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#!/bin/bash
export TERM=xterm
pid=0

function check_environment {
    if [ ! -v CONTAINER_TYPE ]; then
        CONTAINER_TYPE="unknown"
        export CONTAINER_TYPE
        echo "! WARNING : environment var CONTAINER_TYPE is missing..."
        echo "! WARNING : auto-assigned value : $CONTAINER_TYPE"
    fi
    if [ ! -v CONTAINER_SERVICE ]; then
        CONTAINER_SERVICE=$CONTAINER_TYPE;
        export CONTAINER_SERVICE;
        echo "! WARNING : environment var CONTAINER_SERVICE is missing..."
        echo "! WARNING : auto-assigned value : $CONTAINER_SERVICE"
    fi
    if [ ! -v CONTAINER_INSTANCE ]; then
        CONTAINER_INSTANCE=$CONTAINER_TYPE "_" $CONTAINER_SERVICE;
        export CONTAINER_INSTANCE;
        echo "! WARNING : environment var CONTAINER_INSTANCE is missing..."
        echo "! WARNING : auto-assigned value : $CONTAINER_INSTANCE"
    fi
}

function display_container_header {
    echo "+====================================================="
    echo "| Container   : $HOSTNAME"
    echo "| OS          : $(</etc/redhat-release)"
    if [ -v CONTAINER_TYPE ]; then
        echo "| Type        : $CONTAINER_TYPE"
    fi
    if [ -v CONTAINER_SERVICE ]; then
        echo "| Service     : $CONTAINER_SERVICE"
    fi
    if [ -v CONTAINER_INSTANCE ]; then
        echo "| Instance    : $CONTAINER_INSTANCE"
    fi
    echo "+====================================================="
}

function start_service {
    if [ ! -v TEST_DURATION ]; then
        TEST_DURATION=10;
        export TEST_DURATION;
    fi
    if echo $TEST_DURATION | egrep -q '^[0-9]+$'; then
        echo "" > /dev/null &
    else
        TEST_DURATION=10;
    fi
    echo "+====================================================="
    echo "| Container $HOSTNAME is now bombing CPU for $TEST_DURATION sec"
    echo "+====================================================="
    /bin/bomb > /dev/null &
    TASK_PID=$!
    sleep $TEST_DURATION
    kill $TASK_PID
    exit 0
}


check_environment
display_container_header
start_service