.existsSync(configfile)){</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">"no config file"</span>);</div><div class="line"> process.exit();</div><div class="line">}</div><div class="line"><span class="keyword">var</span> Config = <span class="built_in">require</span>(configfile);</div><div class="line"><span class="keyword">let</span> nodename = local_address();</div><div class="line"></div><div class="line"><span class="keyword">var</span> Server = <span class="function"><span class="keyword">function</span>(<span class="params"></span>)</span>{</div><div class="line"> <span class="keyword">let</span> self = <span class="keyword">this</span>;</div><div class="line"> self.ready = <span class="literal">false</span>;</div><div class="line"> self.name = nodename;</div><div class="line"> self.connectZK();</div><div class="line"> self.once(<span class="string">"ready"</span>, <span class="function"><span class="keyword">function</span>(<span class="params"></span>)</span>{</div><div class="line"> self.ready = <span class="literal">true</span>;</div><div class="line"> self.init();</div><div class="line"> });</div><div class="line">};</div><div class="line">util.inherits(Server, events.EventEmitter);</div><div class="line">Server.prototype.connectZK = <span class="function"><span class="keyword">function</span> (<span class="params"></span>) </span>{</div><div class="line"> <span class="keyword">let</span> self = <span class="keyword">this</span>;</div><div class="line"> <span class="keyword">let</span> zk = self.zk = zookeeper.createClient(Config.connectionString, Config.zkOptions);</div><div class="line"> zk.once(<span class="string">'connected'</span>, <span class="function"><span class="keyword">function</span> (<span class="params"></span>) </span>{</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'Connected to ZooKeeper.'</span>);</div><div class="line"> createPath(<span class="string">"/test/"</span>+self.name, <span class="keyword">new</span> Buffer(self.name+<span class="string">":"</span>+Config.port));</div><div class="line"> });</div><div class="line"> zk.on(<span class="string">"error"</span>, <span class="function"><span class="keyword">function</span>(<span class="params">error</span>)</span>{</div><div class="line"> <span class="built_in">console</span>.log(error);</div><div class="line"> self.emit(<span class="string">"error"</span>, error);</div><div class="line"> });</div><div class="line"> zk.connect();</div><div class="line"> <span class="function"><span class="keyword">function</span> <span class="title">createPath</span>(<span class="params">path, data</span>)</span>{</div><div class="line"> self.zk.create(</div><div class="line"> path,</div><div class="line"> data,</div><div class="line"> zookeeper.CreateMode.EPHEMERAL_SEQUENTIAL,</div><div class="line"> <span class="function"><span class="keyword">function</span> (<span class="params">error, path</span>) </span>{</div><div class="line"> <span class="keyword">if</span> (error) {</div><div class="line"> <span class="built_in">console</span>.log(error.stack);</div><div class="line"> self.emit(<span class="string">"error"</span>, error);</div><div class="line"> <span class="keyword">return</span>;</div><div class="line"> }</div><div class="line"> self.emit(<span class="string">"ready"</span>);</div><div class="line"> }</div><div class="line"> );</div><div class="line"> }</div><div class="line">};</div><div class="line">Server.prototype.init = <span class="function"><span class="keyword">function</span>(<span class="params"></span>)</span>{</div><div class="line"> <span class="keyword">let</span> self = <span class="keyword">this</span>;</div><div class="line"> self.server = net.createServer(<span class="function">(<span class="params">c</span>) =></span> {</div><div class="line"> <span class="comment">// 'connection' listener</span></div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'client connected'</span>);</div><div class="line"> c.on(<span class="string">'end'</span>, () => {</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'client disconnected'</span>);</div><div class="line"> });</div><div class="line"> c.write(<span class="string">'hello\r\n'</span>);</div><div class="line"> c.pipe(c);</div><div class="line"> });</div><div class="line"> self.server.on(<span class="string">'error'</span>, (err) => {</div><div class="line"> <span class="keyword">throw</span> err;</div><div class="line"> });</div><div class="line"> self.server.listen(Config.port, () => {</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'server bound'</span>);</div><div class="line"> });</div><div class="line">}</div><div class="line"><span class="keyword">var</span> sv = <span class="keyword">new</span> Server();</div></pre></td></tr></table></figure></p>
<h4 id="列出所有节点"><a href="#列出所有节点" class="headerlink" title="列出所有节点"></a>列出所有节点</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span>;</div><div class="line"><span class="keyword">const</span> zookeeper = <span class="built_in">require</span>(<span class="string">'node-zookeeper-client'</span>);</div><div class="line"><span class="keyword">const</span> client = zookeeper.createClient(<span class="string">"127.0.0.1:4180,127.0.0.1:4181,127.0.0.1:4182"</span>);</div><div class="line"><span class="function"><span class="keyword">function</span> <span class="title">listChildren</span>(<span class="params">path</span>) </span>{</div><div class="line"> client.getChildren(</div><div class="line"> path,</div><div class="line"> <span class="function"><span class="keyword">function</span> (<span class="params">event</span>) </span>{</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'Got watcher event: %s'</span>, event.getPath());</div><div class="line"> listChildren(path);</div><div class="line"> },</div><div class="line"> <span class="function"><span class="keyword">function</span> (<span class="params">error, children, stat</span>) </span>{</div><div class="line"> <span class="keyword">if</span> (error) {</div><div class="line"> <span class="built_in">console</span>.log(</div><div class="line"> <span class="string">'Failed to list children of %s due to: %s.'</span>,</div><div class="line"> path,</div><div class="line"> error</div><div class="line"> );</div><div class="line"> <span class="keyword">return</span>;</div><div class="line"> }</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'Children of %s are: %j.'</span>, path, children);</div><div class="line"> }</div><div class="line"> );</div><div class="line">}</div><div class="line">client.once(<span class="string">'connected'</span>, <span class="function"><span class="keyword">function</span> (<span class="params"></span>) </span>{</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">'Connected to ZooKeeper.'</span>);</div><div class="line"> listChildren(<span class="string">"/test"</span>);</div><div class="line">});</div><div class="line"></div><div class="line">client.connect();</div></pre></td></tr></table></figure>
<h4 id="说明"><a href="#说明" class="headerlink" title="说明"></a>说明</h4><p>zookeeper创建目录节点的时候有四种模式： </p>
<ul>
<li>PERSISTENT：持久化目录节点，存储的数据不会丢失。</li>
<li>PERSISTENT_SEQUENTIAL：顺序自动编号的持久化目录节点，存储的数据不会丢失，并且根据当前已近存在的节点数自动加 1，然后返回给客户端已经成功创建的目录节点名。</li>
<li>EPHEMERAL：临时目录节点，一旦创建这个节点的客户端与服务器端口也就是session 超时，这种节点会被自动删除。</li>
<li>EPHEMERAL_SEQUENTIAL：临时自动编号节点，一旦创建这个节点的客户端与服务器端口也就是session 超时，这种节点会被自动删除，并且根据当前已近存在的节点数自动加 1，然后返回给客户端已经成功创建的目录节点名。<br>ZooKeeper中一共由三种方法可以实现Watch，分别为getData、exists和getChildren，但这三种方法仅仅监控一次数据变化，要想永久监控，需要在对应的事件回调中继续增加watch。</li>
</ul>
]]></content>
<summary type="html">
<h4 id="简介"><a href="#简介" class="headerlink" title="简介"></a>简介</h4><p>Zookeeper 分布式服务框架是 Apache Hadoop 的一个子项目，它主要是用来解决分布式应用中经常遇到的一些数据管理问题，如：
</summary>
<category term="zookeeper,node,配置" scheme="http://www.lvphp.com/tags/zookeeper-node-%E9%85%8D%E7%BD%AE/"/>
</entry>
<entry>
<title>初试 php-swool</title>
<link href="http://www.lvphp.com/2016/12/18/php-swool/"/>
<id>http://www.lvphp.com/2016/12/18/php-swool/</id>
<published>2016-12-18T15:27:23.000Z</published>
<updated>2016-12-20T09:23:23.044Z</updated>
<content type="html"><![CDATA[<h4 id="介绍"><a href="#介绍" class="headerlink" title="介绍"></a>介绍</h4><p>swool官网网站：<a href="http://www.swoole.com/" target="_blank" rel="external">swool</a><br>PHP的异步、并行、高性能网络通信引擎，使用纯C语言编写，提供了PHP语言的异步多线程服务器，异步TCP/UDP网络客户端，异步MySQL，异步Redis，数据库连接池，AsyncTask，消息队列，毫秒定时器，异步文件读写，异步DNS查询。<br>Swoole内置了Http/WebSocket服务器端/客户端、Http2.0服务器端。<br>Swoole可以广泛应用于互联网、移动通信、企业软件、云计算、网络游戏、物联网（IOT）、车联网、智能家居等领域。 使用PHP+Swoole作为网络通信框架，可以使企业IT研发团队的效率大大提升，更加专注于开发创新产品。 </p>
<h4 id="一个简单的http-server"><a href="#一个简单的http-server" class="headerlink" title="一个简单的http server"></a>一个简单的http server</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div></pre></td><td class="code"><pre><div class="line">$serv = <span class="keyword">new</span> Swoole\Http\Server(<span class="string">"127.0.0.1"</span>, <span class="number">9502</span>);</div><div class="line">$serv->on(<span class="string">'Request'</span>, <span class="function"><span class="keyword">function</span><span class="params">($request, $response)</span> </span>{</div><div class="line"> var_dump($request->get);</div><div class="line"> var_dump($request->post);</div><div class="line"> var_dump($request->cookie);</div><div class="line"> var_dump($request->files);</div><div class="line"> var_dump($request->header);</div><div class="line"> var_dump($request->server);</div><div class="line"> $response->cookie(<span class="string">"User"</span>, <span class="string">"Swoole"</span>);</div><div class="line"> $response->header(<span class="string">"X-Server"</span>, <span class="string">"Swoole"</span>);</div><div class="line"> $response->end(<span class="string">"<h1>Hello Swoole!</h1>"</span>);</div><div class="line">});</div><div class="line">$serv->start();</div></pre></td></tr></table></figure>
