io.debezium.connector.mongodb

Class ConnectionContext.MongoPrimary

java.lang.Object

io.debezium.connector.mongodb.ConnectionContext.MongoPrimary

Enclosing class:

ConnectionContext

public static class ConnectionContext.MongoPrimary
extends Object

A supplier of a client that connects only to the primary of a replica set. Operations on the primary will continue

Field Summary

Fields

Modifier and Type	Field and Description
private BiConsumer<String,Throwable>	errorHandler
private Filters	filters
private Supplier<com.mongodb.client.MongoClient>	primaryConnectionSupplier
private ReplicaSet	replicaSet
private AtomicBoolean	running

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MongoPrimary(ConnectionContext context, ReplicaSet replicaSet, Filters filters, BiConsumer<String,Throwable> errorHandler)

Method Summary

Modifier and Type	Method and Description
com.mongodb.ServerAddress	address() Get the address of the primary node, if there is one.
List<CollectionId>	collections() Use the primary to get the identifiers of all the collections in the replica set, applying the current collection filter configuration.
Set<String>	databaseNames() Use the primary to get the names of all the databases in the replica set, applying the current database filter configuration.
void	execute(String desc, Consumer<com.mongodb.client.MongoClient> operation) Execute the supplied operation using the primary, blocking until a primary is available.
<T> T	execute(String desc, Function<com.mongodb.client.MongoClient,T> operation) Execute the supplied operation using the primary, blocking until a primary is available.
void	executeBlocking(String desc, BlockingConsumer<com.mongodb.client.MongoClient> operation) Execute the supplied operation using the primary, blocking until a primary is available.
private boolean	isRunning()
ReplicaSet	replicaSet() Get the replica set.
void	stop() Terminates the execution loop of the current primary

Methods inherited from class java.lang.Object

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

Field Detail

replicaSet

private final ReplicaSet replicaSet

primaryConnectionSupplier

private final Supplier<com.mongodb.client.MongoClient> primaryConnectionSupplier

filters

private final Filters filters

errorHandler

private final BiConsumer<String,Throwable> errorHandler

running

private final AtomicBoolean running

Constructor Detail

MongoPrimary

protected MongoPrimary(ConnectionContext context,
                       ReplicaSet replicaSet,
                       Filters filters,
                       BiConsumer<String,Throwable> errorHandler)

Method Detail

replicaSet

public ReplicaSet replicaSet()

Get the replica set.

Returns:

the replica set; never null

address

public com.mongodb.ServerAddress address()

Get the address of the primary node, if there is one.

Returns:

the address of the replica set's primary node, or null if there is currently no primary

execute

public void execute(String desc,
                    Consumer<com.mongodb.client.MongoClient> operation)

Execute the supplied operation using the primary, blocking until a primary is available. Whenever the operation stops (e.g., if the primary is no longer primary), then restart the operation using the current primary.

Parameters:

desc - the description of the operation, for logging purposes

operation - the operation to be performed on the primary.

execute

public <T> T execute(String desc,
                     Function<com.mongodb.client.MongoClient,T> operation)

Execute the supplied operation using the primary, blocking until a primary is available. Whenever the operation stops (e.g., if the primary is no longer primary), then restart the operation using the current primary.

Parameters:

desc - the description of the operation, for logging purposes

operation - the operation to be performed on the primary

Returns:

return value of the executed operation

executeBlocking

public void executeBlocking(String desc,
                            BlockingConsumer<com.mongodb.client.MongoClient> operation)
                     throws InterruptedException

Execute the supplied operation using the primary, blocking until a primary is available. Whenever the operation stops (e.g., if the primary is no longer primary), then restart the operation using the current primary.

Parameters:

desc - the description of the operation, for logging purposes

operation - the operation to be performed on the primary.

Throws:

InterruptedException - if the operation was interrupted

databaseNames

public Set<String> databaseNames()

Use the primary to get the names of all the databases in the replica set, applying the current database filter configuration. This method will block until a primary can be obtained to get the names of all databases in the replica set.

Returns:

the database names; never null but possibly empty

collections

public List<CollectionId> collections()

Use the primary to get the identifiers of all the collections in the replica set, applying the current collection filter configuration. This method will block until a primary can be obtained to get the identifiers of all collections in the replica set.

Returns:

the collection identifiers; never null

isRunning

private boolean isRunning()

stop

public void stop()

Terminates the execution loop of the current primary