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

   1 package org.argeo.slc.cli;
   2
   3 import java.io.FileInputStream;
   4 import java.util.Properties;
   5
   6 import org.apache.commons.cli.CommandLine;
   7 import org.apache.commons.cli.CommandLineParser;
   8 import org.apache.commons.cli.GnuParser;
   9 import org.apache.commons.cli.HelpFormatter;
  10 import org.apache.commons.cli.Option;
  11 import org.apache.commons.cli.OptionBuilder;
  12 import org.apache.commons.cli.Options;
  13 import org.apache.commons.cli.ParseException;
  14 import org.apache.commons.io.IOUtils;
  15 import org.apache.commons.logging.Log;
  16 import org.apache.commons.logging.LogFactory;
  17 import org.argeo.slc.SlcException;
  18 import org.argeo.slc.logging.Log4jUtils;
  19 import org.argeo.slc.runtime.SlcExecutionContext;
  20 import org.argeo.slc.runtime.SlcRuntime;
  21
  22 public class SlcMain {
  23         public enum Mode {
  24                 single, agent
  25         }
  26
  27         private static Log log = null;
  28
  29         private final static String BOOTSTRAP_LOG4J_CONFIG = "org/argeo/slc/cli/bootstrapLog4j.properties";
  30
  31         private final static Option modeOpt = OptionBuilder.withLongOpt("mode")
  32                         .withArgName("mode").hasArg().withDescription(
  33                                         "SLC execution mode, one of: " + listModeValues()).create(
  34                                         'm');
  35
  36         private final static Option propertyOpt = OptionBuilder.withLongOpt(
  37                         "property").withArgName("prop1=val1,prop2=val2").hasArgs()
  38                         .withValueSeparator(',').withDescription(
  39                                         "use value for given property").create('p');
  40
  41         private final static Option propertiesOpt = OptionBuilder.withLongOpt(
  42                         "properties").withArgName("properties file").hasArgs()
  43                         .withValueSeparator(',').withDescription(
  44                                         "load properties from file (-p has priority)").create('P');
  45
  46         private final static Option scriptOpt = OptionBuilder.withLongOpt("script")
  47                         .withArgName("script").hasArg().withDescription(
  48                                         "SLC script to execute").create('s');
  49
  50         private final static Option targetsOpt = OptionBuilder.withLongOpt(
  51                         "targets").withArgName("targets").hasArg().withDescription(
  52                         "Targets to execute").create('t');
  53
  54         private final static Option runtimeOpt = OptionBuilder.withLongOpt(
  55                         "runtime").withArgName("runtime").hasArg().withDescription(
  56                         "Runtime to use, either a full path or relative to slc app conf dir: "
  57                                         + "<conf dir>/runtime/<runtime>/.xml").create('r');
  58
  59         private final static Options options;
  60
  61         private final static String commandName = "slc";
  62
  63         static {
  64                 options = new Options();
  65                 options.addOption(modeOpt);
  66                 options.addOption(scriptOpt);
  67                 options.addOption(targetsOpt);
  68                 options.addOption(propertyOpt);
  69                 options.addOption(propertiesOpt);
  70                 options.addOption(runtimeOpt);
  71         }
  72
  73         public static void main(String[] args) {
  74                 Mode mode = null;
  75                 Properties properties = new Properties();
  76                 String script = null;
  77                 String targets = null;
  78                 String runtimeStr = null;
  79
  80                 try {
  81
  82                         CommandLineParser clParser = new GnuParser();
  83                         CommandLine cl = clParser.parse(options, args);
  84
  85                         // Mode
  86                         String modeStr = cl.getOptionValue(modeOpt.getOpt());
  87                         if (modeStr == null) {
  88                                 mode = Mode.single;
  89                         } else {
  90                                 try {
  91                                         mode = Mode.valueOf(modeStr);
  92                                 } catch (IllegalArgumentException e) {
  93                                         throw new SlcException("Unrecognized mode '" + modeStr
  94                                                         + "'", e);
  95                                 }
  96                         }
  97
  98                         // Script
  99                         if (mode.equals(Mode.single)) {
 100                                 if (!cl.hasOption(scriptOpt.getOpt()))
 101                                         throw new SlcException("Mode " + Mode.single
 102                                                         + " requires option '" + scriptOpt.getLongOpt()
 103                                                         + "'");
 104                                 script = cl.getOptionValue(scriptOpt.getOpt());
 105
 106                                 // Targets
 107                                 if (cl.hasOption(targetsOpt.getOpt()))
 108                                         targets = cl.getOptionValue(targetsOpt.getOpt());
 109                         }
 110
 111                         // Properties
 112                         if (cl.hasOption(propertiesOpt.getOpt())) {
 113                                 for (String propertyFile : cl.getOptionValues(propertiesOpt
 114                                                 .getOpt())) {
 115                                         loadPropertyFile(properties, propertyFile);
 116                                 }
 117                         }
