Examples with MaxSCNReaderWriter com.linkedin.databus2.core.seq.MaxSCNReaderWriter used on opensource projects

Example 1 with MaxSCNReaderWriter

use of com.linkedin.databus2.core.seq.MaxSCNReaderWriter in project databus by linkedin.

the class RelayEventProducer method getCheckpoint.

protected Checkpoint getCheckpoint(long sinceSCN, MaxSCNReaderWriter scnReaderWriter) {
    long scn = sinceSCN;
    if ((scn < 0) && (_scnReaderWriter != null)) {
        try {
            scn = _scnReaderWriter.getMaxScn();
        } catch (DatabusException e) {
            LOG.info("Cannot read persisted SCN " + e);
            scn = -1;
        }
    }
    // return no cp if unable to read from saved SCN
    if (scn <= 0) {
        return null;
    }
    Checkpoint cp = new Checkpoint();
    cp.setConsumptionMode(DbusClientMode.ONLINE_CONSUMPTION);
    // always have greater than semantic
    cp.setWindowOffset(-1);
    cp.setWindowScn(scn);
    return cp;
}

Example 2 with MaxSCNReaderWriter

use of com.linkedin.databus2.core.seq.MaxSCNReaderWriter in project databus by linkedin.

the class DatabusRelayMain method addOneProducer.

