#! /usr/bin/env bash
#
#/**
# * Licensed to the Apache Software Foundation (ASF) under one
# * or more contributor license agreements.  See the NOTICE file
# * distributed with this work for additional information
# * regarding copyright ownership.  The ASF licenses this file
# * to you 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.
# */
#
# The hbase command script.  Based on the hadoop command script putting
# in hbase classes, libs and configurations ahead of hadoop's.
#
# TODO: Narrow the amount of duplicated code.
#
# Environment Variables:
#
#   JAVA_HOME        The java implementation to use.  Overrides JAVA_HOME.
#
#   HBASE_CLASSPATH  Extra Java CLASSPATH entries.
#
#   HBASE_CLASSPATH_PREFIX Extra Java CLASSPATH entries that should be
#                    prefixed to the system classpath.
#
#   HBASE_HEAPSIZE   The maximum amount of heap to use.
#                    Default is unset and uses the JVMs default setting
#                    (usually 1/4th of the available memory).
#
#   HBASE_LIBRARY_PATH  HBase additions to JAVA_LIBRARY_PATH for adding
#                    native libraries.
#
#   HBASE_OPTS       Extra Java runtime options.
#
#   HBASE_CONF_DIR   Alternate conf dir. Default is ${HBASE_HOME}/conf.
#
#   HBASE_ROOT_LOGGER The root appender. Default is INFO,console
#
#   JRUBY_HOME       JRuby path: $JRUBY_HOME/lib/jruby.jar should exist.
#                    Defaults to the jar packaged with HBase.
#
#   JRUBY_OPTS       Extra options (eg '--1.9') passed to hbase.
#                    Empty by default.
#
#   HBASE_SHELL_OPTS Extra options passed to the hbase shell.
#                    Empty by default.
#
bin=`dirname "$0"`
bin=`cd "$bin">/dev/null; pwd`

# This will set HBASE_HOME, etc.
. "$bin"/hbase-config.sh

cygwin=false
case "`uname`" in
CYGWIN*) cygwin=true;;
esac

# Detect if we are in hbase sources dir
in_dev_env=false
if [ -d "${HBASE_HOME}/target" ]; then
  in_dev_env=true
fi

read -d '' options_string << EOF
Options:
  --config DIR     Configuration direction to use. Default: ./conf
  --hosts HOSTS    Override the list in 'regionservers' file
  --auth-as-server Authenticate to ZooKeeper using servers configuration
EOF
# if no args specified, show usage
if [ $# = 0 ]; then
  echo "Usage: hbase [<options>] <command> [<args>]"
  echo "$options_string"
  echo ""
  echo "Commands:"
  echo "Some commands take arguments. Pass no args or -h for usage."
  echo "  shell           Run the HBase shell"
  echo "  hbck            Run the hbase 'fsck' tool"
  echo "  snapshot        Tool for managing snapshots"
  echo "  wal             Write-ahead-log analyzer"
  echo "  hfile           Store file analyzer"
  echo "  zkcli           Run the ZooKeeper shell"
  echo "  master          Run an HBase HMaster node"
  echo "  regionserver    Run an HBase HRegionServer node"
  echo "  zookeeper       Run a ZooKeeper server"
  echo "  rest            Run an HBase REST server"
  echo "  thrift          Run the HBase Thrift server"
  echo "  thrift2         Run the HBase Thrift2 server"
  echo "  clean           Run the HBase clean up script"
  echo "  classpath       Dump hbase CLASSPATH"
  echo "  mapredcp        Dump CLASSPATH entries required by mapreduce"
  echo "  pe              Run PerformanceEvaluation"
  echo "  ltt             Run LoadTestTool"
  echo "  canary          Run the Canary tool"
  echo "  version         Print the version"
  echo "  backup          Backup tables for recovery"
  echo "  restore         Restore tables from existing backup image"
  echo "  CLASSNAME       Run the class named CLASSNAME"
  exit 1
fi

