io.debezium.heartbeat

Interface Heartbeat

All Known Implementing Classes:

DatabaseHeartbeatImpl, HeartbeatImpl

public interface Heartbeat

A class that is able to generate periodic heartbeat messages based on a pre-configured interval. The clients are supposed to call method heartbeat(Map, Map, BlockingConsumer) from a main loop of a connector.

Author:

Jiri Pechanec

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	Heartbeat.OffsetProducer Returns the offset to be used when emitting a heartbeat event.

Field Summary

Fields

Modifier and Type	Field and Description
static Heartbeat	DEFAULT_NOOP_HEARTBEAT No-op Heartbeat implementation
static Field	HEARTBEAT_INTERVAL
static String	HEARTBEAT_INTERVAL_PROPERTY_NAME
static Field	HEARTBEAT_TOPICS_PREFIX

Method Summary

Modifier and Type	Method and Description
static Heartbeat	create(Duration heartbeatInterval, String topicName, String key) Provide an instance of Heartbeat object
static Heartbeat	create(Duration heartbeatInterval, String heartbeatQuery, String topicName, String key, JdbcConnection jdbcConnection, HeartbeatErrorHandler errorHandler)
void	forcedBeat(Map<String,?> partition, Map<String,?> offset, BlockingConsumer<org.apache.kafka.connect.source.SourceRecord> consumer) Generates a heartbeat record unconditionaly
void	heartbeat(Map<String,?> partition, Heartbeat.OffsetProducer offsetProducer, BlockingConsumer<org.apache.kafka.connect.source.SourceRecord> consumer) Generates a heartbeat record if defined time has elapsed
void	heartbeat(Map<String,?> partition, Map<String,?> offset, BlockingConsumer<org.apache.kafka.connect.source.SourceRecord> consumer) Generates a heartbeat record if defined time has elapsed
boolean	isEnabled() Whether heartbeats are enabled or not.

Field Detail

HEARTBEAT_INTERVAL_PROPERTY_NAME

static final String HEARTBEAT_INTERVAL_PROPERTY_NAME

See Also:

Constant Field Values

HEARTBEAT_INTERVAL

static final Field HEARTBEAT_INTERVAL

HEARTBEAT_TOPICS_PREFIX

static final Field HEARTBEAT_TOPICS_PREFIX

DEFAULT_NOOP_HEARTBEAT

static final Heartbeat DEFAULT_NOOP_HEARTBEAT

No-op Heartbeat implementation

Method Detail

heartbeat

void heartbeat(Map<String,?> partition,
               Map<String,?> offset,
               BlockingConsumer<org.apache.kafka.connect.source.SourceRecord> consumer)
        throws InterruptedException

Generates a heartbeat record if defined time has elapsed

Parameters:

partition - partition for the heartbeat record

offset - offset for the heartbeat record

consumer - - a code to place record among others to be sent into Connect

Throws:

InterruptedException

heartbeat

void heartbeat(Map<String,?> partition,
               Heartbeat.OffsetProducer offsetProducer,
               BlockingConsumer<org.apache.kafka.connect.source.SourceRecord> consumer)
        throws InterruptedException

Generates a heartbeat record if defined time has elapsed

Parameters:

partition - partition for the heartbeat record

offsetProducer - lazily calculated offset for the heartbeat record

consumer - - a code to place record among others to be sent into Connect

Throws:

InterruptedException

forcedBeat

void forcedBeat(Map<String,?> partition,
                Map<String,?> offset,
                BlockingConsumer<org.apache.kafka.connect.source.SourceRecord> consumer)
         throws InterruptedException

Generates a heartbeat record unconditionaly

Parameters:

partition - partition for the heartbeat record

offset - offset for the heartbeat record

consumer - - a code to place record among others to be sent into Connect

Throws:

InterruptedException

isEnabled

boolean isEnabled()

Whether heartbeats are enabled or not.

create

static Heartbeat create(Duration heartbeatInterval,
                        String topicName,
                        String key)

Provide an instance of Heartbeat object

Parameters:

heartbeatInterval - heartbeat interval config value as java.time.Duration

topicName - topic to which the heartbeat messages will be sent

key - kafka partition key to use for the heartbeat message

create

static Heartbeat create(Duration heartbeatInterval,
                        String heartbeatQuery,
                        String topicName,
                        String key,
                        JdbcConnection jdbcConnection,
                        HeartbeatErrorHandler errorHandler)