#!/usr/bin/env bash
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
#   limitations under the License.


#set -x
ulimit -n 1024

### Setup some variables.  
### SVN_REVISION and BUILD_URL are set by Hudson if it is run by patch process
### Read variables from properties file
bindir=$(dirname $0)

# Defaults
if [ -z "$MAVEN_HOME" ]; then
  MVN=mvn
else
  MVN=$MAVEN_HOME/bin/mvn
fi

PROJECT_NAME=Hadoop
JENKINS=false
PATCH_DIR=/tmp
SUPPORT_DIR=/tmp
BASEDIR=$(pwd)
BUILD_NATIVE=true
PS=${PS:-ps}
AWK=${AWK:-awk}
WGET=${WGET:-wget}
SVN=${SVN:-svn}
GREP=${GREP:-grep}
PATCH=${PATCH:-patch}
DIFF=${DIFF:-diff}
JIRACLI=${JIRA:-jira}
FINDBUGS_HOME=${FINDBUGS_HOME}
FORREST_HOME=${FORREST_HOME}
ECLIPSE_HOME=${ECLIPSE_HOME}

###############################################################################
printUsage() {
  echo "Usage: $0 [options] patch-file | defect-number"
  echo
  echo "Where:"
  echo "  patch-file is a local patch file containing the changes to test"
  echo "  defect-number is a JIRA defect number (e.g. 'HADOOP-1234') to test (Jenkins only)"
  echo
  echo "Options:"
  echo "--patch-dir=<dir>      The directory for working and output files (default '/tmp')"
  echo "--basedir=<dir>        The directory to apply the patch to (default current directory)"
  echo "--mvn-cmd=<cmd>        The 'mvn' command to use (default \$MAVEN_HOME/bin/mvn, or 'mvn')"
  echo "--ps-cmd=<cmd>         The 'ps' command to use (default 'ps')"
  echo "--awk-cmd=<cmd>        The 'awk' command to use (default 'awk')"
  echo "--svn-cmd=<cmd>        The 'svn' command to use (default 'svn')"
  echo "--grep-cmd=<cmd>       The 'grep' command to use (default 'grep')"
  echo "--patch-cmd=<cmd>      The 'patch' command to use (default 'patch')"
  echo "--diff-cmd=<cmd>       The 'diff' command to use (default 'diff')"
  echo "--findbugs-home=<path> Findbugs home directory (default FINDBUGS_HOME environment variable)"
  echo "--forrest-home=<path>  Forrest home directory (default FORREST_HOME environment variable)"
  echo "--dirty-workspace      Allow the local SVN workspace to have uncommitted changes"
  echo "--run-tests            Run all tests below the base directory"
  echo "--build-native=<bool>  If true, then build native components (default 'true')"
  echo
  echo "Jenkins-only options:"
  echo "--jenkins              Run by Jenkins (runs tests and posts results to JIRA)"
  echo "--support-dir=<dir>    The directory to find support files in"
  echo "--wget-cmd=<cmd>       The 'wget' command to use (default 'wget')"
  echo "--jira-cmd=<cmd>       The 'jira' command to use (default 'jira')"
  echo "--jira-password=<pw>   The password for the 'jira' command"
  echo "--eclipse-home=<path>  Eclipse home directory (default ECLIPSE_HOME environment variable)"
}

###############################################################################
parseArgs() {
  for i in $*
  do
    case $i in
    --jenkins)
      JENKINS=true
      ;;
    --patch-dir=*)
      PATCH_DIR=${i#*=}
      ;;
    --support-dir=*)
      SUPPORT_DIR=${i#*=}
      ;;
    --basedir=*)
      BASEDIR=${i#*=}
      ;;
    --mvn-cmd=*)
      MVN=${i#*=}
      ;;
    --ps-cmd=*)
      PS=${i#*=}
      ;;
    --awk-cmd=*)
      AWK=${i#*=}
      ;;
    --wget-cmd=*)
      WGET=${i#*=}
      ;;
    --svn-cmd=*)
      SVN=${i#*=}
      ;;
    --grep-cmd=*)
      GREP=${i#*=}
      ;;
    --patch-cmd=*)
      PATCH=${i#*=}
      ;;
    --diff-cmd=*)
      DIFF=${i#*=}
      ;;
    --jira-cmd=*)
      JIRACLI=${i#*=}
      ;;
    --jira-password=*)
      JIRA_PASSWD=${i#*=}
      ;;
    --findbugs-home=*)
      FINDBUGS_HOME=${i#*=}
      ;;
    --forrest-home=*)
      FORREST_HOME=${i#*=}
      ;;
    --eclipse-home=*)
      ECLIPSE_HOME=${i#*=}
      ;;
    --dirty-workspace)
      DIRTY_WORKSPACE=true
      ;;
    --run-tests)
      RUN_TESTS=true
      ;;
    --build-native=*)
      BUILD_NATIVE=${i#*=}
      ;;
    *)
      PATCH_OR_DEFECT=$i
      ;;
    esac
  done
  if [[ $BUILD_NATIVE == "true" ]] ; then
    NATIVE_PROFILE=-Pnative
    REQUIRE_TEST_LIB_HADOOP=-Drequire.test.libhadoop
  fi
  if [ -z "$PATCH_OR_DEFECT" ]; then
    printUsage
    exit 1
  fi
  if [[ $JENKINS == "true" ]] ; then
    echo "Running in Jenkins mode"
    defect=$PATCH_OR_DEFECT
    ECLIPSE_PROPERTY="-Declipse.home=$ECLIPSE_HOME"
  else
    echo "Running in developer mode"
    JENKINS=false
    ### PATCH_FILE contains the location of the patchfile
    PATCH_FILE=$PATCH_OR_DEFECT
    if [[ ! -e "$PATCH_FILE" ]] ; then
      echo "Unable to locate the patch file $PATCH_FILE"
      cleanupAndExit 0
    fi
    ### Check if $PATCH_DIR exists. If it does not exist, create a new directory
    if [[ ! -e "$PATCH_DIR" ]] ; then
      mkdir "$PATCH_DIR"
      if [[ $? == 0 ]] ; then 
        echo "$PATCH_DIR has been created"
      else
        echo "Unable to create $PATCH_DIR"
        cleanupAndExit 0
      fi
    fi
    ### Obtain the patch filename to append it to the version number
    defect=`basename $PATCH_FILE`
  fi
}

