| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| package org.apache.iotdb.commons; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public abstract class ServerCommandLine { |
| private static final Logger LOG = LoggerFactory.getLogger(ServerCommandLine.class); |
| |
| /** |
| * Implementing subclasses should return a usage string to print out |
| * |
| * @return usage |
| */ |
| protected abstract String getUsage(); |
| |
| /** |
| * run command |
| * |
| * @param args system args |
| * @return return 0 if exec success |
| */ |
| protected abstract int run(String[] args) throws Exception; |
| |
| protected void usage(String message) { |
| if (message != null) { |
| System.err.println(message); |
| System.err.println(); |
| } |
| |
| System.err.println(getUsage()); |
| } |
| |
| /** |
| * Parse and run the given command line. |
| * |
| * @param args system args |
| */ |
| public void doMain(String[] args) { |
| try { |
| int result = run(args); |
| if (result != 0) { |
| System.exit(result); |
| } |
| } catch (Exception e) { |
| LOG.error("Failed to execute system command", e); |
| System.exit(-1); |
| } |
| } |
| } |