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Motivation

Greetings,

We would like to propose adding DolphinDB as a new supported datasource in DolphinScheduler. This integration would allow users to seamlessly work with DolphinDB databases in their workflow orchestration.

Design Detail

1、Documentation additions:

• Added English and Chinese documentation for DolphinDB datasource

• Added DolphinDB connection parameter descriptions

• Added UI screenshots for both languages

2、Code changes:

• Added DolphinDB JDBC driver dependency (version 3.00.0.1)

• Added DolphinDB constants in DataSourceConstants.java: JDBC driver class: com.dolphindb.jdbc.Driver; Validation query: "select 1"; JDBC URL prefix: jdbc:dolphindb://
  3、Configuration:

• Added DolphinDB datasource module to the build

• Added documentation links in docsdev.js for both English and Chinese

4、Added new files:

• DolphinDB datasource implementation classes

• Test classes for DolphinDB datasource

• UI related changes for DolphinDB support

The commit adds full DolphinDB integration as a new datasource type in DolphinScheduler with complete documentation, implementation, and testing support.

Compatibility, Deprecation, and Migration Plan

No response

Test Plan

1. Unit Tests
   Test DolphinDB datasource connection parameters validation
   Test DolphinDB connection creation and pooling
   Test JDBC driver loading and configuration
   Test datasource processor functionality
   Test channel factory implementation
   Test utility methods for DolphinDB datasource
2. Integration Tests
   Connection Testing
   Test successful connection establishment with valid credentials
   Test connection failure with invalid credentials
   Test connection timeout scenarios
   Test connection pool behavior
   Test connection string parameter variations
   Query Testing
   Test basic SELECT queries
   Test complex queries with joins
   Test query execution with different data types
   Test query timeout scenarios
   Test query error handling
   UI Testing
   Verify DolphinDB datasource form rendering
   Test form validation for required fields
   Test connection testing functionality from UI
   Verify proper display of connection status
   Test datasource creation workflow
   Test datasource editing functionality
   Test datasource deletion

Code of Conduct

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