diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/policy-logging/src/main/java/org/apache/tuscany/sca/policy/logging/jdk/JDKLoggingPolicyInterceptor.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0.1-RC1/modules/policy-logging/src/main/java/org/apache/tuscany/sca/policy/logging/jdk/JDKLoggingPolicyInterceptor.java | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/policy-logging/src/main/java/org/apache/tuscany/sca/policy/logging/jdk/JDKLoggingPolicyInterceptor.java b/sca-java-2.x/tags/2.0.1-RC1/modules/policy-logging/src/main/java/org/apache/tuscany/sca/policy/logging/jdk/JDKLoggingPolicyInterceptor.java new file mode 100644 index 0000000000..b6c83a804a --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/policy-logging/src/main/java/org/apache/tuscany/sca/policy/logging/jdk/JDKLoggingPolicyInterceptor.java @@ -0,0 +1,171 @@ +/* + * 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.policy.logging.jdk; + +import java.util.List; +import java.util.logging.ConsoleHandler; +import java.util.logging.Handler; +import java.util.logging.Level; +import java.util.logging.Logger; + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.assembly.Component; +import org.apache.tuscany.sca.assembly.Endpoint; +import org.apache.tuscany.sca.assembly.EndpointReference; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.invocation.Message; +import org.apache.tuscany.sca.invocation.PhasedInterceptor; +import org.apache.tuscany.sca.policy.PolicySubject; + +/** + * Policy handler to handle PolicySet related to Logging with the QName + * {http://tuscany.apache.org/xmlns/sca/1.1/impl/java}LoggingPolicy + * + * @version $Rev$ $Date$ + */ +public class JDKLoggingPolicyInterceptor implements PhasedInterceptor { + public static final String loggingPolicy = "JDKLoggingPolicy"; + public static final QName policySetQName = new QName(JDKLoggingPolicy.SCA11_TUSCANY_NS, loggingPolicy); + private Logger logger = null; + + private Invoker next; + private Operation operation; + private List<JDKLoggingPolicy> policies; + private PolicySubject subject; + private String context; + private String phase; + + public JDKLoggingPolicyInterceptor(PolicySubject subject, + String context, + Operation operation, + List<JDKLoggingPolicy> policies, + String phase) { + super(); + this.operation = operation; + this.policies = policies; + this.subject = subject; + this.phase = phase; + this.context = getContext(); + init(); + } + + private String getContext() { + if (subject instanceof Endpoint) { + Endpoint endpoint = (Endpoint)subject; + return endpoint.getURI(); + } else if (subject instanceof EndpointReference) { + EndpointReference endpointReference = (EndpointReference)subject; + return endpointReference.getURI(); + } else if (subject instanceof Component) { + Component component = (Component)subject; + return component.getURI(); + } + return null; + } + + private void init() { + JDKLoggingPolicy policy = policies.get(0); + logger = Logger.getLogger(policy.getLoggerName()); + logger.setLevel(policy.getLogLevel()); + logger.setUseParentHandlers(policy.isUseParentHandlers()); + + boolean found = false; + for (Handler handler : logger.getHandlers()) { + if (handler instanceof ConsoleHandler) { + found = true; + break; + } + } + + if (!found) { + ConsoleHandler consoleHandler = new ConsoleHandler(); + consoleHandler.setLevel(Level.ALL); + logger.addHandler(consoleHandler); + } + + if (logger.isLoggable(Level.FINE)) { + logger.logp(Level.FINE, context, "", "Intents: {0}", subject.getRequiredIntents()); + logger.logp(Level.FINE, context, "", "PolicySets: {0}", subject.getPolicySets()); + } + } + + public Message invoke(Message msg) { + if (logger == null) { + return getNext().invoke(msg); + } + logger.logp(Level.INFO, context, "", "Invoking operation - " + operation.getName()); + Object msgBody = msg.getBody(); + if (msgBody instanceof Object[]) { + + if (logger.isLoggable(Level.FINE)) { + StringBuffer sb = new StringBuffer(); + if (msgBody == null) { + sb.append(""); + } else { + Object[] args = (Object[])msgBody; + for (int i = 0; i < args.length; i++) { + sb.append(args[i]); + if (i != args.length - 1) { + sb.append(", "); + } + } + } + + Object[] logParams = new Object[] {operation.getName(), sb.toString()}; + logger.logp(Level.FINE, context, "", "Invoking operation {0} with arguments {1}", logParams); + } + } + + Message responseMsg = null; + try { + responseMsg = getNext().invoke(msg); + return responseMsg; + } catch (RuntimeException e) { + logger.logp(Level.SEVERE, context, "", "Exception thrown from operation - " + operation.getName(), e); + throw e; + } finally { + if (responseMsg != null) { + logger.logp(Level.INFO, context, "", "Returned from operation - " + operation.getName()); + if (logger.isLoggable(Level.FINE)) { + Object[] logParams = new Object[] {operation.getName(), responseMsg.getBody()}; + logger.logp(Level.FINE, + context, + "", + "Returning from operation {0} with return value {1}", + logParams); + } + } + } + } + + public Invoker getNext() { + return next; + } + + public void setNext(Invoker next) { + this.next = next; + } + + public String getPhase() { + return phase; + } + +} |