--- /dev/null
+/*
+ * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.netconf.impl.osgi;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Maps;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.NavigableMap;
+import java.util.Set;
+import java.util.TreeMap;
+import org.opendaylight.netconf.api.DocumentedException;
+import org.opendaylight.netconf.api.monitoring.NetconfMonitoringService;
+import org.opendaylight.netconf.api.xml.XmlUtil;
+import org.opendaylight.netconf.impl.NetconfServerSession;
+import org.opendaylight.netconf.impl.mapping.operations.DefaultCloseSession;
+import org.opendaylight.netconf.impl.mapping.operations.DefaultNetconfOperation;
+import org.opendaylight.netconf.impl.mapping.operations.DefaultStartExi;
+import org.opendaylight.netconf.impl.mapping.operations.DefaultStopExi;
+import org.opendaylight.netconf.mapping.api.HandlingPriority;
+import org.opendaylight.netconf.mapping.api.NetconfOperation;
+import org.opendaylight.netconf.mapping.api.NetconfOperationChainedExecution;
+import org.opendaylight.netconf.mapping.api.NetconfOperationService;
+import org.opendaylight.netconf.mapping.api.SessionAwareNetconfOperation;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.w3c.dom.Document;
+
+public class NetconfOperationRouterImpl implements NetconfOperationRouter {
+
+ private static final Logger LOG = LoggerFactory.getLogger(NetconfOperationRouterImpl.class);
+ private final NetconfOperationService netconfOperationServiceSnapshot;
+ private final Collection<NetconfOperation> allNetconfOperations;
+
+ public NetconfOperationRouterImpl(final NetconfOperationService netconfOperationServiceSnapshot,
+ final NetconfMonitoringService netconfMonitoringService, final String sessionId) {
+ this.netconfOperationServiceSnapshot = Preconditions.checkNotNull(netconfOperationServiceSnapshot);
+
+ final Set<NetconfOperation> ops = new HashSet<>();
+ ops.add(new DefaultCloseSession(sessionId, this));
+ ops.add(new DefaultStartExi(sessionId));
+ ops.add(new DefaultStopExi(sessionId));
+
+ ops.addAll(netconfOperationServiceSnapshot.getNetconfOperations());
+
+ allNetconfOperations = ImmutableSet.copyOf(ops);
+ }
+
+ @SuppressWarnings("checkstyle:IllegalCatch")
+ @Override
+ public Document onNetconfMessage(final Document message, final NetconfServerSession session) throws
+ DocumentedException {
+ Preconditions.checkNotNull(allNetconfOperations, "Operation router was not initialized properly");
+
+ final NetconfOperationExecution netconfOperationExecution;
+ try {
+ netconfOperationExecution = getNetconfOperationWithHighestPriority(message, session);
+ } catch (IllegalArgumentException | IllegalStateException e) {
+ final String messageAsString = XmlUtil.toString(message);
+ LOG.warn("Unable to handle rpc {} on session {}", messageAsString, session, e);
+
+ final DocumentedException.ErrorTag tag;
+ if (e instanceof IllegalArgumentException) {
+ tag = DocumentedException.ErrorTag.OPERATION_NOT_SUPPORTED;
+ } else {
+ tag = DocumentedException.ErrorTag.OPERATION_FAILED;
+ }
+
+ throw new DocumentedException(
+ String.format("Unable to handle rpc %s on session %s", messageAsString, session),
+ e, DocumentedException.ErrorType.APPLICATION,
+ tag, DocumentedException.ErrorSeverity.ERROR,
+ Collections.singletonMap(tag.toString(), e.getMessage()));
+ } catch (final RuntimeException e) {
+ throw handleUnexpectedEx("Unexpected exception during netconf operation sort", e);
+ }
+
+ try {
+ return executeOperationWithHighestPriority(message, netconfOperationExecution);
+ } catch (final RuntimeException e) {
+ throw handleUnexpectedEx("Unexpected exception during netconf operation execution", e);
+ }
+ }
+
+ @Override
+ public void close() {
+ netconfOperationServiceSnapshot.close();
+ }
+
+ private static DocumentedException handleUnexpectedEx(final String message, final Exception exception) {
+ LOG.error("{}", message, exception);
+ return new DocumentedException("Unexpected error",
+ DocumentedException.ErrorType.APPLICATION,
