opendaylight/netconf/config-netconf-connector/src/main/java/org/opendaylight/controller/netconf/confignetconfconnector/transactions/TransactionProvider.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.transactions;
  10
  11 import com.google.common.base.Optional;
  12 import com.google.common.base.Preconditions;
  13 import java.util.ArrayList;
  14 import java.util.List;
  15 import java.util.Set;
  16 import javax.management.InstanceNotFoundException;
  17 import javax.management.ObjectName;
  18 import org.opendaylight.controller.config.api.ConflictingVersionException;
  19 import org.opendaylight.controller.config.api.ValidationException;
  20 import org.opendaylight.controller.config.api.jmx.CommitStatus;
  21 import org.opendaylight.controller.config.util.ConfigRegistryClient;
  22 import org.opendaylight.controller.config.util.ConfigTransactionClient;
  23 import org.opendaylight.controller.netconf.api.NetconfDocumentedException;
  24 import org.opendaylight.controller.netconf.confignetconfconnector.exception.NoTransactionFoundException;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 public class TransactionProvider implements AutoCloseable {
  29     private static final Logger LOG = LoggerFactory.getLogger(TransactionProvider.class);
  30
  31     private final ConfigRegistryClient configRegistryClient;
  32
  33     private final String netconfSessionIdForReporting;
  34     private ObjectName transaction;
  35     private final List<ObjectName> allOpenedTransactions = new ArrayList<>();
  36     private static final String  NO_TRANSACTION_FOUND_FOR_SESSION = "No transaction found for session ";
  37
  38     public TransactionProvider(ConfigRegistryClient configRegistryClient, String netconfSessionIdForReporting) {
  39         this.configRegistryClient = configRegistryClient;
  40         this.netconfSessionIdForReporting = netconfSessionIdForReporting;
  41     }
  42
  43     @Override
  44     public synchronized void close() {
  45         for (ObjectName tx : allOpenedTransactions) {
  46             try {
  47                 if (isStillOpenTransaction(tx)) {
  48                     configRegistryClient.getConfigTransactionClient(tx).abortConfig();
  49                 }
  50             } catch (Exception e) {
  51                 LOG.debug("Ignoring exception while closing transaction {}", tx, e);
  52             }
  53         }
  54         allOpenedTransactions.clear();
  55     }
  56
  57     public synchronized Optional<ObjectName> getTransaction() {
  58
  59         if (transaction == null){
  60             return Optional.absent();
  61         }
  62
  63         // Transaction was already closed somehow
  64         if (!isStillOpenTransaction(transaction)) {
  65             LOG.warn("Fixing illegal state: transaction {} was closed in {}", transaction,
  66                     netconfSessionIdForReporting);
  67             transaction = null;
  68             return Optional.absent();
  69         }
  70         return Optional.of(transaction);
  71     }
  72
  73     private boolean isStillOpenTransaction(ObjectName transaction) {
  74         return configRegistryClient.getOpenConfigs().contains(transaction);
  75     }
  76
  77     public synchronized ObjectName getOrCreateTransaction() {
  78         Optional<ObjectName> ta = getTransaction();
  79
  80         if (ta.isPresent())
  81             return ta.get();
  82         transaction = configRegistryClient.beginConfig();
  83         allOpenedTransactions.add(transaction);
  84         return transaction;
  85     }
  86
  87     /**
  88      * Used for editConfig test option
  89      */
  90     public synchronized ObjectName getTestTransaction() {
  91         ObjectName testTx = configRegistryClient.beginConfig();
  92         allOpenedTransactions.add(testTx);
  93         return testTx;
  94     }
  95
  96     /**
  97      * Commit and notification send must be atomic
  98      */
  99     public synchronized CommitStatus commitTransaction() throws ValidationException, ConflictingVersionException, NoTransactionFoundException {
 100         if (!getTransaction().isPresent()){
 101             throw new NoTransactionFoundException("No transaction found for session " + netconfSessionIdForReporting,
 102                     NetconfDocumentedException.ErrorType.application,
 103                     NetconfDocumentedException.ErrorTag.operation_failed,