###############################################################################
checkout () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Testing patch for ${defect}."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  ### When run by a developer, if the workspace contains modifications, do not continue
  ### unless the --dirty-workspace option was set
  status=`$SVN stat --ignore-externals | sed -e '/^X[ ]*/D'`
  if [[ $JENKINS == "false" ]] ; then
    if [[ "$status" != "" && -z $DIRTY_WORKSPACE ]] ; then
      echo "ERROR: can't run in a workspace that contains the following modifications"
      echo "$status"
      cleanupAndExit 1
    fi
    echo
  else   
    cd $BASEDIR
    $SVN revert -R .
    rm -rf `$SVN status --no-ignore`
    $SVN update
  fi
  return $?
}

###############################################################################
downloadPatch () {
  ### Download latest patch file (ignoring .htm and .html) when run from patch process
  if [[ $JENKINS == "true" ]] ; then
    $WGET -q -O $PATCH_DIR/jira http://issues.apache.org/jira/browse/$defect
    if [[ `$GREP -c 'Patch Available' $PATCH_DIR/jira` == 0 ]] ; then
      echo "$defect is not \"Patch Available\".  Exiting."
      cleanupAndExit 0
    fi
    relativePatchURL=`$GREP -o '"/jira/secure/attachment/[0-9]*/[^"]*' $PATCH_DIR/jira | $GREP -v -e 'htm[l]*$' | sort | tail -1 | $GREP -o '/jira/secure/attachment/[0-9]*/[^"]*'`
    patchURL="http://issues.apache.org${relativePatchURL}"
    patchNum=`echo $patchURL | $GREP -o '[0-9]*/' | $GREP -o '[0-9]*'`
    echo "$defect patch is being downloaded at `date` from"
    echo "$patchURL"
    $WGET -q -O $PATCH_DIR/patch $patchURL
    VERSION=${SVN_REVISION}_${defect}_PATCH-${patchNum}
    JIRA_COMMENT="Here are the results of testing the latest attachment 
  $patchURL
  against trunk revision ${SVN_REVISION}."

    ### Copy in any supporting files needed by this process
    cp -r $SUPPORT_DIR/lib/* ./lib
    #PENDING: cp -f $SUPPORT_DIR/etc/checkstyle* ./src/test
  ### Copy the patch file to $PATCH_DIR
  else
    VERSION=PATCH-${defect}
    cp $PATCH_FILE $PATCH_DIR/patch
    if [[ $? == 0 ]] ; then
      echo "Patch file $PATCH_FILE copied to $PATCH_DIR"
    else
      echo "Could not copy $PATCH_FILE to $PATCH_DIR"
      cleanupAndExit 0
    fi
  fi
}

###############################################################################
verifyPatch () {
  # Before building, check to make sure that the patch is valid
  $bindir/smart-apply-patch.sh $PATCH_DIR/patch dryrun
  if [[ $? != 0 ]] ; then
    echo "PATCH APPLICATION FAILED"
    JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 patch{color}.  The patch command could not apply the patch."
    return 1
  else
    return 0
  fi
}

