software.amazon.kinesis.coordinator.migration

Class MigrationState

java.lang.Object

software.amazon.kinesis.coordinator.CoordinatorState

software.amazon.kinesis.coordinator.migration.MigrationState

public class MigrationState
extends CoordinatorState

Data model of the Migration state. This is used to track the state related to migration from KCLv2.x to KCLv3.x.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MigrationState.HistoryEntry

Field Summary

Fields

Modifier and Type	Field and Description
static String	CLIENT_VERSION_ATTRIBUTE_NAME Attribute name in migration state item, whose value is used during the KCL v3.x migration process to know whether the workers need to perform KCL v2.x compatible operations or can perform native KCL v3.x operations.
static String	HISTORY_ATTRIBUTE_NAME
static String	MIGRATION_HASH_KEY Key value for the item in the CoordinatorState table
static String	MODIFIED_BY_ATTRIBUTE_NAME
static String	MODIFIED_TIMESTAMP_ATTRIBUTE_NAME

Fields inherited from class software.amazon.kinesis.coordinator.CoordinatorState

COORDINATOR_STATE_TABLE_HASH_KEY_ATTRIBUTE_NAME, LEADER_HASH_KEY

Constructor Summary

Constructors

Constructor and Description
MigrationState(String key, String modifiedBy)

Method Summary

Modifier and Type	Method and Description
void	addHistoryEntry(ClientVersion lastClientVersion, String lastModifiedBy, long lastModifiedTimestamp)
MigrationState	copy()
static MigrationState	deserialize(String key, HashMap<String,software.amazon.awssdk.services.dynamodb.model.AttributeValue> attributes)
Map<String,software.amazon.awssdk.services.dynamodb.model.ExpectedAttributeValue>	getDynamoClientVersionExpectation()
Map<String,software.amazon.awssdk.services.dynamodb.model.AttributeValueUpdate>	getDynamoUpdate()
HashMap<String,software.amazon.awssdk.services.dynamodb.model.AttributeValue>	serialize()
MigrationState	update(ClientVersion clientVersion, String modifiedBy)

Methods inherited from class java.lang.Object

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

Field Detail

MIGRATION_HASH_KEY

public static final String MIGRATION_HASH_KEY

Key value for the item in the CoordinatorState table

See Also:

Constant Field Values

CLIENT_VERSION_ATTRIBUTE_NAME

public static final String CLIENT_VERSION_ATTRIBUTE_NAME

Attribute name in migration state item, whose value is used during the KCL v3.x migration process to know whether the workers need to perform KCL v2.x compatible operations or can perform native KCL v3.x operations.

See Also:

Constant Field Values

MODIFIED_BY_ATTRIBUTE_NAME

public static final String MODIFIED_BY_ATTRIBUTE_NAME

See Also:

Constant Field Values

MODIFIED_TIMESTAMP_ATTRIBUTE_NAME

public static final String MODIFIED_TIMESTAMP_ATTRIBUTE_NAME

See Also:

Constant Field Values

HISTORY_ATTRIBUTE_NAME

public static final String HISTORY_ATTRIBUTE_NAME

See Also:

Constant Field Values

Constructor Detail

MigrationState

public MigrationState(String key,
                      String modifiedBy)

Method Detail

serialize

public HashMap<String,software.amazon.awssdk.services.dynamodb.model.AttributeValue> serialize()

deserialize

public static MigrationState deserialize(String key,
                                         HashMap<String,software.amazon.awssdk.services.dynamodb.model.AttributeValue> attributes)

getDynamoClientVersionExpectation

public Map<String,software.amazon.awssdk.services.dynamodb.model.ExpectedAttributeValue> getDynamoClientVersionExpectation()

copy

public MigrationState copy()

update

public MigrationState update(ClientVersion clientVersion,
                             String modifiedBy)

addHistoryEntry

public void addHistoryEntry(ClientVersion lastClientVersion,
                            String lastModifiedBy,
                            long lastModifiedTimestamp)

getDynamoUpdate

public Map<String,software.amazon.awssdk.services.dynamodb.model.AttributeValueUpdate> getDynamoUpdate()