<h4 id="使用中的修改"><a href="#使用中的修改" class="headerlink" title="使用中的修改"></a>使用中的修改</h4><h5 id="项目结构"><a href="#项目结构" class="headerlink" title="项目结构"></a>项目结构</h5><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div></pre></td><td class="code"><pre><div class="line">+/config--------配置文件</div><div class="line"> |/config_develop.php</div><div class="line"> |/config_test.php</div><div class="line"> |/config_product.php</div><div class="line"> |/swool.lvphp.com.conf</div><div class="line">+/controller----控制器</div><div class="line"> |/IndexController.php</div><div class="line">+/process-------进程</div><div class="line"> |/Worker.php worker进程</div><div class="line"> |/Tasker.php task进程</div><div class="line">+/libs----------类库文件</div><div class="line"> |/Application.php</div><div class="line"> |/RedisDB.php</div><div class="line">+/public--------静态文件</div><div class="line"> |/index.html</div><div class="line"> |/favicon.ico</div><div class="line">+server.php-----启动文件</div></pre></td></tr></table></figure>
<h5 id="启动程序"><a href="#启动程序" class="headerlink" title="启动程序"></a>启动程序</h5><figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div></pre></td><td class="code"><pre><div class="line">server.php</div><div class="line"><span class="meta"><?php</span></div><div class="line">define(<span class="string">"ROOT_PATH"</span>, dirname(<span class="keyword">__FILE__</span>));</div><div class="line">define(<span class="string">"LOG_NAME"</span>, <span class="string">"swool.lvphp.com"</span>);</div><div class="line">define(<span class="string">"LOG_PATH"</span>, <span class="string">"/data/logs/php/"</span>);</div><div class="line">define(<span class="string">"API_CALLER"</span>, <span class="string">"swool"</span>);</div><div class="line"><span class="comment">//note 加载配置文件</span></div><div class="line">$server_type = get_cfg_var(<span class="string">'yaf.environ'</span>);</div><div class="line">$conf_file = ROOT_PATH . <span class="string">"/config/config_{$server_type}.php"</span>;</div><div class="line"><span class="keyword">if</span>(!is_file($conf_file)){</div><div class="line"> <span class="keyword">exit</span>(<span class="string">"no config file"</span>);</div><div class="line">}</div><div class="line"><span class="keyword">require</span>(ROOT_PATH . <span class="string">'/libs/Application.php'</span>);</div><div class="line">Application::load(<span class="keyword">array</span>(<span class="string">"dir"</span>=><span class="keyword">array</span>(ROOT_PATH . <span class="string">"/controller"</span>, ROOT_PATH . <span class="string">"/libs"</span>, ROOT_PATH . <span class="string">"/process"</span>), <span class="string">"file"</span>=><span class="keyword">array</span>(<span class="string">"Config"</span>=>$conf_file)));</div><div class="line"></div><div class="line"><span class="class"><span class="keyword">class</span> <span class="title">HttpServer</span></span>{</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $instance;</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">($conf)</span> </span>{</div><div class="line"> <span class="comment">//note 开启服务</span></div><div class="line"> $http = <span class="keyword">new</span> swoole_http_server(Config::SWOOL_ADDR, Config::SWOOL_PORT);</div><div class="line"> $http->set($conf);</div><div class="line"> $http->on(<span class="string">"start"</span>, <span class="function"><span class="keyword">function</span><span class="params">()</span></span>{ cli_set_process_title(Config::SERVER_NAME . <span class="string">"-master"</span>); });</div><div class="line"> $http->on(<span class="string">'WorkerStart'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($serv, $worker_id)</span></span>{</div><div class="line"> <span class="keyword">if</span>($worker_id >= $serv->setting[<span class="string">'worker_num'</span>]) {</div><div class="line"> cli_set_process_title(Config::SERVER_NAME . <span class="string">"-task-"</span> . $worker_id);</div><div class="line"> <span class="comment">//note task初始化</span></div><div class="line"> Tasker::start($serv, $worker_id);</div><div class="line"> } <span class="keyword">else</span> {</div><div class="line"> cli_set_process_title(Config::SERVER_NAME . <span class="string">"-worker-"</span> . $worker_id);</div><div class="line"> <span class="comment">//note worker初始化</span></div><div class="line"> Worker::start($serv, $worker_id);</div><div class="line"> }</div><div class="line"> });</div><div class="line"> $http->on(<span class="string">"request"</span>, <span class="string">"Application::onRequest"</span>); <span class="comment">//note 处理请求</span></div><div class="line"> $http->on(<span class="string">"task"</span>, <span class="string">"Tasker::onTask"</span>); <span class="comment">//note 处理task</span></div><div class="line"> $http->on(<span class="string">"finish"</span>, <span class="string">"Worker::onFinish"</span>); <span class="comment">//note task finish</span></div><div class="line"> $http->start();</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">getInstance</span><span class="params">($conf)</span> </span>{</div><div class="line"> <span class="keyword">if</span> (!<span class="keyword">self</span>::$instance) {</div><div class="line"> <span class="keyword">self</span>::$instance = <span class="keyword">new</span> HttpServer($conf);</div><div class="line"> }</div><div class="line"> <span class="keyword">return</span> <span class="keyword">self</span>::$instance;</div><div class="line"> }</div><div class="line">}</div><div class="line">HttpServer::getInstance(Config::$swool);</div></pre></td></tr></table></figure>
<h5 id="配置文件"><a href="#配置文件" class="headerlink" title="配置文件"></a>配置文件</h5><figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div></pre></td><td class="code"><pre><div class="line">config_develop.php</div><div class="line"><span class="meta"><?php</span></div><div class="line"><span class="class"><span class="keyword">class</span> <span class="title">Config</span></span></div><div class="line">{</div><div class="line"> <span class="keyword">const</span> ENV = <span class="string">"beta"</span>;</div><div class="line"></div><div class="line"> <span class="keyword">const</span> SERVER_NAME = <span class="string">"swool"</span>;</div><div class="line"> <span class="keyword">const</span> SWOOL_ADDR = <span class="string">"0.0.0.0"</span>;</div><div class="line"> <span class="keyword">const</span> SWOOL_PORT = <span class="number">9505</span>;</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $swool = <span class="keyword">array</span>(</div><div class="line"> <span class="string">"max_request"</span> => <span class="number">100000</span>,</div><div class="line"> <span class="string">"heartbeat_idle_time"</span> => <span class="number">600</span>,</div><div class="line"> <span class="string">"worker_num"</span> => <span class="number">4</span>,</div><div class="line"> <span class="string">"task_worker_num"</span> => <span class="number">1</span>,</div><div class="line"> <span class="string">"heartbeat_check_interval"</span> => <span class="number">60</span>,</div><div class="line"> <span class="string">"dispatch_mode"</span> => <span class="number">1</span>,</div><div class="line"> <span class="string">"log_file"</span> => <span class="string">"/data/logs/php/swool.lvphp.com.log"</span>,</div><div class="line"> <span class="string">"log_level"</span> => <span class="number">4</span>,</div><div class="line"> <span class="string">"daemonize"</span> => <span class="number">0</span></div><div class="line"> );</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $redis = <span class="keyword">array</span>(</div><div class="line"> <span class="string">"cache.read"</span> => <span class="keyword">array</span>(</div><div class="line"> <span class="string">"name"</span> => <span class="string">"cache.read"</span>,</div><div class="line"> <span class="string">"host"</span> => <span class="string">"127.0.0.1"</span>,</div><div class="line"> <span class="string">"port"</span> => <span class="string">"14000"</span>,</div><div class="line"> <span class="string">"pwd"</span> => <span class="string">"lvphp"</span>,</div><div class="line"> <span class="string">"timeout"</span> => <span class="number">3</span>,</div><div class="line"> <span class="string">"prefix"</span> => <span class="string">"cache:"</span>,</div><div class="line"> )</div><div class="line"> );</div><div class="line">}</div></pre></td></tr></table></figure>
<figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div></pre></td><td class="code"><pre><div class="line">swool.lvphp.com.conf</div><div class="line">server {</div><div class="line"> listen <span class="number">80</span>;</div><div class="line"> server_name swool.lvphp.com;</div><div class="line"> root /data/htdocs/swool.lvphp.com/<span class="keyword">public</span>/;</div><div class="line"> index index.html;</div><div class="line"></div><div class="line"> location / {</div><div class="line"> <span class="keyword">if</span> (!-e $request_filename) {</div><div class="line"> proxy_pass http:<span class="comment">//127.0.0.1:9505;</span></div><div class="line"> }</div><div class="line"> }</div><div class="line"> <span class="comment">#access_log /data/logs/nginx/swool.lvphp.com.access.log main;</span></div><div class="line">}</div></pre></td></tr></table></figure>
