Debezium MySQL Trigger

Debezium MySQL Trigger
Certified
Trigger a flow via a MySQL change data capture event periodically and create one execution per batch

If you would like to consume each message from change data capture in real-time and create one execution per message, you can use the io.kestra.plugin.debezium.mysql.RealtimeTrigger instead.

yaml
type: io.kestra.plugin.debezium.mysql.Trigger

Examples

Consume a message from a MySQL database via change data capture periodically.

yaml
id: debezium_mysql
namespace: company.team

tasks:
  - id: send_data
    type: io.kestra.plugin.core.log.Log
    message: "{{ trigger.uris }}"

triggers:
  - id: trigger
    type: io.kestra.plugin.debezium.mysql.Trigger
    snapshotMode: NEVER
    hostname: 127.0.0.1
    port: "3306"
    username: "{{ secret('MYSQL_USERNAME') }}"
    password: "{{ secret('MYSQL_PASSWORD') }}"

Properties

hostname *string

Hostname of the remote server

port *string

Port of the remote server

allowConcurrent boolean

Defaultfalse

Specifies whether a trigger is allowed to start a new execution even if a previous run is still in progress.

deleted string

DefaultADD_FIELD

Possible Values

ADD_FIELDNULLDROP

Specify how to handle deleted rows

Possible settings are:

ADD_FIELD: Add a deleted field as boolean.
NULL: Send a row with all values as null.
DROP: Don't send deleted row.

deletedFieldName string

Defaultdeleted

The name of deleted field if deleted is ADD_FIELD

excludedColumns object

An optional, comma-separated list of regular expressions that match the fully-qualified names of columns to exclude from change event record values

Fully-qualified names for columns are of the form databaseName.tableName.columnName. Do not also specify the includedColumns connector configuration property.

excludedDatabases object

An optional, comma-separated list of regular expressions that match the names of databases for which you do not want to capture changes

The connector captures changes in any database whose name is not in the excludedDatabases. Do not also set the includedDatabases connector configuration property.

excludedTables object

An optional, comma-separated list of regular expressions that match fully-qualified table identifiers for tables whose changes you do not want to capture

The connector captures changes in any table not included in excludedTables. Each identifier is of the form databaseName.tableName. Do not also specify the includedTables connector configuration property.

format string

DefaultINLINE

Possible Values

RAWINLINEWRAP

The format of the output

Possible settings are:

RAW: Send raw data from Debezium.
INLINE: Send a row like in the source with only data (remove after & before), all the columns will be present for each row.
WRAP: Send a row like INLINE but wrapped in a record field.

ignoreDdl booleanstring

Defaulttrue

Ignore DDL statement

Ignore CREATE, ALTER, DROP and TRUNCATE operations.

includedColumns object

An optional, comma-separated list of regular expressions that match the fully-qualified names of columns to include in change event record values

Fully-qualified names for columns are of the form databaseName.tableName.columnName. Do not also specify the excludedColumns connector configuration property.

includedDatabases object

An optional, comma-separated list of regular expressions that match the names of the databases for which to capture changes

The connector does not capture changes in any database whose name is not in includedDatabases. By default, the connector captures changes in all databases. Do not also set the excludedDatabases connector configuration property.

includedTables object

An optional, comma-separated list of regular expressions that match fully-qualified table identifiers of tables whose changes you want to capture

The connector does not capture changes in any table not included in includedTables. Each identifier is of the form databaseName.tableName. By default, the connector captures changes in every non-system table in each database whose changes are being captured. Do not also specify the excludedTables connector configuration property.

interval string

DefaultPT1M

Formatduration

Interval between polling.

The interval between 2 different polls of schedule, this can avoid to overload the remote system with too many calls. For most of the triggers that depend on external systems, a minimal interval must be at least PT30S. See ISO_8601 Durations for more information of available interval values.

key string

DefaultADD_FIELD

Possible Values

ADD_FIELDDROP

Specify how to handle key

Possible settings are:

ADD_FIELD: Add key(s) merged with columns.
DROP: Drop keys.

maxDuration string

The maximum duration waiting for new rows

It's not a hard limit and is evaluated every second. It is taken into account after the snapshot if any.

maxRecords integerstring

The maximum number of rows to fetch before stopping

It's not a hard limit and is evaluated every second.

maxSnapshotDuration string

DefaultPT1H

The maximum duration waiting for the snapshot to end

It's not a hard limit and is evaluated every second. The properties 'maxRecords', 'maxDuration' and 'maxWait' are evaluated only after the snapshot is done.

maxWait string

DefaultPT10S

The maximum total processing duration

It's not a hard limit and is evaluated every second. It is taken into account after the snapshot if any.

metadata string

DefaultADD_FIELD

Possible Values

ADD_FIELDDROP

Specify how to handle metadata

Possible settings are:

ADD_FIELD: Add metadata in a column named metadata.
DROP: Drop metadata.

