com.couchbase.transactions.cleanup

Class ClientRecord

java.lang.Object

com.couchbase.transactions.cleanup.ClientRecord

@Stability.Internal
public class ClientRecord
extends java.lang.Object

Represents the ClientRecord doc, a single document that contains an entry for every client (app) current participating in the cleanup of 'lost' transactions.

ClientRecord isn't as contended as it appears. It's only read and written to by each client once per cleanup window (default for this is 60 seconds). It does remain a single point of failure, but with a sensible number of replicas this is unlikely to be a problem.

All writes are non-durable. If a write is rolled back then it's not critical, it will just take a little longer to find lost txns.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	CLIENT_RECORD_DOC_ID
static java.lang.String	FIELD_CLIENTS
static java.lang.String	FIELD_OVERRIDE
static java.lang.String	FIELD_OVERRIDE_ENABLED
static java.lang.String	FIELD_OVERRIDE_EXPIRES
static java.lang.String	FIELD_RECORDS

Constructor Summary

Constructors

Constructor and Description
ClientRecord(ClusterData clusterData, TransactionConfig config)

Method Summary

Modifier and Type	Method and Description
protected reactor.core.publisher.Mono<java.lang.Integer>	beforeCreateRecord(ClientRecord self)
protected reactor.core.publisher.Mono<java.lang.Integer>	beforeGetRecord(ClientRecord self)
protected reactor.core.publisher.Mono<java.lang.Integer>	beforeRemoveClient(ClientRecord self)
protected reactor.core.publisher.Mono<java.lang.Integer>	beforeUpdateCAS(ClientRecord self) Deprecated.
protected reactor.core.publisher.Mono<java.lang.Integer>	beforeUpdateRecord(ClientRecord self)
static reactor.core.publisher.Mono<com.couchbase.client.java.kv.LookupInResult>	getClientRecord(com.couchbase.client.java.ReactiveCollection collection)
reactor.core.publisher.Mono<ClientRecordDetails>	getClientRecord(java.lang.String bucketName)
static ClientRecordDetails	parseClientRecord(com.couchbase.client.java.kv.LookupInResult clientRecord, java.lang.String clientUuid)
reactor.core.publisher.Mono<ClientRecordDetails>	processClient(java.lang.String clientUuid, com.couchbase.client.java.ReactiveCollection collection, TransactionConfig config)
reactor.core.publisher.Flux<java.lang.Void>	removeClientFromAllBuckets(java.lang.String clientUuid)
reactor.core.publisher.Flux<java.lang.Void>	removeClientFromAllBuckets(java.lang.String clientUuid, java.time.Duration timeout) Called on shutdown to cleanly remove a client from the client-record.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CLIENT_RECORD_DOC_ID

public static java.lang.String CLIENT_RECORD_DOC_ID

FIELD_RECORDS

public static final java.lang.String FIELD_RECORDS

See Also:

Constant Field Values

FIELD_CLIENTS

public static final java.lang.String FIELD_CLIENTS

See Also:

Constant Field Values

FIELD_OVERRIDE

public static final java.lang.String FIELD_OVERRIDE

See Also:

Constant Field Values

FIELD_OVERRIDE_ENABLED

public static final java.lang.String FIELD_OVERRIDE_ENABLED

See Also:

Constant Field Values

FIELD_OVERRIDE_EXPIRES

public static final java.lang.String FIELD_OVERRIDE_EXPIRES

See Also:

Constant Field Values

Constructor Detail

ClientRecord

public ClientRecord(ClusterData clusterData,
                    TransactionConfig config)

Method Detail

removeClientFromAllBuckets

public reactor.core.publisher.Flux<java.lang.Void> removeClientFromAllBuckets(java.lang.String clientUuid)

removeClientFromAllBuckets

public reactor.core.publisher.Flux<java.lang.Void> removeClientFromAllBuckets(java.lang.String clientUuid,
                                                                              java.time.Duration timeout)

Called on shutdown to cleanly remove a client from the client-record.

parseClientRecord

public static ClientRecordDetails parseClientRecord(com.couchbase.client.java.kv.LookupInResult clientRecord,
                                                    java.lang.String clientUuid)

getClientRecord

public reactor.core.publisher.Mono<ClientRecordDetails> getClientRecord(java.lang.String bucketName)

getClientRecord

public static reactor.core.publisher.Mono<com.couchbase.client.java.kv.LookupInResult> getClientRecord(com.couchbase.client.java.ReactiveCollection collection)

processClient

public reactor.core.publisher.Mono<ClientRecordDetails> processClient(java.lang.String clientUuid,
                                                                      com.couchbase.client.java.ReactiveCollection collection,
                                                                      TransactionConfig config)

beforeCreateRecord

protected reactor.core.publisher.Mono<java.lang.Integer> beforeCreateRecord(ClientRecord self)

beforeRemoveClient

protected reactor.core.publisher.Mono<java.lang.Integer> beforeRemoveClient(ClientRecord self)

beforeUpdateCAS

@Deprecated
protected reactor.core.publisher.Mono<java.lang.Integer> beforeUpdateCAS(ClientRecord self)

Deprecated.

beforeGetRecord

protected reactor.core.publisher.Mono<java.lang.Integer> beforeGetRecord(ClientRecord self)

beforeUpdateRecord

protected reactor.core.publisher.Mono<java.lang.Integer> beforeUpdateRecord(ClientRecord self)