<h4 id="类库"><a href="#类库" class="headerlink" title="类库"></a>类库</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div><div class="line">49</div><div class="line">50</div><div class="line">51</div><div class="line">52</div><div class="line">53</div><div class="line">54</div><div class="line">55</div><div class="line">56</div><div class="line">57</div><div class="line">58</div><div class="line">59</div><div class="line">60</div><div class="line">61</div><div class="line">62</div><div class="line">63</div><div class="line">64</div><div class="line">65</div><div class="line">66</div><div class="line">67</div><div class="line">68</div><div class="line">69</div><div class="line">70</div><div class="line">71</div><div class="line">72</div><div class="line">73</div><div class="line">74</div><div class="line">75</div><div class="line">76</div><div class="line">77</div><div class="line">78</div><div class="line">79</div><div class="line">80</div><div class="line">81</div><div class="line">82</div><div class="line">83</div><div class="line">84</div><div class="line">85</div><div class="line">86</div><div class="line">87</div><div class="line">88</div><div class="line">89</div><div class="line">90</div><div class="line">91</div><div class="line">92</div><div class="line">93</div><div class="line">94</div><div class="line">95</div><div class="line">96</div><div class="line">97</div><div class="line">98</div><div class="line">99</div><div class="line">100</div><div class="line">101</div><div class="line">102</div><div class="line">103</div><div class="line">104</div><div class="line">105</div><div class="line">106</div><div class="line">107</div><div class="line">108</div><div class="line">109</div><div class="line">110</div><div class="line">111</div><div class="line">112</div><div class="line">113</div><div class="line">114</div><div class="line">115</div><div class="line">116</div><div class="line">117</div><div class="line">118</div><div class="line">119</div><div class="line">120</div><div class="line">121</div><div class="line">122</div><div class="line">123</div><div class="line">124</div><div class="line">125</div><div class="line">126</div><div class="line">127</div><div class="line">128</div><div class="line">129</div><div class="line">130</div><div class="line">131</div><div class="line">132</div><div class="line">133</div><div class="line">134</div><div class="line">135</div><div class="line">136</div><div class="line">137</div><div class="line">138</div><div class="line">139</div><div class="line">140</div><div class="line">141</div><div class="line">142</div><div class="line">143</div><div class="line">144</div><div class="line">145</div><div class="line">146</div><div class="line">147</div><div class="line">148</div><div class="line">149</div><div class="line">150</div><div class="line">151</div><div class="line">152</div><div class="line">153</div><div class="line">154</div><div class="line">155</div><div class="line">156</div><div class="line">157</div><div class="line">158</div><div class="line">159</div><div class="line">160</div><div class="line">161</div><div class="line">162</div><div class="line">163</div><div class="line">164</div><div class="line">165</div><div class="line">166</div></pre></td><td class="code"><pre><div class="line">Application.php</div><div class="line"><span class="meta"><?php</span></div><div class="line">defined(<span class="string">'ROOT_PATH'</span>) || <span class="keyword">exit</span>(<span class="string">"NO ROOT_PATH!"</span>);</div><div class="line">defined(<span class="string">'LOG_PATH'</span>) || <span class="keyword">exit</span>(<span class="string">"NO LOG_PATH!"</span>);</div><div class="line">defined(<span class="string">'LOG_NAME'</span>) || <span class="keyword">exit</span>(<span class="string">"NO LOG_NAME!"</span>);</div><div class="line"><span class="class"><span class="keyword">class</span> <span class="title">Application</span></span>{</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $starttime = <span class="keyword">null</span>;</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $controller = <span class="keyword">null</span>;</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $method = <span class="keyword">null</span>;</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $argTypes = <span class="keyword">array</span>(<span class="string">"p"</span>=><span class="string">"post"</span>, <span class="string">"g"</span>=><span class="string">"get"</span>, <span class="string">"c"</span>=><span class="string">"cookie"</span>);</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $directories = <span class="keyword">array</span>();</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $files = <span class="keyword">array</span>();</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $inputs = <span class="keyword">null</span>;</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $server = <span class="keyword">null</span>;</div><div class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">()</span> </span>{}</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">load</span><span class="params">($loadData)</span></span>{</div><div class="line"> <span class="keyword">if</span>(<span class="keyword">isset</span>($loadData[<span class="string">"dir"</span>])){ <span class="keyword">self</span>::$directories = $loadData[<span class="string">"dir"</span>];}</div><div class="line"> <span class="keyword">if</span>(<span class="keyword">isset</span>($loadData[<span class="string">"file"</span>])){ <span class="keyword">self</span>::$files = $loadData[<span class="string">"file"</span>];}</div><div class="line"> spl_autoload_register(<span class="string">"Application::autoLoad"</span>);</div><div class="line"> }</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">autoLoad</span><span class="params">($className)</span></span>{</div><div class="line"> $dsClassName = str_replace(<span class="string">"_"</span>, <span class="string">"/"</span>, $className);</div><div class="line"> <span class="keyword">if</span>(is_array(<span class="keyword">self</span>::$directories)){</div><div class="line"> <span class="keyword">foreach</span>(<span class="keyword">self</span>::$directories <span class="keyword">as</span> $directorie){</div><div class="line"> $filePath = rtrim($directorie, <span class="string">"/"</span>) . <span class="string">"/"</span> . $dsClassName . <span class="string">".php"</span>;</div><div class="line"> <span class="keyword">if</span>(is_file($filePath)){</div><div class="line"> <span class="keyword">require</span> $filePath;</div><div class="line"> <span class="keyword">return</span> <span class="keyword">true</span>;</div><div class="line"> }</div><div class="line"> }</div><div class="line"> }</div><div class="line"> <span class="keyword">if</span>(is_array(<span class="keyword">self</span>::$files)){</div><div class="line"> <span class="keyword">foreach</span>(<span class="keyword">self</span>::$files <span class="keyword">as</span> $key => $file){</div><div class="line"> <span class="keyword">if</span>($key == $className){</div><div class="line"> <span class="keyword">require</span> $file;</div><div class="line"> <span class="keyword">return</span> <span class="keyword">true</span>;</div><div class="line"> }</div><div class="line"> }</div><div class="line"> }</div><div class="line"> <span class="keyword">throw</span> <span class="keyword">new</span> <span class="keyword">Exception</span>(<span class="string">"No found class "</span> . $className, <span class="number">500</span>);</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">writeLog</span><span class="params">($type, $data, $addTime = true)</span></span>{</div><div class="line"> $data = $addTime ? (date(<span class="string">"Y-m-d H:i:s"</span>) . <span class="string">"\t"</span> . $data) : $data;</div><div class="line"> swoole_async_writefile(LOG_PATH . <span class="string">"/"</span> . LOG_NAME . <span class="string">"_{$type}.log"</span>, $data . <span class="string">"\r\n"</span>, <span class="function"><span class="keyword">function</span><span class="params">()</span></span>{}, FILE_APPEND);</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">display</span><span class="params">($result)</span></span>{</div><div class="line"> <span class="comment">//note 请求响应日志</span></div><div class="line"> $consume = (int)round((microtime(<span class="keyword">true</span>) - Application::$starttime) * <span class="number">1000</span>, <span class="number">1</span>);</div><div class="line"> $logInfo = <span class="keyword">self</span>::$inputs;</div><div class="line"> $logInfo[<span class="string">'client_ip'</span>] = <span class="keyword">self</span>::getIP();</div><div class="line"> $logInfo[<span class="string">'logtime'</span>] = date(<span class="string">"Y-m-d H:i:s"</span>, intval(Application::$starttime));</div><div class="line"> $logInfo[<span class="string">'consume'</span>] = $consume;</div><div class="line"> $logInfo[<span class="string">'errno'</span>] = $result[<span class="string">'errno'</span>];</div><div class="line"> $logInfo[<span class="string">'errmsg'</span>] = $result[<span class="string">'errmsg'</span>];</div><div class="line"> <span class="keyword">self</span>::writeLog(<span class="string">'request'</span>, json_encode($logInfo), <span class="keyword">false</span>);</div><div class="line"> <span class="keyword">return</span> json_encode($result);</div><div class="line"> }</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">get</span><span class="params">($name, $hash = <span class="string">'get'</span>, $default = null)</span> </span>{</div><div class="line"> $hash = strtolower ( $hash );</div><div class="line"> <span class="keyword">switch</span> ($hash) {</div><div class="line"> <span class="keyword">case</span> <span class="string">'get'</span> : $input = <span class="keyword">self</span>::$inputs[<span class="string">'get'</span>];<span class="keyword">break</span>;</div><div class="line"> <span