org.argeo.slc.agent/src/main/java/org/argeo/slc/cli/SlcMain.java

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