+ DocumentedException.ErrorTag.OPERATION_FAILED,
+ DocumentedException.ErrorSeverity.ERROR,
+ Collections.singletonMap(DocumentedException.ErrorSeverity.ERROR.toString(), exception.toString()));
+ }
+
+ private static Document executeOperationWithHighestPriority(final Document message,
+ final NetconfOperationExecution netconfOperationExecution) throws DocumentedException {
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("Forwarding netconf message {} to {}", XmlUtil.toString(message), netconfOperationExecution
+ .netconfOperation);
+ }
+
+ return netconfOperationExecution.execute(message);
+ }
+
+ private NetconfOperationExecution getNetconfOperationWithHighestPriority(
+ final Document message, final NetconfServerSession session) throws DocumentedException {
+
+ final NavigableMap<HandlingPriority, NetconfOperation> sortedByPriority =
+ getSortedNetconfOperationsWithCanHandle(
+ message, session);
+
+ if (sortedByPriority.isEmpty()) {
+ throw new IllegalArgumentException(String.format("No %s available to handle message %s",
+ NetconfOperation.class.getName(), XmlUtil.toString(message)));
+ }
+
+ return NetconfOperationExecution.createExecutionChain(sortedByPriority, sortedByPriority.lastKey());
+ }
+
+ private TreeMap<HandlingPriority, NetconfOperation> getSortedNetconfOperationsWithCanHandle(
+ final Document message, final NetconfServerSession session) throws DocumentedException {
+ final TreeMap<HandlingPriority, NetconfOperation> sortedPriority = Maps.newTreeMap();
+
+ for (final NetconfOperation netconfOperation : allNetconfOperations) {
+ final HandlingPriority handlingPriority = netconfOperation.canHandle(message);
+ if (netconfOperation instanceof DefaultNetconfOperation) {
+ ((DefaultNetconfOperation) netconfOperation).setNetconfSession(session);
+ }
+ if (netconfOperation instanceof SessionAwareNetconfOperation) {
+ ((SessionAwareNetconfOperation) netconfOperation).setSession(session);
+ }
+ if (!handlingPriority.equals(HandlingPriority.CANNOT_HANDLE)) {
+
+ Preconditions.checkState(!sortedPriority.containsKey(handlingPriority),
+ "Multiple %s available to handle message %s with priority %s, %s and %s",
+ NetconfOperation.class.getName(), message, handlingPriority, netconfOperation, sortedPriority
+ .get(handlingPriority));
+ sortedPriority.put(handlingPriority, netconfOperation);
+ }
+ }
+ return sortedPriority;
+ }
+
+ private static final class NetconfOperationExecution implements NetconfOperationChainedExecution {
+ private final NetconfOperation netconfOperation;
+ private final NetconfOperationChainedExecution subsequentExecution;
+
+ private NetconfOperationExecution(final NetconfOperation netconfOperation,
+ final NetconfOperationChainedExecution subsequentExecution) {
+ this.netconfOperation = netconfOperation;
+ this.subsequentExecution = subsequentExecution;
+ }
+
+ @Override
+ public boolean isExecutionTermination() {
+ return false;
+ }
+
+ @Override
+ public Document execute(final Document message) throws DocumentedException {
+ return netconfOperation.handle(message, subsequentExecution);
+ }
+
+ public static NetconfOperationExecution createExecutionChain(
+ final NavigableMap<HandlingPriority, NetconfOperation> sortedByPriority,
+ final HandlingPriority handlingPriority) {
+ final NetconfOperation netconfOperation = sortedByPriority.get(handlingPriority);
+ final HandlingPriority subsequentHandlingPriority = sortedByPriority.lowerKey(handlingPriority);
+
+ NetconfOperationChainedExecution subsequentExecution = null;
+
+ if (subsequentHandlingPriority != null) {
+ subsequentExecution = createExecutionChain(sortedByPriority, subsequentHandlingPriority);
+ } else {
+ subsequentExecution = EXECUTION_TERMINATION_POINT;
+ }
+
+ return new NetconfOperationExecution(netconfOperation, subsequentExecution);
+ }
+ }
+
+ @Override
+ public String toString() {
+ return "NetconfOperationRouterImpl{" + "netconfOperationServiceSnapshot=" + netconfOperationServiceSnapshot
+ + '}';
+ }
+}
Code Review / transportpce.git / blobdiff