Examples with PingPacket com.yahoo.fs4.PingPacket used on opensource projects

Example 1 with PingPacket

use of com.yahoo.fs4.PingPacket in project vespa by vespa-engine.

the class FastSearcher method ping.

public static Pong ping(Ping ping, Backend backend, String name) {
    FS4Channel channel = backend.openPingChannel();
    // com.yahoo.prelude.cluster.TrafficNodeMonitor.failed(ErrorMessage)
    try {
        PingPacket pingPacket = new PingPacket();
        try {
            boolean couldSend = channel.sendPacket(pingPacket);
            if (!couldSend) {
                return new Pong(ErrorMessage.createBackendCommunicationError("Could not ping " + name));
            }
        } catch (InvalidChannelException e) {
            return new Pong(ErrorMessage.createBackendCommunicationError("Invalid channel " + name));
        } catch (IllegalStateException e) {
            return new Pong(ErrorMessage.createBackendCommunicationError("Illegal state in FS4: " + e.getMessage()));
        } catch (IOException e) {
            return new Pong(ErrorMessage.createBackendCommunicationError("IO error while sending ping: " + e.getMessage()));
        }
        // We should only get a single packet
        BasicPacket[] packets;
        try {
            packets = channel.receivePackets(ping.getTimeout(), 1);
        } catch (ChannelTimeoutException e) {
            return new Pong(ErrorMessage.createNoAnswerWhenPingingNode("timeout while waiting for fdispatch for " + name));
        } catch (InvalidChannelException e) {
            return new Pong(ErrorMessage.createBackendCommunicationError("Invalid channel for " + name));
        }
        if (packets.length == 0) {
            return new Pong(ErrorMessage.createBackendCommunicationError(name + " got no packets back"));
        }
        try {
            ensureInstanceOf(PongPacket.class, packets[0], name);
        } catch (TimeoutException e) {
            return new Pong(ErrorMessage.createTimeout(e.getMessage()));
        } catch (IOException e) {
            return new Pong(ErrorMessage.createBackendCommunicationError("Unexpected packet class returned after ping: " + e.getMessage()));
        }
        return new Pong((PongPacket) packets[0]);
    } finally {
        if (channel != null) {
            channel.close();
        }
    }
}

Example 2 with PingPacket

use of com.yahoo.fs4.PingPacket in project vespa by vespa-engine.

the class BackendTestCase method requireStatistics.

@Test
public void requireStatistics() throws IOException, InvalidChannelException {
    FS4Channel channel = backend.openPingChannel();
    server.dispatch.channelId = -1;
    server.dispatch.packetData = PONG;
    assertTrue(channel.sendPacket(new PingPacket()));
    try {
        channel.receivePackets(1000, 1);
    } catch (ChannelTimeoutException e) {
        fail("Could not get packets from simulated backend.");
    }
    BackendStatistics stats = backend.getStatistics();
    assertEquals(1, stats.totalConnections());
}

Example 3 with PingPacket

use of com.yahoo.fs4.PingPacket in project vespa by vespa-engine.

the class MockFSChannel method receivePackets.

public BasicPacket[] receivePackets(long timeout, int packetCount) {
    List<BasicPacket> packets = new java.util.ArrayList<>();
    if (lastReceived instanceof QueryPacket) {
        lastQueryPacket = (QueryPacket) lastReceived;
        QueryResultPacket result = QueryResultPacket.create();
        result.setDocstamp(docstamp);
        result.setChannel(0);
        result.setTotalDocumentCount(2);
        result.setOffset(lastQueryPacket.getOffset());
        if (lastQueryPacket.getOffset() == 0 && lastQueryPacket.getLastOffset() >= 1) {
            result.addDocument(new DocumentInfo(DocsumDefinitionTestCase.createGlobalId(123), 2003, 234, 1000));
        }
        if (lastQueryPacket.getOffset() <= 1 && lastQueryPacket.getLastOffset() >= 2) {
            result.addDocument(new DocumentInfo(DocsumDefinitionTestCase.createGlobalId(456), 1855, 234, 1001));
        }
        packets.add(result);
    } else if (lastReceived instanceof GetDocSumsPacket) {
        addDocsums(packets, lastQueryPacket);
    } else if (lastReceived instanceof PingPacket) {
        packets.add(new PongPacket(activeDocuments));
    }
    while (packetCount >= 0 && packets.size() > packetCount) {
        packets.remove(packets.size() - 1);
    }
    return packets.toArray(new BasicPacket[packets.size()]);
}