Package io.debezium.connector.mongodb.connection

Class MongoDbConnection

java.lang.Object

io.debezium.connector.mongodb.connection.MongoDbConnection

All Implemented Interfaces:

AutoCloseable

public final class MongoDbConnection
extends Object
implements AutoCloseable

Scoped Mongodb Connection which applies filter configuration and replica set specification when required Internally this wrapper attempts to obtain regular MongoClient instance

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	MongoDbConnection.ErrorHandler

Field Summary

Fields

Modifier and Type	Field	Description
static final String	AUTHORIZATION_FAILURE_MESSAGE
private final MongoDbConnectionContext	connectionContext
private final MongoDbConnectorConfig	connectorConfig
private final MongoDbConnection.ErrorHandler	errorHandler
private final Filters	filters
static final org.slf4j.Logger	LOGGER
private static final Duration	PAUSE_AFTER_ERROR	A pause between failed MongoDB operations to prevent CPU throttling and DoS of target MongoDB database.
private final AtomicBoolean	running

Constructor Summary

Constructors

Constructor	Description
MongoDbConnection(Configuration config, MongoDbConnection.ErrorHandler errorHandler)

Method Summary

Modifier and Type	Method	Description
void	close()
List<CollectionId>	collections()	Get the identifiers of all the collections, applying the current collection filter configuration.
Set<String>	databaseNames()	Get the names of all the databases applying the current database filter configuration.
void	execute(String desc, BlockingConsumer<com.mongodb.client.MongoClient> operation)	Execute the supplied operation.
<T> T	execute(String desc, BlockingFunction<com.mongodb.client.MongoClient,T> operation)	Execute the supplied operation.
com.mongodb.client.MongoClient	getMongoClient()
org.bson.BsonTimestamp	hello()	Executes the ping command (Ping) using the first available database
private boolean	isRunning()
private boolean	isValidResumeToken(org.bson.BsonDocument token, MongoDbTaskContext taskContext)
boolean	validateLogPosition(MongoDbOffsetContext offset, MongoDbTaskContext taskContext)

Methods inherited from class java.lang.Object

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

Field Details

LOGGER

public static final org.slf4j.Logger LOGGER

AUTHORIZATION_FAILURE_MESSAGE

public static final String AUTHORIZATION_FAILURE_MESSAGE

See Also:

• Constant Field Values

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.

filters

private final Filters filters

errorHandler

private final MongoDbConnection.ErrorHandler errorHandler

running

private final AtomicBoolean running

connectorConfig

private final MongoDbConnectorConfig connectorConfig

connectionContext

private final MongoDbConnectionContext connectionContext

Constructor Details

MongoDbConnection

MongoDbConnection(Configuration config,
 MongoDbConnection.ErrorHandler errorHandler)

Method Details

getMongoClient

public com.mongodb.client.MongoClient getMongoClient()

execute

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

Execute the supplied operation. Whenever the operation fails the error handler is called and the operation is repeated

Parameters:

desc - the description of the operation, for logging purposes

operation - the operation to be performed

Throws:

InterruptedException

execute

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

Execute the supplied operation. Whenever the operation fails the error handler is called and the operation is repeated

Parameters:

desc - the description of the operation, for logging purposes

operation - the operation to be performed

Returns:

return value of the executed operation

Throws:

InterruptedException

databaseNames

public Set<String> databaseNames()
                          throws InterruptedException

Get the names of all the databases applying the current database filter configuration.

Returns:

the database names; never null but possibly empty

Throws:

InterruptedException

collections

public List<CollectionId> collections()
                               throws InterruptedException

Get the identifiers of all the collections, applying the current collection filter configuration.

Returns:

the collection identifiers; never null

Throws:

InterruptedException

hello

public org.bson.BsonTimestamp hello()
                             throws InterruptedException

Executes the ping command (Ping) using the first available database

Returns:

timestamp of the executed operation

Throws:

InterruptedException

isRunning

private boolean isRunning()

validateLogPosition

public boolean validateLogPosition(MongoDbOffsetContext offset,
 MongoDbTaskContext taskContext)

isValidResumeToken

private boolean isValidResumeToken(org.bson.BsonDocument token,
 MongoDbTaskContext taskContext)

close

public void close()

Specified by:

close in interface AutoCloseable