runtime/org.argeo.slc.launcher/src/main/java/org/argeo/slc/cli/SlcMain.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.cli;
  17
  18 import java.io.FileInputStream;
  19 import java.util.Properties;
  20
  21 import org.apache.commons.cli.CommandLine;
  22 import org.apache.commons.cli.CommandLineParser;
  23 import org.apache.commons.cli.GnuParser;
  24 import org.apache.commons.cli.HelpFormatter;
  25 import org.apache.commons.cli.Option;
  26 import org.apache.commons.cli.OptionBuilder;
  27 import org.apache.commons.cli.Options;
  28 import org.apache.commons.cli.ParseException;
  29 import org.apache.commons.io.IOUtils;
  30 import org.argeo.slc.SlcException;
  31
  32 @SuppressWarnings("static-access")
  33 public class SlcMain {
  34         public enum Type {
  35                 standalone, agent, server
  36         }
  37
  38         private static Boolean debug = true;
  39
  40         // private final static String BOOTSTRAP_LOG4J_CONFIG =
  41         // "org/argeo/slc/cli/bootstrapLog4j.properties";
  42         // private final static String DEFAULT_AGENT_CONTEXT =
  43         // "classpath:org/argeo/slc/cli/spring-agent-default.xml";
  44
  45         private final static Option typeOpt = OptionBuilder.withLongOpt("mode")
  46                         .withArgName("mode").hasArg()
  47                         .withDescription("Execution type, one of: " + listTypeValues())
  48                         .create('t');
  49
  50         private final static Option propertyOpt = OptionBuilder
  51                         .withLongOpt("property").withArgName("prop1=val1,prop2=val2")
  52                         .hasArgs().withValueSeparator(',')
  53                         .withDescription("use value for given property").create('p');
  54
  55         private final static Option propertiesOpt = OptionBuilder
  56                         .withLongOpt("properties").withArgName("properties file").hasArgs()
  57                         .withValueSeparator(',')
  58                         .withDescription("load properties from file (-p has priority)")
  59                         .create('P');
  60
  61         private final static Option moduleOpt = OptionBuilder.withLongOpt("module")
  62                         .withArgName("module").hasArg().withDescription("Execution module")
  63                         .create('m');
  64
  65         private final static Option flowsOpt = OptionBuilder.withLongOpt("flows")
  66                         .withArgName("flows").hasArg().withDescription("Flows to execute")
  67                         .create('f');
  68
  69         private final static Option runtimeOpt = OptionBuilder
  70                         .withLongOpt("runtime").withArgName("runtime").hasArg()
  71                         .withDescription("Runtime URL").create('r');
  72
  73         private final static Options options;
  74
  75         private final static String commandName = "slc";
  76
  77         static {
  78                 options = new Options();
  79                 options.addOption(typeOpt);
  80                 options.addOption(moduleOpt);
  81                 options.addOption(flowsOpt);
  82                 options.addOption(propertyOpt);
  83                 options.addOption(propertiesOpt);
  84                 options.addOption(runtimeOpt);
  85         }
  86
  87         public static void main(String[] args) {
  88                 Type type = null;
  89                 Properties properties = new Properties();
  90                 String module = null;
  91                 String flows = null;
  92                 String urlStr = null;
  93
  94                 try {
  95
  96                         CommandLineParser clParser = new GnuParser();
  97                         CommandLine cl = clParser.parse(options, args);
  98
  99                         // Mode
 100                         String typeStr = cl.getOptionValue(typeOpt.getOpt());
 101                         if (typeStr == null) {
 102                                 type = Type.standalone;
 103                         } else {
 104                                 try {
 105                                         type = Type.valueOf(typeStr);
 106                                 } catch (IllegalArgumentException e) {
 107                                         throw new SlcException("Unrecognized mode '" + typeStr
 108                                                         + "'", e);
 109                                 }
 110                         }
 111
 112                         // Script
 113                         if (type.equals(Type.standalone)) {
 114                                 if (!cl.hasOption(moduleOpt.getOpt()))
 115                                         throw new SlcException("Type " + Type.standalone
 116                                                         + " requires option '" + moduleOpt.getLongOpt()
 117                                                         + "'");