metadataFieldName string

Defaultmetadata

The name of metadata field if metadata is ADD_FIELD

offsetsCommitMode string

DefaultON_STOP

Possible Values

ON_EACH_BATCHON_STOP

When to commit the offsets to the KV Store

ON_EACH_BATCH: after each batch of records consumed by this trigger, the offsets will be stored in the KV Store. This avoids any duplicated records being consumed but can be costly if many events are produced.
ON_STOP: when this trigger is stopped or killed, the offsets will be stored in the KV Store. This avoids any un-necessary writes to the KV Store, but if the trigger is not stopped gracefully, the KV Store value may not be updated leading to duplicated records consumption.

password string

Password on the remote server

properties object

Additional configuration properties

Any additional configuration properties that is valid for the current driver.

Properties that make Debezium or the JDBC driver load arbitrary classes, or that move Debezium's offset and schema history storage, are rejected: connector.class, converters, transforms*, predicates*, post.processors*, config.providers*, *.converter*, topic.naming.strategy, sourceinfo.struct.maker, transaction.metadata.factory, offset.storage*, the schema.history.internal backend and its Kafka client settings, and class-loading or local-file JDBC parameters under database.* / driver.* (for example socketFactory, sslfactory, queryInterceptors, autoDeserialize, allowLoadLocalInfile).

serverId string

A numeric ID of this database client

This must be unique across all currently-running database processes in the MySQL cluster. This connector joins the MySQL database cluster as another server (with this unique ID) so it can read the binlog. By default, a random number between 5400 and 6400 is generated, though the recommendation is to explicitly set a value.

snapshotMode string

DefaultINITIAL

Possible Values

INITIALINITIAL_ONLYWHEN_NEEDEDNEVERSCHEMA_ONLYSCHEMA_ONLY_RECOVERYNO_DATAALWAYSRECOVERY

Specifies the criteria for running a snapshot when the connector starts

Possible settings are:

INITIAL: The connector runs a snapshot only when no offsets have been recorded for the logical server name.
INITIAL_ONLY: The connector runs a snapshot only when no offsets have been recorded for the logical server name and then stops; i.e. it will not read change events from the binlog.
WHEN_NEEDED: The connector runs a snapshot upon startup whenever it deems it necessary. That is, when no offsets are available, or when a previously recorded offset specifies a binlog location or GTID that is not available in the server.
NEVER: The connector never uses snapshots. Upon first startup with a logical server name, the connector reads from the beginning of the binlog. Configure this behavior with care. It is valid only when the binlog is guaranteed to contain the entire history of the database.
SCHEMA_ONLY (deprecated): The connector runs a snapshot of the schemas and not the data. This setting is useful when you do not need the topics to contain a consistent snapshot of the data but need them to have only the changes since the connector was started. Use NO_DATA instead.
SCHEMA_ONLY_RECOVERY (deprecated): This is a recovery setting for a connector that has already been capturing changes. When you restart the connector, this setting enables recovery of a corrupted or lost database history topic. You might set it periodically to "clean up" a database history topic that has been growing unexpectedly. Database history topics require infinite retention. Use RECOVERY instead.
ALWAYS: The connector performs a snapshot every time that it starts.
NO_DATA: The connector runs a snapshot that captures only the schema, but not any table data. Use this option if you do not need the topics to contain a consistent snapshot of the data.
RECOVERY: Restores a database schema history topic that is lost or corrupted by rebuilding it from the source tables.

splitTable string

DefaultTABLE

Possible Values

OFFDATABASETABLE

Split table on separate output uris

Possible settings are:

TABLE: This will split all rows by tables on output with name database.table
DATABASE: This will split all rows by databases on output with name database.
OFF: This will NOT split all rows resulting in a single data output.

stateName string

Defaultdebezium-state

The name of the Debezium state file stored in the KV Store for that namespace

stopAfter array

SubTypestring

Possible Values

CREATEDSUBMITTEDRUNNINGPAUSEDRESTARTEDKILLINGSUCCESSWARNINGFAILEDKILLEDCANCELLEDQUEUEDRETRYINGRETRIEDSKIPPEDBREAKPOINTRESUBMITTED

List of execution states after which a trigger should be stopped (a.k.a. disabled).

username string

Username on the remote server

when string

Defaulttrue

A condition that determines whether the trigger should run.

A Pebble expression evaluated at trigger time. The trigger fires only when the expression evaluates to a truthy value (true, a non-empty string, a non-zero number). Use this to gate trigger execution on dynamic runtime values such as execution labels, flow variables, or environment conditions.

Outputs

size integer

The number of fetched rows

stateOffsetKey string

The KV Store key under which the combined Debezium state (offset + schema history) is stored

Both stateOffsetKey and stateHistoryKey point to the same combined entry written atomically. The entry holds a map with keys offsets and history so both states are always consistent.