#! /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_CONNECTOR_CLASSPATH_PREFIX Extra Java CLASSPATH entries that should be
#                    prefixed to the system classpath.
#
#   HBASE_CONNECTOR_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_CONNECTOR_LIBRARY_PATH  HBase additions to JAVA_LIBRARY_PATH for adding
#                    native libraries.
#
#   HBASE_CONNECTOR_OPTS       Extra Java runtime options.
#
#   HBASE_CONNECTOR_CONF_DIR   Alternate conf dir. Default is ${HBASE_CONNECTOR_HOME}/conf.
#
#   HBASE_CONNECTOR_ROOT_LOGGER The root appender. Default is INFO,console
#


bin=`dirname "$0"`
bin=`cd "$bin">/dev/null; pwd`

# This will set HBASE_CONNECTOR_HOME etc.
. "$bin"/hbase-connectors-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_CONNECTOR_HOME}/target" ]; then
  in_dev_env=true
fi

# Detect if we are in the omnibus tarball
in_omnibus_tarball="false"
if [ -f "${HBASE_CONNECTOR_HOME}/bin/hbase-connectors-daemon.sh" ]; then
  in_omnibus_tarball="true"
fi

# if no args specified, show usage
if [ $# = 0 ]; then
  echo "Usage: hbase-connectors [<options>] <command> [<args>]"
  echo ""
  echo "Commands:"

  if [ "${in_omnibus_tarball}" = "true" ]; then
    echo "  kafkaproxy      Run the HBase Kafka Proxy server"
    echo "  kafkaproxytest  Run the HBase Kafka Proxy sample kafka listener"
  fi

  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 "$HBASE_CONNECTOR_HOME/conf/hbase-connector-env-$COMMAND.sh" ]; then
  . "$HBASE_CONNECTOR_HOME/conf/hbase-connector-env-$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 "$HBASE_CONNECTOR_HEAPSIZE" ]]; then
    JAVA_HEAP_MAX="-Xmx$(add_size_suffix $HBASE_CONNECTOR_HEAPSIZE)"
fi

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

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

# CLASSPATH initially contains $HBASE_CONNECTOR_CONF_DIR
PASS_CLASSPATH="${HBASE_CONNECTOR_CONF_DIR}"

CLASSPATH=${PASS_CLASSPATH}:$JAVA_HOME/lib/tools.jar

HBASE_IN_PATH=$(which hbase 2>/dev/null)

if [ "$HBASE_IN_PATH" = "" ]; then
    echo "hbase command must be in the path.. aborting"
    exit 1
fi

# default log directory & file
if [ "$HBASE_CONNECTOR_LOG_DIR" = "" ]; then
  HBASE_CONNECTOR_LOG_DIR="$HBASE_CONNECTOR_HOME/logs"
fi
if [ "$HBASE_CONNECTOR_LOGFILE" = "" ]; then
  HBASE_CONNECTOR_LOGFILE='hbase-connector.log'
fi

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

JAVA_PLATFORM=""

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


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

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

# cygwin path translation
if $cygwin; then
  PASS_CLASSPATH=`cygpath -p -w "$PASS_CLASSPATH"`
  HBASE_CONNECTOR_HOME=`cygpath -d "$HBASE_CONNECTOR_HOME"`
  HBASE_CONNECTOR_LOG_DIR=`cygpath -d "$HBASE_CONNECTOR_LOG_DIR"`
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=("kafkaproxy")
for cmd in ${server_cmds[@]}; do
	if [[ $cmd == $COMMAND ]]; then
		server=true
		break
	fi
done

