alternatives like script for hadoop

alternatives-hadoop.sh

#!/bin/sh

HOME_LIB_DIR=${HOME}/lib

# symlink list
HADOOP_SYMLINK=${HOME_LIB_DIR}/hadoop
HBASE_SYMLINK=${HOME_LIB_DIR}/hbase
ZOOKEEPER_SYMLINK=${HOME_LIB_DIR}/zookeeper
HIVE_SYMLINK=${HOME_LIB_DIR}/hive
PIG_SYMLINK=${HOME_LIB_DIR}/pig
HUE_SYMLINK=${HOME_LIB_DIR}/hue
HUE_PLUGINS_SYMLINK=${HOME_LIB_DIR}/hue-plugins.jar
MAHOUT_SYMLINK=${HOME_LIB_DIR}/mahout
FLUME_SYMLINK=${HOME_LIB_DIR}/flume
SYMLINK_LIST=(${HADOOP_SYMLINK} ${HBASE_SYMLINK} ${ZOOKEEPER_SYMLINK} ${HIVE_SYMLINK} ${PIG_SYMLINK} ${HUE_SYMLINK} ${HUE_PLUGINS_SYMLINK} ${MAHOUT_SYMLINK} ${FLUME_SYMLINK})

## version list
HADOOP_HOME_CDH2U1=${HOME_LIB_DIR}/hadoop-0.20.1+169.88 
HADOOP_HOME_CDH2U3=${HOME_LIB_DIR}/hadoop-0.20.1+169.127
HADOOP_HOME_CDH3U0=${HOME_LIB_DIR}/hadoop-0.20.2-cdh3u0
HADOOP_HOME_CDH3U1=${HOME_LIB_DIR}/hadoop-0.20.2-cdh3u1
HADOOP_HOME_CDH3U2=${HOME_LIB_DIR}/hadoop-0.20.2-cdh3u2
HADOOP_HOME_CDH3U3=${HOME_LIB_DIR}/hadoop-0.20.2-cdh3u3
HADOOP_HOME_CDH3U4=${HOME_LIB_DIR}/hadoop-0.20.2-cdh3u4
HADOOP_HOME_CDH3U5=${HOME_LIB_DIR}/hadoop-0.20.2-cdh3u5
HADOOP_HOME_CDH4B2=${HOME_LIB_DIR}/hadoop-0.23.1-cdh4.0.0b2
HADOOP_HOME_CDH4_0=${HOME_LIB_DIR}/hadoop-2.0.0-cdh4.0.0
HADOOP_HOME_CDH4_1=${HOME_LIB_DIR}/hadoop-2.0.0-cdh4.1.1
HADOOP_HOME_CDH4_2=${HOME_LIB_DIR}/hadoop-2.0.0-cdh4.2.0
HBASE_HOME_CDH3U0=${HOME_LIB_DIR}/hbase-0.90.1-cdh3u0
HBASE_HOME_CDH3U1=${HOME_LIB_DIR}/hbase-0.90.3-cdh3u1
HBASE_HOME_CDH3U2=${HOME_LIB_DIR}/hbase-0.90.4-cdh3u2
HBASE_HOME_CDH3U3=${HOME_LIB_DIR}/hbase-0.90.4-cdh3u3
HBASE_HOME_CDH3U4=${HOME_LIB_DIR}/hbase-0.90.6-cdh3u4
ZOOKEEPER_HOME_CDH3U0=${HOME_LIB_DIR}/zookeeper-3.3.3-cdh3u0
ZOOKEEPER_HOME_CDH3U1=${HOME_LIB_DIR}/zookeeper-3.3.3-cdh3u1
ZOOKEEPER_HOME_CDH3U2=${HOME_LIB_DIR}/zookeeper-3.3.3-cdh3u2
ZOOKEEPER_HOME_CDH3U3=${HOME_LIB_DIR}/zookeeper-3.3.4-cdh3u3
ZOOKEEPER_HOME_CDH3U4=${HOME_LIB_DIR}/zookeeper-3.3.5-cdh3u4
HIVE_HOME_CDH3U0=${HOME_LIB_DIR}/hive-0.7.0-cdh3u0
HIVE_HOME_CDH3U1=${HOME_LIB_DIR}/hive-0.7.1-cdh3u1
HIVE_HOME_CDH3U2=${HOME_LIB_DIR}/hive-0.7.1-cdh3u2
HIVE_HOME_CDH3U3=${HOME_LIB_DIR}/hive-0.7.1-cdh3u3
HIVE_HOME_CDH3U4=${HOME_LIB_DIR}/hive-0.7.1-cdh3u4
HIVE_HOME_CDH3U5=${HOME_LIB_DIR}/hive-0.7.1-cdh3u5
HIVE_HOME_CDH4B2=${HOME_LIB_DIR}/hive-0.8.1-cdh4.0.0b2
HIVE_HOME_CDH4_0=${HOME_LIB_DIR}/hive-0.8.1-cdh4.0.1
HIVE_HOME_CDH4_2=${HOME_LIB_DIR}/hive-0.10.0-cdh4.2.0
PIG_HOME_CDH3U3=${HOME_LIB_DIR}/pig-0.8.1-cdh3u3
HUE_HOME_CDH3U2=${HOME_LIB_DIR}/hue-1.2.0.0-cdh3u2
HUE_HOME_CDH3U3=${HOME_LIB_DIR}/hue-1.2.0.0-cdh3u3
HUE_PLUGINS_CDH3U2=${HUE_HOME_CDH3U2}/desktop/libs/hadoop/java-lib/hue-plugins-1.2.0-cdh3u2.jar
HUE_PLUGINS_CDH3U3=${HUE_HOME_CDH3U3}/desktop/libs/hadoop/java-lib/hue-plugins-1.2.0-cdh3u3.jar
MAHOUT_HOME_CDH3U4=${HOME_LIB_DIR}/mahout-0.5-cdh3u4
FLUME_HOME_CDH4_1=${HOME_LIB_DIR}/apache-flume-1.2.0-cdh4.1.3