###############################################################################
prebuildWithoutPatch () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo " Pre-build trunk to verify trunk stability and javac warnings" 
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  if [[ ! -d hadoop-common-project ]]; then
    cd $bindir/..
    echo "Compiling $(pwd)"
    echo "$MVN clean test -DskipTests > $PATCH_DIR/trunkCompile.txt 2>&1"
    $MVN clean test -DskipTests > $PATCH_DIR/trunkCompile.txt 2>&1
    if [[ $? != 0 ]] ; then
      echo "Top-level trunk compilation is broken?"
      JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 patch{color}.  Top-level trunk compilation may be broken."
      return 1
    fi
    cd -
  fi
  echo "Compiling $(pwd)"
  echo "$MVN clean test -DskipTests -D${PROJECT_NAME}PatchProcess -Ptest-patch > $PATCH_DIR/trunkJavacWarnings.txt 2>&1"
  $MVN clean test -DskipTests -D${PROJECT_NAME}PatchProcess -Ptest-patch > $PATCH_DIR/trunkJavacWarnings.txt 2>&1
  if [[ $? != 0 ]] ; then
    echo "Trunk compilation is broken?"
    JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 patch{color}.  Trunk compilation may be broken."
    return 1
  fi

  echo "$MVN clean test javadoc:javadoc -DskipTests -Pdocs -D${PROJECT_NAME}PatchProcess > $PATCH_DIR/trunkJavadocWarnings.txt 2>&1"
  $MVN clean test javadoc:javadoc -DskipTests -Pdocs -D${PROJECT_NAME}PatchProcess > $PATCH_DIR/trunkJavadocWarnings.txt 2>&1
  if [[ $? != 0 ]] ; then
    echo "Trunk javadoc compilation is broken?"
    JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 patch{color}.  Trunk compilation may be broken."
    return 1
  fi

  return 0
}

###############################################################################
### Check for @author tags in the patch
checkAuthor () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Checking there are no @author tags in the patch."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  authorTags=`$GREP -c -i '@author' $PATCH_DIR/patch`
  echo "There appear to be $authorTags @author tags in the patch."
  if [[ $authorTags != 0 ]] ; then
    JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 @author{color}.  The patch appears to contain $authorTags @author tags which the Hadoop community has agreed to not allow in code contributions."
    return 1
  fi
  JIRA_COMMENT="$JIRA_COMMENT

    {color:green}+1 @author{color}.  The patch does not contain any @author tags."
  return 0
}

###############################################################################
### Check for tests in the patch
checkTests () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Checking there are new or changed tests in the patch."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  testReferences=`$GREP -c -i -e '^+++.*/test' $PATCH_DIR/patch`
  echo "There appear to be $testReferences test files referenced in the patch."
  if [[ $testReferences == 0 ]] ; then
    if [[ $JENKINS == "true" ]] ; then
      patchIsDoc=`$GREP -c -i 'title="documentation' $PATCH_DIR/jira`
      if [[ $patchIsDoc != 0 ]] ; then
        echo "The patch appears to be a documentation patch that doesn't require tests."
        JIRA_COMMENT="$JIRA_COMMENT

    {color:green}+0 tests included{color}.  The patch appears to be a documentation patch that doesn't require tests."
        return 0
      fi
    fi
    JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch."
    return 1
  fi
  JIRA_COMMENT="$JIRA_COMMENT

    {color:green}+1 tests included{color}.  The patch appears to include $testReferences new or modified test files."
  return 0
}

cleanUpXml () {
  cd $BASEDIR/conf
  for file in `ls *.xml.template`
    do
      rm -f `basename $file .template`
    done
  cd $BASEDIR  
}

###############################################################################
### Attempt to apply the patch
applyPatch () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Applying patch."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  export PATCH
  $bindir/smart-apply-patch.sh $PATCH_DIR/patch
  if [[ $? != 0 ]] ; then
    echo "PATCH APPLICATION FAILED"
    JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 patch{color}.  The patch command could not apply the patch."
    return 1
  fi
  return 0
}

###############################################################################
calculateJavadocWarnings() {
    WARNING_FILE="$1"
    RET=$(egrep "^[0-9]+ warnings$" "$WARNING_FILE" | awk '{sum+=$1} END {print sum}')
}

