restconf/sal-rest-connector/src/main/java/org/opendaylight/restconf/RestConnectorProvider.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.restconf;
  10
  11 import com.google.common.base.Preconditions;
  12 import java.util.Collection;
  13 import java.util.Collections;
  14 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
  15 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
  16 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  17 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
  18 import org.opendaylight.controller.md.sal.dom.api.DOMMountPointService;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMRpcService;
  20 import org.opendaylight.controller.sal.core.api.Broker.ProviderSession;
  21 import org.opendaylight.controller.sal.core.api.Provider;
  22 import org.opendaylight.controller.sal.core.api.model.SchemaService;
  23 import org.opendaylight.netconf.sal.rest.api.RestConnector;
  24 import org.opendaylight.netconf.sal.restconf.impl.RestconfDocumentedException;
  25 import org.opendaylight.restconf.common.wrapper.services.Draft15ServicesWrapperImpl;
  26 import org.opendaylight.restconf.handlers.DOMDataBrokerHandler;
  27 import org.opendaylight.restconf.handlers.DOMMountPointServiceHandler;
  28 import org.opendaylight.restconf.handlers.RpcServiceHandler;
  29 import org.opendaylight.restconf.handlers.SchemaContextHandler;
  30 import org.opendaylight.restconf.handlers.TransactionChainHandler;
  31 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  32 import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 /**
  37  * Provider for restconf draft15.
  38  *
  39  */
  40 public class RestConnectorProvider implements Provider, RestConnector, AutoCloseable {
  41
  42     private static final Logger LOG = LoggerFactory.getLogger(RestConnectorProvider.class);
  43
  44     public static final TransactionChainListener transactionListener = new TransactionChainListener() {
  45         @Override
  46         public void onTransactionChainFailed(final TransactionChain<?, ?> chain,
  47                 final AsyncTransaction<?, ?> transaction, final Throwable cause) {
  48             LOG.warn("TransactionChain({}) {} FAILED!", chain, transaction.getIdentifier(), cause);
  49             resetTransactionChainForAdapaters(chain);
  50             throw new RestconfDocumentedException("TransactionChain(" + chain + ") not committed correctly", cause);
  51         }
  52
  53         @Override
  54         public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
  55             LOG.trace("TransactionChain({}) {} SUCCESSFUL", chain);
  56         }
  57     };
  58
  59     private ListenerRegistration<SchemaContextListener> listenerRegistration;
  60     private static TransactionChainHandler transactionChainHandler;
  61     private static DOMDataBroker dataBroker;
  62
  63     @Override
  64     public void onSessionInitiated(final ProviderSession session) {
  65         final SchemaService schemaService = Preconditions.checkNotNull(session.getService(SchemaService.class));
  66
  67         final Draft15ServicesWrapperImpl wrapperServices = Draft15ServicesWrapperImpl.getInstance();
  68
  69         final SchemaContextHandler schemaCtxHandler = new SchemaContextHandler();
  70         this.listenerRegistration = schemaService.registerSchemaContextListener(schemaCtxHandler);
  71
  72         final DOMMountPointServiceHandler domMountPointServiceHandler = new DOMMountPointServiceHandler(
  73                 session.getService(DOMMountPointService.class));
  74
  75         RestConnectorProvider.dataBroker = session.getService(DOMDataBroker.class);
  76         final DOMDataBrokerHandler brokerHandler = new DOMDataBrokerHandler(RestConnectorProvider.dataBroker);
  77
  78         RestConnectorProvider.transactionChainHandler = new TransactionChainHandler(RestConnectorProvider.dataBroker
  79                 .createTransactionChain(RestConnectorProvider.transactionListener));
  80
  81         final DOMRpcService rpcService = session.getService(DOMRpcService.class);
  82         final RpcServiceHandler rpcServiceHandler = new RpcServiceHandler(rpcService);
  83
  84         wrapperServices.setHandlers(schemaCtxHandler, domMountPointServiceHandler,
  85                 RestConnectorProvider.transactionChainHandler, brokerHandler, rpcServiceHandler);
  86     }
  87
  88     /**
  89      * After {@link TransactionChain} failed, this updates {@link TransactionChainHandler} with new transaction chain.
  90      *
  91      * @param chain
  92      *            - old {@link TransactionChain}
  93      */
  94     public static void resetTransactionChainForAdapaters(final TransactionChain<?, ?> chain) {
  95         LOG.trace("Resetting TransactionChain({})", chain);
  96         chain.close();
  97         RestConnectorProvider.transactionChainHandler.update(
  98                 Preconditions.checkNotNull(RestConnectorProvider.dataBroker).createTransactionChain(
  99                         RestConnectorProvider.transactionListener)
 100         );
 101     }
 102
 103     @Override
 104     public Collection<ProviderFunctionality> getProviderFunctionality() {
 105         return Collections.emptySet();
 106     }
 107
 108     @Override
 109     public void close() throws Exception {
 110         // close registration
 111         if (this.listenerRegistration != null) {
 112             this.listenerRegistration.close();
 113         }
 114
 115         // close transaction chain
 116         if (RestConnectorProvider.transactionChainHandler != null) {
 117             RestConnectorProvider.transactionChainHandler.get().close();
 118         }
 119     }
 120 }