package org.argeo.slc.equinox;
-import java.util.List;
-
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.slc.SlcException;
+import org.argeo.slc.execution.ExecutionFlowDescriptor;
import org.argeo.slc.execution.ExecutionModule;
-import org.argeo.slc.process.SlcExecution;
import org.eclipse.osgi.framework.console.CommandInterpreter;
import org.eclipse.osgi.framework.console.CommandProvider;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.BundleException;
+import org.osgi.framework.FrameworkEvent;
+import org.osgi.framework.FrameworkListener;
+import org.osgi.framework.InvalidSyntaxException;
+import org.osgi.framework.ServiceReference;
+import org.osgi.service.packageadmin.PackageAdmin;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.context.ApplicationContext;
+import org.springframework.osgi.context.BundleContextAware;
+
+public class ExecutionCommandProvider implements CommandProvider,
+ BundleContextAware, FrameworkListener, InitializingBean {
+ private final static Log log = LogFactory
+ .getLog(ExecutionCommandProvider.class);
+
+ private Long defaultTimeout = 10000l;
+
+ private BundleContext bundleContext;
-public class ExecutionCommandProvider implements CommandProvider {
- private List<ExecutionModule> executionModules;
+ private String lastModuleName = null;
+ private String lastExecutionName = null;
- public Object _slc_execute(CommandInterpreter ci) {
- String moduleName = ci.nextArgument();
+ private final Object refreshedPackageSem = new Object();
+
+ /** @deprecated Use slc command instead. */
+ public Object _slc_exec(CommandInterpreter ci) {
+ return _slc(ci);
+ }
+
+ public Object _slc(CommandInterpreter ci) {
+ // TODO: check version
+ String firstArg = ci.nextArgument();
+ if (firstArg == null) {
+ if (lastModuleName != null) {
+ String cmd = "slc " + lastModuleName + " " + lastExecutionName;
+ if (log.isDebugEnabled())
+ log.debug("Execute again last command: " + cmd);
+ return ci.execute(cmd);
+ } else {
+ ci.execute("help");
+ throw new SlcException("Command not properly formatted");
+ }
+ }
String executionName = ci.nextArgument();
-
- SlcExecution slcExecution = new SlcExecution();
- slcExecution.getAttributes().put("slc.flows", executionName);
+ String moduleName = null;
+
+ // First check whether we have a bundleId
+ Long bundleId = null;
+ try {
+ bundleId = Long.parseLong(firstArg);
+ } catch (NumberFormatException e) {
+ // silent
+ }
+
+ // Look for bundle names containing pattern
+ Bundle bundle = null;
+ if (bundleId != null) {
+ bundle = bundleContext.getBundle(bundleId);
+ } else {
+ for (Bundle b : bundleContext.getBundles()) {
+ if (b.getSymbolicName().contains(firstArg)) {
+ bundle = b;
+ break;
+ }
+ }
+ }
+
+ if (bundle != null) {
+ moduleName = bundle.getSymbolicName();
+ lastModuleName = moduleName;
+ lastExecutionName = executionName;
+ } else {
+ log
+ .warn("Could not find any execution module matching these requirements.");
+ return null;
+ }
+
+ // Find module
ExecutionModule module = null;
- for (ExecutionModule moduleT : executionModules) {
- if(moduleT.getName().equals(moduleName)){
- // TODO: check version
- module = moduleT;
- break;
+ ServiceReference serviceRef = null;
+ try {
+ stopSynchronous(bundle);
+ updateSynchronous(bundle);
+ // Refresh in case there are fragments
+ refreshSynchronous(bundle);
+ startSynchronous(bundle);
+
+ String filter = "(Bundle-SymbolicName=" + moduleName + ")";
+ // Wait for application context to be ready
+ getServiceRefSynchronous(ApplicationContext.class.getName(), filter);
+
+ if (log.isDebugEnabled())
+ log.debug("Bundle " + bundle.getSymbolicName()
+ + " ready to be used at latest version.");
+
+ ServiceReference[] sfs = getServiceRefSynchronous(
+ ExecutionModule.class.getName(), filter);
+
+ if (sfs.length > 1)
+ log
+ .warn("More than one execution module service found in module "
+ + moduleName);
+
+ if (sfs.length > 0) {
+ serviceRef = sfs[0];
+ module = (ExecutionModule) bundleContext.getService(serviceRef);
+ }
+
+ if (module != null) {
+ ExecutionFlowDescriptor descriptor = new ExecutionFlowDescriptor();
+ descriptor.setName(executionName);
+ module.execute(descriptor);
+ log.info("Executed " + executionName + " from " + moduleName);
}
+
+ } catch (Exception e) {
+ throw new SlcException("Cannot find or update module.", e);
+ } finally {
+ if (serviceRef != null)
+ bundleContext.ungetService(serviceRef);
}
- if(module!=null)
- module.execute(slcExecution);
-
- return null;
+ return "COMMAND COMPLETED";
}
public String getHelp() {
StringBuffer buf = new StringBuffer();