### Check there are no javadoc warnings
checkJavadocWarnings () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Determining number of patched javadoc warnings."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  echo "$MVN clean test javadoc:javadoc -DskipTests -Pdocs -D${PROJECT_NAME}PatchProcess > $PATCH_DIR/patchJavadocWarnings.txt 2>&1"
  if [ -d hadoop-project ]; then
    (cd hadoop-project; $MVN install > /dev/null 2>&1)
  fi
  if [ -d hadoop-common-project/hadoop-annotations ]; then  
    (cd hadoop-common-project/hadoop-annotations; $MVN install > /dev/null 2>&1)
  fi
  $MVN clean test javadoc:javadoc -DskipTests -Pdocs -D${PROJECT_NAME}PatchProcess > $PATCH_DIR/patchJavadocWarnings.txt 2>&1
  calculateJavadocWarnings "$PATCH_DIR/trunkJavadocWarnings.txt"
  numTrunkJavadocWarnings=$RET
  calculateJavadocWarnings "$PATCH_DIR/patchJavadocWarnings.txt"
  numPatchJavadocWarnings=$RET
  grep -i warning "$PATCH_DIR/trunkJavadocWarnings.txt" > "$PATCH_DIR/trunkJavadocWarningsFiltered.txt"
  grep -i warning "$PATCH_DIR/patchJavadocWarnings.txt" > "$PATCH_DIR/patchJavadocWarningsFiltered.txt"
  diff -u "$PATCH_DIR/trunkJavadocWarningsFiltered.txt" \
          "$PATCH_DIR/patchJavadocWarningsFiltered.txt" > \
          "$PATCH_DIR/diffJavadocWarnings.txt"
  rm -f "$PATCH_DIR/trunkJavadocWarningsFiltered.txt" "$PATCH_DIR/patchJavadocWarningsFiltered.txt"
  echo "There appear to be $numTrunkJavadocWarnings javadoc warnings before the patch and $numPatchJavadocWarnings javadoc warnings after applying the patch."
  if [[ $numTrunkJavadocWarnings != "" && $numPatchJavadocWarnings != "" ]] ; then
    if [[ $numPatchJavadocWarnings -gt $numTrunkJavadocWarnings ]] ; then
      JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 javadoc{color}.  The javadoc tool appears to have generated `expr $(($numPatchJavadocWarnings-$numTrunkJavadocWarnings))` warning messages.
        See $BUILD_URL/artifact/trunk/patchprocess/diffJavadocWarnings.txt for details."
        return 1
    fi
  fi
  JIRA_COMMENT="$JIRA_COMMENT

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages."
  return 0
}

###############################################################################
### Check there are no changes in the number of Javac warnings
checkJavacWarnings () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Determining number of patched javac warnings."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  echo "$MVN clean test -DskipTests -D${PROJECT_NAME}PatchProcess $NATIVE_PROFILE -Ptest-patch > $PATCH_DIR/patchJavacWarnings.txt 2>&1"
  $MVN clean test -DskipTests -D${PROJECT_NAME}PatchProcess $NATIVE_PROFILE -Ptest-patch > $PATCH_DIR/patchJavacWarnings.txt 2>&1
  if [[ $? != 0 ]] ; then
    JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 javac{color:red}.  The patch appears to cause the build to fail."
    return 2
  fi
  ### Compare trunk and patch javac warning numbers
  if [[ -f $PATCH_DIR/patchJavacWarnings.txt ]] ; then
    $GREP '\[WARNING\]' $PATCH_DIR/trunkJavacWarnings.txt > $PATCH_DIR/filteredTrunkJavacWarnings.txt
    $GREP '\[WARNING\]' $PATCH_DIR/patchJavacWarnings.txt > $PATCH_DIR/filteredPatchJavacWarnings.txt
    trunkJavacWarnings=`cat $PATCH_DIR/filteredTrunkJavacWarnings.txt | $AWK 'BEGIN {total = 0} {total += 1} END {print total}'`
    patchJavacWarnings=`cat $PATCH_DIR/filteredPatchJavacWarnings.txt | $AWK 'BEGIN {total = 0} {total += 1} END {print total}'`
    echo "There appear to be $trunkJavacWarnings javac compiler warnings before the patch and $patchJavacWarnings javac compiler warnings after applying the patch."
    if [[ $patchJavacWarnings != "" && $trunkJavacWarnings != "" ]] ; then
      if [[ $patchJavacWarnings -gt $trunkJavacWarnings ]] ; then
        JIRA_COMMENT="$JIRA_COMMENT

      {color:red}-1 javac{color}.  The applied patch generated $patchJavacWarnings javac compiler warnings (more than the trunk's current $trunkJavacWarnings warnings)."

    $DIFF $PATCH_DIR/filteredTrunkJavacWarnings.txt $PATCH_DIR/filteredPatchJavacWarnings.txt > $PATCH_DIR/diffJavacWarnings.txt 
        JIRA_COMMENT_FOOTER="Javac warnings: $BUILD_URL/artifact/trunk/patchprocess/diffJavacWarnings.txt
$JIRA_COMMENT_FOOTER"

        return 1
      fi
    fi
  fi
  JIRA_COMMENT="$JIRA_COMMENT

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of javac compiler warnings."
  return 0
}

###############################################################################
### Check there are no changes in the number of release audit (RAT) warnings
checkReleaseAuditWarnings () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Determining number of patched release audit warnings."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  echo "$MVN apache-rat:check -D${PROJECT_NAME}PatchProcess > $PATCH_DIR/patchReleaseAuditOutput.txt 2>&1"
  $MVN apache-rat:check -D${PROJECT_NAME}PatchProcess > $PATCH_DIR/patchReleaseAuditOutput.txt 2>&1
  find $BASEDIR -name rat.txt | xargs cat > $PATCH_DIR/patchReleaseAuditWarnings.txt

