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.io.IOException;
   5 import java.util.Properties;
   6
   7 import org.apache.commons.cli.CommandLine;
   8 import org.apache.commons.cli.CommandLineParser;
   9 import org.apache.commons.cli.GnuParser;
  10 import org.apache.commons.cli.HelpFormatter;
  11 import org.apache.commons.cli.Option;
  12 import org.apache.commons.cli.OptionBuilder;
  13 import org.apache.commons.cli.Options;
  14 import org.apache.commons.cli.ParseException;
  15 import org.apache.commons.io.IOUtils;
  16 import org.apache.commons.logging.Log;
  17 import org.apache.commons.logging.LogFactory;
  18 import org.argeo.slc.SlcException;
  19 import org.argeo.slc.logging.Log4jUtils;
  20 import org.argeo.slc.runtime.SlcExecutionContext;
  21 import org.argeo.slc.runtime.SlcRuntime;
  22 import org.springframework.context.ConfigurableApplicationContext;
  23 import org.springframework.context.support.ClassPathXmlApplicationContext;
  24 import org.springframework.context.support.FileSystemXmlApplicationContext;
  25
  26 public class SlcMain {
  27         public enum Mode {
  28                 single, agent
  29         }
  30
  31         private static Log log = null;
  32
  33         private final static String BOOTSTRAP_LOG4J_CONFIG = "org/argeo/slc/cli/bootstrapLog4j.properties";
  34         private final static String DEFAULT_AGENT_CONTEXT = "classpath:org/argeo/slc/cli/spring-agent-default.xml";
  35
  36         private final static Option modeOpt = OptionBuilder.withLongOpt("mode")
  37                         .withArgName("mode").hasArg().withDescription(
  38                                         "SLC execution mode, one of: " + listModeValues()).create(
  39                                         'm');
  40
  41         private final static Option propertyOpt = OptionBuilder.withLongOpt(
  42                         "property").withArgName("prop1=val1,prop2=val2").hasArgs()
  43                         .withValueSeparator(',').withDescription(
  44                                         "use value for given property").create('p');
  45
  46         private final static Option propertiesOpt = OptionBuilder.withLongOpt(
  47                         "properties").withArgName("properties file").hasArgs()
  48                         .withValueSeparator(',').withDescription(
  49                                         "load properties from file (-p has priority)").create('P');
  50
  51         private final static Option scriptOpt = OptionBuilder.withLongOpt("script")
  52                         .withArgName("script").hasArg().withDescription(
  53                                         "SLC script to execute").create('s');
  54
  55         private final static Option targetsOpt = OptionBuilder.withLongOpt(
  56                         "targets").withArgName("targets").hasArg().withDescription(
  57                         "Targets to execute").create('t');
  58
  59         private final static Option runtimeOpt = OptionBuilder.withLongOpt(
  60                         "runtime").withArgName("runtime").hasArg().withDescription(
  61                         "Runtime to use, either a full path or relative to slc app conf dir: "
  62                                         + "<conf dir>/runtime/<runtime>/.xml").create('r');
  63
  64         private final static Options options;
  65
  66         private final static String commandName = "slc";
  67
  68         static {
  69                 options = new Options();
  70                 options.addOption(modeOpt);
  71                 options.addOption(scriptOpt);
  72                 options.addOption(targetsOpt);
  73                 options.addOption(propertyOpt);
  74                 options.addOption(propertiesOpt);
  75                 options.addOption(runtimeOpt);
  76         }
  77
  78         public static void main(String[] args) {
  79                 Mode mode = null;
  80                 Properties properties = new Properties();
  81                 String script = null;
  82                 String targets = null;
  83                 String runtimeStr = null;
  84
  85                 try {
  86
  87                         CommandLineParser clParser = new GnuParser();
  88                         CommandLine cl = clParser.parse(options, args);
  89
  90                         // Mode
  91                         String modeStr = cl.getOptionValue(modeOpt.getOpt());
  92                         if (modeStr == null) {
  93                                 mode = Mode.single;
  94                         } else {
  95                                 try {
  96                                         mode = Mode.valueOf(modeStr);
  97                                 } catch (IllegalArgumentException e) {
  98                                         throw new SlcException("Unrecognized mode '" + modeStr
  99                                                         + "'", e);
 100                                 }
 101                         }
 102
 103                         // Script
 104                         if (mode.equals(Mode.single)) {
 105                                 if (!cl.hasOption(scriptOpt.getOpt()))
 106                                         throw new SlcException("Mode " + Mode.single
 107                                                         + " requires option '" + scriptOpt.getLongOpt()
 108                                                         + "'");
 109                                 script = cl.getOptionValue(scriptOpt.getOpt());
 110
 111                                 // Targets
 112                                 if (cl.hasOption(targetsOpt.getOpt()))
 113                                         targets = cl.getOptionValue(targetsOpt.getOpt());
 114                         }
 115
 116                         // Properties
 117                         if (cl.hasOption(propertiesOpt.getOpt())) {
 118                                 for (String propertyFile : cl.getOptionValues(propertiesOpt
 119                                                 .getOpt())) {
 120                                         loadPropertyFile(properties, propertyFile);
 121                                 }
 122                         }
 123                         if (cl.hasOption(propertyOpt.getOpt())) {
 124                                 for (String property : cl.getOptionValues(propertyOpt.getOpt())) {
 125                                         addProperty(properties, property);
 126                                 }
