install/installer/rest_installer

#!/bin/bash

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#==========================================
#  Install REST server on a Trafodion cluster
#==========================================

function print_usage {
cat << EOF
This script will install/configure the Trafodion REST server.
While this script can be run manually, it is normally
executed from the Trafodion installer.

Usage: $(basename $0) [options]

Options:
    --help                    Print this message and exit.
    --rest_build <file>       Path to the REST build tar file.
    --rest_install_path <dir> Path to the install directory. (defaults to $MY_SQROOT)
EOF
}

# Default parameters
typeset REST_BUILD_FILE=""
typeset REST_INSTALL_PATH="$MY_SQROOT"

# Parse input parameters
while [[ $# -gt 0 ]]; do
    case "$1" in
        --rest_build)
            if [[ -z "$2" ]]; then
                echo "***ERROR: No value passed to param $1."
                print_usage
                exit -1
            fi
            REST_BUILD_FILE=$2
            shift
            ;;
        --rest_install_path)
            if [[ -z "$2" ]]; then
                echo "***ERROR: No value passed to param $1."
                print_usage
                exit -1
            fi
            REST_INSTALL_PATH=$2
            shift
            ;;
        --help)
            print_usage
            ;;
        *)
            print_usage
            exit -1
  esac
  shift
done

echo "***INFO: Start of REST Server install"

# Make sure required env vars have been set first
if [[ -z "$MY_SQROOT" ]]; then
    echo "***ERROR: environment variable MY_SQROOT has no value."
    exit -1
fi
if [[ -z "$NODE_LIST" ]]; then
    echo "***ERROR: environment variable NODE_LIST has no value."
    exit -1
fi

# create install directory
mkdir -p $REST_INSTALL_PATH
cd $REST_INSTALL_PATH

# untar REST build into install directory
echo "***INFO: untarring build file $REST_BUILD_FILE"
tar -xzf $REST_BUILD_FILE

# get the REST install directory name which is imbedded in the tar file
REST_DIR=$(tar -tf $REST_BUILD_FILE | grep --max-count=1 bin | sed -e "s@\(^.*\)/bin/@\1@")
REST_DIR=$REST_INSTALL_PATH/$REST_DIR

# set env var in sqenvcom.sh for DCS install directory
grep --invert-match "REST_INSTALL_DIR=" $MY_SQROOT/sqenvcom.sh > $MY_SQROOT/sqenvcom.temp
echo "export REST_INSTALL_DIR=$REST_DIR" >> $MY_SQROOT/sqenvcom.temp
mv $MY_SQROOT/sqenvcom.temp $MY_SQROOT/sqenvcom.sh

cd $REST_DIR/conf

echo "***INFO: modifying $REST_DIR/conf/rest-site.xml"
# get zookeeper quorum

if [ "$node_count" -ne "1" ]; then
   lineNumber=$(grep -n "zookeeper\.quorum" /etc/hbase/conf/hbase-site.xml | sed 's/\:.*//')
   lineNumber=$((lineNumber+1))

   ZOOKEEPER_NODES=`sed "$lineNumber!d" /etc/hbase/conf/hbase-site.xml | sed 's/\/value.*//' | sed 's/.*>//' | sed 's/.$//'`
else
   ZOOKEEPER_NODES=$(hostname -s)   
fi

# add zookeeper quorum property to end of configuration
rm rest-site.temp 2>/dev/null
cat rest-site.xml | sed -e "s@</configuration>@  <property>\n    <name>rest.zookeeper.quorum</name>\n    <value>$ZOOKEEPER_NODES</value>\n  </property>\n </configuration>@" > rest-site.temp
cp rest-site.temp rest-site.xml
rm rest-site.temp 2>/dev/null

echo "***INFO: End of REST Server install."