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.binding.api.WriteTransaction;
  17 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
  18 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  21 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
  22 import org.opendaylight.genius.utils.batching.ActionableResource;
  23 import org.opendaylight.genius.utils.batching.ActionableResourceImpl;
  24 import org.opendaylight.genius.utils.batching.ResourceBatchingManager;
  25 import org.opendaylight.genius.utils.batching.ResourceHandler;
  26 import org.opendaylight.yangtools.yang.binding.DataObject;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 import java.util.concurrent.BlockingQueue;
  32 import java.util.concurrent.ExecutionException;
  33 import java.util.concurrent.Executors;
  34 import java.util.concurrent.ExecutorService;
  35 import java.util.concurrent.LinkedBlockingQueue;
  36 import java.util.concurrent.TimeoutException;
  37 import java.util.concurrent.ThreadFactory;
  38 import java.util.concurrent.atomic.AtomicInteger;
  39
  40 public class BgpUtil {
  41     private static final Logger LOG = LoggerFactory.getLogger(BgpUtil.class);
  42     private static DataBroker  dataBroker;
  43     private static BindingTransactionChain fibTransact;
  44     public static final int PERIODICITY = 500;
  45     private static AtomicInteger pendingWrTransaction = new AtomicInteger(0);
  46     public static final int BATCH_SIZE = 1000;
  47     public static Integer batchSize;
  48     public static Integer batchInterval;
  49     private static int txChainAttempts = 0;
  50
  51     private static BlockingQueue<ActionableResource> bgpResourcesBufferQ = new LinkedBlockingQueue<>();
  52
  53     // return number of pending Write Transactions with BGP-Util (no read)
  54     public static int getGetPendingWrTransaction() {
  55         return pendingWrTransaction.get();
  56     }
  57
  58     static ThreadFactory namedThreadFactory = new ThreadFactoryBuilder()
  59             .setNameFormat("bgp-util-mdsal-%d").build();
  60
  61     static ExecutorService threadPool = Executors.newFixedThreadPool(1, namedThreadFactory);
  62
  63
  64     static synchronized BindingTransactionChain getTransactionChain() {
  65         return fibTransact;
  66     }
  67
  68     static void registerWithBatchManager(ResourceHandler resourceHandler) {
  69         ResourceBatchingManager resBatchingManager = ResourceBatchingManager.getInstance();
  70         resBatchingManager.registerBatchableResource("BGP-RESOURCES", bgpResourcesBufferQ, resourceHandler);
  71     }
  72
  73     static <T extends DataObject> void update(DataBroker broker, final LogicalDatastoreType datastoreType,
  74                                               final InstanceIdentifier<T> path, final T data) {
  75         ActionableResource actResource = new ActionableResourceImpl(path.toString());
  76         actResource.setAction(ActionableResource.UPDATE);
  77         actResource.setInstanceIdentifier(path);
  78         actResource.setInstance(data);
  79         bgpResourcesBufferQ.add(actResource);
  80     }
  81
  82     public static <T extends DataObject> void write(DataBroker broker, final LogicalDatastoreType datastoreType,
  83                                                     final InstanceIdentifier<T> path, final T data) {
  84         ActionableResource actResource = new ActionableResourceImpl(path.toString());
  85         actResource.setAction(ActionableResource.CREATE);
  86         actResource.setInstanceIdentifier(path);
  87         actResource.setInstance(data);
  88         bgpResourcesBufferQ.add(actResource);
  89     }
  90
  91     static <T extends DataObject> void delete(DataBroker broker, final LogicalDatastoreType datastoreType,
  92                                               final InstanceIdentifier<T> path) {
  93         ActionableResource actResource = new ActionableResourceImpl(path.toString());
  94         actResource.setAction(ActionableResource.DELETE);
  95         actResource.setInstanceIdentifier(path);
  96         actResource.setInstance(null);
  97         bgpResourcesBufferQ.add(actResource);
  98     }
  99
 100
 101     public static <T extends DataObject> Optional<T> read(DataBroker broker, LogicalDatastoreType datastoreType,
 102                                                           InstanceIdentifier<T> path)
 103             throws ExecutionException, InterruptedException, TimeoutException {
 104
 105         ReadTransaction tx = broker.newReadOnlyTransaction();
 106         CheckedFuture<?,?> result = tx.read(datastoreType, path);
 107
 108         try {
 109             return (Optional<T>) result.get();
 110         } catch (Exception e) {
 111             LOG.error("DataStore  read exception {} ", e);
 112         }
 113         return Optional.absent();
 114     }
 115
 116     public static <T extends DataObject> void syncWrite(DataBroker broker, LogicalDatastoreType datastoreType,
 117                                                         InstanceIdentifier<T> path, T data) {
 118         WriteTransaction tx = broker.newWriteOnlyTransaction();
 119         tx.put(datastoreType, path, data, true);
 120         CheckedFuture<Void, TransactionCommitFailedException> futures = tx.submit();
 121         try {
 122             futures.get();
 123         } catch (InterruptedException | ExecutionException e) {
 124             LOG.error("Error writing to datastore (path, data) : ({}, {})", path, data);
 125             throw new RuntimeException(e.getMessage());
 126         }
 127     }
 128
 129     public static void setBroker(final DataBroker broker) {
 130         BgpUtil.dataBroker = broker;
 131         initTransactionChain();
 132     }
 133
 134     static synchronized void initTransactionChain() {
 135         try {
 136             if (fibTransact != null) {
 137                 fibTransact.close();
 138                 LOG.error("*** TxChain Close, *** Attempts: {}", txChainAttempts);
 139                 fibTransact = null;
 140             }
 141         } catch (Exception ignore) {
 142         }
 143         BgpUtil.fibTransact = dataBroker.createTransactionChain(new BgpUtilTransactionChainListener());
 144         txChainAttempts++;
 145     }
 146
 147     static class BgpUtilTransactionChainListener implements TransactionChainListener {
 148         @Override
 149         public void onTransactionChainFailed(TransactionChain<?, ?> transactionChain, AsyncTransaction<?, ?> asyncTransaction, Throwable throwable) {
 150             LOG.error("*** TxChain Creation Failed *** Attempts: {}", txChainAttempts);
 151             initTransactionChain();
 152         }
 153
 154         @Override
 155         public void onTransactionChainSuccessful(TransactionChain<?, ?> transactionChain) {
 156             LOG.trace("TxChain Creation Success");
 157         }
 158     }
 159
 160     public static DataBroker getBroker() {
 161         return dataBroker;
 162     }
 163 }