buf.append("---SLC Execution Commands---\n");
- buf.append("\tslc_execute - Execute an execution flow\n");
+ buf
+ .append("\tslc (<id>|<segment of bsn>) <execution bean> - execute an execution flow (without arg, execute last)\n");
return buf.toString();
}
- public void setExecutionModules(List<ExecutionModule> executionModules) {
- this.executionModules = executionModules;
+ /** Updates bundle synchronously. */
+ protected void updateSynchronous(Bundle bundle) throws BundleException {
+ // int originalState = bundle.getState();
+ bundle.update();
+ boolean waiting = true;
+
+ long begin = System.currentTimeMillis();
+ do {
+ int state = bundle.getState();
+ if (state == Bundle.INSTALLED || state == Bundle.ACTIVE
+ || state == Bundle.RESOLVED)
+ waiting = false;
+
+ sleep(100);
+ if (System.currentTimeMillis() - begin > defaultTimeout)
+ throw new SlcException("Update of bundle "
+ + bundle.getSymbolicName()
+ + " timed out. Bundle state = " + bundle.getState());
+ } while (waiting);
+
+ if (log.isTraceEnabled())
+ log.debug("Bundle " + bundle.getSymbolicName() + " updated.");
+ }
+
+ /** Starts bundle synchronously. Does nothing if already started. */
+ protected void startSynchronous(Bundle bundle) throws BundleException {
+ int originalState = bundle.getState();
+ if (originalState == Bundle.ACTIVE)
+ return;
+
+ bundle.start();
+ boolean waiting = true;
+
+ long begin = System.currentTimeMillis();
+ do {
+ if (bundle.getState() == Bundle.ACTIVE)
+ waiting = false;
+
+ sleep(100);
+ if (System.currentTimeMillis() - begin > defaultTimeout)
+ throw new SlcException("Start of bundle "
+ + bundle.getSymbolicName()
+ + " timed out. Bundle state = " + bundle.getState());
+ } while (waiting);
+
+ if (log.isTraceEnabled())
+ log.debug("Bundle " + bundle.getSymbolicName() + " started.");
+ }
+
+ /** Stops bundle synchronously. Does nothing if already started. */
+ protected void stopSynchronous(Bundle bundle) throws BundleException {
+ int originalState = bundle.getState();
+ if (originalState != Bundle.ACTIVE)
+ return;
+
+ bundle.stop();
+ boolean waiting = true;
+
+ long begin = System.currentTimeMillis();
+ do {
+ if (bundle.getState() != Bundle.ACTIVE
+ && bundle.getState() != Bundle.STOPPING)
+ waiting = false;
+
+ sleep(100);
+ if (System.currentTimeMillis() - begin > defaultTimeout)
+ throw new SlcException("Stop of bundle "
+ + bundle.getSymbolicName()
+ + " timed out. Bundle state = " + bundle.getState());
+ } while (waiting);
+
+ if (log.isTraceEnabled())
+ log.debug("Bundle " + bundle.getSymbolicName() + " stopped.");
+ }
+
+ /** Refresh bundle synchronously. Does nothing if already started. */
+ protected void refreshSynchronous(Bundle bundle) throws BundleException {
+ ServiceReference packageAdminRef = bundleContext
+ .getServiceReference(PackageAdmin.class.getName());
+ PackageAdmin packageAdmin = (PackageAdmin) bundleContext
+ .getService(packageAdminRef);
+ Bundle[] bundles = { bundle };
+ packageAdmin.refreshPackages(bundles);
+
+ synchronized (refreshedPackageSem) {
+ try {
+ refreshedPackageSem.wait(defaultTimeout);
+ } catch (InterruptedException e) {
+ // silent
+ }
+ }
+
+ if (log.isTraceEnabled())
+ log.debug("Bundle " + bundle.getSymbolicName() + " refreshed.");
+ }
+
+ public void frameworkEvent(FrameworkEvent event) {
+ if (event.getType() == FrameworkEvent.PACKAGES_REFRESHED) {
+ synchronized (refreshedPackageSem) {
+ refreshedPackageSem.notifyAll();
+ }
+ }
+ }
+
+ protected ServiceReference[] getServiceRefSynchronous(String clss,
+ String filter) throws InvalidSyntaxException {
+ if (log.isTraceEnabled())
+ log.debug("Filter: '" + filter + "'");
+ ServiceReference[] sfs = null;
+ boolean waiting = true;
+ long begin = System.currentTimeMillis();
+ do {
+ sfs = bundleContext.getServiceReferences(clss, filter);
+
+ if (sfs != null)
+ waiting = false;
+
+ sleep(100);
+ if (System.currentTimeMillis() - begin > defaultTimeout)
+ throw new SlcException("Search of services " + clss
+ + " with filter " + filter + " timed out.");
+ } while (waiting);
+
+ return sfs;
+ }
+
+ protected void sleep(long ms) {
+ try {
+ Thread.sleep(ms);
+ } catch (InterruptedException e) {
+ // silent
+ }
+ }
+
+ public void setBundleContext(BundleContext bundleContext) {
+ this.bundleContext = bundleContext;
+ }
+
+ public void afterPropertiesSet() throws Exception {
+ bundleContext.addFrameworkListener(this);
+ }
+
+ public void setDefaultTimeout(Long defaultTimeout) {
+ this.defaultTimeout = defaultTimeout;
}
}
projects / gpl / argeo-slc.git / blobdiff