package org.argeo.slc.osgi;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
import java.util.List;
import java.util.Map;
+import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.osgi.util.tracker.ServiceTracker;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
+import org.springframework.osgi.service.importer.OsgiServiceLifecycleListener;
public class OsgiExecutionModulesManager extends
AbstractExecutionModulesManager implements InitializingBean,
- DisposableBean {
+ DisposableBean, OsgiServiceLifecycleListener {
+ private final static String PROPERTY_CACHE_SERVICES = "slc.osgi.execution.cacheServices";
+
private final static Log log = LogFactory
.getLog(OsgiExecutionModulesManager.class);
private BundlesManager bundlesManager;
- private ServiceTracker executionContexts;
+ private ServiceTracker executionContextsTracker;
+ private Map<OsgiBundle, ExecutionContext> executionContexts = new HashMap<OsgiBundle, ExecutionContext>();
+ private Map<OsgiBundle, ExecutionFlowDescriptorConverter> executionFlowDescriptorConverters = new HashMap<OsgiBundle, ExecutionFlowDescriptorConverter>();
+ private Map<OsgiBundle, Set<ExecutionFlow>> executionFlows = new HashMap<OsgiBundle, Set<ExecutionFlow>>();
private ExecutionFlowDescriptorConverter defaultDescriptorConverter = new DefaultExecutionFlowDescriptorConverter();
+ private Boolean useCachedServices = Boolean.parseBoolean(System
+ .getProperty(PROPERTY_CACHE_SERVICES, "true"));
+
public ExecutionModuleDescriptor getExecutionModuleDescriptor(
String moduleName, String version) {
ExecutionModuleDescriptor md = new ExecutionModuleDescriptor();
md.setName(moduleName);
md.setVersion(version);
setMetadataFromBundle(md, null);
- getExecutionFlowDescriptorConverter(moduleName, version)
- .addFlowsToDescriptor(md, listFlows(moduleName, version));
+ ExecutionFlowDescriptorConverter executionFlowDescriptorConverter = getExecutionFlowDescriptorConverter(
+ moduleName, version);
+ if (executionFlowDescriptorConverter == null)
+ throw new SlcException("No flow converter found.");
+ executionFlowDescriptorConverter.addFlowsToDescriptor(md, listFlows(
+ moduleName, version));
return md;
}
- public List<ExecutionModuleDescriptor> listExecutionModules() {
+ public synchronized List<ExecutionModuleDescriptor> listExecutionModules() {
List<ExecutionModuleDescriptor> descriptors = new ArrayList<ExecutionModuleDescriptor>();
- ServiceReference[] srs = executionContexts.getServiceReferences();
- for (ServiceReference sr : srs) {
- ExecutionModuleDescriptor md = new ExecutionModuleDescriptor();
- setMetadataFromBundle(md, sr.getBundle());
- descriptors.add(md);
+ if (useCachedServices) {
+ for (Iterator<OsgiBundle> iterator = executionContexts.keySet()
+ .iterator(); iterator.hasNext();) {
+ OsgiBundle osgiBundle = iterator.next();
+ ExecutionModuleDescriptor md = new ExecutionModuleDescriptor();
+ setMetadataFromBundle(md, bundlesManager
+ .findRelatedBundle(osgiBundle));
+ descriptors.add(md);
+ }
+ } else {
+ ServiceReference[] arr = executionContextsTracker
+ .getServiceReferences();
+ if (arr == null) {
+ log.error("Tracker returned null.");
+ return descriptors;
+ }
+
+ List<ServiceReference> srs = Arrays.asList(arr);
+ // ServiceReference[] srs =
+ // executionContexts.getServiceReferences();
+ for (ServiceReference sr : srs) {
+ ExecutionModuleDescriptor md = new ExecutionModuleDescriptor();
+ setMetadataFromBundle(md, sr.getBundle());
+ descriptors.add(md);
+ }
}
return descriptors;
}
- protected Map<String, ExecutionFlow> listFlows(String moduleName,
- String moduleVersion) {
- // TODO: use service trackers?
