io.debezium.connector.mongodb

Class ConnectionContext

java.lang.Object

io.debezium.connector.mongodb.ConnectionContext

All Implemented Interfaces:

AutoCloseable

public class ConnectionContext
extends Object
implements AutoCloseable

Author:

Randall Hauch

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ConnectionContext.MongoPrimary A supplier of a client that connects only to the primary of a replica set.
static interface	ConnectionContext.PrimaryConnectFailed

Field Summary

Fields

Modifier and Type	Field and Description
protected Configuration	config
private static org.slf4j.Logger	LOGGER
private static Duration	PAUSE_AFTER_ERROR A pause between failed MongoDB operations to prevent CPU throttling and DoS of target MongoDB database.
protected MongoClients	pool
protected DelayStrategy	primaryBackoffStrategy
protected ReplicaSets	replicaSets
protected boolean	useHostsAsSeeds

Constructor Summary

Constructors

Constructor and Description
ConnectionContext(Configuration config)

Method Summary

Modifier and Type	Method and Description
com.mongodb.client.MongoClient	clientFor(List<com.mongodb.ServerAddress> addresses)
com.mongodb.client.MongoClient	clientFor(String seedAddresses)
protected com.mongodb.client.MongoClient	clientForPrimary(ReplicaSet replicaSet) Obtain a client that talks only to the primary node of the replica set.
com.mongodb.client.MongoClient	clientForReplicaSet(ReplicaSet replicaSet)
MongoClients	clients()
void	close()
String	hosts()
protected org.slf4j.Logger	logger()
int	maxConnectionAttemptsForPrimary()
boolean	performSnapshotEvenIfNotNeeded()
Duration	pollInterval()
protected Supplier<com.mongodb.client.MongoClient>	primaryClientFor(ReplicaSet replicaSet) Obtain a client that will repeated try to obtain a client to the primary node of the replica set, waiting (and using this context's back-off strategy) if required until the primary becomes available.
protected Supplier<com.mongodb.client.MongoClient>	primaryClientFor(ReplicaSet replicaSet, ConnectionContext.PrimaryConnectFailed handler) Obtain a client that will repeated try to obtain a client to the primary node of the replica set, waiting (and using this context's back-off strategy) if required until the primary becomes available.
ConnectionContext.MongoPrimary	primaryFor(ReplicaSet replicaSet, Filters filters, BiConsumer<String,Throwable> errorHandler) Obtain a client that will repeated try to obtain a client to the primary node of the replica set, waiting (and using this context's back-off strategy) if required until the primary becomes available.
ReplicaSets	replicaSets()
void	shutdown()

Methods inherited from class java.lang.Object

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

Field Detail

PAUSE_AFTER_ERROR

private static final Duration PAUSE_AFTER_ERROR

A pause between failed MongoDB operations to prevent CPU throttling and DoS of target MongoDB database.

LOGGER

private static final org.slf4j.Logger LOGGER

config

protected final Configuration config

pool

protected final MongoClients pool

replicaSets

protected final ReplicaSets replicaSets

primaryBackoffStrategy

protected final DelayStrategy primaryBackoffStrategy

useHostsAsSeeds

protected final boolean useHostsAsSeeds

Constructor Detail

ConnectionContext

public ConnectionContext(Configuration config)

Parameters:

config - the configuration

Method Detail

shutdown

public void shutdown()

close

public final void close()

Specified by:

close in interface AutoCloseable

logger

protected org.slf4j.Logger logger()

clients

public MongoClients clients()

replicaSets

public ReplicaSets replicaSets()

performSnapshotEvenIfNotNeeded

public boolean performSnapshotEvenIfNotNeeded()

clientForReplicaSet

public com.mongodb.client.MongoClient clientForReplicaSet(ReplicaSet replicaSet)

clientFor

public com.mongodb.client.MongoClient clientFor(String seedAddresses)

clientFor

public com.mongodb.client.MongoClient clientFor(List<com.mongodb.ServerAddress> addresses)

hosts

public String hosts()

pollInterval

public Duration pollInterval()

maxConnectionAttemptsForPrimary

public int maxConnectionAttemptsForPrimary()

primaryFor

public ConnectionContext.MongoPrimary primaryFor(ReplicaSet replicaSet,
                                                 Filters filters,
                                                 BiConsumer<String,Throwable> errorHandler)

Obtain a client that will repeated try to obtain a client to the primary node of the replica set, waiting (and using this context's back-off strategy) if required until the primary becomes available.

Parameters:

replicaSet - the replica set information; may not be null

filters - the filter configuration

errorHandler - the function to be called whenever the primary is unable to execute an operation to completion; may be null

Returns:

the client, or null if no primary could be found for the replica set

primaryClientFor

protected Supplier<com.mongodb.client.MongoClient> primaryClientFor(ReplicaSet replicaSet)

Obtain a client that will repeated try to obtain a client to the primary node of the replica set, waiting (and using this context's back-off strategy) if required until the primary becomes available.

Parameters:

replicaSet - the replica set information; may not be null

Returns:

the client, or null if no primary could be found for the replica set

primaryClientFor

protected Supplier<com.mongodb.client.MongoClient> primaryClientFor(ReplicaSet replicaSet,
                                                                    ConnectionContext.PrimaryConnectFailed handler)

Obtain a client that will repeated try to obtain a client to the primary node of the replica set, waiting (and using this context's back-off strategy) if required until the primary becomes available.

Parameters:

replicaSet - the replica set information; may not be null

handler - the function that will be called when the primary could not be obtained; may not be null

Returns:

the client, or null if no primary could be found for the replica set

clientForPrimary

protected com.mongodb.client.MongoClient clientForPrimary(ReplicaSet replicaSet)

Obtain a client that talks only to the primary node of the replica set.

Parameters:

replicaSet - the replica set information; may not be null

Returns:

the client, or null if no primary could be found for the replica set