  ### Compare trunk and patch release audit warning numbers
  if [[ -f $PATCH_DIR/patchReleaseAuditWarnings.txt ]] ; then
    patchReleaseAuditWarnings=`$GREP -c '\!?????' $PATCH_DIR/patchReleaseAuditWarnings.txt`
    echo ""
    echo ""
    echo "There appear to be $patchReleaseAuditWarnings release audit warnings after applying the patch."
    if [[ $patchReleaseAuditWarnings != "" ]] ; then
      if [[ $patchReleaseAuditWarnings -gt 0 ]] ; then
        JIRA_COMMENT="$JIRA_COMMENT

        {color:red}-1 release audit{color}.  The applied patch generated $patchReleaseAuditWarnings release audit warnings."
        $GREP '\!?????' $PATCH_DIR/patchReleaseAuditWarnings.txt > $PATCH_DIR/patchReleaseAuditProblems.txt
        echo "Lines that start with ????? in the release audit report indicate files that do not have an Apache license header." >> $PATCH_DIR/patchReleaseAuditProblems.txt
        JIRA_COMMENT_FOOTER="Release audit warnings: $BUILD_URL/artifact/trunk/patchprocess/patchReleaseAuditProblems.txt
$JIRA_COMMENT_FOOTER"
        return 1
      fi
    fi
  fi
  JIRA_COMMENT="$JIRA_COMMENT

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number of release audit warnings."
  return 0
}

###############################################################################
### Check there are no changes in the number of Checkstyle warnings
checkStyle () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Determining number of patched checkstyle warnings."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  echo "THIS IS NOT IMPLEMENTED YET"
  echo ""
  echo ""
  echo "$MVN test checkstyle:checkstyle -DskipTests -D${PROJECT_NAME}PatchProcess"
  $MVN test checkstyle:checkstyle -DskipTests -D${PROJECT_NAME}PatchProcess

  JIRA_COMMENT_FOOTER="Checkstyle results: $BUILD_URL/artifact/trunk/build/test/checkstyle-errors.html
$JIRA_COMMENT_FOOTER"
  ### TODO: calculate actual patchStyleErrors
#  patchStyleErrors=0
#  if [[ $patchStyleErrors != 0 ]] ; then
#    JIRA_COMMENT="$JIRA_COMMENT
#
#    {color:red}-1 checkstyle{color}.  The patch generated $patchStyleErrors code style errors."
#    return 1
#  fi
#  JIRA_COMMENT="$JIRA_COMMENT
#
#    {color:green}+1 checkstyle{color}.  The patch generated 0 code style errors."
  return 0
}

###############################################################################
### Install the new jars so tests and findbugs can find all of the updated jars 
buildAndInstall () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Installing all of the jars"
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  echo "$MVN install -Dmaven.javadoc.skip=true -DskipTests -D${PROJECT_NAME}PatchProcess"
  $MVN install -Dmaven.javadoc.skip=true -DskipTests -D${PROJECT_NAME}PatchProcess
  return $?
}


###############################################################################
### Check there are no changes in the number of Findbugs warnings
checkFindbugsWarnings () {
  findbugs_version=`${FINDBUGS_HOME}/bin/findbugs -version`
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Determining number of patched Findbugs warnings."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  
  modules=$(findModules)
  rc=0
  for module in $modules;
  do
    cd $module
    echo "  Running findbugs in $module"
    module_suffix=`basename ${module}`
    echo "$MVN clean test findbugs:findbugs -DskipTests -D${PROJECT_NAME}PatchProcess < /dev/null > $PATCH_DIR/patchFindBugsOutput${module_suffix}.txt 2>&1" 
    $MVN clean test findbugs:findbugs -DskipTests -D${PROJECT_NAME}PatchProcess < /dev/null > $PATCH_DIR/patchFindBugsOutput${module_suffix}.txt 2>&1
    (( rc = rc + $? ))
    cd -
  done

  if [ $rc != 0 ] ; then
    JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 findbugs{color}.  The patch appears to cause Findbugs (version ${findbugs_version}) to fail."
    return 1
  fi
    
  findbugsWarnings=0
  for file in $(find $BASEDIR -name findbugsXml.xml)
  do
    relative_file=${file#$BASEDIR/} # strip leading $BASEDIR prefix
    if [ ! $relative_file == "target/findbugsXml.xml" ]; then
      module_suffix=${relative_file%/target/findbugsXml.xml} # strip trailing path
      module_suffix=`basename ${module_suffix}`
    fi
    
