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Diffstat (limited to 'branches/sca-java-1.x/modules/binding-erlang-runtime/src/main/java/org/apache/tuscany/sca/binding/erlang/impl/ServiceExecutor.java')
-rw-r--r-- | branches/sca-java-1.x/modules/binding-erlang-runtime/src/main/java/org/apache/tuscany/sca/binding/erlang/impl/ServiceExecutor.java | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/branches/sca-java-1.x/modules/binding-erlang-runtime/src/main/java/org/apache/tuscany/sca/binding/erlang/impl/ServiceExecutor.java b/branches/sca-java-1.x/modules/binding-erlang-runtime/src/main/java/org/apache/tuscany/sca/binding/erlang/impl/ServiceExecutor.java deleted file mode 100644 index 9e292fe3bb..0000000000 --- a/branches/sca-java-1.x/modules/binding-erlang-runtime/src/main/java/org/apache/tuscany/sca/binding/erlang/impl/ServiceExecutor.java +++ /dev/null @@ -1,378 +0,0 @@ -/* - * 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.binding.erlang.impl; - -import java.io.IOException; -import java.lang.annotation.Annotation; -import java.lang.reflect.InvocationTargetException; -import java.lang.reflect.Method; -import java.util.List; -import java.util.Map; -import java.util.logging.Level; -import java.util.logging.Logger; - -import org.apache.tuscany.sca.binding.erlang.ErlangBinding; -import org.apache.tuscany.sca.binding.erlang.impl.types.TypeHelpersProxy; -import org.apache.tuscany.sca.interfacedef.DataType; -import org.apache.tuscany.sca.interfacedef.Operation; -import org.apache.tuscany.sca.interfacedef.java.JavaOperation; -import org.apache.tuscany.sca.runtime.RuntimeComponentService; - -import com.ericsson.otp.erlang.OtpAuthException; -import com.ericsson.otp.erlang.OtpConnection; -import com.ericsson.otp.erlang.OtpErlangAtom; -import com.ericsson.otp.erlang.OtpErlangDecodeException; -import com.ericsson.otp.erlang.OtpErlangExit; -import com.ericsson.otp.erlang.OtpErlangList; -import com.ericsson.otp.erlang.OtpErlangObject; -import com.ericsson.otp.erlang.OtpErlangPid; -import com.ericsson.otp.erlang.OtpErlangRef; -import com.ericsson.otp.erlang.OtpErlangString; -import com.ericsson.otp.erlang.OtpErlangTuple; -import com.ericsson.otp.erlang.OtpMsg; - -/** - * @version $Rev$ $Date$ - */ -public class ServiceExecutor implements Runnable { - - private static final Logger logger = Logger.getLogger(ServiceExecutor.class - .getName()); - - private ErlangNodeElement nodeElement; - private OtpConnection connection; - private Map<String, List<Operation>> groupedOperations; - private String name; - - public ServiceExecutor(OtpConnection connection, - Map<String, List<Operation>> groupedOperations, - ErlangNodeElement nodeElement, String name) { - this.connection = connection; - this.groupedOperations = groupedOperations; - this.nodeElement = nodeElement; - this.name = name; - } - - private void sendMessage(OtpConnection connection, OtpErlangPid pid, - OtpErlangRef ref, OtpErlangAtom head, OtpErlangObject message) - throws IOException { - OtpErlangObject tResult = null; - if (head != null) { - tResult = new OtpErlangTuple( - new OtpErlangObject[] { head, message }); - } else { - tResult = message; - } - OtpErlangObject msg = null; - msg = new OtpErlangTuple(new OtpErlangObject[] { ref, tResult }); - connection.send(pid, msg); - } - - private void handleRpc(OtpMsg msg) { - OtpErlangTuple request = null; - OtpErlangPid senderPid = null; - OtpErlangRef senderRef = null; - try { - OtpErlangTuple call = (OtpErlangTuple) msg.getMsg(); - OtpErlangTuple from = (OtpErlangTuple) call.elementAt(1); - request = (OtpErlangTuple) call.elementAt(2); - senderPid = (OtpErlangPid) from.elementAt(0); - senderRef = (OtpErlangRef) from.elementAt(1); - String module = ((OtpErlangAtom) request.elementAt(1)).atomValue(); - String function = ((OtpErlangAtom) request.elementAt(2)) - .atomValue(); - OtpErlangObject args = request.elementAt(3); - OtpErlangList argsList = null; - // normalize input - if (args instanceof OtpErlangList) { - argsList = (OtpErlangList) args; - } else { - argsList = new OtpErlangList(args); - } - if (!nodeElement.getBinding().getModule().equals(module)) { - // module not found - // TODO: externalize message? - OtpErlangObject