# get arguments
COMMAND=$1
shift

JAVA=$JAVA_HOME/bin/java

# override default settings for this command, if applicable
if [ -f "$HBASE_HOME/conf/hbase-env-$COMMAND.sh" ]; then
  . "$HBASE_HOME/conf/hbase-env-$COMMAND.sh"
fi

add_size_suffix() {
    # add an 'm' suffix if the argument is missing one, otherwise use whats there
    local val="$1"
    local lastchar=${val: -1}
    if [[ "mMgG" == *$lastchar* ]]; then
        echo $val
    else
        echo ${val}m
    fi
}

if [[ -n "$HBASE_HEAPSIZE" ]]; then
    JAVA_HEAP_MAX="-Xmx$(add_size_suffix $HBASE_HEAPSIZE)"
fi

if [[ -n "$HBASE_OFFHEAPSIZE" ]]; then
    JAVA_OFFHEAP_MAX="-XX:MaxDirectMemorySize=$(add_size_suffix $HBASE_OFFHEAPSIZE)"
fi

# so that filenames w/ spaces are handled correctly in loops below
ORIG_IFS=$IFS
IFS=

# CLASSPATH initially contains $HBASE_CONF_DIR
CLASSPATH="${HBASE_CONF_DIR}"
CLASSPATH=${CLASSPATH}:$JAVA_HOME/lib/tools.jar

add_to_cp_if_exists() {
  if [ -d "$@" ]; then
    CLASSPATH=${CLASSPATH}:"$@"
  fi
}

# For releases, add hbase & webapps to CLASSPATH
# Webapps must come first else it messes up Jetty
if [ -d "$HBASE_HOME/hbase-webapps" ]; then
  add_to_cp_if_exists "${HBASE_HOME}"
fi
#add if we are in a dev environment
if [ -d "$HBASE_HOME/hbase-server/target/hbase-webapps" ]; then
  if [ "$COMMAND" = "thrift" ] ; then
    add_to_cp_if_exists "${HBASE_HOME}/hbase-thrift/target"
  elif [ "$COMMAND" = "thrift2" ] ; then
    add_to_cp_if_exists "${HBASE_HOME}/hbase-thrift/target"
  elif [ "$COMMAND" = "rest" ] ; then
    add_to_cp_if_exists "${HBASE_HOME}/hbase-rest/target"
  else
    add_to_cp_if_exists "${HBASE_HOME}/hbase-server/target"
  fi
fi

add_maven_deps_to_classpath() {
  f="${HBASE_HOME}/hbase-build-configuration/target/cached_classpath.txt"
  if [ ! -f "${f}" ]
  then
      echo "As this is a development environment, we need ${f} to be generated from maven (command: mvn install -DskipTests)"
      exit 1
  fi
  CLASSPATH=${CLASSPATH}:`cat "${f}"`
}


#Add the development env class path stuff
if $in_dev_env; then
  add_maven_deps_to_classpath
fi

#add the hbase jars for each module
for f in $HBASE_HOME/hbase-jars/hbase*.jar; do
	if [[ $f = *sources.jar ]]
  then
    : # Skip sources.jar
  elif [ -f $f ]
  then
    CLASSPATH=${CLASSPATH}:$f;
  fi
done

# Add libs to CLASSPATH
for f in $HBASE_HOME/lib/*.jar; do
  CLASSPATH=${CLASSPATH}:$f;
done

# default log directory & file
if [ "$HBASE_LOG_DIR" = "" ]; then
  HBASE_LOG_DIR="$HBASE_HOME/logs"
fi
if [ "$HBASE_LOGFILE" = "" ]; then
  HBASE_LOGFILE='hbase.log'
fi

function append_path() {
  if [ -z "$1" ]; then
    echo $2
  else
    echo $1:$2
  fi
}

JAVA_PLATFORM=""

# if HBASE_LIBRARY_PATH is defined lets use it as first or second option
if [ "$HBASE_LIBRARY_PATH" != "" ]; then
  JAVA_LIBRARY_PATH=$(append_path "$JAVA_LIBRARY_PATH" "$HBASE_LIBRARY_PATH")
fi