 127                         }
 128
 129                         // Runtime
 130                         if (cl.hasOption(runtimeOpt.getOpt())) {
 131                                 runtimeStr = cl.getOptionValue(runtimeOpt.getOpt());
 132                         }
 133                 } catch (ParseException e) {
 134                         System.err.println("Problem with command line arguments. "
 135                                         + e.getMessage());
 136                         badExit();
 137                 } catch (SlcException e) {
 138                         System.err.println(e.getMessage());
 139                         badExit();
 140                 } catch (Exception e) {
 141                         System.err.println("Unexpected exception when bootstrapping.");
 142                         e.printStackTrace();
 143                         badExit();
 144                 }
 145
 146                 // Initializes logging and log arguments
 147                 initLogging(properties);
 148                 if (log.isDebugEnabled()) {
 149                         log.debug("Mode: " + mode);
 150                         if (runtimeStr != null)
 151                                 log.debug("Runtime: " + runtimeStr);
 152                         log.debug("User properties: " + properties);
 153                         if (script != null)
 154                                 log.debug("Script: " + script);
 155                         if (targets != null)
 156                                 log.debug("Targets: " + targets);
 157                 }
 158
 159                 // Execution
 160                 if (mode.equals(Mode.single)) {
 161                         try {
 162                                 // DefaultSlcRuntime runtime = new DefaultSlcRuntime();
 163                                 // FIXME: inject this more cleanly
 164                                 ClassLoader cl = Thread.currentThread().getContextClassLoader();
 165                                 Class clss = cl.loadClass("org.argeo.slc.ant.AntSlcRuntime");
 166                                 SlcRuntime<? extends SlcExecutionContext> runtime = (SlcRuntime<? extends SlcExecutionContext>) clss
 167                                                 .newInstance();
 168                                 runtime.executeScript(runtimeStr, script, targets, properties,
 169                                                 null, null);
 170                                 // System.exit(0);
 171                         } catch (Exception e) {
 172                                 log.error("SLC client terminated with an error: ", e);
 173                                 System.exit(1);
 174                         }
 175                 }
 176                 // Agent
 177                 else if (mode.equals(Mode.agent)) {
 178                         final ConfigurableApplicationContext applicationContext;
 179                         if (runtimeStr == null) {
 180                                 applicationContext = new ClassPathXmlApplicationContext(
 181                                                 DEFAULT_AGENT_CONTEXT);
 182                         } else {
 183                                 applicationContext = new FileSystemXmlApplicationContext(
 184                                                 runtimeStr);
 185                         }
 186                         applicationContext.registerShutdownHook();
 187                         applicationContext.start();
 188                         log.info("SLC Agent context started.");
 189                 }
 190         }
 191
 192         public static void printUsage() {
 193                 new HelpFormatter().printHelp(commandName, options, true);
 194         }
 195
 196         private static String listModeValues() {
 197                 StringBuffer buf = new StringBuffer("");
 198                 for (Mode mode : Mode.values()) {
 199                         buf.append(mode).append(", ");
 200                 }
 201                 String str = buf.toString();
 202                 // unsafe, but there will be at least one value in the enum
 203                 return str.substring(0, str.length() - 2);
 204         }
 205
 206         protected static void addProperty(Properties properties, String property) {
 207                 int eqIndex = property.indexOf('=');
 208                 if (eqIndex == 0)
 209                         throw new SlcException("Badly formatted property " + property);
 210
 211                 if (eqIndex > 0) {
 212                         String key = property.substring(0, eqIndex);
 213                         String value = property.substring(eqIndex + 1);
 214                         properties.setProperty(key, value);
 215
 216                 } else {
 217                         properties.setProperty(property, "true");
 218                 }
 219         }
 220
 221         protected static void loadPropertyFile(Properties properties,
 222                         String propertyFile) {
 223                 FileInputStream in = null;
 224                 try {
 225                         in = new FileInputStream(propertyFile);
 226                         properties.load(in);
 227                 } catch (Exception e) {
 228                         throw new SlcException("Could not load proeprty file "
 229                                         + propertyFile);
 230                 } finally {
 231                         IOUtils.closeQuietly(in);
 232                 }
 233         }
 234
 235         private static void initLogging(Properties userProperties) {
 236                 System.setProperty("log4j.defaultInitOverride", "true");
 237
 238                 // Add log4j user properties to System properties
 239                 for (Object obj : userProperties.keySet()) {
 240                         String key = obj.toString();
 241                         if (key.startsWith("log4j.")) {
 242                                 System.setProperty(key, userProperties.getProperty(key));
 243                         }
 244                 }
 245                 Log4jUtils.initLog4j(System.getProperty("log4j.configuration",
 246                                 "classpath:" + BOOTSTRAP_LOG4J_CONFIG));
 247                 log = LogFactory.getLog(SlcMain.class);
 248
 249         }
 250
 251         private static void badExit() {
 252                 printUsage();
 253                 System.exit(1);
 254         }
 255 }