Add Rio/Gradle build

Rather than hacking stuff on top of the existing Ant build, add Rio/Gradle build files.
This allows leveraging CI-Gen and other Rio features.

In the immediate future, it solves the problem of SRC and JAVADOC packages not being published.

<rdar://problem/22790711> cie-zookeeper-3.4-client-15.6.1-sources.jar only has RAD related sources (not zookeeper)

build.gradle

@@ -0,0 +1,112 @@
+/*
+ *** TODO *** a number of non-essential improvements can be made to this build:
+ * generateJute does not declare outputs so it runs every time the build runs
+ * generateVersion does not declare outputs so it runs every time the build runs
+ * The idea project generation does not depend on generateJute and generateVersion
+ * Zookeeper launch scripts work only with the default Ant build
+ * The custom properties required for tests to pass are not set in idea
+*/
+
+buildscript {
+  dependencies {
+    classpath "com.apple.cie.rio:gradle-build-plugin:${rioGradlePluginVersion}"
+  }
+}
+
+apply plugin: 'rio-library'
+
+apply plugin: 'java'
+apply plugin: 'idea'
+
+sourceCompatibility = "${jdkVersion}"
+
+dependencies {
+  compile "com.apple.cie.rio:splunk-log-layouts-common:0.7.0"
+  compile "com.apple.cie.rio:splunk-log-layouts-log4j:0.7.0"
+  compile "org.slf4j:slf4j-api:1.7.5"
+  compile "org.slf4j:slf4j-log4j12:1.7.5"
+
+  compile "log4j:log4j:1.2.17"
+  compile "jline:jline:2.11"
+  compile "io.netty:netty:3.7.0.Final"
+  compile "commons-cli:commons-cli:1.2"
+  compile "org.mortbay.jetty:jetty:6.1.26"
+  compile "org.codehaus.jackson:jackson-mapper-asl:1.9.11"
+
+  runtime "org.slf4j:slf4j-api:1.6.1"
+  runtime "org.slf4j:slf4j-log4j12:1.6.1"
+  runtime "log4j:log4j:1.2.17.jar"
+
+  testCompile "junit:junit:4.12"
+  testCompile  "org.mockito:mockito-all:1.8.2"
+  testCompile  "checkstyle:checkstyle:5.0"
+
+}
+
+def generatedFilesFolder = new File( 'src/java/generated' )
+def testFolder = new File( '.out/test' )
+def testDataFolder = new File( '.out/test/data' )
+
+sourceSets.main.java.srcDirs += ["src/java/main", generatedFilesFolder]
+sourceSets.test.java.srcDirs += ["src/java/test"]
+
+task generatedClassesMkdir() {
+  description = 'Create folder where generated java code is output'
+  if( !generatedFilesFolder.exists() ) {
+    generatedFilesFolder.mkdirs()
+  }
+}
+
+task buildJuteCompiler(type: JavaCompile) {
+  description = 'Builds the Jute compiler'
+  source = fileTree(dir: 'src/java/main').matching { include 'org/apache/jute/**' }
+  destinationDir = sourceSets.main.output.classesDir
+  classpath = sourceSets.main.compileClasspath
+}
+
+task generateJute(type: JavaExec, dependsOn: ['buildJuteCompiler', 'generatedClassesMkdir']) {
+  description = 'Generates Java classes described in zookeeper.jute'
+  workingDir = generatedFilesFolder
+  main = 'org.apache.jute.compiler.generated.Rcc'
+  args = ["-l", "java", "../../zookeeper.jute" ]
+  classpath += sourceSets.main.compileClasspath
+  classpath += files(sourceSets.main.output.classesDir)
+}
+
+task buildVersionGenerator(type: JavaCompile) {
+  description = 'Builds the VerGen utility'
+  source = fileTree(dir: 'src/java/main').matching { include 'org/apache/zookeeper/version/util/**' }
+  destinationDir = sourceSets.main.output.classesDir
+  classpath = sourceSets.main.compileClasspath
+}
+
+task generateVersion(type: JavaExec, dependsOn: ['buildVersionGenerator', 'generatedClassesMkdir']) {
+  description = 'Generates Java version Info class using VerGen'
+  workingDir = generatedFilesFolder
+  main = 'org.apache.zookeeper.version.util.VerGen'
+  args = ["${version}", "1", new Date() ]
+  classpath += sourceSets.main.compileClasspath
+  classpath += files(sourceSets.main.output.classesDir)
+}
+
+// Before compiling Java, generate generated java classes
+compileJava.dependsOn += [generateJute, generateVersion]
+
+// Override for defaults properties when running tests
+tasks.withType(Test) {
+  systemProperty "build.test.dir", testFolder
+  systemProperty "test.data.dir", testDataFolder
+  systemProperty "log4j.configuration", "conf/log4j.properties"
+}
+
+task testFoldersMkdir() {
+  description = 'Create folders for test output'
+  if( !testFolder.exists() ) {
+    testFolder.mkdirs()
+  }
+  if( !testDataFolder.exists() ) {
+    testDataFolder.mkdirs()
+  }
+}
+
+test.dependsOn += [testFoldersMkdir]

gradle.properties

@@ -0,0 +1,6 @@
+version=3.4.7.4
+group=com.apple.cie.zookeeper
+
+jdkVersion=1.7
+
+rioGradlePluginVersion=+

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Tue Aug 19 16:38:31 PDT 2014
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://artifacts.geo.apple.com/artifactory/gradle-distributions/gradle-2.2.1-all.zip

gradlew

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+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"

settings.gradle

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+rootProject.name = 'zookeeper'