opendaylight/netconf/config-netconf-connector/src/main/java/org/opendaylight/controller/netconf/confignetconfconnector/operations/editconfig/EditConfigXmlParser.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.controller.netconf.confignetconfconnector.operations.editconfig;
  10
  11 import com.google.common.annotations.VisibleForTesting;
  12 import com.google.common.base.Optional;
  13 import com.google.common.base.Preconditions;
  14 import com.google.common.collect.Multimap;
  15 import org.opendaylight.controller.config.api.ServiceReferenceReadableRegistry;
  16 import org.opendaylight.controller.config.util.ConfigRegistryClient;
  17 import org.opendaylight.controller.netconf.api.NetconfDocumentedException;
  18 import org.opendaylight.controller.netconf.confignetconfconnector.mapping.config.Config;
  19 import org.opendaylight.controller.netconf.confignetconfconnector.mapping.config.ModuleElementDefinition;
  20 import org.opendaylight.controller.netconf.confignetconfconnector.mapping.config.ModuleElementResolved;
  21 import org.opendaylight.controller.netconf.confignetconfconnector.mapping.config.ServiceRegistryWrapper;
  22 import org.opendaylight.controller.netconf.confignetconfconnector.mapping.config.Services;
  23 import org.opendaylight.controller.netconf.confignetconfconnector.operations.Datastore;
  24 import org.opendaylight.controller.netconf.confignetconfconnector.transactions.TransactionProvider;
  25 import org.opendaylight.controller.netconf.util.xml.XmlElement;
  26 import org.opendaylight.controller.netconf.util.xml.XmlNetconfConstants;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 import java.util.Arrays;
  31 import java.util.Map;
  32
  33 public class EditConfigXmlParser {
  34
  35     private static final Logger logger = LoggerFactory.getLogger(EditConfigXmlParser.class);
  36
  37     public static final String EDIT_CONFIG = "edit-config";
  38     public static final String DEFAULT_OPERATION_KEY = "default-operation";
  39     static final String ERROR_OPTION_KEY = "error-option";
  40     static final String DEFAULT_ERROR_OPTION = "stop-on-error";
  41     static final String TARGET_KEY = "target";
  42     static final String TEST_OPTION_KEY = "test-option";
  43
  44     public EditConfigXmlParser() {
  45     }
  46
  47     EditConfigXmlParser.EditConfigExecution fromXml(final XmlElement xml, final Config cfgMapping,
  48                                                     TransactionProvider transactionProvider, ConfigRegistryClient configRegistryClient)
  49             throws NetconfDocumentedException {
  50
  51         //TODO remove transactionProvider and CfgRegistry from parameters, accept only service ref store
  52
  53         EditStrategyType editStrategyType = EditStrategyType.getDefaultStrategy();
  54
  55         xml.checkName(EditConfigXmlParser.EDIT_CONFIG);
  56         xml.checkNamespace(XmlNetconfConstants.URN_IETF_PARAMS_XML_NS_NETCONF_BASE_1_0);
  57
  58         XmlElement targetElement = xml.getOnlyChildElementWithSameNamespace(EditConfigXmlParser.TARGET_KEY);
  59         XmlElement targetChildNode = targetElement.getOnlyChildElementWithSameNamespace();
  60         String datastoreValue = targetChildNode.getName();
  61         Datastore targetDatastore = Datastore.valueOf(datastoreValue);
  62         logger.debug("Setting {} to '{}'", EditConfigXmlParser.TARGET_KEY, targetDatastore);
  63
  64         // check target
  65         Preconditions.checkArgument(targetDatastore == Datastore.candidate,
  66                 "Only %s datastore supported for edit config but was: %s", Datastore.candidate, targetDatastore);
  67
  68         // Test option
  69         TestOption testOption;
  70         Optional<XmlElement> testOptionElementOpt = xml
  71                 .getOnlyChildElementWithSameNamespaceOptionally(EditConfigXmlParser.TEST_OPTION_KEY);
  72         if (testOptionElementOpt.isPresent()) {
  73             String testOptionValue = testOptionElementOpt.get().getTextContent();
  74             testOption = EditConfigXmlParser.TestOption.getFromXmlName(testOptionValue);
  75         } else {
  76             testOption = EditConfigXmlParser.TestOption.getDefault();
  77         }
  78         logger.debug("Setting {} to '{}'", EditConfigXmlParser.TEST_OPTION_KEY, testOption);
  79
  80         // Error option
  81         Optional<XmlElement> errorOptionElement = xml
