Examples with ConnectException java.net.ConnectException used on opensource projects

Example 11 with ConnectException

use of java.net.ConnectException in project pinot by linkedin.

the class NettyTCPClientConnection method connect.

/**
   * Open a connection
   */
@Override
public boolean connect() {
    try {
        checkTransition(State.CONNECTED);
        //Connect synchronously. At the end of this line, _channel should have been set
        TimerContext t = MetricsHelper.startTimer();
        ChannelFuture f = _bootstrap.connect(_server.getHostname(), _server.getPort()).sync();
        /**
       * Waiting for future alone does not guarantee that _channel is set. _channel is set
       * only when the channelActive() async callback runs. So we should also wait for it.
       */
        f.get();
        _channelSet.await();
        t.stop();
        _connState = State.CONNECTED;
        _clientMetric.addConnectStats(t.getLatencyMs());
        return true;
    } catch (Exception ie) {
        if (ie instanceof ConnectException && ie.getMessage() != null && ie.getMessage().startsWith("Connection refused")) {
            // Most common case when a server is down. Don't print the entire stack and fill the logs.
            LOGGER.error("Could not connect to server {}:{} connId:{}", _server, ie.getMessage(), getConnId());
        } else {
            LOGGER.error("Got exception when connecting to server {} connId {}", _server, ie, getConnId());
        }
    }
    return false;
}

Example 12 with ConnectException

use of java.net.ConnectException in project k-9 by k9mail.

the class ImapConnection method connect.

private Socket connect() throws GeneralSecurityException, MessagingException, IOException {
    Exception connectException = null;
    InetAddress[] inetAddresses = InetAddress.getAllByName(settings.getHost());
    for (InetAddress address : inetAddresses) {
        try {
            return connectToAddress(address);
        } catch (IOException e) {
            Log.w(LOG_TAG, "Could not connect to " + address, e);
            connectException = e;
        }
    }
    throw new MessagingException("Cannot connect to host", connectException);
}

Example 13 with ConnectException

use of java.net.ConnectException in project hadoop by apache.

the class TestTimelineClient method mockEntityClientResponse.

public static ClientResponse mockEntityClientResponse(TimelineWriter spyTimelineWriter, ClientResponse.Status status, boolean hasError, boolean hasRuntimeError) {
    ClientResponse response = mock(ClientResponse.class);
    if (hasRuntimeError) {
        doThrow(new ClientHandlerException(new ConnectException())).when(spyTimelineWriter).doPostingObject(any(TimelineEntities.class), any(String.class));
        return response;
    }
    doReturn(response).when(spyTimelineWriter).doPostingObject(any(TimelineEntities.class), any(String.class));
    when(response.getStatusInfo()).thenReturn(status);
    TimelinePutResponse.TimelinePutError error = new TimelinePutResponse.TimelinePutError();
    error.setEntityId("test entity id");
    error.setEntityType("test entity type");
    error.setErrorCode(TimelinePutResponse.TimelinePutError.IO_EXCEPTION);
    TimelinePutResponse putResponse = new TimelinePutResponse();
    if (hasError) {
        putResponse.addError(error);
    }
    when(response.getEntity(TimelinePutResponse.class)).thenReturn(putResponse);
    return response;
}

Example 14 with ConnectException

use of java.net.ConnectException in project hadoop by apache.

the class HistoryFileManager method tryCreatingHistoryDirs.