#If avail, add Hadoop to the CLASSPATH and to the JAVA_LIBRARY_PATH
# Allow this functionality to be disabled
if [ "$HBASE_DISABLE_HADOOP_CLASSPATH_LOOKUP" != "true" ] ; then
  HADOOP_IN_PATH=$(PATH="${HADOOP_HOME:-${HADOOP_PREFIX}}/bin:$PATH" which hadoop 2>/dev/null)
  if [ -f ${HADOOP_IN_PATH} ]; then
    HADOOP_JAVA_LIBRARY_PATH=$(HADOOP_CLASSPATH="$CLASSPATH" ${HADOOP_IN_PATH} \
                               org.apache.hadoop.hbase.util.GetJavaProperty java.library.path 2>/dev/null)
    if [ -n "$HADOOP_JAVA_LIBRARY_PATH" ]; then
      JAVA_LIBRARY_PATH=$(append_path "${JAVA_LIBRARY_PATH}" "$HADOOP_JAVA_LIBRARY_PATH")
    fi
    CLASSPATH=$(append_path "${CLASSPATH}" `${HADOOP_IN_PATH} classpath 2>/dev/null`)
  fi
fi

# Add user-specified CLASSPATH last
if [ "$HBASE_CLASSPATH" != "" ]; then
  CLASSPATH=${CLASSPATH}:${HBASE_CLASSPATH}
fi

# Add user-specified CLASSPATH prefix first
if [ "$HBASE_CLASSPATH_PREFIX" != "" ]; then
  CLASSPATH=${HBASE_CLASSPATH_PREFIX}:${CLASSPATH}
fi

# cygwin path translation
if $cygwin; then
  CLASSPATH=`cygpath -p -w "$CLASSPATH"`
  HBASE_HOME=`cygpath -d "$HBASE_HOME"`
  HBASE_LOG_DIR=`cygpath -d "$HBASE_LOG_DIR"`
fi

if [ -d "${HBASE_HOME}/build/native" -o -d "${HBASE_HOME}/lib/native" ]; then
  if [ -z $JAVA_PLATFORM ]; then
    JAVA_PLATFORM=`CLASSPATH=${CLASSPATH} ${JAVA} org.apache.hadoop.util.PlatformName | sed -e "s/ /_/g"`
  fi
  if [ -d "$HBASE_HOME/build/native" ]; then
    JAVA_LIBRARY_PATH=$(append_path "$JAVA_LIBRARY_PATH" ${HBASE_HOME}/build/native/${JAVA_PLATFORM}/lib)
  fi

  if [ -d "${HBASE_HOME}/lib/native" ]; then
    JAVA_LIBRARY_PATH=$(append_path "$JAVA_LIBRARY_PATH" ${HBASE_HOME}/lib/native/${JAVA_PLATFORM})
  fi
fi

# cygwin path translation
if $cygwin; then
  JAVA_LIBRARY_PATH=`cygpath -p "$JAVA_LIBRARY_PATH"`
fi

# restore ordinary behaviour
unset IFS

#Set the right GC options based on the what we are running
declare -a server_cmds=("master" "regionserver" "thrift" "thrift2" "rest" "avro" "zookeeper")
for cmd in ${server_cmds[@]}; do
	if [[ $cmd == $COMMAND ]]; then
		server=true
		break
	fi
done

if [[ $server ]]; then
	HBASE_OPTS="$HBASE_OPTS $SERVER_GC_OPTS"
else
	HBASE_OPTS="$HBASE_OPTS $CLIENT_GC_OPTS"
fi

if [ "$AUTH_AS_SERVER" == "true" ] || [ "$COMMAND" = "hbck" ]; then
   if [ -n "$HBASE_SERVER_JAAS_OPTS" ]; then
     HBASE_OPTS="$HBASE_OPTS $HBASE_SERVER_JAAS_OPTS"
   else
     HBASE_OPTS="$HBASE_OPTS $HBASE_REGIONSERVER_OPTS"
   fi
fi

