netconf/mdsal-netconf-connector/src/main/java/org/opendaylight/netconf/mdsal/connector/MdsalNetconfOperationServiceFactory.java

   1 /*
   2  * Copyright (c) 2013 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.netconf.mdsal.connector;
  10
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.io.CharStreams;
  13 import java.io.IOException;
  14 import java.io.InputStream;
  15 import java.io.InputStreamReader;
  16 import java.nio.charset.StandardCharsets;
  17 import java.util.HashSet;
  18 import java.util.Optional;
  19 import java.util.Set;
  20 import java.util.concurrent.ExecutionException;
  21 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
  22 import org.opendaylight.controller.md.sal.dom.api.DOMRpcService;
  23 import org.opendaylight.controller.sal.core.api.model.SchemaService;
  24 import org.opendaylight.netconf.api.capability.Capability;
  25 import org.opendaylight.netconf.api.capability.YangModuleCapability;
  26 import org.opendaylight.netconf.api.monitoring.CapabilityListener;
  27 import org.opendaylight.netconf.mapping.api.NetconfOperationServiceFactory;
  28 import org.opendaylight.netconf.mapping.api.NetconfOperationServiceFactoryListener;
  29 import org.opendaylight.yangtools.yang.model.api.Module;
  30 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  31 import org.opendaylight.yangtools.yang.model.repo.api.RevisionSourceIdentifier;
  32 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
  33 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  34 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceProvider;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 public class MdsalNetconfOperationServiceFactory implements NetconfOperationServiceFactory, AutoCloseable {
  39
  40     private static final Logger LOG = LoggerFactory.getLogger(MdsalNetconfOperationServiceFactory.class);
  41
  42     private final DOMDataBroker dataBroker;
  43     private final DOMRpcService rpcService;
  44
  45     private final CurrentSchemaContext currentSchemaContext;
  46     private final SchemaSourceProvider<YangTextSchemaSource> rootSchemaSourceProviderDependency;
  47     private final NetconfOperationServiceFactoryListener netconfOperationServiceFactoryListener;
  48
  49     public MdsalNetconfOperationServiceFactory(
  50             final SchemaService schemaService,
  51             final SchemaSourceProvider<YangTextSchemaSource> rootSchemaSourceProviderDependency,
  52             final NetconfOperationServiceFactoryListener netconfOperationServiceFactoryListener,
  53             final DOMDataBroker dataBroker,
  54             final DOMRpcService rpcService) {
  55
  56         this.dataBroker = dataBroker;
  57         this.rpcService = rpcService;
  58
  59         this.rootSchemaSourceProviderDependency = rootSchemaSourceProviderDependency;
  60         this.currentSchemaContext = new CurrentSchemaContext(Preconditions.checkNotNull(schemaService),
  61                 rootSchemaSourceProviderDependency);
  62         this.netconfOperationServiceFactoryListener = netconfOperationServiceFactoryListener;
  63         this.netconfOperationServiceFactoryListener.onAddNetconfOperationServiceFactory(this);
  64     }
  65
  66     @Override
  67     public MdsalNetconfOperationService createService(final String netconfSessionIdForReporting) {
  68         Preconditions.checkState(dataBroker != null, "MD-SAL provider not yet initialized");
  69         return new MdsalNetconfOperationService(currentSchemaContext, netconfSessionIdForReporting, dataBroker,
  70                 rpcService);
  71     }
  72
  73     @SuppressWarnings("checkstyle:IllegalCatch")
  74     @Override
  75     public void close() {
  76         try {
  77             currentSchemaContext.close();
  78             if (netconfOperationServiceFactoryListener != null) {
  79                 netconfOperationServiceFactoryListener.onRemoveNetconfOperationServiceFactory(this);
  80             }
  81         } catch (Exception e) {
  82             LOG.error("Failed to close resources correctly - ignore", e);
  83         }
  84     }
  85
  86     @Override
  87     public Set<Capability> getCapabilities() {
  88         return transformCapabilities(currentSchemaContext.getCurrentContext(), rootSchemaSourceProviderDependency);
  89     }
  90
  91     static Set<Capability> transformCapabilities(
  92             final SchemaContext currentContext,
  93             final SchemaSourceProvider<YangTextSchemaSource> rootSchemaSourceProviderDependency) {
  94         final Set<Capability> capabilities = new HashSet<>();
  95
  96         // Added by netconf-impl by default
  97         // capabilities.add(new BasicCapability("urn:ietf:params:netconf:capability:candidate:1.0"));
  98
  99         final Set<Module> modules = currentContext.getModules();
 100         for (final Module module : modules) {
 101             Optional<YangModuleCapability> cap = moduleToCapability(module, rootSchemaSourceProviderDependency);
 102             if (cap.isPresent()) {
 103                 capabilities.add(cap.get());
 104             }
 105             for (final Module submodule : module.getSubmodules()) {
 106                 cap = moduleToCapability(submodule, rootSchemaSourceProviderDependency);
 107                 if (cap.isPresent()) {
 108                     capabilities.add(cap.get());
 109                 }
 110             }
 111         }
 112
 113         return capabilities;
 114     }
 115
 116     private static Optional<YangModuleCapability> moduleToCapability(
 117             final Module module, final SchemaSourceProvider<YangTextSchemaSource> rootSchemaSourceProviderDependency) {
 118
 119         final SourceIdentifier moduleSourceIdentifier = RevisionSourceIdentifier.create(module.getName(),
 120                 module.getRevision());
 121
 122         InputStream sourceStream = null;
 123         String source;
 124         try {
 125             sourceStream = rootSchemaSourceProviderDependency.getSource(moduleSourceIdentifier).get().openStream();
 126             source = CharStreams.toString(new InputStreamReader(sourceStream, StandardCharsets.UTF_8));
 127         } catch (ExecutionException | InterruptedException | IOException e) {
 128             LOG.warn("Ignoring source for module {}. Unable to read content", moduleSourceIdentifier, e);
 129             source = null;
 130         }
 131
 132         try {
 133             if (sourceStream != null) {
 134                 sourceStream.close();
 135             }
 136         } catch (IOException e) {
 137             LOG.warn("Error closing yang source stream {}. Ignoring", moduleSourceIdentifier, e);
 138         }
 139
 140         if (source != null) {
 141             return Optional.of(new YangModuleCapability(module, source));
 142         }
 143
 144         LOG.warn("Missing source for module {}. This module will not be available from netconf server",
 145             moduleSourceIdentifier);
 146         return Optional.empty();
 147     }
 148
 149     @Override
 150     public AutoCloseable registerCapabilityListener(final CapabilityListener listener) {
 151         return currentSchemaContext.registerCapabilityListener(listener);
 152     }
 153 }