/**
 * overrides HTTP relay method
 */
@Override
public void addOneProducer(PhysicalSourceStaticConfig pConfig) throws DatabusException, EventCreationException, UnsupportedKeyException, SQLException, InvalidConfigException {
    // Register a command to allow start/stop/status of the relay
    List<EventProducer> plist = new ArrayList<EventProducer>();
    PhysicalPartition pPartition = pConfig.getPhysicalPartition();
    MaxSCNReaderWriter maxScnReaderWriters = _maxScnReaderWriters.getOrCreateHandler(pPartition);
    LOG.info("Starting server container with maxScnReaderWriter:" + maxScnReaderWriters);
    // Get the event buffer
    DbusEventBufferAppendable dbusEventBuffer = getEventBuffer().getDbusEventBufferAppendable(pPartition);
    // Get the schema registry service
    SchemaRegistryService schemaRegistryService = getSchemaRegistryService();
    // Get a stats collector per physical source
    addPhysicalPartitionCollectors(pPartition);
    String statsCollectorName = pPartition.toSimpleString();
    /*
		 * _inBoundStatsCollectors.addStatsCollector(statsCollectorName, new
		 * DbusEventsStatisticsCollector(getContainerStaticConfig().getId(),
		 * statsCollectorName+".inbound", true, false, getMbeanServer()));
		 *
		 * _outBoundStatsCollectors.addStatsCollector(statsCollectorName, new
		 * DbusEventsStatisticsCollector(getContainerStaticConfig().getId(),
		 * statsCollectorName+".outbound", true, false, getMbeanServer()));
		 */
    // Create the event producer
    String uri = pConfig.getUri();
    if (uri == null)
        throw new DatabusException("Uri is required to start the relay");
    uri = uri.trim();
    EventProducer producer = null;
    if (uri.startsWith("jdbc:")) {
        SourceType sourceType = pConfig.getReplBitSetter().getSourceType();
        if (SourceType.TOKEN.equals(sourceType))
            throw new DatabusException("Token Source-type for Replication bit setter config cannot be set for trigger-based Databus relay !!");
        // if a buffer for this partiton exists - we are overwri
        producer = new OracleEventProducerFactory().buildEventProducer(pConfig, schemaRegistryService, dbusEventBuffer, getMbeanServer(), _inBoundStatsCollectors.getStatsCollector(statsCollectorName), maxScnReaderWriters);
    } else if (uri.startsWith("mock")) {
        // Get all relevant pConfig attributes
        // TODO add real instantiation
        EventProducerServiceProvider mockProvider = _producersRegistry.getEventProducerServiceProvider("mock");
        if (null == mockProvider) {
            throw new DatabusRuntimeException("relay event producer not available: " + "mock");
        }
        producer = mockProvider.createProducer(pConfig, schemaRegistryService, dbusEventBuffer, _inBoundStatsCollectors.getStatsCollector(statsCollectorName), maxScnReaderWriters);
    } else if (uri.startsWith("gg:")) {
        producer = new GoldenGateEventProducer(pConfig, schemaRegistryService, dbusEventBuffer, _inBoundStatsCollectors.getStatsCollector(statsCollectorName), maxScnReaderWriters);
    } else if (uri.startsWith("mysql:")) {
        LOG.info("Adding OpenReplicatorEventProducer for uri :" + uri);
        final String serviceName = "or";
        EventProducerServiceProvider orProvider = _producersRegistry.getEventProducerServiceProvider(serviceName);
        if (null == orProvider) {
            throw new DatabusRuntimeException("relay event producer not available: " + serviceName);
        }
        producer = orProvider.createProducer(pConfig, schemaRegistryService, dbusEventBuffer, _inBoundStatsCollectors.getStatsCollector(statsCollectorName), maxScnReaderWriters);
    } else {
        // Get all relevant pConfig attributes and initialize the nettyThreadPool objects
        RelayEventProducer.DatabusClientNettyThreadPools nettyThreadPools = new RelayEventProducer.DatabusClientNettyThreadPools(0, getNetworkTimeoutTimer(), getBossExecutorService(), getIoExecutorService(), getHttpChannelGroup());
        producer = new RelayEventProducer(pConfig, dbusEventBuffer, _inBoundStatsCollectors.getStatsCollector(statsCollectorName), maxScnReaderWriters, nettyThreadPools);
    }
    // if a buffer for this partiton exists - we are overwriting it.
    _producers.put(pPartition, producer);
    plist.add(producer);
    // append 'monitoring event producer'
    if (producer instanceof OracleEventProducer) {
        MonitoringEventProducer monitoringProducer = new MonitoringEventProducer("dbMonitor." + pPartition.toSimpleString(), pConfig.getName(), pConfig.getUri(), ((OracleEventProducer) producer).getMonitoredSourceInfos(), getMbeanServer());
        _monitoringProducers.put(pPartition, monitoringProducer);
        plist.add(monitoringProducer);
    }
    if (_csEventRequestProcessor == null)
        _csEventRequestProcessor = new ControlSourceEventsRequestProcessor(null, this, plist);
    else
        _csEventRequestProcessor.addEventProducers(plist);
    RequestProcessorRegistry processorRegistry = getProcessorRegistry();
    processorRegistry.reregister(ControlSourceEventsRequestProcessor.COMMAND_NAME, _csEventRequestProcessor);
}

Example 3 with MaxSCNReaderWriter

use of com.linkedin.databus2.core.seq.MaxSCNReaderWriter in project databus by linkedin.

the class OracleEventProducerFactory method buildEventProducer.

