diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/PhaseManager.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/PhaseManager.java | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/PhaseManager.java b/sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/PhaseManager.java new file mode 100644 index 0000000000..85ef79b5d7 --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/invocation/impl/PhaseManager.java @@ -0,0 +1,313 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.core.invocation.impl; + +import static org.apache.tuscany.sca.invocation.Phase.IMPLEMENTATION; +import static org.apache.tuscany.sca.invocation.Phase.IMPLEMENTATION_POLICY; +import static org.apache.tuscany.sca.invocation.Phase.REFERENCE; +import static org.apache.tuscany.sca.invocation.Phase.REFERENCE_BINDING; +import static org.apache.tuscany.sca.invocation.Phase.REFERENCE_BINDING_POLICY; +import static org.apache.tuscany.sca.invocation.Phase.REFERENCE_BINDING_TRANSPORT; +import static org.apache.tuscany.sca.invocation.Phase.REFERENCE_BINDING_WIREFORMAT; +import static org.apache.tuscany.sca.invocation.Phase.REFERENCE_INTERFACE; +import static org.apache.tuscany.sca.invocation.Phase.REFERENCE_POLICY; +import static org.apache.tuscany.sca.invocation.Phase.SERVICE; +import static org.apache.tuscany.sca.invocation.Phase.SERVICE_BINDING; +import static org.apache.tuscany.sca.invocation.Phase.SERVICE_BINDING_OPERATION_SELECTOR; +import static org.apache.tuscany.sca.invocation.Phase.SERVICE_BINDING_POLICY; +import static org.apache.tuscany.sca.invocation.Phase.SERVICE_BINDING_TRANSPORT; +import static org.apache.tuscany.sca.invocation.Phase.SERVICE_BINDING_WIREFORMAT; +import static org.apache.tuscany.sca.invocation.Phase.SERVICE_INTERFACE; +import static org.apache.tuscany.sca.invocation.Phase.SERVICE_POLICY; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collection; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.StringTokenizer; +import java.util.logging.Level; +import java.util.logging.Logger; + +import org.apache.tuscany.sca.core.DefaultExtensionPointRegistry; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.UtilityExtensionPoint; +import org.apache.tuscany.sca.extensibility.ServiceDeclaration; +import org.apache.tuscany.sca.invocation.Phase; +import org.oasisopen.sca.ServiceRuntimeException; + +/** + * @version $Rev$ $Date$ + */ +public class PhaseManager { + private static final Logger log = Logger.getLogger(PhaseManager.class.getName()); + + public static final String STAGE_REFERENCE = "reference"; + public static final String STAGE_REFERENCE_BINDING = "reference.binding"; + public static final String STAGE_SERVICE_BINDING = "service.binding"; + public static final String STAGE_SERVICE = "service"; + public static final String STAGE_IMPLEMENTATION = "implementation"; + + private static final String[] SYSTEM_REFERENCE_PHASES = + {REFERENCE, REFERENCE_POLICY, REFERENCE_INTERFACE, REFERENCE_BINDING}; + + private static final String[] SYSTEM_REFERENCE_BINDING_PHASES = + {REFERENCE_BINDING_WIREFORMAT, REFERENCE_BINDING_POLICY, REFERENCE_BINDING_TRANSPORT}; + + private static final String[] SYSTEM_SERVICE_BINDING_PHASES = + {SERVICE_BINDING_TRANSPORT, SERVICE_BINDING_OPERATION_SELECTOR, SERVICE_BINDING_WIREFORMAT, SERVICE_BINDING_POLICY}; + + private static final String[] SYSTEM_SERVICE_PHASES = + {SERVICE_BINDING, SERVICE_INTERFACE, SERVICE_POLICY, SERVICE}; + + private static final String[] SYSTEM_IMPLEMENTATION_PHASES = {IMPLEMENTATION_POLICY, IMPLEMENTATION}; + + private ExtensionPointRegistry registry; + private String pattern = Phase.class.getName(); + private Map<String, Stage> stages; + private List<String> phases; + + public class Stage { + private String name; + private PhaseSorter<String> sorter = new PhaseSorter<String>(); + private Set<String> firstSet = new HashSet<String>(); + private Set<String> lastSet = new HashSet<String>(); + private List<String> phases = new ArrayList<String>(); + + public Stage(String name) { + super(); + this.name = name; + } + + public String getName() { + return name; + } + + public PhaseSorter<String> getSorter() { + return sorter; + } + + public Set<String> getFirstSet() { + return firstSet; + } + + public Set<String> getLastSet() { + return lastSet; + } + + public List<String> getPhases() { + return phases; + } + + @Override + public String toString() { + return name + phases; + } + } + + /** + * @param registry + */ + public PhaseManager(ExtensionPointRegistry registry) { + super(); + this.registry = registry; + } + + public static PhaseManager getInstance(ExtensionPointRegistry registry) { + UtilityExtensionPoint utilityExtensionPoint = registry.getExtensionPoint(UtilityExtensionPoint.class); + return utilityExtensionPoint.getUtility(PhaseManager.class); + } + + // For unit test purpose + PhaseManager(String pattern) { + super(); + this.pattern = pattern; + this.registry = new DefaultExtensionPointRegistry(); + } + + private List<String> getPhases(String stage) { + Stage s = getStages().get(stage); + return s == null ? null : s.getPhases(); + } + + public List<String> getReferencePhases() { + return getPhases(STAGE_REFERENCE); + } + + public List<String> getServicePhases() { + return getPhases(STAGE_SERVICE); + } + + public List<String> getReferenceBindingPhases() { + return getPhases(STAGE_REFERENCE_BINDING); + } + + public List<String> getServiceBindingPhases() { + return getPhases(STAGE_SERVICE_BINDING); + } + + public List<String> getImplementationPhases() { + return getPhases(STAGE_IMPLEMENTATION); + } + + public synchronized List<String> getAllPhases() { + if (phases == null) { + phases = new ArrayList<String>(); + phases.addAll(getReferencePhases()); + phases.addAll(getReferenceBindingPhases()); + phases.addAll(getServiceBindingPhases()); + phases.addAll(getServicePhases()); + phases.addAll(getImplementationPhases()); + } + return phases; + } + + public synchronized Map<String, Stage> getStages() { + if (stages != null) { + return stages; + } + init(); + + Collection<ServiceDeclaration> services; + try { + services = registry.getServiceDiscovery().getServiceDeclarations(pattern); + } catch (IOException e) { + throw new ServiceRuntimeException(e); + } + + for (ServiceDeclaration d : services) { + if (log.isLoggable(Level.FINE)) { + log.fine(d.getLocation() + ": " + d.getAttributes()); + } + String name = d.getAttributes().get("name"); + if (name == null) { + throw new ServiceRuntimeException("Required attribute 'name' is missing."); + } + String stageName = d.getAttributes().get("stage"); + if (stageName == null) { + throw new ServiceRuntimeException("Required attribute 'stage' is missing."); + } + Stage stage = stages.get(stageName); + if (stage == null) { + throw new ServiceRuntimeException("Invalid stage: " + stageName); + } + PhaseSorter<String> graph = stage.getSorter(); + Set<String> firstSet = stage.getFirstSet(), lastSet = stage.getLastSet(); + + String before = d.getAttributes().get("before"); + String after = d.getAttributes().get("after"); + if (before != null) { + StringTokenizer tokenizer = new StringTokenizer(before); + while (tokenizer.hasMoreTokens()) { + String p = tokenizer.nextToken(); + if (!"*".equals(p)) { + graph.addEdge(name, p); + } else { + firstSet.add(name); + } + } + } + if (after != null) { + StringTokenizer tokenizer = new StringTokenizer(after); + while (tokenizer.hasMoreTokens()) { + String p = tokenizer.nextToken(); + if (!"*".equals(p)) { + graph.addEdge(p, name); + } else { + lastSet.add(name); + } + } + } + graph.addVertext(name); + if(firstSet.size()>1) { + log.warning("More than one phases are declared to be first: "+firstSet); + } + for (String s : firstSet) { + for (String v : new HashSet<String>(graph.getVertices().keySet())) { + if (!firstSet.contains(v)) { + graph.addEdge(s, v); + } + } + } + if(lastSet.size()>1) { + log.warning("More than one phases are declared to be the last: "+lastSet); + } + for (String s : lastSet) { + for (String v : new HashSet<String>(graph.getVertices().keySet())) { + if (!lastSet.contains(v)) { + graph.addEdge(v, s); + } + } + } + + } + + for (Stage s : stages.values()) { + List<String> phases = s.getSorter().topologicalSort(false); + s.getPhases().clear(); + s.getPhases().addAll(phases); + } + if (log.isLoggable(Level.FINE)) { + log.fine("Stages: " + stages); + } + return stages; + } + + private void init() { + stages = new HashMap<String, Stage>(); + + Stage referenceStage = new Stage(STAGE_REFERENCE); + for (int i = 1; i < SYSTEM_REFERENCE_PHASES.length; i++) { + referenceStage.getSorter().addEdge(SYSTEM_REFERENCE_PHASES[i - 1], SYSTEM_REFERENCE_PHASES[i]); + } + referenceStage.getLastSet().add(REFERENCE_BINDING); + stages.put(referenceStage.getName(), referenceStage); + + Stage referenceBindingStage = new Stage(STAGE_REFERENCE_BINDING); + for (int i = 1; i < SYSTEM_REFERENCE_BINDING_PHASES.length; i++) { + referenceBindingStage.getSorter().addEdge(SYSTEM_REFERENCE_BINDING_PHASES[i - 1], SYSTEM_REFERENCE_BINDING_PHASES[i]); + } + stages.put(referenceBindingStage.getName(), referenceBindingStage); + + Stage serviceBindingStage = new Stage(STAGE_SERVICE_BINDING); + for (int i = 1; i < SYSTEM_SERVICE_BINDING_PHASES.length; i++) { + serviceBindingStage.getSorter().addEdge(SYSTEM_SERVICE_BINDING_PHASES[i - 1], SYSTEM_SERVICE_BINDING_PHASES[i]); + } + stages.put(serviceBindingStage.getName(), serviceBindingStage); + + + Stage serviceStage = new Stage(STAGE_SERVICE); + for (int i = 1; i < SYSTEM_SERVICE_PHASES.length; i++) { + serviceStage.getSorter().addEdge(SYSTEM_SERVICE_PHASES[i - 1], SYSTEM_SERVICE_PHASES[i]); + } + stages.put(serviceStage.getName(), serviceStage); + + Stage implementationStage = new Stage(STAGE_IMPLEMENTATION); + for (int i = 1; i < SYSTEM_IMPLEMENTATION_PHASES.length; i++) { + implementationStage.getSorter().addEdge(SYSTEM_IMPLEMENTATION_PHASES[i - 1], + SYSTEM_IMPLEMENTATION_PHASES[i]); + } + implementationStage.getLastSet().add(IMPLEMENTATION); + stages.put(implementationStage.getName(), implementationStage); + } +} |