usage(){
    printf "%s:\n" "usage" 1>&2
    printf "%s [component] [cdh-version] -prod\n" `basename $0` 1>&2
# please add new component here
    printf "  %-15s: hadoop, hbase, zookeeper, hive, hue(>= CDH3u2), pig(>= CDH3u3), mahout(>= CDH3u4) flume(>= 4.1)\n"  "component" 1>&2
# please add new version here
    printf "  %-15s: CDH2u1/CDH2u3(hadoop only), CDH3u[0-5], CDH4b2, CDH4.[0-2]\n"  "cdh-version" 1>&2
    printf "%s -l\n" `basename $0` 1>&2
    printf "  list current settings\n"  1>&2
}

# please add new version here
version_selection(){
    case "${CDH_VERSION}" in
	"CDH2u1")
	    cdh_ver=\$${CDH_HOME}_CDH2U1
	    ;;
	"CDH2u3")
	    cdh_ver=\$${CDH_HOME}_CDH2U3
	    ;;
	"CDH3u0")
	    cdh_ver=\$${CDH_HOME}_CDH3U0
	    ;;
	"CDH3u1")
	    cdh_ver=\$${CDH_HOME}_CDH3U1
	    ;;
	"CDH3u2")
	    cdh_ver=\$${CDH_HOME}_CDH3U2
	    ;;
	"CDH3u3")
	    cdh_ver=\$${CDH_HOME}_CDH3U3
	    ;;
	"CDH3u4")
	    cdh_ver=\$${CDH_HOME}_CDH3U4
	    ;;
	"CDH3u5")
	    cdh_ver=\$${CDH_HOME}_CDH3U5
	    ;;
	"CDH4b2")
	    cdh_ver=\$${CDH_HOME}_CDH4B2
	    ;;
	"CDH4.0")
	    cdh_ver=\$${CDH_HOME}_CDH4_0
	    ;;
	"CDH4.1")
	    cdh_ver=\$${CDH_HOME}_CDH4_1
	    ;;
	"CDH4.2")
	    cdh_ver=\$${CDH_HOME}_CDH4_2
	    ;;
	*)
	    usage
	    exit
    esac
}

# please add new component here
component_selection(){
    case "${COMPONENT}" in
	"hadoop")
	    CDH_ALTERNATIVE_COMMAND=hadoop_alternative
	    CDH_HOME="HADOOP_HOME"
	    ;;
	"hbase")
	    CDH_ALTERNATIVE_COMMAND=hbase_alternative
	    CDH_HOME="HBASE_HOME"
	    ;;
	"zookeeper")
	    CDH_ALTERNATIVE_COMMAND=zookeeper_alternative
	    CDH_HOME="ZOOKEEPER_HOME"
	    ;;
	"hive")
	    CDH_ALTERNATIVE_COMMAND=hive_alternative
	    CDH_HOME="HIVE_HOME"
	    ;;
	"pig")
	    CDH_ALTERNATIVE_COMMAND=pig_alternative
	    CDH_HOME="PIG_HOME"
	    ;;
	"hue")
	    CDH_ALTERNATIVE_COMMAND=hue_alternative
	    CDH_HOME="HUE_HOME"
	    ;;
	"mahout")
	    CDH_ALTERNATIVE_COMMAND=mahout_alternative
	    CDH_HOME="MAHOUT_HOME"
	    ;;
	"flume")
	    CDH_ALTERNATIVE_COMMAND=flume_alternative
	    CDH_HOME="FLUME_HOME"
	    ;;
	*)
	    usage
	    exit
    esac
}

alternative_list(){
    echo "alternative_list()"
    for link in ${SYMLINK_LIST[@]}; do
	ls -lGd ${link}
    done
}