  82                 .getOnlyChildElementWithSameNamespaceOptionally(EditConfigXmlParser.ERROR_OPTION_KEY);
  83         if (errorOptionElement.isPresent()) {
  84             String errorOptionParsed = errorOptionElement.get().getTextContent();
  85             if (false == errorOptionParsed.equals(EditConfigXmlParser.DEFAULT_ERROR_OPTION))
  86                 throw new UnsupportedOperationException("Only " + EditConfigXmlParser.DEFAULT_ERROR_OPTION
  87                         + " supported for " + EditConfigXmlParser.ERROR_OPTION_KEY + ", was " + errorOptionParsed);
  88         }
  89
  90         // Default op
  91         Optional<XmlElement> defaultContent = xml
  92                 .getOnlyChildElementWithSameNamespaceOptionally(EditConfigXmlParser.DEFAULT_OPERATION_KEY);
  93         if (defaultContent.isPresent()) {
  94             String mergeStrategyString = defaultContent.get().getTextContent();
  95             logger.trace("Setting merge strategy to {}", mergeStrategyString);
  96             editStrategyType = EditStrategyType.valueOf(mergeStrategyString);
  97         }
  98
  99         XmlElement configElement = xml.getOnlyChildElementWithSameNamespace(XmlNetconfConstants.CONFIG_KEY);
 100
 101         return new EditConfigXmlParser.EditConfigExecution(cfgMapping, configElement, testOption, editStrategyType);
 102     }
 103
 104     @VisibleForTesting
 105     static enum TestOption {
 106         testOnly, set, testThenSet;
 107
 108         static TestOption getFromXmlName(String testOptionXmlName) {
 109             switch (testOptionXmlName) {
 110             case "test-only":
 111                 return testOnly;
 112             case "test-then-set":
 113                 return testThenSet;
 114             case "set":
 115                 return set;
 116             default:
 117                 throw new IllegalArgumentException("Unsupported test option " + testOptionXmlName + " supported: "
 118                         + Arrays.toString(TestOption.values()));
 119             }
 120         }
 121
 122         public static TestOption getDefault() {
 123             return testThenSet;
 124         }
 125
 126     }
 127
 128     @VisibleForTesting
 129     static class EditConfigExecution {
 130
 131         private final TestOption testOption;
 132         private final EditStrategyType defaultEditStrategyType;
 133         private final Services services;
 134         private final Config configResolver;
 135         private final XmlElement configElement;
 136
 137         EditConfigExecution(Config configResolver, XmlElement configElement, TestOption testOption, EditStrategyType defaultStrategy) {
 138             Config.checkUnrecognisedChildren(configElement);
 139             this.configResolver = configResolver;
 140             this.configElement = configElement;
 141             this.services = configResolver.fromXmlServices(configElement);
 142             this.testOption = testOption;
 143             this.defaultEditStrategyType = defaultStrategy;
 144         }
 145
 146         boolean shouldTest() {
 147             return testOption == TestOption.testOnly || testOption == TestOption.testThenSet;
 148         }
 149
 150         boolean shouldSet() {
 151             return testOption == TestOption.set || testOption == TestOption.testThenSet;
 152         }
 153
 154         Map<String, Multimap<String, ModuleElementResolved>> getResolvedXmlElements(ServiceReferenceReadableRegistry serviceRegistry) {
 155             return configResolver.fromXmlModulesResolved(configElement, defaultEditStrategyType, getServiceRegistryWrapper(serviceRegistry));
 156         }
 157
 158         ServiceRegistryWrapper getServiceRegistryWrapper(ServiceReferenceReadableRegistry serviceRegistry) {
 159             // TODO cache service registry
 160             return new ServiceRegistryWrapper(serviceRegistry);
 161         }
 162
 163         Map<String, Multimap<String,ModuleElementDefinition>> getModulesDefinition(ServiceReferenceReadableRegistry serviceRegistry) {
 164             return configResolver.fromXmlModulesMap(configElement, defaultEditStrategyType, getServiceRegistryWrapper(serviceRegistry));
 165         }
 166
 167         EditStrategyType getDefaultStrategy() {
 168             return defaultEditStrategyType;
 169         }
 170
 171         Services getServices() {
 172             return services;
 173         }
 174     }
 175 }