[log4j] rolling back log4j2 to restore Java6 support (#315)

* Revert "Revert "[pom] log4j: bump to 2.13.2." (#311)"

This reverts commit 3e22553.

* Revert "[pom] log4j: bump to 2.13.2. (#309)"

This reverts commit 951b944.

* Revert "[log4j] migrate to log4j2 (#258) (#305)"

This reverts commit 032edaa.

.travis.yml

@@ -11,26 +11,24 @@ matrix:
   fast_finish: true
   include:
     - jdk: oraclejdk8
-      env:
+      env: 
        - DESC="Oracle JDK8 linting"
-       - CMD="mvn verify -B -Dhttps.protocols=TLSv1.2 -DskipTests -Dlog4j.configuration=log4j2.travis.properties"
+       - CMD="mvn verify -B -Dhttps.protocols=TLSv1.2 -DskipTests -Dlog4j.configuration=log4j.travis.properties"
 
     - jdk: oraclejdk8
-      env:
+      env: 
        - DESC="Oracle JDK8 testing"
-       - CMD="mvn test -B -Dhttps.protocols=TLSv1.2 -Dcheckstyle.skip=true -Dlog4j.configurationFile=log4j2.travis.properties"
+       - CMD="mvn test -B -Dhttps.protocols=TLSv1.2 -Dcheckstyle.skip=true -Dlog4j.configuration=log4j.travis.properties"
 
     - jdk: oraclejdk7
-      env:
+      env: 
        - DESC="Oracle JDK7 testing"
-       - CMD="mvn test -B -Dhttps.protocols=TLSv1.2 -Dcheckstyle.skip=true -Dlog4j.configurationFile=log4j2.travis.properties"
+       - CMD="mvn test -B -Dhttps.protocols=TLSv1.2 -Dcheckstyle.skip=true -Dlog4j.configuration=log4j.travis.properties"
 
     - jdk: openjdk7
-      env:
+      env: 
        - DESC="OpenJDK7 testing"
-       - CMD="mvn test -B -Dhttps.protocols=TLSv1.2 -Dcheckstyle.skip=true -Dlog4j.configurationFile=log4j2.travis.properties"
+       - CMD="mvn test -B -Dhttps.protocols=TLSv1.2 -Dcheckstyle.skip=true -Dlog4j.configuration=log4j.travis.properties"
 
-script: echo "Running $DESC..." && (eval $CMD)
+script: echo "Running $DESC..." && (eval $CMD) 
 
-after_failure:
-  - for log in target/surefire-reports/*.txt; do  echo "$log ========================" ; cat $log ; done

README.md

@@ -41,11 +41,6 @@ mvn checkstyle::check
 
 `Checkstyle` analysis is automatically executed prior to compiling the code, testing.
 
-# Generated code
-
-JMXFetch uses [Lombok](https://projectlombok.org/) to modify classes and generate additional code at runtime.
-You may need to [enable annotation processors](https://projectlombok.org/setup/overview) to compile in your IDE.
-
 # Testing
 
 To run unit test, issue the following command:

log4j.travis.properties

@@ -0,0 +1,8 @@
+log4j.rootLogger=INFO,stdout
+log4j.logger.com.endeca=INFO
+# Logger for crawl metrics
+log4j.logger.com.endeca.itl.web.metrics=INFO
+
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%p\t%d{ISO8601}\t%r\t%c\t[%t]\t%m%n

pom.xml

@@ -41,9 +41,7 @@
         <guava.version>27.1-android</guava.version> <!-- From the docs: If you need support for JDK 1.7 or Android, use the Android flavor. -->
         <java-dogstatsd-client.version>2.1.0</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>2.12.1</log4j.version>
-        <slf4j.version>1.7.26</slf4j.version>
+        <log4j.version>1.2.17</log4j.version>
         <jackson.version>2.10.0</jackson.version>
         <snakeyaml.version>1.13</snakeyaml.version>
         <!-- Note: using project checkstyle with AOSP style
@@ -123,19 +121,8 @@
             <version>${jackson.version}</version>
         </dependency>
         <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>1.18.8</version>
-            <scope>provided</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-api</artifactId>
-            <version>${slf4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-core</artifactId>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
             <version>${log4j.version}</version>
             <exclusions>
                 <exclusion>
@@ -152,11 +139,6 @@
                 </exclusion>
             </exclusions>
         </dependency>
-        <dependency>
-            <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-slf4j-impl</artifactId>
-            <version>${log4j.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.yaml</groupId>
             <artifactId>snakeyaml</artifactId>