# for jruby
# (1) for the commands which need jruby (see jruby_cmds defined below)
#     A. when JRUBY_HOME is specified explicitly, eg. export JRUBY_HOME=/usr/local/share/jruby
#        CLASSPATH and HBASE_OPTS are updated according to JRUBY_HOME specified
#     B. when JRUBY_HOME is not specified explicitly
#        add jruby packaged with HBase to CLASSPATH
# (2) for other commands, do nothing

# check if the commmand needs jruby
declare -a jruby_cmds=("shell" "org.jruby.Main")
for cmd in "${jruby_cmds[@]}"; do
  if [[ $cmd == "$COMMAND" ]]; then
    jruby_needed=true
    break
  fi
done

# the command needs jruby
if [[ $jruby_needed ]]; then
  if [ "$JRUBY_HOME" != "" ]; then  # JRUBY_HOME is specified explicitly, eg. export JRUBY_HOME=/usr/local/share/jruby
    # add jruby.jar into CLASSPATH
    CLASSPATH="$JRUBY_HOME/lib/jruby.jar:$CLASSPATH"

    # add jruby to HBASE_OPTS
    HBASE_OPTS="$HBASE_OPTS -Djruby.home=$JRUBY_HOME -Djruby.lib=$JRUBY_HOME/lib"

  else  # JRUBY_HOME is not specified explicitly
    if $in_dev_env; then  # in dev environment
      F_JRUBY="${HBASE_HOME}/hbase-build-configuration/target/cached_classpath_jruby.txt"
      if [ ! -f "${F_JRUBY}" ]; then
        echo "As this is a development environment, we need ${F_JRUBY} to be generated from maven (command: mvn install -DskipTests)"
        exit 1
      fi
      CLASSPATH=$(cat "${F_JRUBY}"):$CLASSPATH;
    else  # not in dev environment
      # add jruby packaged with HBase to CLASSPATH
      JRUBY_PACKAGED_WITH_HBASE="$HBASE_HOME/lib/ruby/*.jar"
      for jruby_jar in $JRUBY_PACKAGED_WITH_HBASE; do
        CLASSPATH=$jruby_jar:$CLASSPATH;
      done
    fi
  fi
fi

