Package com.zendesk.maxwell.recovery

Class RecoverySchemaStore

java.lang.Object

com.zendesk.maxwell.recovery.RecoverySchemaStore

All Implemented Interfaces:

SchemaStore

public class RecoverySchemaStore
extends Object
implements SchemaStore

A schema store that contains only the maxwell database, and throws away any schema changes we encounter while trying to recover the binlog position.

Constructor Summary

Constructors

Constructor	Description
RecoverySchemaStore(ConnectionPool replicationConnectionPool, String maxwellDatabaseName, CaseSensitivity caseSensitivity)

Method Summary

Modifier and Type	Method	Description
Schema	getSchema()	Retrieve the current schema If no Stored schema is found, this method should capture and save a snapshot of the current mysql schema.
Long	getSchemaID()	Retrieve current schema id Schema id should be an always increasing integer, not current intended for use to refernce the schema, simply as a schema generation indicator.
List<ResolvedSchemaChange>	processSQL(String sql, String currentDatabase, Position position)	Process a DDL statement Parse the given SQL, applying the changes to the schema.

Methods inherited from class java.lang.Object

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

Constructor Detail

RecoverySchemaStore

public RecoverySchemaStore(ConnectionPool replicationConnectionPool,
                           String maxwellDatabaseName,
                           CaseSensitivity caseSensitivity)

Method Detail

getSchema

public Schema getSchema()
                 throws SchemaStoreException

Description copied from interface: SchemaStore

Retrieve the current schema If no Stored schema is found, this method should capture and save a snapshot of the current mysql schema.

Specified by:

getSchema in interface SchemaStore

Returns:

The schema, either retrieved from storage or captured.

Throws:

SchemaStoreException - if we have issues gettng the schema

processSQL

public List<ResolvedSchemaChange> processSQL(String sql,
                                             String currentDatabase,
                                             Position position)
                                      throws SchemaStoreException,
                                             InvalidSchemaError

Description copied from interface: SchemaStore

Process a DDL statement Parse the given SQL, applying the changes to the schema. Returns a list of ResolvedSchemaChange objects, representing the DDL that was applied (if any)

Specified by:

processSQL in interface SchemaStore

Parameters:

sql - The SQL of the DDL statement

currentDatabase - The "contextual database" of the DDL statement

position - The position of the DDL statement

Returns:

A list of the schema changes parsed from the SQL.

Throws:

SchemaStoreException - if we have trouble processing or storing the schema change

InvalidSchemaError - if we find the schema to be in a bad state

getSchemaID

public Long getSchemaID()
                 throws SchemaStoreException

Description copied from interface: SchemaStore

Retrieve current schema id Schema id should be an always increasing integer, not current intended for use to refernce the schema, simply as a schema generation indicator.

Specified by:

getSchemaID in interface SchemaStore

Returns:

The current schema id

Throws:

SchemaStoreException - if we have trouble getting the schema id