org.postgresql.replication.fluent

Interface ChainedStreamBuilder

All Known Implementing Classes:

ReplicationStreamBuilder

public interface ChainedStreamBuilder

Start point for fluent API that build replication stream(logical or physical). Api not thread safe, and can be use only for crate single stream.

Method Summary

Modifier and Type	Method and Description
ChainedLogicalStreamBuilder	logical() Create logical replication stream that decode raw wal logs by output plugin to logical form.
ChainedPhysicalStreamBuilder	physical() Create physical replication stream for process wal logs in binary form.

Method Detail

logical

ChainedLogicalStreamBuilder logical()

Create logical replication stream that decode raw wal logs by output plugin to logical form. Default about logical decoding you can see by following link Logical Decoding Concepts . Example usage:

   

    PGReplicationStream stream =
        pgConnection
            .getReplicationAPI()
            .replicationStream()
            .logical()
            .withSlotName("test_decoding")
            .withSlotOption("include-xids", false)
            .withSlotOption("skip-empty-xacts", true)
            .start();

    while (true) {
      ByteBuffer buffer = stream.read();
      //process logical changes
    }

   
 

Returns:

not null fluent api

physical

ChainedPhysicalStreamBuilder physical()

Create physical replication stream for process wal logs in binary form. Example usage:

   

    LogSequenceNumber lsn = getCurrentLSN();

    PGReplicationStream stream =
        pgConnection
            .getReplicationAPI()
            .replicationStream()
            .physical()
            .withStartPosition(lsn)
            .start();

    while (true) {
      ByteBuffer buffer = stream.read();
      //process binary WAL logs
    }

   
 

Returns:

not null fluent api