    cp $file $PATCH_DIR/patchFindbugsWarnings${module_suffix}.xml
    $FINDBUGS_HOME/bin/setBugDatabaseInfo -timestamp "01/01/2000" \
      $PATCH_DIR/patchFindbugsWarnings${module_suffix}.xml \
      $PATCH_DIR/patchFindbugsWarnings${module_suffix}.xml
    newFindbugsWarnings=`$FINDBUGS_HOME/bin/filterBugs -first "01/01/2000" $PATCH_DIR/patchFindbugsWarnings${module_suffix}.xml \
      $PATCH_DIR/newPatchFindbugsWarnings${module_suffix}.xml | $AWK '{print $1}'`
    echo "Found $newFindbugsWarnings Findbugs warnings ($file)"
    findbugsWarnings=$((findbugsWarnings+newFindbugsWarnings))
    $FINDBUGS_HOME/bin/convertXmlToText -html \
      $PATCH_DIR/newPatchFindbugsWarnings${module_suffix}.xml \
      $PATCH_DIR/newPatchFindbugsWarnings${module_suffix}.html
    if [[ $newFindbugsWarnings > 0 ]] ; then
      JIRA_COMMENT_FOOTER="Findbugs warnings: $BUILD_URL/artifact/trunk/patchprocess/newPatchFindbugsWarnings${module_suffix}.html
$JIRA_COMMENT_FOOTER"
    fi
  done

  if [[ $findbugsWarnings -gt 0 ]] ; then
    JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 findbugs{color}.  The patch appears to introduce $findbugsWarnings new Findbugs (version ${findbugs_version}) warnings."
    return 1
  fi
  JIRA_COMMENT="$JIRA_COMMENT

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version ${findbugs_version}) warnings."
  return 0
}

###############################################################################
### Verify eclipse:eclipse works
checkEclipseGeneration () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Running mvn eclipse:eclipse."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""

  echo "$MVN eclipse:eclipse -D${PROJECT_NAME}PatchProcess > $PATCH_DIR/patchEclipseOutput.txt 2>&1"
  $MVN eclipse:eclipse -D${PROJECT_NAME}PatchProcess > $PATCH_DIR/patchEclipseOutput.txt 2>&1
  if [[ $? != 0 ]] ; then
      JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 eclipse:eclipse{color}.  The patch failed to build with eclipse:eclipse."
    return 1
  fi
  JIRA_COMMENT="$JIRA_COMMENT

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse."
  return 0
}


###############################################################################
### Run the tests
runTests () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Running tests."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""

  failed_tests=""
  modules=$(findModules)
  #
  # If we are building hadoop-hdfs-project, we must build the native component
  # of hadoop-common-project first.  In order to accomplish this, we move the
  # hadoop-hdfs subprojects to the end of the list so that common will come
  # first.
  #
  # Of course, we may not be building hadoop-common at all-- in this case, we
  # explicitly insert a mvn compile -Pnative of common, to ensure that the
  # native libraries show up where we need them.
  #
  building_common=0
  for module in $modules; do
      if [[ $module == hadoop-hdfs-project* ]]; then
          hdfs_modules="$hdfs_modules $module"
      elif [[ $module == hadoop-common-project* ]]; then
          ordered_modules="$ordered_modules $module"
          building_common=1
      else
          ordered_modules="$ordered_modules $module"
      fi
  done
  if [ -n "$hdfs_modules" ]; then
      ordered_modules="$ordered_modules $hdfs_modules"
      if [[ $building_common -eq 0 ]]; then
          echo "  Building hadoop-common with -Pnative in order to provide \
libhadoop.so to the hadoop-hdfs unit tests."
          echo "  $MVN compile $NATIVE_PROFILE -D${PROJECT_NAME}PatchProcess"
          if ! $MVN compile $NATIVE_PROFILE -D${PROJECT_NAME}PatchProcess; then
              JIRA_COMMENT="$JIRA_COMMENT
        {color:red}-1 core tests{color}.  Failed to build the native portion \
of hadoop-common prior to running the unit tests in $ordered_modules"
              return 1
          fi
      fi
  fi
  failed_test_builds=""
  test_timeouts=""
  for module in $ordered_modules; do
    cd $module
    module_suffix=`basename ${module}`
    test_logfile=$PATCH_DIR/testrun_${module_suffix}.txt
    echo "  Running tests in $module"
    echo "  $MVN clean install -fn $NATIVE_PROFILE $REQUIRE_TEST_LIB_HADOOP -D${PROJECT_NAME}PatchProcess"
    $MVN clean install -fae $NATIVE_PROFILE $REQUIRE_TEST_LIB_HADOOP -D${PROJECT_NAME}PatchProcess > $test_logfile 2>&1
    test_build_result=$?
    cat $test_logfile
    module_test_timeouts=`$AWK '/^Running / { if (last) { print last } last=$2 } /^Tests run: / { last="" }' $test_logfile`
    if [[ -n "$module_test_timeouts" ]] ; then
      test_timeouts="$test_timeouts
$module_test_timeouts"
    fi
    module_failed_tests=`find . -name 'TEST*.xml' | xargs $GREP  -l -E "<failure|<error" | sed -e "s|.*target/surefire-reports/TEST-|                  |g" | sed -e "s|\.xml||g"`
    if [[ -n "$module_failed_tests" ]] ; then
      failed_tests="${failed_tests}
${module_failed_tests}"
    fi
    if [[ $test_build_result != 0 && -z "$module_failed_tests" && -z "$module_test_timeouts" ]] ; then
      failed_test_builds="$module $failed_test_builds"
    fi
    cd -
  done
  result=0
  comment_prefix="    {color:red}-1 core tests{color}."
  if [[ -n "$failed_tests" ]] ; then
    JIRA_COMMENT="$JIRA_COMMENT