- // String filter = OsgiFilterUtils.unifyFilter(ExecutionFlow.class,
- // null);
-
- String filter = "(Bundle-SymbolicName=" + moduleName + ")";
- ServiceReference[] sfs;
- try {
- sfs = bundlesManager.getBundleContext().getServiceReferences(
- ExecutionFlow.class.getName(), filter);
- } catch (InvalidSyntaxException e) {
- throw new SlcException(
- "Cannot retrieve service reference for flow " + filter, e);
- }
+ protected synchronized Map<String, ExecutionFlow> listFlows(
+ String moduleName, String moduleVersion) {
Map<String, ExecutionFlow> flows = new HashMap<String, ExecutionFlow>();
- for (ServiceReference sf : sfs) {
- ExecutionFlow flow = (ExecutionFlow) bundlesManager
- .getBundleContext().getService(sf);
- flows.put(flow.getName(), flow);
+ if (useCachedServices) {
+ Set<ExecutionFlow> flowsT = executionFlows.get(new OsgiBundle(
+ moduleName, moduleVersion));
+ for (ExecutionFlow flow : flowsT)
+ flows.put(flow.getName(), flow);
+ } else {
+
+ // TODO: use service trackers?
+ // String filter = OsgiFilterUtils.unifyFilter(ExecutionFlow.class,
+ // null);
+
+ String filter = "(Bundle-SymbolicName=" + moduleName + ")";
+ ServiceReference[] sfs;
+ try {
+ sfs = bundlesManager.getBundleContext().getServiceReferences(
+ ExecutionFlow.class.getName(), filter);
+ } catch (InvalidSyntaxException e) {
+ throw new SlcException(
+ "Cannot retrieve service reference for flow " + filter,
+ e);
+ }
+
+ for (ServiceReference sf : sfs) {
+ ExecutionFlow flow = (ExecutionFlow) bundlesManager
+ .getBundleContext().getService(sf);
+ flows.put(flow.getName(), flow);
+ }
}
return flows;
}
- public ExecutionFlow findExecutionFlow(String moduleName,
+ protected ExecutionFlow findExecutionFlow(String moduleName,
String moduleVersion, String flowName) {
String filter = "(&(Bundle-SymbolicName=" + moduleName
+ ")(org.springframework.osgi.bean.name=" + flowName + "))";
filter);
}
- public ExecutionContext findExecutionContext(String moduleName,
+ protected ExecutionContext findExecutionContext(String moduleName,
String moduleVersion) {
String filter = "(&(Bundle-SymbolicName=" + moduleName
+ ")(Bundle-Version=" + moduleVersion + "))";
filter);
}
- public ExecutionFlowDescriptorConverter findExecutionFlowDescriptorConverter(
+ protected ExecutionFlowDescriptorConverter findExecutionFlowDescriptorConverter(
String moduleName, String moduleVersion) {
+
String filter = "(&(Bundle-SymbolicName=" + moduleName
+ ")(Bundle-Version=" + moduleVersion + "))";
return bundlesManager.getSingleService(
}
public void afterPropertiesSet() throws Exception {
- executionContexts = bundlesManager.newTracker(ExecutionContext.class);
+ if (!useCachedServices)
+ executionContextsTracker = bundlesManager
+ .newTracker(ExecutionContext.class);
}
public void destroy() throws Exception {
- if (executionContexts != null)
- executionContexts.close();
+ if (executionContextsTracker != null)
+ executionContextsTracker.close();
}
/**
execute(realizedFlow);
}
- protected ExecutionFlowDescriptorConverter getExecutionFlowDescriptorConverter(
+ protected synchronized ExecutionFlowDescriptorConverter getExecutionFlowDescriptorConverter(
String moduleName, String moduleVersion) {
- // Check whether a descriptor converter is published by this module
- ExecutionFlowDescriptorConverter descriptorConverter = findExecutionFlowDescriptorConverter(
- moduleName, moduleVersion);
- if (descriptorConverter == null)
- return defaultDescriptorConverter;
- else
- return descriptorConverter;
+ if (useCachedServices) {
+ OsgiBundle osgiBundle = new OsgiBundle(moduleName, moduleVersion);
+ if (executionFlowDescriptorConverters.containsKey(osgiBundle))
+ return executionFlowDescriptorConverters.get(osgiBundle);
+ else