/**
   * Returns TRUE if the history dirs were created, FALSE if they could not
   * be created because the FileSystem is not reachable or in safe mode and
   * throws and exception otherwise.
   */
@VisibleForTesting
boolean tryCreatingHistoryDirs(boolean logWait) throws IOException {
    boolean succeeded = true;
    String doneDirPrefix = JobHistoryUtils.getConfiguredHistoryServerDoneDirPrefix(conf);
    try {
        doneDirPrefixPath = FileContext.getFileContext(conf).makeQualified(new Path(doneDirPrefix));
        doneDirFc = FileContext.getFileContext(doneDirPrefixPath.toUri(), conf);
        doneDirFc.setUMask(JobHistoryUtils.HISTORY_DONE_DIR_UMASK);
        mkdir(doneDirFc, doneDirPrefixPath, new FsPermission(JobHistoryUtils.HISTORY_DONE_DIR_PERMISSION));
    } catch (ConnectException ex) {
        if (logWait) {
            LOG.info("Waiting for FileSystem at " + doneDirPrefixPath.toUri().getAuthority() + "to be available");
        }
        succeeded = false;
    } catch (IOException e) {
        if (isNameNodeStillNotStarted(e)) {
            succeeded = false;
            if (logWait) {
                LOG.info("Waiting for FileSystem at " + doneDirPrefixPath.toUri().getAuthority() + "to be out of safe mode");
            }
        } else {
            throw new YarnRuntimeException("Error creating done directory: [" + doneDirPrefixPath + "]", e);
        }
    }
    if (succeeded) {
        String intermediateDoneDirPrefix = JobHistoryUtils.getConfiguredHistoryIntermediateDoneDirPrefix(conf);
        try {
            intermediateDoneDirPath = FileContext.getFileContext(conf).makeQualified(new Path(intermediateDoneDirPrefix));
            intermediateDoneDirFc = FileContext.getFileContext(intermediateDoneDirPath.toUri(), conf);
            mkdir(intermediateDoneDirFc, intermediateDoneDirPath, new FsPermission(JobHistoryUtils.HISTORY_INTERMEDIATE_DONE_DIR_PERMISSIONS.toShort()));
        } catch (ConnectException ex) {
            succeeded = false;
            if (logWait) {
                LOG.info("Waiting for FileSystem at " + intermediateDoneDirPath.toUri().getAuthority() + "to be available");
            }
        } catch (IOException e) {
            if (isNameNodeStillNotStarted(e)) {
                succeeded = false;
                if (logWait) {
                    LOG.info("Waiting for FileSystem at " + intermediateDoneDirPath.toUri().getAuthority() + "to be out of safe mode");
                }
            } else {
                throw new YarnRuntimeException("Error creating intermediate done directory: [" + intermediateDoneDirPath + "]", e);
            }
        }
    }
    return succeeded;
}

Example 15 with ConnectException

use of java.net.ConnectException in project hbase by apache.

the class ServerManager method checkForRSznode.

/**
   * Check for an odd state, where we think an RS is up but it is not. Do it on OPEN.
   * This is only case where the check makes sense.
   *
   * <p>We are checking for instance of HBASE-9593 where a RS registered but died before it put
   * up its znode in zk. In this case, the RS made it into the list of online servers but it
   * is not actually UP. We do the check here where there is an evident problem rather
   * than do some crazy footwork where we'd have master check zk after a RS had reported
   * for duty with provisional state followed by a confirmed state; that'd be a mess.
   * Real fix is HBASE-17733.
   */
private void checkForRSznode(final ServerName serverName, final ServiceException se) {
    if (se.getCause() == null)
        return;
    Throwable t = se.getCause();
    if (t instanceof ConnectException) {
    // If this, proceed to do cleanup.
    } else {
        // Look for FailedServerException
        if (!(t instanceof IOException))
            return;
        if (t.getCause() == null)
            return;
        if (!(t.getCause() instanceof FailedServerException))
            return;
    // Ok, found FailedServerException -- continue.
    }
    if (!isServerOnline(serverName))
        return;
    // We think this server is online. Check it has a znode up. Currently, a RS
    // registers an ephereral znode in zk. If not present, something is up. Maybe
    // HBASE-9593 where RS crashed AFTER reportForDuty but BEFORE it put up an ephemeral
    // znode.
    List<String> servers = null;
    try {
        servers = getRegionServersInZK(this.master.getZooKeeper());
    } catch (KeeperException ke) {
        LOG.warn("Failed to list regionservers", ke);
    // ZK is malfunctioning, don't hang here
    }
    boolean found = false;
    if (servers != null) {
        for (String serverNameAsStr : servers) {
            ServerName sn = ServerName.valueOf(serverNameAsStr);
            if (sn.equals(serverName)) {
                // Found a server up in zk.
                found = true;
                break;
            }
        }
    }
    if (!found) {
        LOG.warn("Online server " + serverName.toString() + " has no corresponding " + "ephemeral znode (Did it die before registering in zk?); " + "calling expire to clean it up!");
        expireServer(serverName);
    }
}