couchbase-server.sh.in

#! /bin/bash
#
# Copyright (c) 2010-2011, Couchbase, Inc.
# All rights reserved
#
# Licensed 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.

SOFTWARE_VERSION="@PRODUCT_VERSION@"
if [ x"${SOFTWARE_VERSION}" = "x" ]
then
   SOFTWARE_VERSION="unsupported developer build"
fi

ENTERPRISE=`echo @BUILD_ENTERPRISE@ | tr '[:upper:]' '[:lower:]'`

if [ x"${ENTERPRISE}" = "xtrue" ]
then
   SOFTWARE_VERSION="${SOFTWARE_VERSION} (EE)"
else
   SOFTWARE_VERSION="${SOFTWARE_VERSION} (CE)"
fi

PATH="@PREFIX@/bin":$PATH
export PATH

ERL_LIBS="@PREFIX@/lib/ns_server/erlang/lib:@PREFIX@/lib/couchdb/erlang/lib:@PREFIX@/lib/couchdb/plugins"
export ERL_LIBS

DEFAULT_CONFIG_DIR="@PREFIX@/etc/couchdb/default.d"
DEFAULT_CONFIG_FILE="@PREFIX@/etc/couchdb/default.ini"
LOCAL_CONFIG_DIR="@PREFIX@/etc/couchdb/local.d"
LOCAL_CONFIG_FILE="@PREFIX@/etc/couchdb/local.ini"

PIDFILE="@PREFIX@/var/lib/couchbase/couchbase-server.pid"
COOKIEFILE="@PREFIX@/var/lib/couchbase/couchbase-server.cookie"

couch_start_arguments=""

LD_LIBRARY_PATH="@PREFIX@/lib":"@PREFIX@/lib/memcached":$LD_LIBRARY_PATH
export LD_LIBRARY_PATH

ERL_CRASH_DUMP_BASE=erl_crash.dump.$(date +%s).$$
ERL_CRASH_DUMP=$ERL_CRASH_DUMP_BASE.babysitter
export ERL_CRASH_DUMP_BASE
export ERL_CRASH_DUMP

ERL_FULLSWEEP_AFTER=512
export ERL_FULLSWEEP_AFTER

# For some obscure reason erl requires HOME environment variable to be set.
if [ -z "$HOME" ]
then
    export HOME=/tmp
fi

_check_nofile () {
    if [ `ulimit -n` -lt 40960 ]
    then
        cat <<EOF

The maximum number of open files for the couchbase user is set too low.
It must be at least 40960. Normally this can be increased by adding
the following lines to /etc/security/limits.conf:

couchbase              soft    nofile                  <value>
couchbase              hard    nofile                  <value>

Where <value> is greater than 40960. The procedure may be totally
different if you're running so called "non-root/non-sudo install" or
if you've built Couchbase Server from source.

EOF
    fi
}

_prepare_datadir () {
    datadir="@PREFIX@/var/lib/couchbase"

    test -d "$datadir" || mkdir -p "$datadir"
    cd "$datadir"
}

_maybe_start_epmd () {
    # Initialize distributed erlang on the system (i.e. epmd)
    erl -noshell -setcookie nocookie -sname init -run init stop 2>&1 > /dev/null
    if [ $? -ne 0 ]
    then
        exit 1
    fi
}

_add_config_file () {
    couch_start_arguments="$couch_start_arguments $1"
}

_add_config_dir () {
    for file in "$1"/*.ini; do
        if [ -r "$file" ]; then
          _add_config_file "$file"
        fi
    done
}

_load_config () {
    _add_config_file "$DEFAULT_CONFIG_FILE"
    _add_config_dir "$DEFAULT_CONFIG_DIR"
    _add_config_file "$LOCAL_CONFIG_FILE"
    _add_config_dir "$LOCAL_CONFIG_DIR"
    if [ "$COUCHDB_ADDITIONAL_CONFIG_FILE" != '' ]
    then
        _add_config_file "$COUCHDB_ADDITIONAL_CONFIG_FILE"
    fi
}

_drop_old_crashdumps () {
    KEEP="`ls -1 erl_crash.dump.* 2>/dev/null | sort | tail -n 10`"
    for file in erl_crash.dump.*; do
        if [[ "$KEEP" != *$file* ]]; then
            rm -f $file
        fi
    done
}


_start() {
    _check_nofile
    _prepare_datadir
    _maybe_start_epmd
    _load_config

    # note: we depend on pwd being $datadir from _prepare_datadir
    _drop_old_crashdumps

    umask 007

    exec erl \
        +A 16 \
        -smp enable \
        -kernel inet_dist_listen_min 21100 inet_dist_listen_max 21299 \
                error_logger false \
        -sasl sasl_error_logger false \
        -hidden \
        -name 'babysitter_of_ns_1@127.0.0.1' \
        -setcookie nocookie \
        $* \
        -run ns_babysitter_bootstrap -- \
        -couch_ini $couch_start_arguments \
        -ns_babysitter cookiefile "\"$COOKIEFILE\"" \
        -ns_server config_path "\"@PREFIX@/etc/couchbase/static_config\"" \
        -ns_server pidfile "\"$PIDFILE\"" \
        -ns_server cookiefile "\"$COOKIEFILE-ns-server\"" \
        -ns_server enable_mlockall ${COUCHBASE_ENABLE_MLOCKALL:-false}
}

_stop() {
    [ -f $COOKIEFILE ] || return 1

    cookie=`cat "$COOKIEFILE"`

    erl \
        -name executioner@executioner \
        -noshell \
        -hidden \
        -setcookie "$cookie" \
        -eval "ns_babysitter_bootstrap:remote_stop('babysitter_of_ns_1@127.0.0.1')"

    errcode=$?

    if [ $errcode -eq 0 ]; then
        rm "$COOKIEFILE"

        epmd -kill >/dev/null
    fi

    return $errcode
}

usage() {
cat <<EOF
couchbase-server is a script to start/stop the Couchbase server.

Usage: $0 [options]

  Special options:
     --help, -h     Print this help text
     --version, -v  Print software Version
     -k             Stop couchbase Server

All other options and arguments will be passed to the Couchbase
server and should NOT be used unless you know what you're doing.

EOF
}

_parse_options () {
    # the getopt lack support for longopts..
    if [ "$1" == "--version" ]
    then
       echo "Couchbase Server ${SOFTWARE_VERSION}"
       exit 0
    fi

    if [ "$1" == "--help" ]
    then
       usage
       exit 0
    fi

    # set +e
    while getopts "kvh" opt
    do
       case $opt in
       k)
         _stop
	 exit $?
         ;;
       v)
         echo "Couchbase Server ${SOFTWARE_VERSION}"
         exit 0
         ;;
       h)
         usage
         exit 0
         ;;
       *)
         break
         ;;
       esac
    done

    _start $*
}

_parse_options $*