vpnservice/bgpmanager/bgpmanager-impl/src/main/java/org/opendaylight/netvirt/bgpmanager/BgpUtil.java

   1 /*
   2  * Copyright (c) 2015 Ericsson India Global Services Pvt Ltd. 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 package org.opendaylight.netvirt.bgpmanager;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.util.concurrent.CheckedFuture;
  12 import com.google.common.util.concurrent.FutureCallback;
  13 import com.google.common.util.concurrent.Futures;
  14 import com.google.common.util.concurrent.ThreadFactoryBuilder;
  15 import org.opendaylight.controller.md.sal.binding.api.*;
  16 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  17 import org.opendaylight.controller.md.sal.common.api.data.*;
  18 import org.opendaylight.genius.utils.batching.ActionableResource;
  19 import org.opendaylight.genius.utils.batching.ActionableResourceImpl;
  20 import org.opendaylight.genius.utils.batching.ResourceBatchingManager;
  21 import org.opendaylight.genius.utils.batching.ResourceHandler;
  22 import org.opendaylight.yangtools.yang.binding.DataObject;
  23 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 import java.util.concurrent.*;
  28 import java.util.concurrent.atomic.AtomicInteger;
  29
  30 public class BgpUtil {
  31     private static final Logger LOG = LoggerFactory.getLogger(BgpUtil.class);
  32     private static DataBroker  dataBroker;
  33     private static BindingTransactionChain fibTransact;
  34     public static final int PERIODICITY = 500;
  35     private static AtomicInteger pendingWrTransaction = new AtomicInteger(0);
  36     public static final int BATCH_SIZE = 1000;
  37     public static Integer batchSize;
  38     public static Integer batchInterval;
  39     private static int txChainAttempts = 0;
  40
  41     private static BlockingQueue<ActionableResource> bgpResourcesBufferQ = new LinkedBlockingQueue<>();
  42
  43     // return number of pending Write Transactions with BGP-Util (no read)
  44     public static int getGetPendingWrTransaction() {
  45         return pendingWrTransaction.get();
  46     }
  47
  48     static ThreadFactory namedThreadFactory = new ThreadFactoryBuilder()
  49             .setNameFormat("bgp-util-mdsal-%d").build();
  50
  51     static ExecutorService threadPool = Executors.newFixedThreadPool(1, namedThreadFactory);
  52
  53
  54     static synchronized BindingTransactionChain getTransactionChain() {
  55         return fibTransact;
  56     }
  57
  58     static void registerWithBatchManager(ResourceHandler resourceHandler) {
  59         ResourceBatchingManager resBatchingManager = ResourceBatchingManager.getInstance();
  60         resBatchingManager.registerBatchableResource("BGP-RESOURCES", bgpResourcesBufferQ, resourceHandler);
  61     }
  62
  63     static <T extends DataObject> void update(DataBroker broker, final LogicalDatastoreType datastoreType,
  64                                               final InstanceIdentifier<T> path, final T data) {
  65         ActionableResource actResource = new ActionableResourceImpl(path.toString());
  66         actResource.setAction(ActionableResource.UPDATE);
  67         actResource.setInstanceIdentifier(path);
  68         actResource.setInstance(data);
  69         bgpResourcesBufferQ.add(actResource);
  70     }
  71
  72     public static <T extends DataObject> void write(DataBroker broker, final LogicalDatastoreType datastoreType,
  73                                                     final InstanceIdentifier<T> path, final T data) {
  74         ActionableResource actResource = new ActionableResourceImpl(path.toString());
  75         actResource.setAction(ActionableResource.CREATE);
  76         actResource.setInstanceIdentifier(path);
  77         actResource.setInstance(data);
  78         bgpResourcesBufferQ.add(actResource);
  79     }
  80
  81     static <T extends DataObject> void delete(DataBroker broker, final LogicalDatastoreType datastoreType,
  82                                               final InstanceIdentifier<T> path) {
  83         ActionableResource actResource = new ActionableResourceImpl(path.toString());
  84         actResource.setAction(ActionableResource.DELETE);
  85         actResource.setInstanceIdentifier(path);
  86         actResource.setInstance(null);
  87         bgpResourcesBufferQ.add(actResource);
  88     }
  89
  90
  91     public static <T extends DataObject> Optional<T> read(DataBroker broker, LogicalDatastoreType datastoreType,
  92                                                           InstanceIdentifier<T> path)
  93             throws ExecutionException, InterruptedException, TimeoutException {
  94
  95         ReadTransaction tx = broker.newReadOnlyTransaction();
  96         CheckedFuture<?,?> result = tx.read(datastoreType, path);
  97
  98         try {
  99             return (Optional<T>) result.get();
 100         } catch (Exception e) {
 101             LOG.error("DataStore  read exception {} ", e);
 102         }
 103         return Optional.absent();
 104     }
 105
 106     public static void setBroker(final DataBroker broker) {
 107         BgpUtil.dataBroker = broker;
 108         initTransactionChain();
 109     }
 110
 111     static synchronized void initTransactionChain() {
 112         try {
 113             if (fibTransact != null) {
 114                 fibTransact.close();
 115                 LOG.error("*** TxChain Close, *** Attempts: {}", txChainAttempts);
 116                 fibTransact = null;
 117             }
 118         } catch (Exception ignore) {
 119         }
 120         BgpUtil.fibTransact = dataBroker.createTransactionChain(new BgpUtilTransactionChainListener());
 121         txChainAttempts++;
 122     }
 123
 124     static class BgpUtilTransactionChainListener implements TransactionChainListener {
 125         @Override
 126         public void onTransactionChainFailed(TransactionChain<?, ?> transactionChain, AsyncTransaction<?, ?> asyncTransaction, Throwable throwable) {
 127             LOG.error("*** TxChain Creation Failed *** Attempts: {}", txChainAttempts);
 128             initTransactionChain();
 129         }
 130
 131         @Override
 132         public void onTransactionChainSuccessful(TransactionChain<?, ?> transactionChain) {
 133             LOG.trace("TxChain Creation Success");
 134         }
 135     }
 136
 137     public static DataBroker getBroker() {
 138         return dataBroker;
 139     }
 140 }