$comment_prefix  The patch failed these unit tests in $modules:
$failed_tests"
    comment_prefix="                                    "
    result=1
  fi
  if [[ -n "$test_timeouts" ]] ; then
    JIRA_COMMENT="$JIRA_COMMENT

$comment_prefix  The following test timeouts occurred in $modules:
$test_timeouts"
    comment_prefix="                                    "
    result=1
  fi
  if [[ -n "$failed_test_builds" ]] ; then
    JIRA_COMMENT="$JIRA_COMMENT

$comment_prefix  The test build failed in $failed_test_builds"
    result=1
  fi
  if [[ $result == 0 ]] ; then
    JIRA_COMMENT="$JIRA_COMMENT

    {color:green}+1 core tests{color}.  The patch passed unit tests in $modules."
  fi
  return $result
}

###############################################################################
# Find the maven module containing the given file.
findModule (){
 dir=`dirname $1`
 while [ 1 ]
 do
  if [ -f "$dir/pom.xml" ]
  then
    echo $dir
    return
  else
    dir=`dirname $dir`
  fi
 done
}

findModules () {
  # Come up with a list of changed files into $TMP
  TMP=/tmp/tmp.paths.$$
  $GREP '^+++ \|^--- ' $PATCH_DIR/patch | cut -c '5-' | $GREP -v /dev/null | sort | uniq > $TMP
  
  # if all of the lines start with a/ or b/, then this is a git patch that
  # was generated without --no-prefix
  if ! $GREP -qv '^a/\|^b/' $TMP ; then
    sed -i -e 's,^[ab]/,,' $TMP
  fi
  
  # Now find all the modules that were changed
  TMP_MODULES=/tmp/tmp.modules.$$
  for file in $(cut -f 1 $TMP | sort | uniq); do
    echo $(findModule $file) >> $TMP_MODULES
  done
  rm $TMP
  
  # Filter out modules without code 
  CHANGED_MODULES=""
  for module in $(cat $TMP_MODULES | sort | uniq); do
    $GREP "<packaging>pom</packaging>" $module/pom.xml > /dev/null
    if [ "$?" != 0 ]; then
      CHANGED_MODULES="$CHANGED_MODULES $module"
    fi
  done
  rm $TMP_MODULES
  echo $CHANGED_MODULES
}
###############################################################################
### Run the test-contrib target
runContribTests () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Running contrib tests."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""

  if [[ `$GREP -c 'test-contrib' build.xml` == 0 ]] ; then
    echo "No contrib tests in this project."
    return 0
  fi

  ### Kill any rogue build processes from the last attempt
  $PS auxwww | $GREP ${PROJECT_NAME}PatchProcess | $AWK '{print $2}' | /usr/bin/xargs -t -I {} /bin/kill -9 {} > /dev/null

  #echo "$ANT_HOME/bin/ant -Dversion="${VERSION}" $ECLIPSE_PROPERTY -DHadoopPatchProcess= -Dtest.junit.output.format=xml -Dtest.output=no test-contrib"
  #$ANT_HOME/bin/ant -Dversion="${VERSION}" $ECLIPSE_PROPERTY -DHadoopPatchProcess= -Dtest.junit.output.format=xml -Dtest.output=no test-contrib
  echo "NOP"
  if [[ $? != 0 ]] ; then
    JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 contrib tests{color}.  The patch failed contrib unit tests."
    return 1
  fi
  JIRA_COMMENT="$JIRA_COMMENT

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests."
  return 0
}

###############################################################################
### Run the inject-system-faults target
checkInjectSystemFaults () {
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Checking the integrity of system test framework code."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  
  ### Kill any rogue build processes from the last attempt
  $PS auxwww | $GREP ${PROJECT_NAME}PatchProcess | $AWK '{print $2}' | /usr/bin/xargs -t -I {} /bin/kill -9 {} > /dev/null

  #echo "$ANT_HOME/bin/ant -Dversion="${VERSION}" -DHadoopPatchProcess= -Dtest.junit.output.format=xml -Dtest.output=no -Dcompile.c++=yes -Dforrest.home=$FORREST_HOME inject-system-faults"
  #$ANT_HOME/bin/ant -Dversion="${VERSION}" -DHadoopPatchProcess= -Dtest.junit.output.format=xml -Dtest.output=no -Dcompile.c++=yes -Dforrest.home=$FORREST_HOME inject-system-faults
  echo "NOP"
  return 0
  if [[ $? != 0 ]] ; then
    JIRA_COMMENT="$JIRA_COMMENT