+ return defaultDescriptorConverter;
+ } else {
+ // Check whether a descriptor converter is published by this module
+ ExecutionFlowDescriptorConverter descriptorConverter = findExecutionFlowDescriptorConverter(
+ moduleName, moduleVersion);
+ if (descriptorConverter == null)
+ return defaultDescriptorConverter;
+ else
+ return descriptorConverter;
+ }
}
public void execute(RealizedFlow realizedFlow) {
else
return obj.toString();
}
+
+ @SuppressWarnings("unchecked")
+ public synchronized void bind(Object service, Map properties)
+ throws Exception {
+ if (service instanceof ExecutionContext) {
+ ExecutionContext executionContext = (ExecutionContext) service;
+ OsgiBundle osgiBundle = asOsgiBundle(properties);
+ executionContexts.put(osgiBundle, executionContext);
+ if (log.isTraceEnabled())
+ log.debug("Registered execution context from " + osgiBundle);
+ } else if (service instanceof ExecutionFlow) {
+ ExecutionFlow executionFlow = (ExecutionFlow) service;
+ OsgiBundle osgiBundle = asOsgiBundle(properties);
+ if (!executionFlows.containsKey(osgiBundle)) {
+ executionFlows.put(osgiBundle, new HashSet());
+ }
+ executionFlows.get(osgiBundle).add(executionFlow);
+ if (log.isTraceEnabled())
+ log
+ .debug("Registered " + executionFlow + " from "
+ + osgiBundle);
+
+ } else if (service instanceof ExecutionFlowDescriptorConverter) {
+ ExecutionFlowDescriptorConverter executionFlowDescriptorConverter = (ExecutionFlowDescriptorConverter) service;
+ OsgiBundle osgiBundle = asOsgiBundle(properties);
+ executionFlowDescriptorConverters.put(osgiBundle,
+ executionFlowDescriptorConverter);
+ if (log.isTraceEnabled())
+ log
+ .debug("Registered execution flow descriptor converter from "
+ + osgiBundle);
+ } else {
+ // ignore
+ }
+ }
+
+ @SuppressWarnings("unchecked")
+ public synchronized void unbind(Object service, Map properties)
+ throws Exception {
+ if (service instanceof ExecutionContext) {
+ OsgiBundle osgiBundle = asOsgiBundle(properties);
+ if (executionContexts.containsKey(osgiBundle)) {
+ executionContexts.remove(osgiBundle);
+ if (log.isTraceEnabled())
+ log.debug("Removed execution context from " + osgiBundle);
+ }
+ } else if (service instanceof ExecutionFlow) {
+ ExecutionFlow executionFlow = (ExecutionFlow) service;
+ OsgiBundle osgiBundle = asOsgiBundle(properties);
+ if (executionFlows.containsKey(osgiBundle)) {
+ executionFlows.get(osgiBundle).remove(executionFlow);
+ if (log.isTraceEnabled())
+ log.debug("Removed " + executionFlow + " from "
+ + osgiBundle);
+ }
+ } else if (service instanceof ExecutionFlowDescriptorConverter) {
+ OsgiBundle osgiBundle = asOsgiBundle(properties);
+ if (executionFlowDescriptorConverters.containsKey(osgiBundle)) {
+ executionFlowDescriptorConverters.remove(osgiBundle);
+ if (log.isTraceEnabled())
+ log
+ .debug("Removed execution flow descriptor converter from "
+ + osgiBundle);
+ }
+ } else {
+ // ignore
+ }
+ }
+
+ @SuppressWarnings("unchecked")
+ private OsgiBundle asOsgiBundle(Map properties) {
+ String bundleSymbolicName = checkAndGet(Constants.BUNDLE_SYMBOLICNAME,
+ properties);
+ String bundleVersion = checkAndGet(Constants.BUNDLE_VERSION, properties);
+ return new OsgiBundle(bundleSymbolicName, bundleVersion);
+ }
+
+ @SuppressWarnings("unchecked")
+ private String checkAndGet(Object key, Map properties) {
+ if (!properties.containsKey(key) || properties.get(key) == null)
+ throw new SlcException(key + " not set in " + properties);
+ else
+ return properties.get(key).toString();
+ }
+
+ public void setDefaultDescriptorConverter(
+ ExecutionFlowDescriptorConverter defaultDescriptorConverter) {
+ this.defaultDescriptorConverter = defaultDescriptorConverter;
+ }
}
projects / gpl / argeo-slc.git / commitdiff