*initial commit

.gitignore

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+.idea

coding-style/java/app-proxy/README.md

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+### An example of proxy-server.
+
+The application allows to create a local proxy server for local debugging of web applications.  
+
+### Requirements
+Installation of the Java 6 or higher.
+
+### Build and run
+
+```bash
+mvn -f ./pom.xml -Dproxy.target=https://target.com -Denv.src.path=C:/sources/project -Denv.proxy.port=8090 -Dproxy.pattern=/api* -Dproxy.debug=true clean install
+```
+
+### Features
+
+Ability to specify:  
++ debug mode (-Dproxy.debug)  
++ REST-pattern (-Dproxy.pattern)  
++ local server port (-Denv.proxy.port)  
++ remote server (-Dproxy.target)  
++ local web sources directory (-Denv.src.path)  
+

coding-style/java/app-proxy/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>poterenko.com</groupId>
+	<artifactId>app.proxy</artifactId>
+	<packaging>war</packaging>
+	<version>1.0</version>
+	<name>An example of proxy-server</name>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<src.version>1.7</src.version>
+		<webapp.dir>${env.src.path}</webapp.dir>
+		<proxy.port>${env.proxy.port}</proxy.port>
+		<artifact.name>app-proxy</artifact.name>
+		<javax.servlet.api.version>3.0.1</javax.servlet.api.version>
+		<guice.version>3.0</guice.version>
+		<maven.compiler.plugin.version>3.3</maven.compiler.plugin.version>
+		<maven.jetty.plugin.version>6.1.26</maven.jetty.plugin.version>
+		<commons.io.version>1.3.2</commons.io.version>
+		<google.http.client.version>1.20.0</google.http.client.version>
+		<slf4j.api.version>1.6.2</slf4j.api.version>
+		<slf4j.simple.version>1.7.9</slf4j.simple.version>
+	</properties>
+
+	<dependencyManagement>
+		<dependencies>
+			<!--Servlets-->
+			<dependency>
+				<groupId>javax.servlet</groupId>
+				<artifactId>javax.servlet-api</artifactId>
+				<version>${javax.servlet.api.version}</version>
+			</dependency>
+			<!--Jetty-->
+			<dependency>
+				<groupId>org.mortbay.jetty</groupId>
+				<artifactId>maven-jetty-plugin</artifactId>
+				<version>${maven.jetty.plugin.version}</version>
+				<exclusions>
+					<exclusion>
+						<groupId>org.slf4j</groupId>
+						<artifactId>slf4j-api</artifactId>
+					</exclusion>
+					<exclusion>
+						<groupId>org.slf4j</groupId>
+						<artifactId>slf4j-nop</artifactId>
+					</exclusion>
+					<exclusion>
+						<groupId>org.slf4j</groupId>
+						<artifactId>slf4j-jdk14</artifactId>
+					</exclusion>
+				</exclusions>
+			</dependency>
+			<!--Apache-->
+			<dependency>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>${maven.compiler.plugin.version}</version>
+				<exclusions>
+					<exclusion>
+						<groupId>org.slf4j</groupId>
+						<artifactId>slf4j-api</artifactId>
+					</exclusion>
+					<exclusion>
+						<groupId>org.slf4j</groupId>
+						<artifactId>slf4j-nop</artifactId>
+					</exclusion>
+					<exclusion>
+						<groupId>org.slf4j</groupId>
+						<artifactId>slf4j-jdk14</artifactId>
+					</exclusion>
+				</exclusions>
+			</dependency>
+			<dependency>
+				<groupId>org.apache.commons</groupId>
+				<artifactId>commons-io</artifactId>
+				<version>${commons.io.version}</version>
+			</dependency>
+			<!--Http-->
