001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.geronimo.cli;
018
019 import java.io.PrintStream;
020
021 import org.apache.geronimo.cli.CLParserException;
022 import org.apache.geronimo.kernel.log.GeronimoLogging;
023 import org.apache.geronimo.kernel.util.MainConfigurationBootstrapper;
024
025
026 /**
027 * @version $Rev: 476049 $ $Date: 2006-11-17 15:35:17 +1100 (Fri, 17 Nov 2006) $
028 */
029 public abstract class AbstractCLI {
030
031 private final String[] args;
032 private final PrintStream errStream;
033
034 protected AbstractCLI(String[] args, PrintStream errStream) {
035 if (null == args) {
036 throw new IllegalArgumentException("args is required");
037 } else if (null == errStream) {
038 throw new IllegalArgumentException("errStream is required");
039 }
040 this.args = args;
041 this.errStream = errStream;
042 }
043
044 public int executeMain() {
045 CLParser parser = getCLParser();
046 try {
047 parser.parse(args);
048 } catch (CLParserException e) {
049 errStream.println(e.getMessage());
050 parser.displayHelp();
051 return 1;
052 }
053
054 if (parser.isHelp()) {
055 parser.displayHelp();
056 return 0;
057 }
058
059 boolean executed = executeCommand(parser);
060 if (executed) {
061 return 0;
062 }
063
064 initializeLogging(parser);
065
066 MainConfigurationBootstrapper mainConfigurationBootstrapper = newMainConfigurationBootstrapper();
067 return MainConfigurationBootstrapper.main(mainConfigurationBootstrapper, parser);
068 }
069
070 protected boolean executeCommand(CLParser parser) {
071 return false;
072 }
073
074 protected void initializeLogging(CLParser parser) {
075 GeronimoLogging level = GeronimoLogging.WARN;
076 if (parser.isVerboseInfo()) {
077 level = GeronimoLogging.INFO;
078 } else if (parser.isVerboseDebug()) {
079 level = GeronimoLogging.DEBUG;
080 } else if (parser.isVerboseTrace()) {
081 level = GeronimoLogging.TRACE;
082 }
083 GeronimoLogging.initialize(level);
084 }
085
086 protected abstract MainConfigurationBootstrapper newMainConfigurationBootstrapper();
087
088 protected abstract CLParser getCLParser();
089
090 }