Use slf4j+java.util.logging for logging needs. (#383)

Also bumps SLF4J from 1.7.26 to 1.7.32. Co-authored-by: truthbk <truthbk@gmail.com> Co-authored-by: Srdjan Grubor <sgnn7@sgnn7.org> Co-authored-by: Olivier Vielpeau <olivier.vielpeau@datadoghq.com> Co-authored-by: Olivier Vielpeau <olivielpeau@users.noreply.github.com>
DataDog · Dec 21, 2021 · 5a842de · 5a842de
1 parent 6081b15
commit 5a842de
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Showing 15 changed files with 492 additions and 156 deletions.
diff --git a/.gitignore b/.gitignore
@@ -18,3 +18,4 @@ target/*
 
 # jenv
 .java_version
+.java-version
diff --git a/pom.xml b/pom.xml
@@ -39,9 +39,7 @@
         <apache-commons-lang3.version>3.5</apache-commons-lang3.version>
         <java-dogstatsd-client.version>2.10.5</java-dogstatsd-client.version>
         <jcommander.version>1.35</jcommander.version>
-        <!-- log4j 2.13+ drops support for Java 7, so stick to 2.12 -->
-        <log4j.version>2.12.2</log4j.version>
-        <slf4j.version>1.7.26</slf4j.version>
+        <slf4j.version>1.7.32</slf4j.version>
         <jackson.version>2.12.3</jackson.version>
         <snakeyaml.version>1.26</snakeyaml.version>
         <maven-deploy-plugin.version>2.8.2</maven-deploy-plugin.version>
@@ -167,28 +165,10 @@
             <version>${slf4j.version}</version>
         </dependency>
         <dependency>
-            <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-core</artifactId>
-            <version>${log4j.version}</version>
-            <exclusions>
-                <exclusion>
-                    <groupId>com.sun.jmx</groupId>
-                    <artifactId>jmxri</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>com.sun.jdmk</groupId>
-                    <artifactId>jmxtools</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>javax.jms</groupId>
-                    <artifactId>jms</artifactId>
-                </exclusion>
-            </exclusions>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-slf4j-impl</artifactId>
-            <version>${log4j.version}</version>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-jdk14</artifactId>
+            <!-- use same version as the API -->
+            <version>${slf4j.version}</version>
         </dependency>
         <dependency>
             <groupId>org.yaml</groupId>

diff --git a/src/main/java/org/datadog/jmxfetch/App.java b/src/main/java/org/datadog/jmxfetch/App.java
@@ -6,8 +6,6 @@
 import com.beust.jcommander.ParameterException;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import lombok.extern.slf4j.Slf4j;
-import org.apache.logging.log4j.Level;
-import org.apache.logging.log4j.LogManager;
 
 import org.datadog.jmxfetch.reporter.Reporter;
 import org.datadog.jmxfetch.tasks.TaskMethod;
@@ -17,6 +15,7 @@
 import org.datadog.jmxfetch.util.ByteArraySearcher;
 import org.datadog.jmxfetch.util.CustomLogger;
 import org.datadog.jmxfetch.util.FileHelper;
+import org.datadog.jmxfetch.util.LogLevel;
 import org.datadog.jmxfetch.util.MetadataHelper;
 import org.datadog.jmxfetch.util.ServiceCheckHelper;
 import org.slf4j.Marker;
@@ -144,7 +143,7 @@ public static void main(String[] args) {
             // not needed in dd-java-agent, which calls run directly.
 
             // Set up the logger to add file handler
-            CustomLogger.setup(Level.toLevel(config.getLogLevel()),
+            CustomLogger.setup(LogLevel.fromString(config.getLogLevel()),
                     config.getLogLocation(),
                     config.isLogFormatRfc3339());
 
@@ -159,21 +158,18 @@ public static void main(String[] args) {
      * System#exit}.
      */
     public static int run(AppConfig config) {
-        Marker fatal = MarkerFactory.getMarker("FATAL");
         String action = config.getAction();
 
         // The specified action is unknown
         if (!AppConfig.ACTIONS.contains(action)) {
-            log.error(fatal,
-                    action + " is not in " + AppConfig.ACTIONS + ". Exiting.");
+            log.error(action + " is not in " + AppConfig.ACTIONS + ". Exiting.");
             return 1;
         }
 
         if (!action.equals(AppConfig.ACTION_COLLECT)
             && !(config.isConsoleReporter() || config.isJsonReporter())) {
             // The "list_*" actions can not be used with the statsd reporter
-            log.error(fatal,
-                      action
+            log.error(action
                       + " argument can only be used with the console or json reporter. Exiting.");
             return 1;
         }
@@ -230,8 +226,8 @@ private static void attachShutdownHook() {
                 @Override
                 public void run() {
                     log.info("JMXFetch is closing");
-                    // Properly close log handlers
-                    LogManager.shutdown();
+                    // make sure log handlers are properly closed
+                    CustomLogger.shutdown();
                 }
             }
         );
@@ -1192,7 +1188,7 @@ private <T> void processCollectionStatus(
                                     + " metrics.";
 
                     instanceStatus = Status.STATUS_WARNING;
-                    CustomLogger.laconic(log, Level.WARN, instanceMessage, 0);
+                    CustomLogger.laconic(log, LogLevel.WARN, instanceMessage, 0);
                 }
 
                 if (numberOfMetrics > 0) {

diff --git a/src/main/java/org/datadog/jmxfetch/AppConfig.java b/src/main/java/org/datadog/jmxfetch/AppConfig.java
@@ -10,7 +10,7 @@
 import org.datadog.jmxfetch.reporter.ConsoleReporter;
 import org.datadog.jmxfetch.reporter.JsonReporter;
 import org.datadog.jmxfetch.reporter.Reporter;
-import org.datadog.jmxfetch.validator.Log4JLevelValidator;
+import org.datadog.jmxfetch.validator.LogLevelValidator;
 import org.datadog.jmxfetch.validator.PositiveIntegerValidator;
 import org.datadog.jmxfetch.validator.ReporterValidator;
 
@@ -72,7 +72,7 @@ public class AppConfig {
     @Parameter(
             names = {"--log_level", "-L"},
             description = "Level of verbosity",
-            validateWith = Log4JLevelValidator.class,
+            validateWith = LogLevelValidator.class,
             required = false)
     @Builder.Default
     private String logLevel = "INFO";