errorMsg = MessageHelper.functionUndefMessage( - module, function, argsList, - "Module not found in SCA component."); - sendMessage(connection, senderPid, senderRef, - MessageHelper.ATOM_BADRPC, errorMsg); - } else { - // module found, looking for operation - RuntimeComponentService service = nodeElement.getService(); - ErlangBinding binding = nodeElement.getBinding(); - List<Operation> operations = service.getInterfaceContract() - .getInterface().getOperations(); - Operation operation = null; - for (Operation o : operations) { - if (o.getName().equals(function)) { - operation = o; - break; - } - } - if (operation != null) { - // operation found - List<DataType> iTypes = operation.getInputType() - .getLogical(); - Class<?>[] forClasses = new Class<?>[iTypes.size()]; - for (int i = 0; i < iTypes.size(); i++) { - forClasses[i] = iTypes.get(i).getPhysical(); - } - try { - // invoke operation - Method jmethod = ((JavaOperation) operation) - .getJavaMethod(); - Object result = service.getRuntimeWire(binding, - service.getInterfaceContract()).invoke( - operation, - TypeHelpersProxy.toJavaFromList(argsList, - forClasses, jmethod - .getParameterAnnotations())); - OtpErlangObject response = null; - - // send reply - if (operation.getOutputType() != null - && operation.getOutputType().getPhysical() - .isArray()) { - // output type is array - response = TypeHelpersProxy.toErlangAsResultList( - result, jmethod.getAnnotations()); - } else if (operation.getOutputType() == null) { - // output type is void, create empty reply - Object[] arrArg = new Object[] {}; - response = TypeHelpersProxy.toErlang(arrArg, - new Annotation[0][0]); - } else { - // output type is not void and not array - response = TypeHelpersProxy.toErlang(result, - jmethod.getAnnotations()); - } - sendMessage(connection, senderPid, senderRef, null, - response); - } catch (Exception e) { - if ((e.getClass().equals( - InvocationTargetException.class) && e - .getCause().getClass().equals( - IllegalArgumentException.class)) - || e.getClass().equals( - TypeMismatchException.class)) { - // wrong params - // TODO: externalize message? - OtpErlangObject errorMsg = MessageHelper - .functionUndefMessage(module, function, - argsList, - "Operation name found in SCA component, but parameters types didn't match."); - sendMessage(connection, senderPid, senderRef, - MessageHelper.ATOM_BADRPC, errorMsg); - } else { - // unexpected error - throw e; - } - } - } else { - // operation not found - // TODO: externalize message? - OtpErlangObject errorMsg = MessageHelper - .functionUndefMessage(module, function, argsList, - "Operation name not found in SCA component."); - sendMessage(connection, senderPid, senderRef, - MessageHelper.ATOM_BADRPC, errorMsg); - } - } - } catch (ClassCastException e) { - // invalid request - // TODO: externalize message? - try { - logger - .log( - Level.WARNING, - "On node '" - + nodeElement.getBinding().getNode() - + "' received RPC request which is invalid. Request content is: " - + msg.getMsg()); - } catch (OtpErlangDecodeException e1) { - } - } catch (Exception e) { - // unknown error - try { - sendMessage(connection, senderPid, senderRef, - MessageHelper.ATOM_ERROR, new OtpErlangString( - "Unhandled error while processing request: " - + e.getClass().getCanonicalName() - + ", message: " + e.getMessage())); - } catch (Exception e1) { - // error while sending error message. Can't do anything now - logger.log(Level.WARNING, "Error during sending error message", - e); - } - } - } - - private void handleMsg(OtpMsg msg) { - Operation matchedOperation = null; - Object args[] = null; - OtpErlangPid senderPid = null; - OtpErlangObject msgNoSender = null; - List<Operation> operations = groupedOperations.get(msg - .getRecipientName()); - try { - if (msg.getMsg().getClass().equals(OtpErlangTuple.class) - && (((OtpErlangTuple) msg.getMsg()).elementAt(0)) - .getClass().equals(OtpErlangPid.class)) { - // PID provided by client - senderPid = (OtpErlangPid) ((OtpErlangTuple) msg.getMsg()) - .elementAt(0); - msgNoSender = ((OtpErlangTuple) msg.getMsg()).elementAt(1); - } else { - // PID obtained from jinterface - senderPid = msg.getSenderPid(); - msgNoSender = msg.getMsg(); - } - } catch (Exception e) { - logger.log(Level.WARNING, "Unexpected error", e); - } - - if (operations == null) { - // operation name not found - // TODO: externalize message? - // NOTE: I assume in Erlang sender doesn't get confirmation so - // no message will be send - logger.log(Level.WARNING, "Node '" + name - + "' received message addressed to non exising mbox: " - + msg.getRecipientName()); - } else { - // find proper operation for received parameters - for (Operation operation : operations) { - Method method = ((JavaOperation) operation).getJavaMethod(); - List<DataType> iTypes = operation.getInputType().getLogical(); - Class<?>[] forClasses = new Class<?>[iTypes.size()]; - for (int i = 0; i < iTypes.size(); i++) { - forClasses[i] = iTypes.get(i).getPhysical(); - } - try { - args = TypeHelpersProxy.toJavaAsArgs(msgNoSender, - forClasses, method.getParameterAnnotations()); - matchedOperation = operation; - break; - } catch (Exception e) { - // this exception is expected while processing operation - // version with mismatched arguments - } - } - if (matchedOperation != null) { - // operation found, invoke it - try { - Method jmethod = ((JavaOperation) matchedOperation) - .getJavaMethod(); - Object result = nodeElement.getService().getRuntimeWire( - nodeElement.getBinding()).invoke(matchedOperation, - args); - OtpErlangObject response = null; - - // create and send send reply - if (matchedOperation.getOutputType() != null - && matchedOperation.getOutputType().getPhysical() - .isArray()) { - // result type is array - response = TypeHelpersProxy.toErlangAsResultList( - result, jmethod.getAnnotations()); - } else if (matchedOperation.getOutputType() != null) { - // result type is not array and not void - response = TypeHelpersProxy.toErlang(result, jmethod - .getAnnotations()); - } - if (response != null && senderPid != null) { - connection.send(senderPid, response); - } else if (response != null && senderPid == null) { - // couldn't send reply - sender pid unavailable - // TODO: externalize message? - // TODO: do we need to send this reply? - logger - .log( - Level.WARNING, - "Cannot send reply - Erlang client didn't provide it's PID and couldn't obtain sender PID from jinterface"); - } - } catch (InvocationTargetException e) { - if (e.getCause() != null - && e.getCause().getClass().equals( - IllegalArgumentException.class)) { - // arguments number or type mismatch - try { - // TODO: externalize message? - connection - .send( - senderPid, - new OtpErlangString( - "Operation name found in SCA component, but parameters types didn't match.")); - } catch (IOException e1) { - e1.printStackTrace(); - } - } else { - logger.log(Level.WARNING, "Unexpected error", e); - } - } catch (Exception e) { - logger.log(Level.WARNING, "Unexpected error", e); - } - } else { - // TODO: externalize message? - // NOTE: don't send error message if mapping not found - logger.log(Level.WARNING, "No mapping for such arguments in '" - + msg.getRecipientName() + "' operation in '" + name - + "' node. Recevied arguments: " + msgNoSender); - } - } - } - - public void run() { - try { - // NOTE: there's also a timeout, like in reference bindings - OtpMsg msg = null; - if (nodeElement.getBinding().hasTimeout()) { - msg = connection.receiveMsg(nodeElement.getBinding() - .getTimeout()); - } else { - msg = connection.receiveMsg(); - } - // check if request is message or RPC - if (msg.getRecipientName().equals(MessageHelper.RPC_MBOX) - && !nodeElement.getBinding().isMbox()) { - handleRpc(msg); - } else if (!msg.getRecipientName().equals(MessageHelper.RPC_MBOX) - && nodeElement.getBinding().isMbox()) { - handleMsg(msg); - } else { - // received wrong message type - } - } catch (IOException e) { - // TODO: externalize message? - logger.log(Level.WARNING, "Problem while receiving message", e); - } catch (OtpErlangExit e) { - // TODO: linking? - } catch (OtpAuthException e) { - // TODO: cookies? does this exception occur sometime? - } catch (InterruptedException e) { - // NOTE: timeout will be logged - // TODO: externalize message? - logger.log(Level.WARNING, "Timeout while waiting for request", e); - } finally { - connection.close(); - } - } -} |