ttstart

#!/bin/bash
# 
# Author: chris.jenkins@oracle.com
# 
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
# 
# LICENSE UPL 1.0
#
# Copyright (c) 2022 Oracle and/or its affiliates.
# 
# Script to start the TimesTenm container.
# 

declare -r cfgfilename="container.cfg"
declare -r dflt_imagename="ttimage"
declare -r dflt_containername="ttcontainer"
declare -r dflt_hostname="tthost"
declare -r dflt_nwname="ttnw"
declare -r dflt_v4address="10.150.0.10"
declare -r dflt_v6address="2022:1:1:150::10"
declare -r mincsport=1025
declare -r maxcsport=65535
declare -r dfltcsport=6625
declare -r ttmount="/ttdb"
declare -r chkintvl=5
declare -r maxchecks=20
declare -r ftemplate="ttcontainer_start_XXXXX"
export TMPDIR=/tmp

declare basedir
declare cfgfile
declare tmpf
declare pubport
declare tmp
declare -i network=1
declare -i csport=0
declare -i ret=0

usage()
{
    echo
    echo "Usage:"
    echo
    echo "    ttstart [--network] [--csport [<portno>]]"
    echo
    echo "--network"
    echo "    Attaches the container to the custom docker network. If not specified the"
    echo "    container uses the default docker network."
    echo
    echo "--csport [<portno>]"
    echo "    Maps the TimesTen client-server access port to a localhost port on"
    echo "    the host. By default the host port used is ${dfltcsport} but this can be"
    echo "    overridden by specifying an alternate port (${mincsport} <= portno <= ${maxcsport})."
    echo "    A TimesTen client can then connect to TimesTen in the container via"
    echo "    this port on the host."
    echo
    exit 100
}

isnumeric()
{
    local n=0
    local tmp

    if [[ $# -ne 1 ]]
    then
        return 1
    fi
    tmp=$(echo "$1" | sed -e 's/^0*//')
    if [[ "${tmp}" == "" ]]
    then
        return 0
    fi
    n=$(expr "${tmp}" + 0 2>/dev/null)
    if [[ $? -ne 0 ]] || [[ "${n}" != "${tmp}" ]]
    then
        return 1
    else
        return 0
    fi
}

doWait()
{
    local res
    local -i nchecks=0

    sleep ${chkintvl}
    while [[ ${nchecks} -lt ${maxchecks} ]]
    do
        res=$(docker logs "${DOCKER_TTCONTAINER}" 2>/dev/null | grep -e "info: TT[IS][NT][IA][TR]" | tail -n 1)
        if [[ "${res}" == "info: TTSTART complete" ]]
        then
            return 0
        elif [[ "${res}" =~ "info: TTSTART exit " ]] || [[ "${res}" =~ "info: TTINIT exit " ]]
        then
            return 1
        fi
        sleep ${chkintvl}
        nchecks=${nchecks}+1
        if ! docker ps 2>/dev/null | grep -q "${DOCKER_TTCONTAINER}"
        then
            return 1
        fi
    done

    return 2
}

loadConfig()
{
    local cfile

    if [[ $# -ne 1 ]]
    then
        return 1
    fi
    cfile="$1"

    if ! source "${cfile}" >& /dev/null
    then
        echo
        echo "error: unable to load configuration from '${cfile}'"
        echo
        return 1
    fi
    if [[ "${DOCKER_VOLUME}" == "" ]]
    then
        echo
        echo "error: mandatory parameter DOCKER_VOLUME not defined in '${cfile}'"
        echo
        return 1
    fi
    if [[ "${DOCKER_TTIMAGE}" == "" ]]
    then
        export DOCKER_TTIMAGE="${dflt_imagename}"
    fi
    if [[ "${DOCKER_TTCONTAINER}" == "" ]]
    then
        export DOCKER_TTCONTAINER="${dflt_containername}"
    fi
    if [[ "${DOCKER_TTHOSTNAME}" == "" ]]
    then
        export DOCKER_TTHOSTNAME="${dflt_hostname}"
    fi
    if [[ "${DOCKER_NETWORK}" == "" ]]
    then
        export DOCKER_NETWORK="${dflt_nwname}"
    fi
    if [[ "${DOCKER_V4ADDRESS}" == "" ]]
    then
        export DOCKER_V4ADDRESS="${dflt_v4address}"
    fi
    if [[ "${DOCKER_V6ADDRESS}" == "" ]]
    then
        export DOCKER_V6ADDRESS="${dflt_v6address}"
    fi

    return 0
}

while [[ $# -gt 0 ]]
do
    case "$1" in
        "--network")
            if [[ ${network} -eq 0 ]]
            then
                usage
            fi
            network=0
            ;;
        "--csport")
            if [[ ${csport} -gt 0 ]]
            then
                usage
            fi
            if [[ $# -lt 2 ]]
            then
                csport=${dfltcsport}
            else
                tmp="$2"
                if [[ "${tmp:0:2}" != "--" ]] && isnumeric "${tmp}"
                then
                    shift
                    csport=${tmp}
                    if [[ ${csport} -lt ${mincsport} ]] || [[ ${csport} -gt ${maxcsport} ]]
                    then
                        echo >&2 "error: invalid value (${csport}) for --csport"
                        exit 5
                    fi
                fi
            fi
            ;;
        *)
            usage
            ;;
    esac
    shift
done

basedir=$(dirname "$0")
cfgfile="${basedir}/${cfgfilename}"
if ! loadConfig "${cfgfile}"
then
    exit 1
fi

if docker ps 2>/dev/null | grep -q "${DOCKER_TTCONTAINER}"
then
    exit 0
fi

if ! tmpf=$(mktemp -q -t "${ftemplate}")
then
    echo >&2 "error: unable to create a temporary file"
    exit 2
fi

docker container rm "${DOCKER_TTCONTAINER}" >& "${tmpf}"

if [[ ${csport} -gt 0 ]]
then
    pubport="-p ${csport}:${dfltcsport}"
fi

if [[ ${network} -eq 0 ]]
then
    if ! docker run --detach ${pubport} --name="${DOCKER_TTCONTAINER}" --hostname="${DOCKER_TTHOSTNAME}" \
                    --network="${DOCKER_NETWORK}" --ip="${DOCKER_V4ADDRESS}" --ip6="${DOCKER_V6ADDRESS}" \
                    --mount type=volume,src="${DOCKER_VOLUME}",dst="${ttmount}" \
                    "${DOCKER_TTIMAGE}" >> "${tmpf}" 2>&1
    then
        ret=3
    fi
else
    if ! docker run --detach ${pubport} --name="${DOCKER_TTCONTAINER}" --hostname="${DOCKER_TTHOSTNAME}" \
                    --mount type=volume,src="${DOCKER_VOLUME}",dst="${ttmount}" \
                    "${DOCKER_TTIMAGE}" >> "${tmpf}" 2>&1
    then
        ret=3
    fi
fi
if [[ ${ret} -eq 0 ]]
then
    if ! doWait
    then
        ret=4
    fi
fi

if [[ ${ret} -ne 0 ]]
then
    cat "${tmpf}"
    docker logs "${DOCKER_TTCONTAINER}"
fi

rm -f "${tmpf}" >& /dev/null

exit ${ret}