Examples with NoBrokersAvailableException com.twitter.finagle.NoBrokersAvailableException used on opensource projects

Example 1 with NoBrokersAvailableException

use of com.twitter.finagle.NoBrokersAvailableException in project distributedlog by twitter.

the class LocalRoutingService method getHost.

@Override
public synchronized SocketAddress getHost(String key, RoutingContext rContext) throws NoBrokersAvailableException {
    LinkedHashSet<SocketAddress> addresses = localAddresses.get(key);
    SocketAddress candidate = null;
    if (null != addresses) {
        for (SocketAddress host : addresses) {
            if (rContext.isTriedHost(host) && !allowRetrySameHost) {
                continue;
            } else {
                candidate = host;
                break;
            }
        }
    }
    if (null != candidate) {
        return candidate;
    }
    throw new NoBrokersAvailableException("No host available");
}

Example 2 with NoBrokersAvailableException

use of com.twitter.finagle.NoBrokersAvailableException in project distributedlog by twitter.

the class DistributedLogClientImpl method doSend.

/**
 * Send the stream operation by routing service, excluding previous address if it is not null.
 *
 * @param op
 *          stream operation.
 * @param previousAddr
 *          previous tried address.
 */
private void doSend(final StreamOp op, final SocketAddress previousAddr) {
    if (null != previousAddr) {
        op.routingContext.addTriedHost(previousAddr, StatusCode.WRITE_EXCEPTION);
    }
    // Get host first
    SocketAddress address = ownershipCache.getOwner(op.stream);
    if (null == address || op.routingContext.isTriedHost(address)) {
        // pickup host by hashing
        try {
            address = routingService.getHost(op.stream, op.routingContext);
        } catch (NoBrokersAvailableException nbae) {
            op.fail(null, nbae);
            return;
        }
    }
    op.send(address);
}

Example 3 with NoBrokersAvailableException

use of com.twitter.finagle.NoBrokersAvailableException in project distributedlog by twitter.

the class TestConsistentHashRoutingService method testBlackoutHost.

@Test(timeout = 60000)
public void testBlackoutHost() throws Exception {
    TestName name = new TestName();
    RoutingService routingService = ConsistentHashRoutingService.newBuilder().serverSet(new NameServerSet(name)).resolveFromName(true).numReplicas(997).blackoutSeconds(2).build();
    InetSocketAddress inetAddress = new InetSocketAddress("127.0.0.1", 3181);
    Address address = Addresses.newInetAddress(inetAddress);
    List<Address> addresses = new ArrayList<Address>(1);
    addresses.add(address);
    name.changeAddrs(addresses);
    routingService.startService();
    RoutingService.RoutingContext routingContext = RoutingService.RoutingContext.of(new DefaultRegionResolver());
    String streamName = "test-blackout-host";
    assertEquals(inetAddress, routingService.getHost(streamName, routingContext));
    routingService.removeHost(inetAddress, new ChannelWriteException(new IOException("test exception")));
    try {
        routingService.getHost(streamName, routingContext);
        fail("Should fail to get host since no brokers are available");
    } catch (NoBrokersAvailableException nbae) {
    // expected
    }
    TimeUnit.SECONDS.sleep(3);
    assertEquals(inetAddress, routingService.getHost(streamName, routingContext));
    routingService.stopService();
}

Example 4 with NoBrokersAvailableException

use of com.twitter.finagle.NoBrokersAvailableException in project distributedlog by twitter.

the class TestRegionsRoutingService method testGetHost.

@Test(timeout = 60000)
public void testGetHost() throws Exception {
    int numRoutingServices = 3;
    RoutingService.Builder[] routingServiceBuilders = new RoutingService.Builder[numRoutingServices];
    Map<SocketAddress, String> regionMap = new HashMap<SocketAddress, String>();
    for (int i = 0; i < numRoutingServices; i++) {
        String finagleNameStr = "inet!127.0.0.1:" + (3181 + i);
        routingServiceBuilders[i] = RoutingUtils.buildRoutingService(finagleNameStr);
        SocketAddress address = new InetSocketAddress("127.0.0.1", 3181 + i);
        regionMap.put(address, "region-" + i);
    }
    RegionsRoutingService regionsRoutingService = RegionsRoutingService.newBuilder().resolver(new DefaultRegionResolver(regionMap)).routingServiceBuilders(routingServiceBuilders).build();
    regionsRoutingService.startService();
    RoutingService.RoutingContext routingContext = RoutingService.RoutingContext.of(new DefaultRegionResolver()).addTriedHost(new InetSocketAddress("127.0.0.1", 3183), StatusCode.WRITE_EXCEPTION);
    assertEquals(new InetSocketAddress("127.0.0.1", 3181), regionsRoutingService.getHost("any", routingContext));
    routingContext = RoutingService.RoutingContext.of(new DefaultRegionResolver()).addTriedHost(new InetSocketAddress("127.0.0.1", 3181), StatusCode.WRITE_EXCEPTION);
    assertEquals(new InetSocketAddress("127.0.0.1", 3182), regionsRoutingService.getHost("any", routingContext));
    // add 3182 to routing context as tried host
    routingContext.addTriedHost(new InetSocketAddress("127.0.0.1", 3182), StatusCode.WRITE_EXCEPTION);
    assertEquals(new InetSocketAddress("127.0.0.1", 3183), regionsRoutingService.getHost("any", routingContext));
    // add 3183 to routing context as tried host
    routingContext.addTriedHost(new InetSocketAddress("127.0.0.1", 3183), StatusCode.WRITE_EXCEPTION);
    try {
        regionsRoutingService.getHost("any", routingContext);
        fail("Should fail to get host since all regions are tried.");
    } catch (NoBrokersAvailableException nbae) {
    // expected
    }
}

Example 5 with NoBrokersAvailableException

use of com.twitter.finagle.NoBrokersAvailableException in project distributedlog by twitter.

the class ServerSetRoutingService method getHost.

@Override
public SocketAddress getHost(String key, RoutingContext rContext) throws NoBrokersAvailableException {
    SocketAddress address = null;
    synchronized (hostSet) {
        if (0 != hostList.size()) {
            int hashCode = hasher.hashUnencodedChars(key).asInt();
            int hostId = signSafeMod(hashCode, hostList.size());
            address = hostList.get(hostId);
            if (rContext.isTriedHost(address)) {
                ArrayList<SocketAddress> newList = new ArrayList<SocketAddress>(hostList);
                newList.remove(hostId);
                // pickup a new host by rehashing it.
                hostId = signSafeMod(hashCode, newList.size());
                address = newList.get(hostId);
                int i = hostId;
                while (rContext.isTriedHost(address)) {
                    i = (i + 1) % newList.size();
                    if (i == hostId) {
                        address = null;
                        break;
                    }
                    address = newList.get(i);
                }
            }
        }
    }
    if (null == address) {
        throw new NoBrokersAvailableException("No host is available.");
    }
    return address;
}