public EventProducer buildEventProducer(PhysicalSourceStaticConfig physicalSourceConfig, SchemaRegistryService schemaRegistryService, DbusEventBufferAppendable dbusEventBuffer, MBeanServer mbeanServer, DbusEventsStatisticsCollector dbusEventsStatisticsCollector, MaxSCNReaderWriter _maxScnReaderWriter) throws DatabusException, EventCreationException, UnsupportedKeyException, SQLException, InvalidConfigException {
    // Make sure the URI from the configuration file identifies an Oracle JDBC source.
    String uri = physicalSourceConfig.getUri();
    if (!uri.startsWith("jdbc:oracle")) {
        throw new InvalidConfigException("Invalid source URI (" + physicalSourceConfig.getUri() + "). Only jdbc:oracle: URIs are supported.");
    }
    // Parse each one of the logical sources
    List<OracleTriggerMonitoredSourceInfo> sources = new ArrayList<OracleTriggerMonitoredSourceInfo>();
    for (LogicalSourceStaticConfig sourceConfig : physicalSourceConfig.getSources()) {
        OracleTriggerMonitoredSourceInfo source = buildOracleMonitoredSourceInfo(sourceConfig, physicalSourceConfig, schemaRegistryService);
        sources.add(source);
    }
    DataSource ds = null;
    try {
        ds = OracleJarUtils.createOracleDataSource(uri);
    } catch (Exception e) {
        String errMsg = "Oracle URI likely not supported. Trouble creating OracleDataSource";
        _log.error(errMsg);
        throw new InvalidConfigException(errMsg + e.getMessage());
    }
    // Create the event producer
    EventProducer eventProducer = new OracleEventProducer(sources, ds, dbusEventBuffer, true, dbusEventsStatisticsCollector, _maxScnReaderWriter, physicalSourceConfig, ManagementFactory.getPlatformMBeanServer());
    _log.info("Created OracleEventProducer for config:  " + physicalSourceConfig + " with slowSourceQueryThreshold = " + physicalSourceConfig.getSlowSourceQueryThreshold());
    return eventProducer;
}

Example 4 with MaxSCNReaderWriter

use of com.linkedin.databus2.core.seq.MaxSCNReaderWriter in project databus by linkedin.

the class FileMaxSCNHandlerFactory method createHandler.

@Override
public MaxSCNReaderWriter createHandler(String id) throws DatabusException {
    FileMaxSCNHandler result;
    synchronized (_configBuilder) {
        String saveKey = _configBuilder.getKey();
        _configBuilder.setKey(saveKey + "_" + id);
        FileMaxSCNHandler.StaticConfig config;
        try {
            config = _configBuilder.build();
        } catch (InvalidConfigException ice) {
            throw new DatabusException("unable to create sequence number handler: " + ice.getMessage(), ice);
        }
        try {
            result = FileMaxSCNHandler.create(config);
        } catch (IOException ioe) {
            throw new DatabusException("unable to create sequence number handler: " + ioe.getMessage(), ioe);
        }
        _configBuilder.setKey(saveKey);
    }
    return result;
}

Example 5 with MaxSCNReaderWriter

use of com.linkedin.databus2.core.seq.MaxSCNReaderWriter in project databus by linkedin.

the class OpenReplicatorEventProducerServiceProvider method createProducer.

@Override
public EventProducer createProducer(PhysicalSourceStaticConfig physicalSourceConfig, SchemaRegistryService schemaRegistryService, DbusEventBufferAppendable eventBuffer, DbusEventsStatisticsCollector statsCollector, MaxSCNReaderWriter checkpointWriter) throws InvalidConfigException {
    // Parse each one of the logical sources
    List<OpenReplicatorAvroEventFactory> eventFactories = new ArrayList<OpenReplicatorAvroEventFactory>();
    for (LogicalSourceStaticConfig sourceConfig : physicalSourceConfig.getSources()) {
        OpenReplicatorAvroEventFactory factory = null;
        try {
            factory = buildEventFactory(sourceConfig, physicalSourceConfig, schemaRegistryService);
        } catch (Exception ex) {
            LOG.error("Got exception while building monitored sources for config :" + sourceConfig, ex);
            throw new InvalidConfigException(ex);
        }
        eventFactories.add(factory);
    }
    EventProducer producer = null;
    try {
        producer = new OpenReplicatorEventProducer(eventFactories, eventBuffer, checkpointWriter, physicalSourceConfig, statsCollector, null, null, schemaRegistryService, JMX_DOMAIN);
    } catch (DatabusException e) {
        LOG.error("Got databus exception when instantiating Open Replicator event producer for source : " + physicalSourceConfig.getName(), e);
        throw new InvalidConfigException(e);
    }
    return producer;
}