 118                                 module = cl.getOptionValue(moduleOpt.getOpt());
 119
 120                                 // Targets
 121                                 if (cl.hasOption(flowsOpt.getOpt()))
 122                                         flows = cl.getOptionValue(flowsOpt.getOpt());
 123                         }
 124
 125                         // Properties
 126                         if (cl.hasOption(propertiesOpt.getOpt())) {
 127                                 for (String propertyFile : cl.getOptionValues(propertiesOpt
 128                                                 .getOpt())) {
 129                                         loadPropertyFile(properties, propertyFile);
 130                                 }
 131                         }
 132                         if (cl.hasOption(propertyOpt.getOpt())) {
 133                                 for (String property : cl.getOptionValues(propertyOpt.getOpt())) {
 134                                         addProperty(properties, property);
 135                                 }
 136                         }
 137
 138                         // Runtime
 139                         if (cl.hasOption(runtimeOpt.getOpt())) {
 140                                 urlStr = cl.getOptionValue(runtimeOpt.getOpt());
 141                         }
 142                 } catch (ParseException e) {
 143                         System.err.println("Problem with command line arguments. "
 144                                         + e.getMessage());
 145                         badExit();
 146                 } catch (SlcException e) {
 147                         System.err.println(e.getMessage());
 148                         badExit();
 149                 } catch (Exception e) {
 150                         System.err.println("Unexpected exception when bootstrapping.");
 151                         e.printStackTrace();
 152                         badExit();
 153                 }
 154
 155                 if (debug) {
 156                         debug("Mode: " + type);
 157                         if (urlStr != null)
 158                                 debug("Runtime: " + urlStr);
 159                         debug("User properties: " + properties);
 160                         if (module != null)
 161                                 debug("Module: " + module);
 162                         if (flows != null)
 163                                 debug("Flows: " + flows);
 164                 }
 165
 166                 // Standalone
 167                 if (type.equals(Type.standalone)) {
 168                 }
 169                 // Agent
 170                 else if (type.equals(Type.agent)) {
 171                 }
 172         }
 173
 174         public static void printUsage() {
 175                 new HelpFormatter().printHelp(commandName, options, true);
 176         }
 177
 178         private static String listTypeValues() {
 179                 StringBuffer buf = new StringBuffer("");
 180                 for (Type mode : Type.values()) {
 181                         buf.append(mode).append(", ");
 182                 }
 183                 String str = buf.toString();
 184                 // unsafe, but there will be at least one value in the enum
 185                 return str.substring(0, str.length() - 2);
 186         }
 187
 188         protected static void addProperty(Properties properties, String property) {
 189                 int eqIndex = property.indexOf('=');
 190                 if (eqIndex == 0)
 191                         throw new SlcException("Badly formatted property " + property);
 192
 193                 if (eqIndex > 0) {
 194                         String key = property.substring(0, eqIndex);
 195                         String value = property.substring(eqIndex + 1);
 196                         properties.setProperty(key, value);
 197
 198                 } else {
 199                         properties.setProperty(property, "true");
 200                 }
 201         }
 202
 203         protected static void loadPropertyFile(Properties properties,
 204                         String propertyFile) {
 205                 FileInputStream in = null;
 206                 try {
 207                         in = new FileInputStream(propertyFile);
 208                         properties.load(in);
 209                 } catch (Exception e) {
 210                         throw new SlcException("Could not load proeprty file "
 211                                         + propertyFile);
 212                 } finally {
 213                         IOUtils.closeQuietly(in);
 214                 }
 215         }
 216
 217         private static void badExit() {
 218                 printUsage();
 219                 System.exit(1);
 220         }
 221
 222         protected static void info(Object msg) {
 223                 System.out.println(msg);
 224         }
 225
 226         protected static void debug(Object msg) {
 227                 System.out.println(msg);
 228         }
 229 }