 118                         if (cl.hasOption(propertyOpt.getOpt())) {
 119                                 for (String property : cl.getOptionValues(propertyOpt.getOpt())) {
 120                                         addProperty(properties, property);
 121                                 }
 122                         }
 123
 124                         // Runtime
 125                         if (cl.hasOption(runtimeOpt.getOpt())) {
 126                                 runtimeStr = cl.getOptionValue(runtimeOpt.getOpt());
 127                         }
 128                 } catch (ParseException e) {
 129                         System.err.println("Problem with command line arguments. "
 130                                         + e.getMessage());
 131                         badExit();
 132                 } catch (SlcException e) {
 133                         System.err.println(e.getMessage());
 134                         badExit();
 135                 } catch (Exception e) {
 136                         System.err.println("Unexpected exception when bootstrapping.");
 137                         e.printStackTrace();
 138                         badExit();
 139                 }
 140
 141                 // Initializes logging and log arguments
 142                 initLogging(properties);
 143                 if (log.isDebugEnabled()) {
 144                         log.debug("Mode: " + mode);
 145                         if (runtimeStr != null)
 146                                 log.debug("Runtime: " + runtimeStr);
 147                         log.debug("User properties: " + properties);
 148                         if (script != null)
 149                                 log.debug("Script: " + script);
 150                         if (targets != null)
 151                                 log.debug("Targets: " + targets);
 152                 }
 153
 154                 // Execution
 155                 if (mode.equals(Mode.single)) {
 156                         try {
 157                                 // DefaultSlcRuntime runtime = new DefaultSlcRuntime();
 158                                 // FIXME: inject this more cleanly
 159                                 ClassLoader cl = Thread.currentThread().getContextClassLoader();
 160                                 Class clss = cl.loadClass("org.argeo.slc.ant.AntSlcRuntime");
 161                                 SlcRuntime<? extends SlcExecutionContext> runtime = (SlcRuntime<? extends SlcExecutionContext>) clss
 162                                                 .newInstance();
 163                                 runtime.executeScript(runtimeStr, script, targets, properties,
 164                                                 null, null);
 165                                 // System.exit(0);
 166                         } catch (Exception e) {
 167                                 log.error("SLC client terminated with an error: ", e);
 168                                 System.exit(1);
 169                         }
 170                 }
 171         }
 172
 173         public static void printUsage() {
 174                 new HelpFormatter().printHelp(commandName, options, true);
 175         }
 176
 177         private static String listModeValues() {
 178                 StringBuffer buf = new StringBuffer("");
 179                 for (Mode mode : Mode.values()) {
 180                         buf.append(mode).append(", ");
 181                 }
 182                 String str = buf.toString();
 183                 // unsafe, but there will be at least one value in the enum
 184                 return str.substring(0, str.length() - 2);
 185         }
 186
 187         protected static void addProperty(Properties properties, String property) {
 188                 int eqIndex = property.indexOf('=');
 189                 if (eqIndex == 0)
 190                         throw new SlcException("Badly formatted property " + property);
 191
 192                 if (eqIndex > 0) {
 193                         String key = property.substring(0, eqIndex);
 194                         String value = property.substring(eqIndex + 1);
 195                         properties.setProperty(key, value);
 196
 197                 } else {
 198                         properties.setProperty(property, "true");
 199                 }
 200         }
 201
 202         protected static void loadPropertyFile(Properties properties,
 203                         String propertyFile) {
 204                 FileInputStream in = null;
 205                 try {
 206                         in = new FileInputStream(propertyFile);
 207                         properties.load(in);
 208                 } catch (Exception e) {
 209                         throw new SlcException("Could not load proeprty file "
 210                                         + propertyFile);
 211                 } finally {
 212                         IOUtils.closeQuietly(in);
 213                 }
 214         }
 215
 216         private static void initLogging(Properties userProperties) {
 217                 System.setProperty("log4j.defaultInitOverride", "true");
 218
 219                 // Add log4j user properties to System properties
 220                 for (Object obj : userProperties.keySet()) {
 221                         String key = obj.toString();
 222                         if (key.startsWith("log4j.")) {
 223                                 System.setProperty(key, userProperties.getProperty(key));
 224                         }
 225                 }
 226                 Log4jUtils.initLog4j(System.getProperty("log4j.configuration",
 227                                 "classpath:" + BOOTSTRAP_LOG4J_CONFIG));
 228                 log = LogFactory.getLog(SlcMain.class);
 229
 230         }
 231
 232         private static void badExit() {
 233                 printUsage();
 234                 System.exit(1);
 235         }
 236 }