# figure out which class to run
if [ "$COMMAND" = "shell" ] ; then
	#find the hbase ruby sources
  if [ -d "$HBASE_HOME/lib/ruby" ]; then
    HBASE_OPTS="$HBASE_OPTS -Dhbase.ruby.sources=$HBASE_HOME/lib/ruby"
  else
    HBASE_OPTS="$HBASE_OPTS -Dhbase.ruby.sources=$HBASE_HOME/hbase-shell/src/main/ruby"
  fi
  HBASE_OPTS="$HBASE_OPTS $HBASE_SHELL_OPTS"
  CLASS="org.jruby.Main -X+O ${JRUBY_OPTS} ${HBASE_HOME}/bin/hirb.rb"
elif [ "$COMMAND" = "hbck" ] ; then
  CLASS='org.apache.hadoop.hbase.util.HBaseFsck'
elif [ "$COMMAND" = "wal" ] ; then
  CLASS='org.apache.hadoop.hbase.wal.WALPrettyPrinter'
elif [ "$COMMAND" = "hfile" ] ; then
  CLASS='org.apache.hadoop.hbase.io.hfile.HFilePrettyPrinter'
elif [ "$COMMAND" = "zkcli" ] ; then
  CLASS="org.apache.hadoop.hbase.zookeeper.ZKMainServer"
elif [ "$COMMAND" = "backup" ] ; then
  CLASS='org.apache.hadoop.hbase.backup.BackupDriver'
elif [ "$COMMAND" = "restore" ] ; then
  CLASS='org.apache.hadoop.hbase.backup.RestoreDriver'
elif [ "$COMMAND" = "upgrade" ] ; then
  echo "This command was used to upgrade to HBase 0.96, it was removed in HBase 2.0.0."
  echo "Please follow the documentation at http://hbase.apache.org/book.html#upgrading."
  exit 1
elif [ "$COMMAND" = "snapshot" ] ; then
  SUBCOMMAND=$1
  shift
  if [ "$SUBCOMMAND" = "create" ] ; then
    CLASS="org.apache.hadoop.hbase.snapshot.CreateSnapshot"
  elif [ "$SUBCOMMAND" = "info" ] ; then
    CLASS="org.apache.hadoop.hbase.snapshot.SnapshotInfo"
  elif [ "$SUBCOMMAND" = "export" ] ; then
    CLASS="org.apache.hadoop.hbase.snapshot.ExportSnapshot"
  else
    echo "Usage: hbase [<options>] snapshot <subcommand> [<args>]"
    echo "$options_string"
    echo ""
    echo "Subcommands:"
    echo "  create          Create a new snapshot of a table"
    echo "  info            Tool for dumping snapshot information"
    echo "  export          Export an existing snapshot"
    exit 1
  fi
elif [ "$COMMAND" = "master" ] ; then
  CLASS='org.apache.hadoop.hbase.master.HMaster'
  if [ "$1" != "stop" ] && [ "$1" != "clear" ] ; then
    HBASE_OPTS="$HBASE_OPTS $HBASE_MASTER_OPTS"
  fi
elif [ "$COMMAND" = "regionserver" ] ; then
  CLASS='org.apache.hadoop.hbase.regionserver.HRegionServer'
  if [ "$1" != "stop" ] ; then
    HBASE_OPTS="$HBASE_OPTS $HBASE_REGIONSERVER_OPTS"
  fi
elif [ "$COMMAND" = "thrift" ] ; then
  CLASS='org.apache.hadoop.hbase.thrift.ThriftServer'
  if [ "$1" != "stop" ] ; then
    HBASE_OPTS="$HBASE_OPTS $HBASE_THRIFT_OPTS"
  fi
elif [ "$COMMAND" = "thrift2" ] ; then
  CLASS='org.apache.hadoop.hbase.thrift2.ThriftServer'
  if [ "$1" != "stop" ] ; then
    HBASE_OPTS="$HBASE_OPTS $HBASE_THRIFT_OPTS"
  fi
elif [ "$COMMAND" = "rest" ] ; then
  CLASS='org.apache.hadoop.hbase.rest.RESTServer'
  if [ "$1" != "stop" ] ; then
    HBASE_OPTS="$HBASE_OPTS $HBASE_REST_OPTS"
  fi
elif [ "$COMMAND" = "zookeeper" ] ; then
  CLASS='org.apache.hadoop.hbase.zookeeper.HQuorumPeer'
  if [ "$1" != "stop" ] ; then
    HBASE_OPTS="$HBASE_OPTS $HBASE_ZOOKEEPER_OPTS"
  fi
elif [ "$COMMAND" = "clean" ] ; then
  case $1 in
    --cleanZk|--cleanHdfs|--cleanAll)
      matches="yes" ;;
    *) ;;
  esac
  if [ $# -ne 1 -o "$matches" = "" ]; then
    echo "Usage: hbase clean (--cleanZk|--cleanHdfs|--cleanAll)"
    echo "Options: "
    echo "        --cleanZk   cleans hbase related data from zookeeper."
    echo "        --cleanHdfs cleans hbase related data from hdfs."
    echo "        --cleanAll  cleans hbase related data from both zookeeper and hdfs."
    exit 1;
  fi
  "$bin"/hbase-cleanup.sh --config ${HBASE_CONF_DIR} $@
  exit $?
elif [ "$COMMAND" = "mapredcp" ] ; then
  CLASS='org.apache.hadoop.hbase.util.MapreduceDependencyClasspathTool'
elif [ "$COMMAND" = "classpath" ] ; then
  echo $CLASSPATH
  exit 0
elif [ "$COMMAND" = "pe" ] ; then
  CLASS='org.apache.hadoop.hbase.PerformanceEvaluation'
  HBASE_OPTS="$HBASE_OPTS $HBASE_PE_OPTS"
elif [ "$COMMAND" = "ltt" ] ; then
  CLASS='org.apache.hadoop.hbase.util.LoadTestTool'
  HBASE_OPTS="$HBASE_OPTS $HBASE_LTT_OPTS"
elif [ "$COMMAND" = "canary" ] ; then
  CLASS='org.apache.hadoop.hbase.tool.Canary'
  HBASE_OPTS="$HBASE_OPTS $HBASE_CANARY_OPTS"
elif [ "$COMMAND" = "version" ] ; then
  CLASS='org.apache.hadoop.hbase.util.VersionInfo'
else
  CLASS=$COMMAND
fi

