Add GreptimeDB Alpine service packaging

packaging/alpine/local/greptimedb/greptimedb.initd

@@ -0,0 +1,61 @@
+#!/sbin/openrc-run
+
+service_name="${RC_SVCNAME#greptimedb.}"
+description="GreptimeDB ${service_name} service"
+
+command="/usr/bin/greptime"
+command_user="${GREPTIMEDB_USER:-greptimedb}:${GREPTIMEDB_GROUP:-greptimedb}"
+command_background="yes"
+pidfile="/run/greptimedb/${RC_SVCNAME}.pid"
+output_log="${GREPTIMEDB_LOG:-/var/log/greptimedb/${RC_SVCNAME}.log}"
+error_log="${GREPTIMEDB_ERRLOG:-/var/log/greptimedb/${RC_SVCNAME}.log}"
+
+build_command_args() {
+	config_file="${GREPTIMEDB_CONFIG:-/etc/greptimedb/${service_name}.toml}"
+	log_dir="${GREPTIMEDB_LOG_DIR:-/var/log/greptimedb/${service_name}}"
+	data_home="${GREPTIMEDB_DATA_HOME:-/var/lib/greptimedb/${service_name}}"
+	wal_dir="${GREPTIMEDB_WAL_DIR:-/var/lib/greptimedb/${service_name}/wal}"
+
+	command_args="${GREPTIMEDB_GLOBAL_OPTS:-} ${service_name} start -c ${config_file} --log-dir ${log_dir}"
+
+	case "$service_name" in
+		datanode)
+			command_args="$command_args --data-home ${data_home} --wal-dir ${wal_dir}"
+			;;
+		metasrv|standalone)
+			command_args="$command_args --data-home ${data_home}"
+			;;
+	esac
+
+	command_args="$command_args ${GREPTIMEDB_OPTS:-}"
+}
+
+build_command_args
+
+depend() {
+	need net
+	case "$service_name" in
+		datanode|flownode|frontend)
+			after greptimedb.metasrv
+			;;
+	esac
+}
+
+start_pre() {
+	checkpath -d -m 0755 -o "${GREPTIMEDB_USER:-greptimedb}:${GREPTIMEDB_GROUP:-greptimedb}" \
+		/run/greptimedb \
+		/var/log/greptimedb \
+		/var/lib/greptimedb \
+		"$log_dir"
+
+	case "$service_name" in
+		datanode)
+			checkpath -d -m 0750 -o "${GREPTIMEDB_USER:-greptimedb}:${GREPTIMEDB_GROUP:-greptimedb}" \
+				"$data_home" "$wal_dir"
+			;;
+		metasrv|standalone)
+			checkpath -d -m 0750 -o "${GREPTIMEDB_USER:-greptimedb}:${GREPTIMEDB_GROUP:-greptimedb}" \
+				"$data_home"
+			;;
+	esac
+}