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Example 1 with ReadMarshallable

use of net.openhft.chronicle.wire.ReadMarshallable in project cassandra by apache.

the class Dump method dump.

public static void dump(List<String> arguments, String rollCycle, boolean follow) {
    StringBuilder sb = new StringBuilder();
    ReadMarshallable reader = wireIn -> {
        sb.setLength(0);
        int version = wireIn.read(BinLog.VERSION).int16();
        if (version > FullQueryLogger.CURRENT_VERSION) {
            throw new IORuntimeException("Unsupported record version [" + version + "] - highest supported version is [" + FullQueryLogger.CURRENT_VERSION + ']');
        }
        String type = wireIn.read(BinLog.TYPE).text();
        if (!FullQueryLogger.SINGLE_QUERY.equals((type)) && !FullQueryLogger.BATCH.equals((type))) {
            throw new IORuntimeException("Unsupported record type field [" + type + "] - supported record types are [" + FullQueryLogger.SINGLE_QUERY + ", " + FullQueryLogger.BATCH + ']');
        }
        sb.append("Type: ").append(type).append(System.lineSeparator());
        long queryStartTime = wireIn.read(FullQueryLogger.QUERY_START_TIME).int64();
        sb.append("Query start time: ").append(queryStartTime).append(System.lineSeparator());
        int protocolVersion = wireIn.read(FullQueryLogger.PROTOCOL_VERSION).int32();
        sb.append("Protocol version: ").append(protocolVersion).append(System.lineSeparator());
        QueryOptions options = QueryOptions.codec.decode(Unpooled.wrappedBuffer(wireIn.read(FullQueryLogger.QUERY_OPTIONS).bytes()), ProtocolVersion.decode(protocolVersion, true));
        long generatedTimestamp = wireIn.read(FullQueryLogger.GENERATED_TIMESTAMP).int64();
        sb.append("Generated timestamp:").append(generatedTimestamp).append(System.lineSeparator());
        int generatedNowInSeconds = wireIn.read(FullQueryLogger.GENERATED_NOW_IN_SECONDS).int32();
        sb.append("Generated nowInSeconds:").append(generatedNowInSeconds).append(System.lineSeparator());
        switch(type) {
            case (FullQueryLogger.SINGLE_QUERY):
                dumpQuery(options, wireIn, sb);
                break;
            case (FullQueryLogger.BATCH):
                dumpBatch(options, wireIn, sb);
                break;
            default:
                throw new IORuntimeException("Log entry of unsupported type " + type);
        }
        System.out.print(sb.toString());
        System.out.flush();
    };
    // Backoff strategy for spinning on the queue, not aggressive at all as this doesn't need to be low latency
    Pauser pauser = Pauser.millis(100);
    List<ChronicleQueue> queues = arguments.stream().distinct().map(path -> SingleChronicleQueueBuilder.single(new File(path)).readOnly(true).rollCycle(RollCycles.valueOf(rollCycle)).build()).collect(Collectors.toList());
    List<ExcerptTailer> tailers = queues.stream().map(ChronicleQueue::createTailer).collect(Collectors.toList());
    boolean hadWork = true;
    while (hadWork) {
        hadWork = false;
        for (ExcerptTailer tailer : tailers) {
            while (tailer.readDocument(reader)) {
                hadWork = true;
            }
        }
        if (follow) {
            if (!hadWork) {
                // Chronicle queue doesn't support blocking so use this backoff strategy
                pauser.pause();
            }
            // Don't terminate the loop even if there wasn't work
            hadWork = true;
        }
    }
}
Also used : IORuntimeException(net.openhft.chronicle.core.io.IORuntimeException) ByteBuffer(java.nio.ByteBuffer) ArrayList(java.util.ArrayList) Unpooled(io.netty.buffer.Unpooled) Bytes(net.openhft.chronicle.bytes.Bytes) Option(io.airlift.airline.Option) ReadMarshallable(net.openhft.chronicle.wire.ReadMarshallable) ProtocolVersion(org.apache.cassandra.transport.ProtocolVersion) Pauser(net.openhft.chronicle.threads.Pauser) ExcerptTailer(net.openhft.chronicle.queue.ExcerptTailer) BinLog(org.apache.cassandra.utils.binlog.BinLog) ChronicleQueue(net.openhft.chronicle.queue.ChronicleQueue) Collectors(java.util.stream.Collectors) File(java.io.File) BufferUnderflowException(java.nio.BufferUnderflowException) WireIn(net.openhft.chronicle.wire.WireIn) Command(io.airlift.airline.Command) SingleChronicleQueueBuilder(net.openhft.chronicle.queue.impl.single.SingleChronicleQueueBuilder) List(java.util.List) ValueIn(net.openhft.chronicle.wire.ValueIn) FullQueryLogger(org.apache.cassandra.fql.FullQueryLogger) RollCycles(net.openhft.chronicle.queue.RollCycles) Arguments(io.airlift.airline.Arguments) Collections(java.util.Collections) QueryOptions(org.apache.cassandra.cql3.QueryOptions) QueryOptions(org.apache.cassandra.cql3.QueryOptions) Pauser(net.openhft.chronicle.threads.Pauser) ExcerptTailer(net.openhft.chronicle.queue.ExcerptTailer) ReadMarshallable(net.openhft.chronicle.wire.ReadMarshallable) IORuntimeException(net.openhft.chronicle.core.io.IORuntimeException) ChronicleQueue(net.openhft.chronicle.queue.ChronicleQueue) File(java.io.File)

Aggregations

Arguments (io.airlift.airline.Arguments)1 Command (io.airlift.airline.Command)1 Option (io.airlift.airline.Option)1 Unpooled (io.netty.buffer.Unpooled)1 File (java.io.File)1 BufferUnderflowException (java.nio.BufferUnderflowException)1 ByteBuffer (java.nio.ByteBuffer)1 ArrayList (java.util.ArrayList)1 Collections (java.util.Collections)1 List (java.util.List)1 Collectors (java.util.stream.Collectors)1 Bytes (net.openhft.chronicle.bytes.Bytes)1 IORuntimeException (net.openhft.chronicle.core.io.IORuntimeException)1 ChronicleQueue (net.openhft.chronicle.queue.ChronicleQueue)1 ExcerptTailer (net.openhft.chronicle.queue.ExcerptTailer)1 RollCycles (net.openhft.chronicle.queue.RollCycles)1 SingleChronicleQueueBuilder (net.openhft.chronicle.queue.impl.single.SingleChronicleQueueBuilder)1 Pauser (net.openhft.chronicle.threads.Pauser)1 ReadMarshallable (net.openhft.chronicle.wire.ReadMarshallable)1 ValueIn (net.openhft.chronicle.wire.ValueIn)1