class="keyword">case</span> <span class="string">'post'</span> : $input = <span class="keyword">self</span>::$inputs[<span class="string">'post'</span>];<span class="keyword">break</span>;</div><div class="line"> <span class="keyword">case</span> <span class="string">'cookie'</span> : $input = <span class="keyword">self</span>::$inputs[<span class="string">'cookie'</span>];<span class="keyword">break</span>;</div><div class="line"> <span class="keyword">case</span> <span class="string">'files'</span> : $input = <span class="keyword">self</span>::$inputs[<span class="string">'files'</span>];<span class="keyword">break</span>;</div><div class="line"> <span class="keyword">case</span> <span class="string">'server'</span> : $input = <span class="keyword">self</span>::$server;<span class="keyword">break</span>;</div><div class="line"> <span class="keyword">default</span> : $input = <span class="keyword">isset</span>(<span class="keyword">self</span>::$inputs[$hash]) ? <span class="keyword">self</span>::$inputs[$hash] : <span class="keyword">NULL</span>;<span class="keyword">break</span>;</div><div class="line"> }</div><div class="line"> <span class="keyword">return</span> (<span class="keyword">isset</span> ($input[$name]) ? $input[$name] : $default);</div><div class="line"> }</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">set</span><span class="params">($name, $hash = <span class="string">'get'</span>, $value = <span class="string">""</span>)</span></span>{</div><div class="line"> <span class="keyword">self</span>::$inputs[strtolower($hash)][$name] = $value;</div><div class="line"> }</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">getIP</span><span class="params">()</span></span>{</div><div class="line"> $ip = <span class="keyword">false</span>;</div><div class="line"> <span class="keyword">if</span> (getenv(<span class="string">"REMOTE_ADDR"</span>) && strcasecmp(getenv(<span class="string">"REMOTE_ADDR"</span>), <span class="string">"unknown"</span>)){</div><div class="line"> $ip = getenv(<span class="string">"REMOTE_ADDR"</span>);</div><div class="line"> }<span class="keyword">else</span> <span class="keyword">if</span> (<span class="keyword">isset</span>(<span class="keyword">self</span>::$server[<span class="string">'remote_addr'</span>]) && <span class="keyword">self</span>::$server[<span class="string">'remote_addr'</span>] && strcasecmp(<span class="keyword">self</span>::$server[<span class="string">'remote_addr'</span>], <span class="string">"unknown"</span>)){</div><div class="line"> $ip = <span class="keyword">self</span>::$server[<span class="string">'remote_addr'</span>];</div><div class="line"> }</div><div class="line"> <span class="keyword">return</span> $ip;</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">Route</span><span class="params">()</span></span>{</div><div class="line"> $method = <span class="keyword">self</span>::get(<span class="string">'method'</span>);</div><div class="line"> <span class="keyword">if</span>($method){</div><div class="line"> $info = explode(<span class="string">"."</span>, $method);</div><div class="line"> <span class="keyword">if</span>(count($info) == <span class="number">2</span>){</div><div class="line"> $controllerName = ucfirst($info[<span class="number">0</span>]) . <span class="string">'Controller'</span>;</div><div class="line"> $actionName = strtolower($info[<span class="number">1</span>]) . <span class="string">'Action'</span>;</div><div class="line"> <span class="comment">//note 实例化控制器</span></div><div class="line"> <span class="keyword">self</span>::$controller = <span class="keyword">new</span> $controllerName();</div><div class="line"> <span class="keyword">if</span>(method_exists(<span class="keyword">self</span>::$controller, $actionName)){</div><div class="line"> $className = get_class(<span class="keyword">self</span>::$controller);</div><div class="line"> $class = <span class="keyword">new</span> ReflectionClass($className);</div><div class="line"> <span class="keyword">self</span>::$method = $class->getMethod($actionName);</div><div class="line"> }<span class="keyword">else</span>{</div><div class="line"> <span class="keyword">throw</span> <span class="keyword">new</span> <span class="keyword">Exception</span>(<span class="string">"No method exists"</span>, <span class="number">500</span>);</div><div class="line"> }</div><div class="line"> }<span class="keyword">else</span>{</div><div class="line"> <span class="keyword">throw</span> <span class="keyword">new</span> <span class="keyword">Exception</span>(<span class="string">"Error method param"</span>, <span class="number">401</span>);</div><div class="line"> }</div><div class="line"> }<span class="keyword">else</span>{</div><div class="line"> <span class="keyword">throw</span> <span class="keyword">new</span> <span class="keyword">Exception</span>(<span class="string">"No method param"</span>, <span class="number">401</span>);</div><div class="line"> }</div><div class="line"> }</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">prepareParams</span><span class="params">()</span></span>{</div><div class="line"> $args = <span class="keyword">array</span>();</div><div class="line"> $params = <span class="keyword">self</span>::$method->getParameters();</div><div class="line"> <span class="keyword">if</span>($params){</div><div class="line"> <span class="keyword">foreach</span>($params <span class="keyword">as</span> $p){</div><div class="line"> $input = <span class="keyword">false</span>;</div><div class="line"> $pargName = $p->getName();</div><div class="line"> $tmp = explode(<span class="string">"_"</span>, $pargName);</div><div class="line"> <span class="keyword">if</span>(<span class="keyword">isset</span>(<span class="keyword">self</span>::$argTypes[$tmp[<span class="number">0</span>]])){</div><div class="line"> $pargType = <span class="keyword">self</span>::argTypes[$tmp[<span class="number">0</span>]];</div><div class="line"> $pargName = substr($pargName, <span class="number">2</span>);</div><div class="line"> }<span class="keyword">else</span>{</div><div class="line"> $pargType = <span class="string">"get"</span>;</div><div class="line"> }</div><div class="line"> $input = <span class="keyword">isset</span>( <span class="keyword">self</span>::$inputs[$pargType][$pargName] ) ? <span class="keyword">self</span>::$inputs[$pargType][$pargName] : <span class="keyword">false</span>;</div><div class="line"> $default = $p->isDefaultValueAvailable();</div><div class="line"> <span class="keyword">if</span>(<span class="number">0</span> != $input && (<span class="keyword">false</span> === $input || <span class="keyword">empty</span>($input)) && <span class="keyword">false</span> === $default){</div><div class="line"> <span class="keyword">throw</span> <span class="keyword">new</span> <span class="keyword">Exception</span>(<span class="string">"No {$pargName} {$pargType} param"</span>, <span class="number">401</span>);</div><div class="line"> }</div><div class="line"> $args[$pargName] = <span class="keyword">false</span> !== $input ? $input : $p->getDefaultValue();</div><div class="line"> }</div><div class="line"> }</div><div class="line"> <span class="keyword">return</span> $args;</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">Run</span><span class="params">()</span> </span>{</div><div class="line"> <span class="keyword">self</span>::Route();</div><div class="line"> <span class="keyword">return</span> <span class="keyword">self</span>::$method->invokeArgs(<span class="keyword">self</span>::$controller, <span class="keyword">self</span>::prepareParams());</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">onRequest</span><span class="params">($req, $res)</span></span>{</div><div class="line"> $result = <span class="keyword">array</span>(<span class="string">"errno"</span>=><span class="number">0</span>, <span class="string">"errmsg"</span>=><span class="string">""</span>, <span class="string">"data"</span>=><span class="string">""</span>);</div><div class="line"> <span class="keyword">self</span>::$starttime = microtime(<span class="keyword">true</span>);</div><div class="line"> <span class="keyword">self</span>::$server = $req->server;</div><div class="line"> <span class="keyword">self</span>::$inputs = <span class="keyword">array</span>(</div><div class="line"> <span class="string">"get"</span> => $req->get,</div><div class="line"> <span class="string">"post"</span> => $req->post,</div><div class="line"> <span class="string">"cookie"</span> => $req->cookie,</div><div class="line"> <span class="string">"files"</span> => $req->files,</div><div class="line"> <span class="string">"input"</span> => <span class="keyword">empty</span>($req->post) ? $req->rawContent() : <span class="keyword">null</span>,</div><div class="line"> );</div><div class="line"> <span class="keyword">try</span>{</div><div class="line"> <span class="comment">//note 程序运行</span></div><div class="line"> $result[<span class="string">'data'</span>] = <span class="keyword">self</span>::run();</div><div class="line"> }<span class="keyword">catch</span>(<span class="keyword">Exception</span> $e){</div><div class="line"> $errno = $e->getCode();</div><div class="line"> <span class="keyword">empty</span>($errno) && $errno = <span class="number">500</span>;</div><div class="line"> $result[<span class="string">'errno'</span>] = $errno;</div><div class="line"> $result[<span class="string">'errmsg'</span>] = $e->getMessage();</div><div class="line"> }</div><div class="line"> <span class="comment">//note 输出结果</span></div><div class="line"> $res->header(<span class="string">"Content-Type"</span>, <span class="string">"application/json; charset=UTF-8"</span>);</div><div class="line"> $res->header(<span class="string">"Cache-Control"</span>, <span class="string">"no-store"</span>);</div><div class="line"> $res->end(<span class="keyword">self</span>::display($result));</div><div class="line"> }</div><div class="line">}</div></pre></td></tr></table></figure>
<figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div></pre></td><td class="code"><pre><div class="line">RedisDB.php</div><div class="line"><span class="meta"><?php</span></div><div class="line"><span class="class"><span class="keyword">class</span> <span class="title">RedisDB</span></span>{</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $pool = <span class="keyword">null</span>;</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">getInstance</span><span class="params">($conf)</span></span>{</div><div class="line"> <span class="keyword">if</span>($conf){</div><div class="line"> $name = $conf[<span class="string">'name'</span>];</div><div class="line"> <span class="keyword">if</span>(!<span class="keyword">isset</span>(<span class="keyword">self</span>::$pool[$name])){</div><div class="line"> <span class="keyword">try</span>{</div><div class="line"> <span class="keyword">self</span>::$pool[$name] = <span class="keyword">new</span> Redis();</div><div class="line"> $result = <span class="keyword">self</span>::$pool[$name]->pconnect($conf[<span class="string">'host'</span>], $conf[<span class="string">'port'</span>], $conf[<span class="string">'timeout'</span>]);</div><div class="line"> <span class="keyword">if</span>(!$result){</div><div class="line"> <span class="keyword">throw</span> <span class="keyword">new</span> <span class="keyword">Exception</span>(<span class="string">"Redis {$name} connect error"</span>, <span class="number">500</span>);</div><div class="line"> }</div><div class="line"> <span class="keyword">if</span>(<span class="keyword">isset</span>($conf[<span class="string">'pwd'</span>])){</div><div class="line"> <span class="keyword">self</span>::$pool[$name]->auth($conf[<span class="string">"pwd"</span>]);</div><div class="line"> }</div><div class="line"> <span class="keyword">if</span>(<span class="keyword">isset</span>($conf[<span class="string">'prefix'</span>])){</div><div class="line"> <span class="keyword">self</span>::$pool[$name]->setOption(Redis::OPT_PREFIX, $conf[<span class="string">'prefix'</span>]);</div><div class="line"> }</div><div class="line"> }<span class="keyword">catch</span>(<span class="keyword">Exception</span> $e){</div><div class="line"> <span class="keyword">throw</span> <span class="keyword">new</span> <span class="keyword">Exception</span>(ErrorMessage::$errmsg[ErrorMessage::INVALID_REQUEST], ErrorMessage::INVALID_REQUEST);</div><div class="line"> }</div><div class="line"> }</div><div class="line"> <span class="keyword">return</span> <span class="keyword">self</span>::$pool[$name];</div><div class="line"> }<span class="keyword">else</span>{</div><div class="line"> <span class="keyword">throw</span> <span class="keyword">new</span> <span class="keyword">Exception</span>(<span class="string">"No Redis config"</span>, <span class="number">500</span>);</div><div class="line"> }</div><div class="line"> }</div><div class="line">}</div></pre></td></tr></table></figure>
<h5 id="进程"><a href="#进程" class="headerlink" title="进程"></a>进程</h5><figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div></pre></td><td class="code"><pre><div class="line">Tasker.php</div><div class="line"><span class="meta"><?php</span></div><div class="line"></div><div class="line"><span class="class"><span class="keyword">class</span> <span class="title">Tasker</span></span>{</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $serv = <span class="keyword">null</span>;</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $tasker_id = <span class="keyword">null</span>;</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $redisClient = <span class="keyword">null</span>;</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">start</span><span class="params">($serv, $tasker_id)</span></span>{</div><div class="line"> <span class="keyword">self</span>::$serv = $serv;</div><div class="line"> <span class="keyword">self</span>::$tasker_id = $tasker_id;</div><div class="line"> <span class="keyword">self</span>::$redisClient = RedisDB::getInstance(Config::$redis[<span class="string">"cache.read"</span>]);</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">onTask</span><span class="params">($serv, $task_id, $src_worker_id, $data)</span></span>{</div><div class="line"> <span class="keyword">self</span>::$redisClient->incr($data);</div><div class="line"> <span class="keyword">self</span>::$serv->finish(<span class="string">"finish"</span>);</div><div class="line"> }</div><div class="line">}</div></pre></td></tr></table></figure>
<figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div></pre></td><td class="code"><pre><div class="line">Worker.php</div><div class="line"><span class="meta"><?php</span></div><div class="line"></div><div class="line"><span class="class"><span class="keyword">class</span> <span class="title">Worker</span></span>{</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $serv = <span class="keyword">null</span>;</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $worker_id = <span class="keyword">null</span>;</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $redisClient = <span class="keyword">null</span>;</div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> $rand;</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">start</span><span class="params">($serv, $worker_id)</span></span>{</div><div class="line"> <span class="keyword">self</span>::$serv = $serv;</div><div class="line"> <span class="keyword">self</span>::$worker_id = $worker_id;</div><div class="line"> <span class="keyword">self</span>::$redisClient = RedisDB::getInstance(Config::$redis[<span class="string">"cache.read"</span>]);</div><div class="line"> <span class="keyword">self</span>::$rand = rand(<span class="number">0</span>, <span class="number">999999</span>);</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">onFinish</span><span class="params">($serv, $task_id, $data)</span></span>{</div><div class="line"></div><div class="line"> }</div><div class="line">}</div></pre></td></tr></table></figure>
<h5 id="控制器"><a href="#控制器" class="headerlink" title="控制器"></a>控制器</h5><figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div></pre></td><td class="code"><pre><div class="line">IndexController.php</div><div class="line"><span class="meta"><?php</span></div><div class="line"></div><div class="line"><span class="class"><span class="keyword">class</span> <span class="title">IndexController</span></span>{</div><div class="line"></div><div class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">indexAction</span><span class="params">($name = <span class="string">"hehe"</span>, $type)</span></span>{</div><div class="line"> <span class="keyword">if</span>($name ==<span class="string">"aaa"</span>){</div><div class="line"> sleep(<span class="number">3</span>);</div><div class="line"> }</div><div class="line"> Worker::$serv->taskwait(<span class="string">"wbtest"</span>, $timeout = <span class="number">0.5</span>);</div><div class="line"> $data = Worker::$redisClient->incr(<span class="string">"wbtest"</span>);</div><div class="line"> <span class="keyword">return</span> Application::get(<span class="string">"name"</span>) . <span class="string">"-"</span> . Worker::$rand . <span class="string">"-"</span> . $data;</div><div class="line"> }</div><div class="line"></div><div class="line">}</div></pre></td></tr></table></figure>
<h4 id="说明"><a href="#说明" class="headerlink" title="说明"></a>说明</h4><p>以上代码只是一个demo，做了一下简单的路由，可以自己根据实际情况使用，task worker根据自己的需要确定是否使用。</p>
]]></content>
<summary type="html">
<h4 id="介绍"><a href="#介绍" class="headerlink" title="介绍"></a>介绍</h4><p>swool官网网站：<a href="http://www.swoole.com/" target="_blank" rel="extern
</summary>
<category term="php" scheme="http://www.lvphp.com/tags/php/"/>
<category term="swool" scheme="http://www.lvphp.com/tags/swool/"/>
</entry>
<entry>
<title>zimg imageserver</title>
<link href="http://www.lvphp.com/2016/12/09/zimg-imgserver/"/>
<id>http://www.lvphp.com/2016/12/09/zimg-imgserver/</id>
<published>2016-12-09T09:15:21.000Z</published>
<updated>2016-12-09T09:36:58.779Z</updated>
<content type="html"><![CDATA[<h4 id="介绍"><a href="#介绍" class="headerlink" title="介绍"></a>介绍</h4><p>zimg是<a href="http://blog.buaa.us/" target="_blank" rel="external">@招牌疯子</a>开源的一个图片存储程序，主要的优点是可以根据请求实时处理图片，并且进行压缩和存储，一是方便前端用户，二来降低流量。</p>
<h4 id="安装"><a href="#安装" class="headerlink" title="安装"></a>安装</h4><h5 id="安装依赖"><a href="#安装依赖" class="headerlink" title="安装依赖"></a>安装依赖</h5><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$ sudo yum install openssl-devel cmake libevent-devel libjpeg-devel giflib-devel libpng-devel libwebp-devel ImageMagick-devel libmemcached-devel</div></pre></td></tr></table></figure>
<h4 id="安装zimg"><a href="#安装zimg" class="headerlink" title="安装zimg"></a>安装zimg</h4><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div></pre></td><td class="code"><pre><div class="line">$ git <span class="built_in">clone</span> https://github.com/buaazp/zimg -b master --depth=1</div><div class="line">$ <span class="built_in">cd</span> zimg</div><div class="line">$ make</div><div class="line">$ <span class="built_in">cd</span> bin</div><div class="line">$ ./zimg conf/zimg.lua</div></pre></td></tr></table></figure>
