#! /bin/sh

# Required arguments.
logname=$1; [ -n "$1" ] && shift
role=$1; [ -n "$1" ] && shift
nodename=$1; [ -n "$1" ] && shift

# Optional arguments.
database=$CATLFISH_DB_DIR
erlbase=$ERLANG_BASE_DIR

# Use some reasonable default values.
[ -z "$database" ] && database=/var/db/catlfish-merge
[ -z "$erlbase" ] && erlbase=/usr/local/catlfish

# FIXME: Get compileconfig.py from the
# $erlbase/lib/catlfish-$VERSION.ez (zip archive) instead of requiring
# source code to be unpacked in the container.
COMPILECONFIG=/usr/local/src/catlfish/tools/compileconfig.py

case $role in
    frontend|storage|signing)
        if ! [ -f ${nodename}.config ]; then
            $COMPILECONFIG --config ${logname}.cfg \
                           --localconfig ${nodename}.cfg;
        fi
        $erlbase/bin/run_erl \
            /var/run/catlfish/ \
            /var/run/catlfish/erlang_log/ \
            "exec $erlbase/bin/erl -config $nodename"
        ;;

    merge)
        # Catlfish and plop versions are included in filename of
        # archive file and in the filename within the
        # archive. Example: lib/catlfish-0.6.0.ez contains
        # catlfish-0.6.0.
        ver=$(ls $erlbase/lib/catlfish-*.ez | sed 's/.*catlfish-\(.*\)\.ez/\1/1')
        ERL_LIBS=$erlbase/lib/catlfish-${ver}.ez/catlfish-${ver}
        ver=$(ls $erlbase/lib/plop-*.ez | sed 's/.*plop-\(.*\)\.ez/\1/1')
        ERL_LIBS=$ERL_LIBS:$erlbase/lib/plop-${ver}.ez/plop-${ver}/ebin
        ERL_LIBS=$ERL_LIBS:$erlbase/lib/lager-2.1.1.ez/lager-2.1.1
        export ERL_LIBS

        export MERGE_INTERVAL_FIRST=60
        export MERGE_INTERVAL_FREQ=3600
        export MERGE_DB_DIR=$database

        $erlbase/merge.sh $logname $nodename \
                          > merge_log/stdout \
                          2> merge_log/stderr
        ;;
    *)
        echo "catlfish: unknown role: $role"
        ;;
esac