    {color:red}-1 system test framework{color}.  The patch failed system test framework compile."
    return 1
  fi
  JIRA_COMMENT="$JIRA_COMMENT

    {color:green}+1 system test framework{color}.  The patch passed system test framework compile."
  return 0
}

###############################################################################
### Submit a comment to the defect's Jira
submitJiraComment () {
  local result=$1
  ### Do not output the value of JIRA_COMMENT_FOOTER when run by a developer
  if [[  $JENKINS == "false" ]] ; then
    JIRA_COMMENT_FOOTER=""
  fi
  if [[ $result == 0 ]] ; then
    comment="{color:green}+1 overall{color}.  $JIRA_COMMENT

$JIRA_COMMENT_FOOTER"
  else
    comment="{color:red}-1 overall{color}.  $JIRA_COMMENT

$JIRA_COMMENT_FOOTER"
  fi
  ### Output the test result to the console
  echo "


$comment"  

  if [[ $JENKINS == "true" ]] ; then
    echo ""
    echo ""
    echo "======================================================================"
    echo "======================================================================"
    echo "    Adding comment to Jira."
    echo "======================================================================"
    echo "======================================================================"
    echo ""
    echo ""
    ### Update Jira with a comment
    export USER=hudson
    $JIRACLI -s https://issues.apache.org/jira -a addcomment -u hadoopqa -p $JIRA_PASSWD --comment "$comment" --issue $defect
    $JIRACLI -s https://issues.apache.org/jira -a logout -u hadoopqa -p $JIRA_PASSWD
  fi
}

###############################################################################
### Cleanup files
cleanupAndExit () {
  local result=$1
  if [[ $JENKINS == "true" ]] ; then
    if [ -e "$PATCH_DIR" ] ; then
      mv $PATCH_DIR $BASEDIR
    fi
  fi
  echo ""
  echo ""
  echo "======================================================================"
  echo "======================================================================"
  echo "    Finished build."
  echo "======================================================================"
  echo "======================================================================"
  echo ""
  echo ""
  exit $result
}

###############################################################################
###############################################################################
###############################################################################

JIRA_COMMENT=""
JIRA_COMMENT_FOOTER="Console output: $BUILD_URL/console

This message is automatically generated."

### Check if arguments to the script have been specified properly or not
parseArgs $@
cd $BASEDIR

checkout
RESULT=$?
if [[ $JENKINS == "true" ]] ; then
  if [[ $RESULT != 0 ]] ; then
    exit 100
  fi
fi
downloadPatch
verifyPatch
(( RESULT = RESULT + $? ))
if [[ $RESULT != 0 ]] ; then
  submitJiraComment 1
  cleanupAndExit 1
fi
prebuildWithoutPatch
(( RESULT = RESULT + $? ))
if [[ $RESULT != 0 ]] ; then
  submitJiraComment 1
  cleanupAndExit 1
fi
checkAuthor
(( RESULT = RESULT + $? ))

if [[ $JENKINS == "true" ]] ; then
  cleanUpXml
fi
checkTests
(( RESULT = RESULT + $? ))
applyPatch
APPLY_PATCH_RET=$?
(( RESULT = RESULT + $APPLY_PATCH_RET ))
if [[ $APPLY_PATCH_RET != 0 ]] ; then
  submitJiraComment 1
  cleanupAndExit 1
fi
checkJavacWarnings
JAVAC_RET=$?
#2 is returned if the code could not compile
if [[ $JAVAC_RET == 2 ]] ; then
  submitJiraComment 1
  cleanupAndExit 1
fi
(( RESULT = RESULT + $JAVAC_RET ))
checkJavadocWarnings
(( RESULT = RESULT + $? ))
### Checkstyle not implemented yet
#checkStyle
#(( RESULT = RESULT + $? ))
buildAndInstall
checkEclipseGeneration
(( RESULT = RESULT + $? ))
checkFindbugsWarnings
(( RESULT = RESULT + $? ))
checkReleaseAuditWarnings
(( RESULT = RESULT + $? ))
### Run tests for Jenkins or if explictly asked for by a developer
if [[ $JENKINS == "true" || $RUN_TESTS == "true" ]] ; then
  runTests
  (( RESULT = RESULT + $? ))
  runContribTests
  (( RESULT = RESULT + $? ))
fi
checkInjectSystemFaults
(( RESULT = RESULT + $? ))
JIRA_COMMENT_FOOTER="Test results: $BUILD_URL/testReport/
$JIRA_COMMENT_FOOTER"

submitJiraComment $RESULT
cleanupAndExit $RESULT