<h4 id="zimg配置文件"><a href="#zimg配置文件" class="headerlink" title="zimg配置文件"></a>zimg配置文件</h4><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div></pre></td><td class="code"><pre><div class="line">--zimg server config</div><div class="line"></div><div class="line">--server config</div><div class="line">--是否后台运行</div><div class="line">is_daemon = 1</div><div class="line">--绑定IP</div><div class="line">ip = <span class="string">'0.0.0.0'</span></div><div class="line">--端口</div><div class="line">port = 4869</div><div class="line">--运行线程数，默认值为服务器CPU数</div><div class="line">--thread_num = 4</div><div class="line">backlog_num = 1024</div><div class="line">max_keepalives = 1</div><div class="line">retry = 3</div><div class="line">system = io.popen(<span class="string">'uname -sn'</span>):<span class="built_in">read</span>(<span class="string">'*l'</span>)</div><div class="line"><span class="built_in">pwd</span> = io.popen(<span class="string">'pwd'</span>):<span class="built_in">read</span>(<span class="string">'*l'</span>)</div><div class="line"></div><div class="line">--header config</div><div class="line">--返回时所带的HTTP header</div><div class="line">headers = <span class="string">'Cache-Control:max-age=7776000'</span></div><div class="line">--是否启用etag缓存</div><div class="line">etag = 1</div></pre></td></tr></table></figure>
<p>默认使用4869端口，打开地址<code>http://{ip}:4869/</code>就可以上传图片了</p>
<h4 id="图片自定义处理"><a href="#图片自定义处理" class="headerlink" title="图片自定义处理"></a>图片自定义处理</h4><p><code>http://demo.buaa.us/5f189d8ec57f5a5a0d3dcba47fa797e2?w=500&h=500&g=0&x=0&y=0&r=45&q=75&f=jpeg</code><br><strong>说明</strong></p>
<ul>
<li>w:图片宽度</li>
<li>h:图片高度</li>
<li>g:g=1为转黑白色</li>
<li>x:裁剪的开始位置X坐标</li>
<li>y:裁剪的开始位置Y坐标</li>
<li>r:旋转角度</li>
<li>q:图片质量</li>
<li>f:输出格式</li>
</ul>
]]></content>
<summary type="html">
<h4 id="介绍"><a href="#介绍" class="headerlink" title="介绍"></a>介绍</h4><p>zimg是<a href="http://blog.buaa.us/" target="_blank" rel="external">@招牌
</summary>
<category term="zimg" scheme="http://www.lvphp.com/tags/zimg/"/>
<category term="图片存储" scheme="http://www.lvphp.com/tags/%E5%9B%BE%E7%89%87%E5%AD%98%E5%82%A8/"/>
</entry>
<entry>
<title>使用php扩展trie_filter，利用词库，过滤敏感词</title>
<link href="http://www.lvphp.com/2016/12/09/php-trie-filter/"/>
<id>http://www.lvphp.com/2016/12/09/php-trie-filter/</id>
<published>2016-12-09T07:14:39.000Z</published>
<updated>2016-12-09T07:40:18.020Z</updated>
<content type="html"><![CDATA[<h4 id="介绍"><a href="#介绍" class="headerlink" title="介绍"></a>介绍</h4><p>trie_filter是一个php关键词过滤扩展，用于检查一段文本中是否出现敏感词，基于Double-Array Trie 树实现。</p>
<h4 id="安装步骤"><a href="#安装步骤" class="headerlink" title="安装步骤"></a>安装步骤</h4><h5 id="安装libiconv，这个是libdatrie的依赖项"><a href="#安装libiconv，这个是libdatrie的依赖项" class="headerlink" title="安装libiconv，这个是libdatrie的依赖项"></a>安装libiconv，这个是libdatrie的依赖项</h5><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div></pre></td><td class="code"><pre><div class="line">$ wget http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.14.tar.gz</div><div class="line">$ tar zxvf libiconv-1.14.tar.gz</div><div class="line">$ <span class="built_in">cd</span> libiconv-1.14</div><div class="line">$ ./configure</div><div class="line">$ make</div><div class="line">$ make install</div></pre></td></tr></table></figure>
<h5 id="安装libdatrie依赖库"><a href="#安装libdatrie依赖库" class="headerlink" title="安装libdatrie依赖库"></a>安装libdatrie依赖库</h5><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line">$ tar zxvf libdatrie-0.2.4.tar.gz</div><div class="line">$ <span class="built_in">cd</span> libdatrie-0.2.4</div><div class="line">$ make clean $ ./configure --prefix=<span class="variable">$LIB_PATH</span></div><div class="line">$ make $ make install</div></pre></td></tr></table></figure>
<h5 id="安装trie-filter扩展"><a href="#安装trie-filter扩展" class="headerlink" title="安装trie_filter扩展"></a>安装trie_filter扩展</h5><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line">$ <span class="variable">$INSTALL_PHP_PATH</span>/bin/phpize</div><div class="line">$ ./configure --with-php-config=<span class="variable">$INSTALL_PHP_PATH</span>/bin/php-config --with-trie_filter=<span class="variable">$LIB_PATH</span></div><div class="line">$ make</div><div class="line">$ make install</div></pre></td></tr></table></figure>
<p>然后修改php.ini，增加一行：extension=trie_filter.so，然后重启PHP。</p>
<h5 id="生成用语检测的词典"><a href="#生成用语检测的词典" class="headerlink" title="生成用语检测的词典"></a>生成用语检测的词典</h5><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line">$ tar zxf trie_filter-2011.03.21.tar.gz</div><div class="line">$ <span class="built_in">cd</span> trie_filter-2011.03.21</div><div class="line">$ gcc -o dpp dpp.c -ldatrie // 生成dpp命令用语编译词典</div><div class="line">$ ./dpp words.txt words.dic //将words.txt 编译成trie_filter使用的词典 words.txt中每个词占一行</div></pre></td></tr></table></figure>
<h4 id="PHP测试实例"><a href="#PHP测试实例" class="headerlink" title="PHP测试实例"></a>PHP测试实例</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div></pre></td><td class="code"><pre><div class="line"><span class="meta"><?php</span></div><div class="line">ini_set(<span class="string">'memory_limit'</span>, <span class="string">'512M'</span>);</div><div class="line"><span class="comment">// 载入词典，成功返回一个 Trie_Filter 资源句柄，失败返回 NULL </span></div><div class="line">$resTrie = trie_filter_load(<span class="string">'./words.dic'</span>);</div><div class="line">$str1 = <span class="string">'今天利用trie_filter做敏感词过滤示例'</span>; </div><div class="line">$str2 = <span class="string">'今天利用trie_filter做过滤示例'</span>; </div><div class="line"><span class="comment">// 检测文本中是否含有词典中定义的敏感词(假设敏感词设定为：‘敏感词’) </span></div><div class="line">$res1 = trie_filter_search_all($resTrie, $str1); <span class="comment">// 一次把所有的敏感词都检测出来</span></div><div class="line">$res2 = trie_filter_search($resTrie, $str2);<span class="comment">// 每次只检测一个敏感词</span></div><div class="line">var_dump($res1); </div><div class="line"><span class="keyword">echo</span> <span class="string">"<br/-->"</span>; </div><div class="line">var_dump($res2);</div><div class="line">trie_filter_free($resTrie); <span class="comment">//最后别忘记调用free</span></div></pre></td></tr></table></figure>
<p><strong>注意</strong></p>
<ul>
<li>一般情况下字典文件会比较大，如果每次都加载字典文件，性能会大打折扣，我们可以结合swool来做敏感词判断服务，避免每次加载字典；</li>
</ul>
]]></content>
<summary type="html">
<h4 id="介绍"><a href="#介绍" class="headerlink" title="介绍"></a>介绍</h4><p>trie_filter是一个php关键词过滤扩展，用于检查一段文本中是否出现敏感词，基于Double-Array Trie 树实现。</p>
</summary>
<category term="php" scheme="http://www.lvphp.com/tags/php/"/>
<category term="扩展" scheme="http://www.lvphp.com/tags/%E6%89%A9%E5%B1%95/"/>
<category term="trie_filter" scheme="http://www.lvphp.com/tags/trie-filter/"/>
<category term="敏感词" scheme="http://www.lvphp.com/tags/%E6%95%8F%E6%84%9F%E8%AF%8D/"/>
</entry>
<entry>
<title>JS中generater和yield的使用</title>
<link href="http://www.lvphp.com/2016/12/06/generater-yield/"/>
<id>http://www.lvphp.com/2016/12/06/generater-yield/</id>
<published>2016-12-06T07:00:23.000Z</published>
<updated>2016-12-07T06:10:22.118Z</updated>
<content type="html"><![CDATA[<h4 id="说明"><a href="#说明" class="headerlink" title="说明"></a>说明</h4><p>function* 声明（function关键字后跟一个星号）定义一个generator（生成器）函数，返回一个Generator对象。</p>
<h4 id="语法"><a href="#语法" class="headerlink" title="语法"></a>语法</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">function</span>* <span class="title">name</span>(<span class="params">[param[, param[, ... param]]]</span>) </span>{ statements }</div></pre></td></tr></table></figure>
<p><strong>name</strong><br>函数名</p>
<p><strong>param</strong><br>传入函数的参数名，一个函数至多可有255个参数。</p>
<p><strong>statements</strong><br>函数的主体</p>
<h4 id="描述"><a href="#描述" class="headerlink" title="描述"></a>描述</h4><p>生成器是一种可以从中退出并在之后重新进入的函数。生成器的环境（绑定的变量）会在每次执行后被保存，下次进入时可继续使用。<br>调用一个生成器函数并不马上执行它的主体，而是返回一个这个生成器函数的迭代器（iterator）对象。当这个迭代器的next()方法被调用时，生成器函数的主体会被执行直至第一个yield表达式，该表达式定义了迭代器返回的值，或者，被 yield*委派至另一个生成器函数。next()方法返回一个对象，该对象有一个value属性，表示产出的值，和一个done属性，表示生成器是否已经产出了它最后的值。</p>
<h4 id="示例"><a href="#示例" class="headerlink" title="示例"></a>示例</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span></div><div class="line"><span class="function"><span class="keyword">function</span>* <span class="title">idMaker</span>(<span class="params"></span>)</span>{</div><div class="line"> <span class="keyword">var</span> index = <span class="number">0</span>;</div><div class="line"> <span class="keyword">while</span>(index<<span class="number">3</span>)</div><div class="line"> <span class="keyword">yield</span> index++;</div><div class="line">}</div><div class="line"><span class="keyword">var</span> gen = idMaker();</div><div class="line"><span class="built_in">console</span>.log(gen.next().value); <span class="comment">// 0</span></div><div class="line"><span class="built_in">console</span>.log(gen.next().value); <span class="comment">// 1</span></div><div class="line"><span class="built_in">console</span>.log(gen.next().value); <span class="comment">// 2</span></div><div class="line"><span class="built_in">console</span>.log(gen.next().value); <span class="comment">// undefined</span></div></pre></td></tr></table></figure>
<h4 id="co的使用"><a href="#co的使用" class="headerlink" title="co的使用"></a>co的使用</h4><p>在开发中，为了方便的使用generator，我们可以使用TJ大神的co库，co其实是帮我们封装了不断调用next的过程<br><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span></div><div class="line"><span class="keyword">const</span> co = <span class="built_in">require</span>(<span class="string">"co"</span>);</div><div class="line"></div><div class="line"><span class="function"><span class="keyword">function</span> <span class="title">sleep</span>(<span class="params">ms</span>)</span>{</div><div class="line"> <span class="keyword">return</span> <span class="function"><span class="keyword">function</span>(<span class="params">done</span>)</span>{</div><div class="line"> setTimeout(done, ms)</div><div class="line"> }</div><div class="line">}</div><div class="line"></div><div class="line">co(<span class="function"><span class="keyword">function</span>* (<span class="params"></span>)</span>{</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">"sleep"</span>);</div><div class="line"> <span class="keyword">yield</span> sleep(<span class="number">1000</span>)</div><div class="line"> <span class="built_in">console</span>.log(<span class="string">"sleep"</span>);</div><div class="line">}).catch(<span class="function"><span class="keyword">function</span>(<span class="params">e</span>)</span>{</div><div class="line"></div><div class="line">})</div></pre></td></tr></table></figure></p>
