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[Feature][Connector-V2] jdbc connector supports Kingbase database (#4803
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| # Kingbase | ||
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| > JDBC Kingbase Sink Connector | ||
| ## Support Connector Version | ||
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| - 8.6 | ||
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| ## Support Those Engines | ||
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| > Spark<br/> | ||
| > Flink<br/> | ||
| > SeaTunnel Zeta<br/> | ||
| ## Key Features | ||
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| - [ ] [exactly-once](../../concept/connector-v2-features.md) | ||
| - [ ] [cdc](../../concept/connector-v2-features.md) | ||
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| ## Description | ||
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| > Use `Xa transactions` to ensure `exactly-once`. So only support `exactly-once` for the database which is | ||
| > support `Xa transactions`. You can set `is_exactly_once=true` to enable it.Kingbase currently does not support | ||
| ## Supported DataSource Info | ||
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| | Datasource | Supported versions | Driver | Url | Maven | | ||
| |------------|--------------------|----------------------|------------------------------------------|------------------------------------------------------------------------------------------------| | ||
| | Kingbase | 8.6 | com.kingbase8.Driver | jdbc:kingbase8://localhost:54321/db_test | [Download](https://repo1.maven.org/maven2/cn/com/kingbase/kingbase8/8.6.0/kingbase8-8.6.0.jar) | | ||
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| ## Database Dependency | ||
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| > Please download the support list corresponding to 'Maven' and copy it to the '$SEATNUNNEL_HOME/plugins/jdbc/lib/' | ||
| > working directory<br/> | ||
| > For example: cp kingbase8-8.6.0.jar $SEATNUNNEL_HOME/plugins/jdbc/lib/ | ||
| ## Data Type Mapping | ||
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| | Kingbase Data type | SeaTunnel Data type | | ||
| |----------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------| | ||
| | BOOL | BOOLEAN | | ||
| | INT2 | SHORT | | ||
| | SMALLSERIAL <br/>SERIAL <br/>INT4 | INT | | ||
| | INT8 <br/>BIGSERIAL | BIGINT | | ||
| | FLOAT4 | FLOAT | | ||
| | FLOAT8 | DOUBLE | | ||
| | NUMERIC | DECIMAL((Get the designated column's specified column size),<br/>(Gets the designated column's number of digits to right of the decimal point.))) | | ||
| | BPCHAR <br/>CHARACTER <br/>VARCHAR <br/>TEXT | STRING | | ||
| | TIMESTAMP | LOCALDATETIME | | ||
| | TIME | LOCALTIME | | ||
| | DATE | LOCALDATE | | ||
| | Other data type | Not supported yet | | ||
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| ## Sink Options | ||
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| | Name | Type | Required | Default | Description | | ||
| |-------------------------------------------|---------|----------|---------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ||
| | url | String | Yes | - | The URL of the JDBC connection. Refer to a case: jdbc:db2://127.0.0.1:50000/dbname | | ||
| | driver | String | Yes | - | The jdbc class name used to connect to the remote data source,<br/> if you use DB2 the value is `com.ibm.db2.jdbc.app.DB2Driver`. | | ||
| | user | String | No | - | Connection instance user name | | ||
| | password | String | No | - | Connection instance password | | ||
| | query | String | No | - | Use this sql write upstream input datas to database. e.g `INSERT ...`,`query` have the higher priority | | ||
| | database | String | No | - | Use this `database` and `table-name` auto-generate sql and receive upstream input datas write to database.<br/>This option is mutually exclusive with `query` and has a higher priority. | | ||
| | table | String | No | - | Use database and this table-name auto-generate sql and receive upstream input datas write to database.<br/>This option is mutually exclusive with `query` and has a higher priority. | | ||
| | primary_keys | Array | No | - | This option is used to support operations such as `insert`, `delete`, and `update` when automatically generate sql. | | ||
| | support_upsert_by_query_primary_key_exist | Boolean | No | false | Choose to use INSERT sql, UPDATE sql to process update events(INSERT, UPDATE_AFTER) based on query primary key exists. This configuration is only used when database unsupport upsert syntax. **Note**: that this method has low performance | | ||
| | connection_check_timeout_sec | Int | No | 30 | The time in seconds to wait for the database operation used to validate the connection to complete. | | ||
| | max_retries | Int | No | 0 | The number of retries to submit failed (executeBatch) | | ||