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

if [ "$AUTH_AS_SERVER" == "true" ]; then
   if [ -n "$HBASE_CONNECTOR_SERVER_JAAS_OPTS" ]; then
       HBASE_CONNECTOR_OPTS="$HBASE_CONNECTOR_OPTS $HBASE_CONNECTOR_SERVER_JAAS_OPTS"
   fi
fi


add_maven_deps_to_classpath() {
  f="${HBASE_CONNECTOR_HOME}/target/$1"

  if [ ! -f "${f}" ]; then
      echo "As this is a development environment, we need ${f} to be generated from maven (command: mvn install -DskipTests)"
      exit 1
  fi
  PASS_CLASSPATH=${PASS_CLASSPATH}:$(cat "${f}")
}


add_connector_jars_to_classpath() {
  connector_dir="${HBASE_CONNECTOR_HOME}/$1"

  if [ -d "${connector_dir}" ]; then
      for f in $connector_dir/*.jar; do
	  PASS_CLASSPATH="${PASS_CLASSPATH}:${f}"
      done
  fi
}


#Add the development env class path stuff
if $in_dev_env; then
  add_maven_deps_to_classpath "cached_classpath.txt"
fi

# figure out which class to run
if [ "$COMMAND" = "kafkaproxy" ] ; then
  CLASS='org.apache.hadoop.hbase.kafka.KafkaProxy'
  if [ "$1" != "stop" ] ; then
    HBASE_CONNECTOR_OPTS="$HBASE_CONNECTOR_OPTS $HBASE_KAFKA_OPTS"
  fi

  # add the kafka proxy jars
  add_connector_jars_to_classpath "hbase-kafka-proxy"

elif [ "$COMMAND" = "kafkaproxytest" ] ; then
  CLASS='org.apache.hadoop.hbase.kafka.DumpToStringListener'
  if [ "$1" != "stop" ] ; then
    HBASE_CONNECTOR_OPTS="$HBASE_CONNECTOR_OPTS $HBASE_KAFKA_TEST_OPTS"
  fi

  # add the kafka proxy jars
  add_connector_jars_to_classpath "hbase-kafka-proxy"

else
  CLASS=$COMMAND
fi

HBASE_CONNECTOR_OPTS="$HBASE_CONNECTOR_OPTS -Dhbase.connector.log.dir=$HBASE_CONNECTOR_LOG_DIR"
HBASE_CONNECTOR_OPTS="$HBASE_CONNECTOR_OPTS -Dhbase.connector.log.file=$HBASE_CONNECTOR_LOGFILE"
HBASE_CONNECTOR_OPTS="$HBASE_CONNECTOR_OPTS -Dhbase.connector.home.dir=$HBASE_CONNECTOR_HOME"
HBASE_CONNECTOR_OPTS="$HBASE_CONNECTOR_OPTS -Dhbase.connector.id.str=$HBASE_CONNECTOR_IDENT_STRING"
HBASE_CONNECTOR_OPTS="$HBASE_CONNECTOR_OPTS -Dhbase.connector.root.logger=${HBASE_CONNECTOR_ROOT_LOGGER:-INFO,console}"

if [ "x$JAVA_LIBRARY_PATH" != "x" ]; then
  HBASE_CONNECTOR_OPTS="$HBASE_CONNECTOR_OPTS -Djava.library.path=$JAVA_LIBRARY_PATH"
  export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$JAVA_LIBRARY_PATH"
fi

HEAP_SETTINGS="$JAVA_HEAP_MAX $JAVA_OFFHEAP_MAX"

# by now if we're running a command it means we need logging
for f in ${HBASE_CONNECTOR_HOME}/lib/client-facing-thirdparty/slf4j-*.jar; do
  if [ -f "${f}" ]; then
    PASS_CLASSPATH="${PASS_CLASSPATH}:${f}"
    break
  fi
done

CLASSPATH=$PASS_CLASSPATH:`$HBASE_IN_PATH classpath`

export CLASSPATH

if [ "${HBASE_CONNECTOR_NOEXEC}" != "" ]; then
  "$JAVA" -Dproc_$COMMAND -XX:OnOutOfMemoryError="kill -9 %p" $HEAP_SETTINGS $HBASE_CONNECTOR_OPTS $CLASS "$@"
else
  exec "$JAVA" -Dproc_$COMMAND -XX:OnOutOfMemoryError="kill -9 %p" $HEAP_SETTINGS $HBASE_CONNECTOR_OPTS $CLASS "$@"
fi