+			<dependency>
+				<groupId>com.google.http-client</groupId>
+				<artifactId>google-http-client</artifactId>
+				<version>${google.http.client.version}</version>
+			</dependency>
+			<!--Log-->
+			<dependency>
+				<groupId>org.slf4j</groupId>
+				<artifactId>slf4j-api</artifactId>
+				<version>${slf4j.api.version}</version>
+			</dependency>
+			<dependency>
+				<groupId>org.slf4j</groupId>
+				<artifactId>slf4j-simple</artifactId>
+				<version>${slf4j.simple.version}</version>
+			</dependency>
+			<!--IoC-->
+			<dependency>
+				<groupId>com.google.inject</groupId>
+				<artifactId>guice</artifactId>
+				<version>${guice.version}</version>
+			</dependency>
+			<dependency>
+				<groupId>com.google.inject.extensions</groupId>
+				<artifactId>guice-servlet</artifactId>
+				<version>${guice.version}</version>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+
+	<dependencies>
+		<!--Servlets-->
+		<dependency>
+			<groupId>javax.servlet</groupId>
+			<artifactId>javax.servlet-api</artifactId>
+		</dependency>
+		<!--Jetty-->
+		<dependency>
+			<groupId>org.mortbay.jetty</groupId>
+			<artifactId>maven-jetty-plugin</artifactId>
+		</dependency>
+		<!--Apache-->
+		<dependency>
+			<groupId>org.apache.maven.plugins</groupId>
+			<artifactId>maven-compiler-plugin</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.commons</groupId>
+			<artifactId>commons-io</artifactId>
+		</dependency>
+		<!--Http-->
+		<dependency>
+			<groupId>com.google.http-client</groupId>
+			<artifactId>google-http-client</artifactId>
+		</dependency>
+		<!--Log-->
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-api</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-simple</artifactId>
+		</dependency>
+		<!--IoC-->
+		<dependency>
+			<groupId>com.google.inject</groupId>
+			<artifactId>guice</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>com.google.inject.extensions</groupId>
+			<artifactId>guice-servlet</artifactId>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<finalName>${artifact.name}</finalName>
+		<sourceDirectory>src/main/java</sourceDirectory>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>${maven.compiler.plugin.version}</version>
+				<configuration>
+					<source>${src.version}</source>
+					<target>${src.version}</target>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.mortbay.jetty</groupId>
+				<artifactId>maven-jetty-plugin</artifactId>
+				<version>${maven.jetty.plugin.version}</version>
+				<configuration>
+					<webAppConfig>
+						<defaultsDescriptor>${basedir}/src/main/resources/webdefault.xml</defaultsDescriptor>
+						<contextPath>/</contextPath>
+						<baseResource implementation="org.mortbay.resource.ResourceCollection">
+							<resourcesAsCSV>${webapp.dir}</resourcesAsCSV>
+						</baseResource>
+					</webAppConfig>
+					<connectors>
+						<connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">
+							<port>${proxy.port}</port>
+						</connector>
+					</connectors>
+				</configuration>
+				<executions>
+					<execution>
+						<id>install-jetty</id>
+						<phase>install</phase>
+						<goals>
+							<goal>run</goal>
+						</goals>
+						<configuration>
+							<daemon>false</daemon>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
+</project>