<h4 id="thunkify的使用"><a href="#thunkify的使用" class="headerlink" title="thunkify的使用"></a>thunkify的使用</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span></div><div class="line"><span class="keyword">const</span> fs = <span class="built_in">require</span>(<span class="string">"fs"</span>),</div><div class="line"> co = <span class="built_in">require</span>(<span class="string">"co"</span>),</div><div class="line"> thunkify = <span class="built_in">require</span>(<span class="string">"thunkify"</span>),</div><div class="line"> readfile = thunkify(fs.readFile);</div><div class="line"></div><div class="line">co(<span class="function"><span class="keyword">function</span>* (<span class="params"></span>)</span>{</div><div class="line"> <span class="keyword">let</span> content = <span class="keyword">yield</span> <span class="function"><span class="keyword">function</span>(<span class="params">done</span>)</span>{</div><div class="line"> fs.readFile(<span class="string">"/tmp/test.txt"</span>, done)</div><div class="line"> }</div><div class="line"> <span class="keyword">let</span> text = <span class="keyword">yield</span> readfile(<span class="string">"/tmp/test.txt"</span>);</div><div class="line"> <span class="built_in">console</span>.log(content, text);</div><div class="line">}).catch(<span class="function"><span class="keyword">function</span>(<span class="params">e</span>)</span>{</div><div class="line"></div><div class="line">});</div></pre></td></tr></table></figure>
]]></content>
<summary type="html">
<h4 id="说明"><a href="#说明" class="headerlink" title="说明"></a>说明</h4><p>function* 声明（function关键字后跟一个星号）定义一个generator（生成器）函数，返回一个Generator对象。</
</summary>
<category term="js" scheme="http://www.lvphp.com/tags/js/"/>
<category term="ES6" scheme="http://www.lvphp.com/tags/ES6/"/>
<category term="generater" scheme="http://www.lvphp.com/tags/generater/"/>
<category term="yield" scheme="http://www.lvphp.com/tags/yield/"/>
<category term="co" scheme="http://www.lvphp.com/tags/co/"/>
<category term="thunkify" scheme="http://www.lvphp.com/tags/thunkify/"/>
</entry>
<entry>
<title>php file_get_contents</title>
<link href="http://www.lvphp.com/2016/12/03/file-get-contents/"/>
<id>http://www.lvphp.com/2016/12/03/file-get-contents/</id>
<published>2016-12-03T04:03:04.000Z</published>
<updated>2016-12-03T04:05:28.217Z</updated>
<content type="html"><![CDATA[<h4 id="使用file-get-contents发送post请求"><a href="#使用file-get-contents发送post请求" class="headerlink" title="使用file_get_contents发送post请求"></a>使用file_get_contents发送post请求</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div></pre></td><td class="code"><pre><div class="line">$data = [<span class="string">'eat'</span>=><span class="string">'2kg'</span>,<span class="string">'run'</span>=><span class="string">'10km'</span>];</div><div class="line">$url = <span class="string">'http://localhost'</span>;</div><div class="line">$context = stream_context_create(<span class="keyword">array</span>(</div><div class="line"> <span class="string">'http'</span> => <span class="keyword">array</span>( </div><div class="line"> <span class="string">'method'</span> => <span class="string">'POST'</span>, </div><div class="line"> <span class="string">'header'</span> => <span class="string">'Content-type:application/x-www-form-urlencoded'</span>, </div><div class="line"> <span class="string">'content'</span> => html_build_query($info), </div><div class="line"> <span class="string">'timeout'</span> => <span class="number">3</span></div><div class="line"> )</div><div class="line">));</div><div class="line">$result = file_get_contents($url, <span class="keyword">false</span>, $context);</div></pre></td></tr></table></figure>
]]></content>
<summary type="html">
<h4 id="使用file-get-contents发送post请求"><a href="#使用file-get-contents发送post请求" class="headerlink" title="使用file_get_contents发送post请求"></a>使用fil
</summary>
<category term="php" scheme="http://www.lvphp.com/tags/php/"/>
<category term="file_get_contents" scheme="http://www.lvphp.com/tags/file-get-contents/"/>
</entry>
<entry>
<title>微信JS SDK</title>
<link href="http://www.lvphp.com/2016/12/03/weixin-sdk/"/>
<id>http://www.lvphp.com/2016/12/03/weixin-sdk/</id>
<published>2016-12-03T03:17:56.000Z</published>
<updated>2016-12-03T03:46:48.366Z</updated>
<content type="html"><![CDATA[<h4 id="引入微信JS文件"><a href="#引入微信JS文件" class="headerlink" title="引入微信JS文件"></a>引入微信JS文件</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line"><script type=<span class="string">"text/javascript"</span> src=<span class="string">"https://res.wx.qq.com/open/js/jweixin-1.1.0.js"</span>></script></div></pre></td></tr></table></figure>
<h4 id="获取access-token"><a href="#获取access-token" class="headerlink" title="获取access_token"></a>获取access_token</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$access_info = file_get_contents(<span class="string">"https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET"</span>);</div></pre></td></tr></table></figure>
<p>正常情况下，微信会返回下述JSON数据包给公众号：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">{"access_token":"ACCESS_TOKEN","expires_in":7200}</div></pre></td></tr></table></figure></p>
<p>错误时微信会返回错误码等信息，JSON数据包示例如下（该示例为AppID无效错误）:<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">{"errcode":40013,"errmsg":"invalid appid"}</div></pre></td></tr></table></figure></p>
<p><strong>注意</strong><br>获取access_token有频次限制，获取的access_token需要在做缓存 </p>
<h4 id="获取jsapi-ticket"><a href="#获取jsapi-ticket" class="headerlink" title="获取jsapi_ticket"></a>获取jsapi_ticket</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$ticket_info = file_get_contents(<span class="string">"https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=jsapi"</span>);</div></pre></td></tr></table></figure>
<p>成功返回如下JSON：<br><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div></pre></td><td class="code"><pre><div class="line">{</div><div class="line"><span class="string">"errcode"</span>:<span class="number">0</span>,</div><div class="line"><span class="string">"errmsg"</span>:<span class="string">"ok"</span>,</div><div class="line"><span class="string">"ticket"</span>:<span class="string">"bxLdikRXVbTPdHSM05e5u5sUoXNKd8-41ZO3MhKoyN5OfkWITDGgnr2fwJ0m9E8NYzWKVZvdVtaUgWvsdshFKA"</span>,</div><div class="line"><span class="string">"expires_in"</span>:<span class="number">7200</span></div><div class="line">}</div></pre></td></tr></table></figure></p>
<p><strong>注意</strong><br>获取jsapi_ticket有频次限制，获取的jsapi_ticket需要在做缓存</p>
<h4 id="计算签名"><a href="#计算签名" class="headerlink" title="计算签名"></a>计算签名</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$signature = sha1(<span class="string">"jsapi_ticket=sM4AOVdWfPE4DxkXGEs8VMCPGGVi4C3VM0P37wVUCFvkVAy_90u5h9nbSlYy3-Sl-HhTdfl2fzFy1AOcHKP7qg&noncestr=Wm3WZYTPz0wzccnW&timestamp=1414587457&url=http://mp.weixin.qq.com?params=value"</span>)</div></pre></td></tr></table></figure>
<ul>
<li>jsapi_ticket: 获取的jsapi_ticket</li>
<li>noncestr: 随机串</li>
<li>timestamp: 时间戳</li>
<li>url: 当前网页的URL，不包含#及其后面部分</li>
</ul>
<h4 id="调用SDK"><a href="#调用SDK" class="headerlink" title="调用SDK"></a>调用SDK</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div></pre></td><td class="code"><pre><div class="line">wx.config({</div><div class="line"> <span class="attr">debug</span>: <span class="literal">true</span>, <span class="comment">// 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。</span></div><div class="line"> appId: <span class="string">'wx1a1bba241ca4cce5'</span>, <span class="comment">// 必填，公众号的唯一标识</span></div><div class="line"> timestamp: <span class="number">1428980719</span>, <span class="comment">// 必填，生成签名的时间戳</span></div><div class="line"> nonceStr: <span class="string">'Wm3WZYTPz0wzccnW'</span>, <span class="comment">// 必填，生成签名的随机串</span></div><div class="line"> signature: <span class="string">'2c3b0863b61fe7cc37961d7ce3ce71dc1d7360a8'</span>,<span class="comment">// 必填，签名，见附录1</span></div><div class="line"> jsApiList: [<span class="string">"previewImage"</span>] <span class="comment">// 必填，需要使用的JS接口列表，所有JS接口列表见附录2</span></div><div class="line">});</div><div class="line">wx.ready(<span class="function"><span class="keyword">function</span>(<span class="params"></span>)</span>{</div><div class="line"> $(<span class="string">".img"</span>).click(<span class="function"><span class="keyword">function</span>(<span class="params"></span>)</span>{</div><div class="line"> wx.previewImage({</div><div class="line"> <span class="attr">current</span>: <span class="string">'http://apps.sinaapp.com/app/screen.jpeg'</span>, <span class="comment">// 当前显示的图片链接</span></div><div class="line"> urls: [<span class="string">'http://apps.sinaapp.com/app/link.png'</span>, <span class="string">'http://apps.sinaapp.com/app/search.png'</span>, <span class="string">'http://apps.sinaapp.com/app/searchn.png'</span>] <span class="comment">// 需要预览的图片链接列表</span></div><div class="line"> });</div><div class="line"> });</div><div class="line">});</div></pre></td></tr></table></figure>
]]></content>
<summary type="html">
<h4 id="引入微信JS文件"><a href="#引入微信JS文件" class="headerlink" title="引入微信JS文件"></a>引入微信JS文件</h4><figure class="highlight js"><table><tr><td class
</summary>
<category term="js" scheme="http://www.lvphp.com/tags/js/"/>
