runtime/org.argeo.slc.support.equinox/src/main/java/org/argeo/slc/equinox/ExecutionCommandProvider.java

   1 package org.argeo.slc.equinox;
   2
   3 import org.apache.commons.logging.Log;
   4 import org.apache.commons.logging.LogFactory;
   5 import org.argeo.slc.SlcException;
   6 import org.argeo.slc.osgi.OsgiExecutionModulesManager;
   7 import org.argeo.slc.process.RealizedFlow;
   8 import org.eclipse.core.runtime.adaptor.EclipseStarter;
   9 import org.eclipse.osgi.framework.console.CommandInterpreter;
  10 import org.eclipse.osgi.framework.console.CommandProvider;
  11
  12 public class ExecutionCommandProvider implements CommandProvider {
  13         private final static Log log = LogFactory
  14                         .getLog(ExecutionCommandProvider.class);
  15
  16         private final static String SLC_WITH_REFRESH = "slc";
  17         private final static String SLC_NO_REFRESH = "slcnr";
  18
  19         private OsgiExecutionModulesManager modulesManager;
  20
  21         private RealizedFlow lastLaunch = null;
  22
  23         public Object _slc(CommandInterpreter ci) {
  24                 return exec(SLC_WITH_REFRESH, ci);
  25         }
  26
  27         public Object _slcnr(CommandInterpreter ci) {
  28                 return exec(SLC_NO_REFRESH, ci);
  29         }
  30
  31         protected Object exec(String slcCommand, CommandInterpreter ci) {
  32                 // TODO: check version
  33                 String firstArg = ci.nextArgument();
  34                 if (firstArg == null) {
  35                         if (lastLaunch != null) {
  36                                 String cmd = slcCommand + " " + lastLaunch.getModuleName()
  37                                                 + " " + lastLaunch.getFlowDescriptor().getName();
  38                                 if (log.isDebugEnabled())
  39                                         log.debug("Execute again last command: " + cmd);
  40                                 return ci.execute(cmd);
  41                         } else {
  42                                 ci.execute("help");
  43                                 throw new SlcException("Command not properly formatted");
  44                         }
  45                 }
  46                 String executionName = ci.nextArgument();
  47
  48                 launch(slcCommand, firstArg, executionName);
  49                 return "COMMAND COMPLETED";
  50         }
  51
  52         protected void launch(String slcCommand, String firstArg,
  53                         String executionName) {
  54                 lastLaunch = modulesManager.findRealizedFlow(firstArg, executionName);
  55                 if (lastLaunch == null)
  56                         throw new SlcException("Cannot find launch for " + firstArg + " "
  57                                         + executionName);
  58
  59                 // Execute
  60                 if (SLC_WITH_REFRESH.equals(slcCommand))
  61                         modulesManager.updateAndExecute(lastLaunch);
  62                 else if (SLC_NO_REFRESH.equals(slcCommand))
  63                         modulesManager.execute(lastLaunch);
  64                 else
  65                         throw new SlcException("Unrecognized SLC command " + slcCommand);
  66         }
  67
  68         public String getHelp() {
  69                 StringBuffer buf = new StringBuffer();
  70                 buf.append("---SLC Execution Commands---\n");
  71                 buf
  72                                 .append("\tslc (<id>|<segment of bsn>) <execution bean>"
  73                                                 + "  - refresh the bundle, execute an execution flow (without arg, execute last)\n");
  74                 buf
  75                                 .append("\tslcnr (<id>|<segment of bsn>) <execution bean>"
  76                                                 + "  - execute an execution flow (without arg, execute last)\n");
  77                 return buf.toString();
  78
  79         }
  80
  81         public void setModulesManager(OsgiExecutionModulesManager osgiModulesManager) {
  82                 this.modulesManager = osgiModulesManager;
  83         }
  84
  85         public void init() throws Exception {
  86                 final String module = System.getProperty("slc.launch.module");
  87                 final String executionName = System.getProperty("slc.launch.execution");
  88                 if (module != null) {
  89                         new Thread() {
  90
  91                                 @Override
  92                                 public void run() {
  93                                         try {
  94                                                 launch(SLC_NO_REFRESH, module, executionName);
  95                                                 // in case of failure OSGi runtime stays up and last
  96                                                 // launch can be used to debug by calling 'slc'
  97                                         } catch (Exception e) {
  98                                                 throw new SlcException("Error when executing "
  99                                                                 + executionName + " on " + module, e);
 100                                         }
 101                                         try {
 102                                                 EclipseStarter.shutdown();
 103                                         } catch (Exception e) {
 104                                                 throw new SlcException("Cannot shutdown equinox.", e);
 105                                         }
 106                                 }
 107
 108                         }.start();
 109                 }
 110
 111         }
 112 }