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.ThreadFactoryBuilder;
  13 import org.opendaylight.controller.md.sal.binding.api.BindingTransactionChain;
  14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.controller.md.sal.binding.api.ReadTransaction;
  16 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  19 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
  20 import org.opendaylight.genius.utils.batching.ActionableResource;
  21 import org.opendaylight.genius.utils.batching.ActionableResourceImpl;
  22 import org.opendaylight.genius.utils.batching.ResourceBatchingManager;
  23 import org.opendaylight.genius.utils.batching.ResourceHandler;
  24 import org.opendaylight.yangtools.yang.binding.DataObject;
  25 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 import java.util.concurrent.BlockingQueue;
  30 import java.util.concurrent.ExecutionException;
  31 import java.util.concurrent.Executors;
  32 import java.util.concurrent.ExecutorService;
  33 import java.util.concurrent.LinkedBlockingQueue;
  34 import java.util.concurrent.TimeoutException;
  35 import java.util.concurrent.ThreadFactory;
  36 import java.util.concurrent.atomic.AtomicInteger;
  37
  38 public class BgpUtil {
  39     private static final Logger LOG = LoggerFactory.getLogger(BgpUtil.class);
  40     private static DataBroker  dataBroker;
  41     private static BindingTransactionChain fibTransact;
  42     public static final int PERIODICITY = 500;
  43     private static AtomicInteger pendingWrTransaction = new AtomicInteger(0);
  44     public static final int BATCH_SIZE = 1000;
  45     public static Integer batchSize;
  46     public static Integer batchInterval;
  47     private static int txChainAttempts = 0;
  48
  49     private static BlockingQueue<ActionableResource> bgpResourcesBufferQ = new LinkedBlockingQueue<>();
  50
  51     // return number of pending Write Transactions with BGP-Util (no read)
  52     public static int getGetPendingWrTransaction() {
  53         return pendingWrTransaction.get();
  54     }
  55
  56     static ThreadFactory namedThreadFactory = new ThreadFactoryBuilder()
  57             .setNameFormat("bgp-util-mdsal-%d").build();
  58
  59     static ExecutorService threadPool = Executors.newFixedThreadPool(1, namedThreadFactory);
  60
  61
  62     static synchronized BindingTransactionChain getTransactionChain() {
  63         return fibTransact;
  64     }
  65
  66     static void registerWithBatchManager(ResourceHandler resourceHandler) {
  67         ResourceBatchingManager resBatchingManager = ResourceBatchingManager.getInstance();
  68         resBatchingManager.registerBatchableResource("BGP-RESOURCES", bgpResourcesBufferQ, resourceHandler);
  69     }
  70
  71     static <T extends DataObject> void update(DataBroker broker, final LogicalDatastoreType datastoreType,
  72                                               final InstanceIdentifier<T> path, final T data) {
  73         ActionableResource actResource = new ActionableResourceImpl(path.toString());
  74         actResource.setAction(ActionableResource.UPDATE);
  75         actResource.setInstanceIdentifier(path);
  76         actResource.setInstance(data);
  77         bgpResourcesBufferQ.add(actResource);
  78     }
  79
  80     public static <T extends DataObject> void write(DataBroker broker, final LogicalDatastoreType datastoreType,
  81                                                     final InstanceIdentifier<T> path, final T data) {
  82         ActionableResource actResource = new ActionableResourceImpl(path.toString());
  83         actResource.setAction(ActionableResource.CREATE);
  84         actResource.setInstanceIdentifier(path);
  85         actResource.setInstance(data);
  86         bgpResourcesBufferQ.add(actResource);
  87     }
  88
  89     static <T extends DataObject> void delete(DataBroker broker, final LogicalDatastoreType datastoreType,
  90                                               final InstanceIdentifier<T> path) {
  91         ActionableResource actResource = new ActionableResourceImpl(path.toString());
  92         actResource.setAction(ActionableResource.DELETE);
  93         actResource.setInstanceIdentifier(path);
  94         actResource.setInstance(null);
  95         bgpResourcesBufferQ.add(actResource);
  96     }
  97
  98
  99     public static <T extends DataObject> Optional<T> read(DataBroker broker, LogicalDatastoreType datastoreType,
 100                                                           InstanceIdentifier<T> path)
 101             throws ExecutionException, InterruptedException, TimeoutException {
 102
 103         ReadTransaction tx = broker.newReadOnlyTransaction();
 104         CheckedFuture<?,?> result = tx.read(datastoreType, path);
 105
 106         try {
 107             return (Optional<T>) result.get();
 108         } catch (Exception e) {
 109             LOG.error("DataStore  read exception {} ", e);
 110         }
 111         return Optional.absent();
 112     }
 113
 114     public static void setBroker(final DataBroker broker) {
 115         BgpUtil.dataBroker = broker;
 116         initTransactionChain();
 117     }
 118
 119     static synchronized void initTransactionChain() {
 120         try {
 121             if (fibTransact != null) {
 122                 fibTransact.close();
 123                 LOG.error("*** TxChain Close, *** Attempts: {}", txChainAttempts);
 124                 fibTransact = null;
 125             }
 126         } catch (Exception ignore) {
 127         }
 128         BgpUtil.fibTransact = dataBroker.createTransactionChain(new BgpUtilTransactionChainListener());
 129         txChainAttempts++;
 130     }
 131
 132     static class BgpUtilTransactionChainListener implements TransactionChainListener {
 133         @Override
 134         public void onTransactionChainFailed(TransactionChain<?, ?> transactionChain, AsyncTransaction<?, ?> asyncTransaction, Throwable throwable) {
 135             LOG.error("*** TxChain Creation Failed *** Attempts: {}", txChainAttempts);
 136             initTransactionChain();
 137         }
 138
 139         @Override
 140         public void onTransactionChainSuccessful(TransactionChain<?, ?> transactionChain) {
 141             LOG.trace("TxChain Creation Success");
 142         }
 143     }
 144
 145     public static DataBroker getBroker() {
 146         return dataBroker;
 147     }
 148 }