coding-style/java/app-proxy/src/main/java/com/poterenko/proxy/ProxyConstants.java

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+package com.poterenko.proxy;
+
+public final class ProxyConstants {
+
+	public static final String PROXY_TARGET = "proxy.target";
+	public static final String PROXY_PATTERN = "proxy.pattern";
+	public static final String PROXY_DEBUG = "proxy.debug";
+	public static final String QUERY_SEPARATOR = "?";
+	public static final String DEBUG_COOKIE_NAME = "debug";
+}

coding-style/java/app-proxy/src/main/java/com/poterenko/proxy/ProxyModule.java

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+package com.poterenko.proxy;
+
+import com.google.api.client.http.HttpRequest;
+import com.google.api.client.http.HttpRequestFactory;
+import com.google.api.client.http.HttpTransport;
+import com.google.api.client.http.javanet.NetHttpTransport;
+import com.google.common.base.Function;
+
+import com.google.inject.Provides;
+import com.google.inject.TypeLiteral;
+import com.google.inject.servlet.ServletModule;
+import com.poterenko.proxy.cookie.CookieChecker;
+import com.poterenko.proxy.cookie.impl.CookieCheckerImpl;
+import com.poterenko.proxy.cookie.impl.ToCookieNameFunction;
+import com.poterenko.proxy.request.ProxyRequestProvider;
+import com.poterenko.proxy.servlets.ProxyApiFilter;
+import com.poterenko.proxy.servlets.ProxyCookieFilter;
+
+import static java.lang.System.getProperty;
+import static org.apache.maven.shared.utils.StringUtils.isEmpty;
+
+import javax.inject.Named;
+import javax.inject.Singleton;
+import javax.servlet.http.Cookie;
+
+public class ProxyModule extends ServletModule {
+
+	@Override
+	protected void configureServlets() {
+		if (!isEmpty(getProperty(ProxyConstants.PROXY_DEBUG))) {
+			filter("*").through(ProxyCookieFilter.class);
+		}
+		filter(getProperty(ProxyConstants.PROXY_PATTERN)).through(ProxyApiFilter.class);
+
+		bind(HttpRequest.class).toProvider(ProxyRequestProvider.class);
+		bind(HttpTransport.class).toInstance(new NetHttpTransport.Builder().build());
+		bind(CookieChecker.class).to(CookieCheckerImpl.class).asEagerSingleton();
+		bind(new TypeLiteral<Function<Cookie, String>>() {}).to(ToCookieNameFunction.class);
+	}
+
+	@Provides
+	@Singleton
+	@Named(ProxyConstants.PROXY_TARGET)
+	protected String getHost() {
+		return getProperty(ProxyConstants.PROXY_TARGET);
+	}
+
+	@Provides
+	@Singleton
+	protected HttpRequestFactory getHttpRequestFactory(HttpTransport transport) {
+		return transport.createRequestFactory();
+	}
+}

coding-style/java/app-proxy/src/main/java/com/poterenko/proxy/cookie/CookieChecker.java

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+package com.poterenko.proxy.cookie;
+
+public interface CookieChecker {
+
+	boolean hasCookie(String name);
+}

coding-style/java/app-proxy/src/main/java/com/poterenko/proxy/cookie/impl/CookieCheckerImpl.java

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+package com.poterenko.proxy.cookie.impl;
+
+import com.google.common.base.Function;
+import com.poterenko.proxy.cookie.CookieChecker;
+
+import javax.annotation.Nullable;
+import javax.inject.Inject;
+import javax.inject.Provider;
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+
+import static com.google.common.collect.Collections2.transform;
+import static java.util.Arrays.asList;
+
+public class CookieCheckerImpl implements CookieChecker {
+
+	@Inject
+	private Provider<HttpServletRequest> servletRequestProvider;
+	@Inject
+	private Function<Cookie, String> toCookieNameFunction;
+
+	@Override
+	public boolean hasCookie(String name) {
+		final HttpServletRequest request = servletRequestProvider.get();
+
+		final @Nullable Cookie[] cookies = request.getCookies();
+		return cookies != null && transform(asList(cookies), toCookieNameFunction).contains(name);
+	}
+}

coding-style/java/app-proxy/src/main/java/com/poterenko/proxy/cookie/impl/ToCookieNameFunction.java

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+package com.poterenko.proxy.cookie.impl;
+
+import com.google.common.base.Function;
+
+import javax.servlet.http.Cookie;
+
+public class ToCookieNameFunction implements Function<Cookie, String> {
+
+	@Override
+	public String apply(Cookie c) {
+		return c.getName();
+	}
+}

coding-style/java/app-proxy/src/main/java/com/poterenko/proxy/guice/InjectorHelper.java

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+package com.poterenko.proxy.guice;
+
+import com.google.inject.Injector;
+
+import javax.servlet.ServletContextEvent;
+
+public class InjectorHelper {
+
+	public static Injector getInjector(ServletContextEvent servletContextEvent) {
+		return (Injector) servletContextEvent
+				.getServletContext()
+				.getAttribute(Injector.class.getName());
+	}
+}