<category term="微信" scheme="http://www.lvphp.com/tags/%E5%BE%AE%E4%BF%A1/"/>
<category term="weixin" scheme="http://www.lvphp.com/tags/weixin/"/>
<category term="sdk" scheme="http://www.lvphp.com/tags/sdk/"/>
</entry>
<entry>
<title>ES6-info</title>
<link href="http://www.lvphp.com/2016/12/02/es6-info/"/>
<id>http://www.lvphp.com/2016/12/02/es6-info/</id>
<published>2016-12-02T10:15:38.000Z</published>
<updated>2016-12-02T14:54:39.681Z</updated>
<content type="html"><![CDATA[<h4 id="使用拓展运算符-…-复制数组"><a href="#使用拓展运算符-…-复制数组" class="headerlink" title="使用拓展运算符 … 复制数组"></a>使用拓展运算符 … 复制数组</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span></div><div class="line"><span class="keyword">const</span> items = [<span class="number">1</span>,<span class="number">2</span>,<span class="number">3</span>,<span class="number">4</span>]</div><div class="line"><span class="keyword">const</span> itemscopy = [...items]</div><div class="line"><span class="built_in">console</span>.log(itemscopy); <span class="comment">//note out: [ 1, 2, 3, 4 ]</span></div><div class="line">itemscopy[<span class="number">0</span>] = <span class="number">6</span>;</div><div class="line"><span class="built_in">console</span>.log(items, itemscopy); <span class="comment">//note out: [ 1, 2, 3, 4 ] [ 6, 2, 3, 4 ]</span></div></pre></td></tr></table></figure>
<h4 id="使用解构存取和使用多属性对象"><a href="#使用解构存取和使用多属性对象" class="headerlink" title="使用解构存取和使用多属性对象"></a>使用解构存取和使用多属性对象</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span></div><div class="line"><span class="function"><span class="keyword">function</span> <span class="title">getFullName</span>(<span class="params">obj</span>) </span>{</div><div class="line"> <span class="keyword">const</span> { firstName, lastName } = obj;</div><div class="line"> <span class="keyword">return</span> <span class="string">`<span class="subst">${firstName}</span> <span class="subst">${lastName}</span>`</span>;</div><div class="line">}</div><div class="line"></div><div class="line"><span class="keyword">let</span> str = getFullName({<span class="attr">firstName</span>:<span class="string">"wangbo"</span>, <span class="attr">lastName</span>:<span class="string">"bo"</span>, <span class="attr">age</span>:<span class="number">30</span>});</div><div class="line"><span class="built_in">console</span>.log(str); <span class="comment">//note out: wangbo bo</span></div></pre></td></tr></table></figure>
<h4 id="对数组使用解构赋值"><a href="#对数组使用解构赋值" class="headerlink" title="对数组使用解构赋值"></a>对数组使用解构赋值</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span></div><div class="line"><span class="keyword">const</span> arr = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>];</div><div class="line"><span class="keyword">const</span> [first, second] = arr;</div><div class="line"><span class="built_in">console</span>.log(first, second); <span class="comment">//note out: 1 2</span></div></pre></td></tr></table></figure>
<h4 id="需要回传多个值时，使用对象解构，而不是数组解构"><a href="#需要回传多个值时，使用对象解构，而不是数组解构" class="headerlink" title="需要回传多个值时，使用对象解构，而不是数组解构"></a>需要回传多个值时，使用对象解构，而不是数组解构</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span></div><div class="line"><span class="function"><span class="keyword">function</span> <span class="title">processInput</span>(<span class="params"></span>) </span>{</div><div class="line"> <span class="keyword">return</span> {<span class="attr">left</span>: <span class="number">10</span>, <span class="attr">right</span>: <span class="number">20</span>, <span class="attr">top</span>: <span class="number">30</span>, <span class="attr">bottom</span>: <span class="number">40</span>};</div><div class="line">}</div><div class="line"><span class="keyword">const</span> { top, left } = processInput();</div><div class="line"><span class="built_in">console</span>.log(top, left); <span class="comment">//note out: 30 10</span></div></pre></td></tr></table></figure>
<h4 id="程序化生成字符串时，使用模板字符串代替字符串连接"><a href="#程序化生成字符串时，使用模板字符串代替字符串连接" class="headerlink" title="程序化生成字符串时，使用模板字符串代替字符串连接"></a>程序化生成字符串时，使用模板字符串代替字符串连接</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span></div><div class="line"><span class="function"><span class="keyword">function</span> <span class="title">sayHi</span>(<span class="params">name</span>) </span>{</div><div class="line"> <span class="keyword">return</span> <span class="string">`How are you, <span class="subst">${name}</span>?`</span>;</div><div class="line">}</div><div class="line"><span class="keyword">const</span> str = sayHi(<span class="string">"wangbo"</span>);</div><div class="line"><span class="built_in">console</span>.log(str); <span class="comment">//note out: How are you, wangbo?</span></div></pre></td></tr></table></figure>
<h4 id="函数的参数指定默认值"><a href="#函数的参数指定默认值" class="headerlink" title="函数的参数指定默认值"></a>函数的参数指定默认值</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span></div><div class="line"><span class="function"><span class="keyword">function</span> <span class="title">handleThings</span>(<span class="params">opts = {}</span>) </span>{</div><div class="line"></div><div class="line">}</div></pre></td></tr></table></figure>
<h4 id="使用箭头函数符号"><a href="#使用箭头函数符号" class="headerlink" title="使用箭头函数符号"></a>使用箭头函数符号</h4><figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div></pre></td><td class="code"><pre><div class="line"><span class="meta">"use strict"</span></div><div class="line"><span class="keyword">const</span> items = [<span class="number">1</span>,<span class="number">2</span>,<span class="number">3</span>,<span class="number">4</span>];</div><div class="line"><span class="keyword">let</span> tmp = items.map(<span class="function">(<span class="params">x</span>)=></span>{<span class="keyword">return</span> x*x;});</div><div class="line"><span class="built_in">console</span>.log(tmp); <span class="comment">//note out: [ 1, 4, 9, 16 ]</span></div><div class="line"><span class="keyword">let</span> arr = items.map(<span class="function"><span class="params">x</span> =></span> x * x);</div><div class="line"><span class="built_in">console</span>.log(arr); <span class="comment">//note out: [ 1, 4, 9, 16 ]</span></div></pre></td></tr></table></figure>
]]></content>
<summary type="html">
<h4 id="使用拓展运算符-…-复制数组"><a href="#使用拓展运算符-…-复制数组" class="headerlink" title="使用拓展运算符 … 复制数组"></a>使用拓展运算符 … 复制数组</h4><figure class="highlight
</summary>
<category term="js" scheme="http://www.lvphp.com/tags/js/"/>
<category term="es6" scheme="http://www.lvphp.com/tags/es6/"/>
</entry>
<entry>
<title>git-stash</title>
<link href="http://www.lvphp.com/2016/12/02/git-stash/"/>
<id>http://www.lvphp.com/2016/12/02/git-stash/</id>
<published>2016-12-02T10:02:38.000Z</published>
<updated>2016-12-02T10:08:48.372Z</updated>
<content type="html"><![CDATA[<h4 id="应用场合"><a href="#应用场合" class="headerlink" title="应用场合"></a>应用场合</h4><p>branch_A分支的工作区内容已被修改，但是并未完成。这时需要立即切换到另外一个分支branch_B上去，可是又不想提交目前的修改，因为修改没有完成。但是，不提交的话，又没有办法checkout到前面的分支。<br>此时用Git Stash就相当于备份工作区了。然后再Checkout到branch_B去修改，就能够达到保存当前工作区被修改过的内容，并及时恢复的作用。</p>
<h4 id="用法"><a href="#用法" class="headerlink" title="用法"></a>用法</h4><ul>
<li>git stash 备份当前的工作区的内容，从最近的一次提交中读取相关内容，让工作区保证和上次提交的内容一致。同时，将当前的工作区内容保存到Git栈中;</li>
<li>git stash apply 把栈里面记录的内容运用到当前的版本上，这时候栈里面的记录还保存着;</li>
<li>git stash pop 从Git栈中读取最近一次保存的内容，恢复工作区的相关内容。由于可能存在多个Stash的内容，所以用栈来管理，pop会从最近的一个stash中读取内容并恢复， pop后栈中不再存在该记录;</li>
<li>git stash list 显示Git栈内的所有备份，可以利用这个列表来决定从那个地方恢复;</li>
<li>git stash clear 清空Git栈,此时使用gitg等图形化工具会发现，原来stash的哪些节点都消失了;</li>
</ul>
<h4 id="注意"><a href="#注意" class="headerlink" title="注意"></a>注意</h4><p>在不同分支执行git stash 命令会将修改保存在同一个栈中，<br><strong>例如</strong></p>
<ol>
<li>在copy_master分支执行 git stash, 这时候stash 栈中有一个stash@{0} </li>
<li>在sonar分支执行 git stash, 这时候stash 栈中会再放进一个stash@{1} </li>
<li>执行git stash list命令，输出：<br>stash@{0}: WIP on copy_master: 2923b6d Merge branch ‘master’ into copy_master<br>stash@{1}: WIP on sonar: c2c677b Merge branch ‘master’ into sonar </li>
</ol>
]]></content>
<summary type="html">
<h4 id="应用场合"><a href="#应用场合" class="headerlink" title="应用场合"></a>应用场合</h4><p>branch_A分支的工作区内容已被修改，但是并未完成。这时需要立即切换到另外一个分支branch_B上去，可是又不想提交目
</summary>
<category term="git" scheme="http://www.lvphp.com/tags/git/"/>
<category term="git-stash" scheme="http://www.lvphp.com/tags/git-stash/"/>
</entry>
<entry>
<title>初试Hexo</title>
<link href="http://www.lvphp.com/2016/11/24/hello-world/"/>
<id>http://www.lvphp.com/2016/11/24/hello-world/</id>
<published>2016-11-24T08:48:21.879Z</published>
<updated>2016-12-02T09:58:50.683Z</updated>
<content type="html"><![CDATA[<p>Hexo官网网站：<a href="https://hexo.io/" target="_blank" rel="external">Hexo</a>，文档：<a href="https://hexo.io/docs/" target="_blank" rel="external">documentation</a></p>
<h2 id="使用命令"><a href="#使用命令" class="headerlink" title="使用命令"></a>使用命令</h2><h3 id="创建新文章"><a href="#创建新文章" class="headerlink" title="创建新文章"></a>创建新文章</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$ hexo new name</div></pre></td></tr></table></figure>
<h3 id="本地预览"><a href="#本地预览" class="headerlink" title="本地预览"></a>本地预览</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$ hexo server</div></pre></td></tr></table></figure>
<h3 id="生成静态文件"><a href="#生成静态文件" class="headerlink" title="生成静态文件"></a>生成静态文件</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$ hexo generate</div></pre></td></tr></table></figure>
<h3 id="发布"><a href="#发布" class="headerlink" title="发布"></a>发布</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$ hexo deploy</div></pre></td></tr></table></figure>
]]></content>
<summary type="html">
<p>Hexo官网网站：<a href="https://hexo.io/" target="_blank" rel="external">Hexo</a>，文档：<a href="https://hexo.io/docs/" target="_blank" rel="exter
</summary>
<category term="hexo" scheme="http://www.lvphp.com/tags/hexo/"/>
</entry>
</feed>