# Have JVM dump heap if we run out of memory.  Files will be 'launch directory'
# and are named like the following: java_pid21612.hprof. Apparently it doesn't
# 'cost' to have this flag enabled. Its a 1.6 flag only. See:
# http://blogs.sun.com/alanb/entry/outofmemoryerror_looks_a_bit_better
HBASE_OPTS="$HBASE_OPTS -Dhbase.log.dir=$HBASE_LOG_DIR"
HBASE_OPTS="$HBASE_OPTS -Dhbase.log.file=$HBASE_LOGFILE"
HBASE_OPTS="$HBASE_OPTS -Dhbase.home.dir=$HBASE_HOME"
HBASE_OPTS="$HBASE_OPTS -Dhbase.id.str=$HBASE_IDENT_STRING"
HBASE_OPTS="$HBASE_OPTS -Dhbase.root.logger=${HBASE_ROOT_LOGGER:-INFO,console}"
if [ "x$JAVA_LIBRARY_PATH" != "x" ]; then
  HBASE_OPTS="$HBASE_OPTS -Djava.library.path=$JAVA_LIBRARY_PATH"
  export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$JAVA_LIBRARY_PATH"
fi

# Enable security logging on the master and regionserver only
if [ "$COMMAND" = "master" ] || [ "$COMMAND" = "regionserver" ]; then
  HBASE_OPTS="$HBASE_OPTS -Dhbase.security.logger=${HBASE_SECURITY_LOGGER:-INFO,RFAS}"
else
  HBASE_OPTS="$HBASE_OPTS -Dhbase.security.logger=${HBASE_SECURITY_LOGGER:-INFO,NullAppender}"
fi

HEAP_SETTINGS="$JAVA_HEAP_MAX $JAVA_OFFHEAP_MAX"
# Exec unless HBASE_NOEXEC is set.
export CLASSPATH
# Netty is shaded in hbase. The shaded netty is pulled in with org.apache.hbase.thirdparty:hbase-shaded-netty.
# It has a .so in it. Shading requires rename of the .so and then passing a system property so netty finds the
# renamed .so and associates it w/ the relocated netty files.
# So we can find the relocated .so, we need to add a system property pointing at new location. Trick is from:
#  https://stackoverflow.com/questions/33825743/rename-files-inside-a-jar-using-some-maven-plugin
# See toward the end of this issue for how to pass config: https://github.com/netty/netty/issues/6665
#
NETTY_PROP="-Dorg.apache.hadoop.hbase.shaded.io.netty.packagePrefix=org.apache.hadoop.hbase.shaded."
if [ "${HBASE_NOEXEC}" != "" ]; then
  "$JAVA" -Dproc_$COMMAND "$NETTY_PROP" -XX:OnOutOfMemoryError="kill -9 %p" $HEAP_SETTINGS $HBASE_OPTS $CLASS "$@"
else
  exec "$JAVA" -Dproc_$COMMAND  "$NETTY_PROP" -XX:OnOutOfMemoryError="kill -9 %p" $HEAP_SETTINGS $HBASE_OPTS $CLASS "$@"
fi