 104                     NetconfDocumentedException.ErrorSeverity.error);
 105         }
 106         final Optional<ObjectName> maybeTaON = getTransaction();
 107         ObjectName taON = maybeTaON.get();
 108         try {
 109             CommitStatus status = configRegistryClient.commitConfig(taON);
 110             // clean up
 111             allOpenedTransactions.remove(transaction);
 112             transaction = null;
 113             return status;
 114         } catch (ValidationException validationException) {
 115             // no clean up: user can reconfigure and recover this transaction
 116             LOG.warn("Transaction {} failed on {}", taON, validationException.toString());
 117             throw validationException;
 118         } catch (ConflictingVersionException e) {
 119             LOG.error("Exception while commit of {}, aborting transaction", taON, e);
 120             // clean up
 121             abortTransaction();
 122             throw e;
 123         }
 124     }
 125
 126     public synchronized void abortTransaction() {
 127         LOG.debug("Aborting current transaction");
 128         Optional<ObjectName> taON = getTransaction();
 129         Preconditions.checkState(taON.isPresent(), NO_TRANSACTION_FOUND_FOR_SESSION + netconfSessionIdForReporting);
 130
 131         ConfigTransactionClient transactionClient = configRegistryClient.getConfigTransactionClient(taON.get());
 132         transactionClient.abortConfig();
 133         allOpenedTransactions.remove(transaction);
 134         transaction = null;
 135     }
 136
 137     public synchronized void abortTestTransaction(ObjectName testTx) {
 138         LOG.debug("Aborting transaction {}", testTx);
 139         ConfigTransactionClient transactionClient = configRegistryClient.getConfigTransactionClient(testTx);
 140         allOpenedTransactions.remove(testTx);
 141         transactionClient.abortConfig();
 142     }
 143
 144     public void validateTransaction() throws ValidationException {
 145         Optional<ObjectName> taON = getTransaction();
 146         Preconditions.checkState(taON.isPresent(), NO_TRANSACTION_FOUND_FOR_SESSION + netconfSessionIdForReporting);
 147
 148         ConfigTransactionClient transactionClient = configRegistryClient.getConfigTransactionClient(taON.get());
 149         transactionClient.validateConfig();
 150     }
 151
 152     public void validateTestTransaction(ObjectName taON) throws ValidationException {
 153         ConfigTransactionClient transactionClient = configRegistryClient.getConfigTransactionClient(taON);
 154         transactionClient.validateConfig();
 155     }
 156
 157     public void wipeTestTransaction(ObjectName taON) {
 158         wipeInternal(taON, true);
 159     }
 160
 161     /**
 162      * Wiping means removing all module instances keeping the transaction open + service references.
 163      */
 164     synchronized void wipeInternal(ObjectName taON, boolean isTest) {
 165         ConfigTransactionClient transactionClient = configRegistryClient.getConfigTransactionClient(taON);
 166
 167         Set<ObjectName> lookupConfigBeans = transactionClient.lookupConfigBeans();
 168         int i = lookupConfigBeans.size();
 169         for (ObjectName instance : lookupConfigBeans) {
 170             try {
 171                 transactionClient.destroyModule(instance);
 172             } catch (InstanceNotFoundException e) {
 173                 if (isTest){
 174                     LOG.debug("Unable to clean configuration in transactiom {}", taON, e);
 175                 } else {
 176                     LOG.warn("Unable to clean configuration in transactiom {}", taON, e);
 177                 }
 178
 179                 throw new IllegalStateException("Unable to clean configuration in transactiom " + taON, e);
 180             }
 181         }
 182         LOG.debug("Transaction {} wiped clean of {} config beans", taON, i);
 183
 184         transactionClient.removeAllServiceReferences();
 185         LOG.debug("Transaction {} wiped clean of all service references", taON);
 186     }
 187
 188     public void wipeTransaction() {
 189         Optional<ObjectName> taON = getTransaction();
 190         Preconditions.checkState(taON.isPresent(), NO_TRANSACTION_FOUND_FOR_SESSION + netconfSessionIdForReporting);
 191         wipeInternal(taON.get(), false);
 192     }
 193
 194 }