hadoop_alternative(){
    echo "hadoop_alternative()"
    rm ${HADOOP_SYMLINK}
    ln -s $1 ${HADOOP_SYMLINK}
}

hadoop_alternative_dryrun(){
    echo "hadoop_alternative()"
    echo "rm ${HADOOP_SYMLINK}"
    echo "ln -s $1 ${HADOOP_SYMLINK}"
}

hbase_alternative(){
    echo "hbase_alternative()"
    rm ${HBASE_SYMLINK}
    ln -s $1 ${HBASE_SYMLINK}
}

hbase_alternative_dryrun(){
    echo "hbase_alternative()"
    echo "rm ${HBASE_SYMLINK}"
    echo "ln -s $1 ${HBASE_SYMLINK}"
}

zookeeper_alternative(){
    echo "zookeeper_alternative()"
    rm ${ZOOKEEPER_SYMLINK}
    ln -s $1 ${ZOOKEEPER_SYMLINK}
}

zookeeper_alternative_dryrun(){
    echo "zookeeper_alternative()"
    echo "rm ${ZOOKEEPER_SYMLINK}"
    echo "ln -s $1 ${ZOOKEEPER_SYMLINK}"
}

hive_alternative(){
    echo "hive_alternative()"
    rm ${HIVE_SYMLINK}
    ln -s $1 ${HIVE_SYMLINK}
}

hive_alternative_dryrun(){
    echo "hive_alternative()"
    echo "rm ${HIVE_SYMLINK}"
    echo "ln -s $1 ${HIVE_SYMLINK}"
}

pig_alternative(){
    echo "pig_alternative()"
    rm ${PIG_SYMLINK}
    ln -s $1 ${PIG_SYMLINK}
}

pig_alternative_dryrun(){
    echo "pig_alternative()"
    echo "rm ${PIG_SYMLINK}"
    echo "ln -s $1 ${PIG_SYMLINK}"
}

hue_alternative(){
    echo "hue_alternative()"

    case "${CDH_VERSION}" in
	"CDH3u2")	
	    rm ${HUE_PLUGINS_SYMLINK}
	    ln -s ${HUE_PLUGINS_CDH3U2} ${HUE_PLUGINS_SYMLINK}
	    ;;
	"CDH3u3")
	    rm ${HUE_PLUGINS_SYMLINK}
	    ln -s ${HUE_PLUGINS_CDH3U3} ${HUE_PLUGINS_SYMLINK}
	    ;;
	*)
	    printf "ERROR: invalid version: %s\n" ${CDH_VERSION} 1>&2
	    exit
    esac
    
    rm ${HUE_SYMLINK}
    ln -s $1 ${HUE_SYMLINK}
}

hue_alternative_dryrun(){
    echo "hue_alternative()"

    case "${CDH_VERSION}" in
	"CDH3u2")	
	    echo "rm ${HUE_PLUGINS_SYMLINK}"
	    echo "ln -s ${HUE_PLUGINS_CDH3U2} ${HUE_PLUGINS_SYMLINK}"
	    ;;
	"CDH3u3")
	    echo "rm ${HUE_PLUGINS_SYMLINK}"
	    echo "ln -s ${HUE_PLUGINS_CDH3U3} ${HUE_PLUGINS_SYMLINK}"
	    ;;
	*)
	    printf "ERROR: invalid version: %s\n" ${CDH_VERSION} 1>&2
	    exit
    esac

    echo "rm ${HUE_SYMLINK}"
    echo "ln -s $1 ${HUE_SYMLINK}"
}

mahout_alternative(){
    echo "mahout_alternative()"
    rm ${MAHOUT_SYMLINK}
    ln -s $1 ${MAHOUT_SYMLINK}
}

mahout_alternative_dryrun(){
    echo "mahout_alternative()"
    echo "rm ${MAHOUT_SYMLINK}"
    echo "ln -s $1 ${MAHOUT_SYMLINK}"
}

flume_alternative(){
    echo "flume_alternative()"
    rm ${FLUME_SYMLINK}
    ln -s $1 ${FLUME_SYMLINK}
}

flume_alternative_dryrun(){
    echo "flume_alternative()"
    echo "rm ${FLUME_SYMLINK}"
    echo "ln -s $1 ${FLUME_SYMLINK}"
}



if [ $# == 1 -a "$1" == "-l" ]; then
    alternative_list
    exit
fi

if [ $# == 3 ]; then
    DRYRUN=0
elif [ $# == 2 ]; then
    DRYRUN=1
else
    usage
    exit
fi

COMPONENT=$1
CDH_VERSION=$2

component_selection

if [ "${DRYRUN}" == 1 ]; then
    CDH_ALTERNATIVE_COMMAND=${CDH_ALTERNATIVE_COMMAND}_dryrun
fi
	
version_selection

${CDH_ALTERNATIVE_COMMAND} `eval echo $"$cdh_ver"`