| | batch_size | Int | No | 1000 | For batch writing, when the number of buffered records reaches the number of `batch_size` or the time reaches `checkpoint.interval`<br/>, the data will be flushed into the database | | ||
| | is_exactly_once | Boolean | No | false | Whether to enable exactly-once semantics, which will use Xa transactions. If on, you need to<br/>set `xa_data_source_class_name`. Kingbase currently does not support | | ||
| | generate_sink_sql | Boolean | No | false | Generate sql statements based on the database table you want to write to | | ||
| | xa_data_source_class_name | String | No | - | The xa data source class name of the database Driver，Kingbase currently does not support | | ||
| | max_commit_attempts | Int | No | 3 | The number of retries for transaction commit failures | | ||
| | transaction_timeout_sec | Int | No | -1 | The timeout after the transaction is opened, the default is -1 (never timeout). Note that setting the timeout may affect<br/>exactly-once semantics | | ||
| | auto_commit | Boolean | No | true | Automatic transaction commit is enabled by default | | ||
| | common-options | | no | - | Sink plugin common parameters, please refer to [Sink Common Options](common-options.md) for details | | ||
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| ### Tips | ||
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| > If partition_column is not set, it will run in single concurrency, and if partition_column is set, it will be executed | ||
| > in parallel according to the concurrency of tasks. | ||
| ## Task Example | ||
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| ### Simple: | ||
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| > This example defines a SeaTunnel synchronization task that automatically generates data through FakeSource and sends | ||
| > it to JDBC Sink. FakeSource generates a total of 16 rows of data (row.num=16), with each row having 12 fields. The final target table is test_table will also be 16 rows of data in the table. | ||
| > Before | ||
| > run this job, you need create database test and table test_table in your Kingbase. And if you have not yet installed and | ||
| > deployed SeaTunnel, you need to follow the instructions in [Install SeaTunnel](../../start-v2/locally/deployment.md) | ||
| > to | ||
| > install and deploy SeaTunnel. And then follow the instructions | ||
| > in [Quick Start With SeaTunnel Engine](../../start-v2/locally/quick-start-seatunnel-engine.md) to run this job. | ||
| ``` | ||
| # Defining the runtime environment | ||
| env { | ||
| # You can set flink configuration here | ||
| execution.parallelism = 1 | ||
| job.mode = "BATCH" | ||
| } | ||
| source { | ||
| # This is a example source plugin **only for test and demonstrate the feature source plugin** | ||
| FakeSource { | ||
| parallelism = 1 | ||
| result_table_name = "fake" | ||
| row.num = 16 | ||
| schema = { | ||
| fields { | ||
| c_string = string | ||
| c_boolean = boolean | ||
| c_tinyint = tinyint | ||
| c_smallint = smallint | ||
| c_int = int | ||
| c_bigint = bigint | ||
| c_float = float | ||
| c_double = double | ||
| c_decimal = "decimal(30, 8)" | ||
| c_date = date | ||
| c_time = time | ||
| c_timestamp = timestamp | ||
| } | ||
| } | ||
| } | ||
| # If you would like to get more information about how to configure seatunnel and see full list of source plugins, | ||
| # please go to https://seatunnel.apache.org/docs/category/source-v2 | ||
| } | ||
| transform { | ||
| # If you would like to get more information about how to configure seatunnel and see full list of transform plugins, | ||
| # please go to https://seatunnel.apache.org/docs/category/transform-v2 | ||
| } | ||
| sink { | ||
| jdbc { | ||
| url = "jdbc:kingbase8://127.0.0.1:54321/dbname" | ||
| driver = "com.kingbase8.Driver" | ||
| user = "root" | ||
| password = "123456" | ||
| query = "insert into test_table(c_string,c_boolean,c_tinyint,c_smallint,c_int,c_bigint,c_float,c_double,c_decimal,c_date,c_time,c_timestamp) values(?,?,?,?,?,?,?,?,?,?,?,?)" | ||
| } | ||
| # If you would like to get more information about how to configure seatunnel and see full list of sink plugins, | ||
| # please go to https://seatunnel.apache.org/docs/category/sink-v2 | ||
| } | ||
| ``` | ||
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| ### Generate Sink SQL | ||
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| > This example not need to write complex sql statements, you can configure the database name table name to automatically | ||
| > generate add statements for you | ||
| ``` | ||
| sink { | ||
| jdbc { | ||
| url = "jdbc:kingbase8://127.0.0.1:54321/dbname" | ||
| driver = "com.kingbase8.Driver" | ||
| user = "root" | ||
| password = "123456" | ||
| # Automatically generate sql statements based on database table names | ||
| generate_sink_sql = true | ||
| database = test | ||
| table = test_table | ||
| } | ||
| } | ||
| ``` | ||
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