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## Summary This PR adds Peewee ORM support for OceanBase as the primary database in RAGFlow, as requested in issue #12769. ## Changes ### Core Implementation 1. **RetryingPooledOceanBaseDatabase Class** - Inherits from `PooledMySQLDatabase` (OceanBase is MySQL-compatible) - Implements retry mechanism for connection issues - Handles MySQL-specific error codes (2013, 2006 for connection loss) - Provides connection pool management 2. **PooledDatabase Enum** - Added `OCEANBASE = RetryingPooledOceanBaseDatabase` 3. **DatabaseLock Enum** - Added `OCEANBASE = MysqlDatabaseLock` - OceanBase uses MySQL-style locking 4. **TextFieldType Enum** - Added `OCEANBASE = "LONGTEXT"` - OceanBase uses same text field type as MySQL 5. **DatabaseMigrator Enum** - Added `OCEANBASE = MySQLMigrator` - OceanBase uses MySQL migration tools ### Usage ```bash # Set environment variable to use OceanBase export DB_TYPE=oceanbase # Configure connection (in docker/.env or environment) OCEANBASE_HOST=localhost OCEANBASE_PORT=2881 OCEANBASE_USER=root OCEANBASE_PASSWORD=password OCEANBASE_DATABASE=ragflow ``` ### Technical Details - **Location**: `api/db/db_models.py` - **Dependencies**: No new dependencies (uses existing Peewee MySQL support) - **Code Size**: ~90 lines - **Difficulty**: Simple ### Testing - Added comprehensive unit tests in `tests/unit/test_oceanbase_peewee.py` - Tests cover: - OceanBase database class existence and inheritance - Enum values for PooledDatabase, DatabaseLock, TextFieldType - Initialization with custom retry settings - Environment variable configuration ### Acceptance Criteria ✅ Can switch to OceanBase database via `DB_TYPE=oceanbase` environment variable ✅ All database operations work normally in OceanBase environment ✅ OceanBase uses MySQL compatibility mode (no additional dependencies) ### Background This is part of the RAGFlow + OceanBase Hackathon to allow users to choose OceanBase as RAGFlow's primary database, leveraging OceanBase's high availability and scalability. --- ## Related Issues - **Primary**: https://github.com/infiniflow/ragflow/issues/12769 - **Context**: https://github.com/oceanbase/seekdb/issues/123 (OceanBase Developer Challenge) --- Closes infiniflow/ragflow#12769
128 lines
4.3 KiB
Python
128 lines
4.3 KiB
Python
"""
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Tests for OceanBase Peewee ORM support.
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"""
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import pytest
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from unittest.mock import Mock, patch, MagicMock
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from api.db.db_models import (
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RetryingPooledOceanBaseDatabase,
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PooledDatabase,
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DatabaseLock,
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TextFieldType,
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)
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class TestOceanBaseDatabase:
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"""Test cases for OceanBase database support."""
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def test_oceanbase_database_class_exists(self):
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"""Test that RetryingPooledOceanBaseDatabase class exists."""
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assert RetryingPooledOceanBaseDatabase is not None
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def test_oceanbase_in_pooled_database_enum(self):
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"""Test that OCEANBASE is in PooledDatabase enum."""
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assert hasattr(PooledDatabase, 'OCEANBASE')
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assert PooledDatabase.OCEANBASE.value == RetryingPooledOceanBaseDatabase
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def test_oceanbase_in_database_lock_enum(self):
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"""Test that OCEANBASE is in DatabaseLock enum."""
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assert hasattr(DatabaseLock, 'OCEANBASE')
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def test_oceanbase_in_text_field_type_enum(self):
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"""Test that OCEANBASE is in TextFieldType enum."""
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assert hasattr(TextFieldType, 'OCEANBASE')
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# OceanBase should use LONGTEXT like MySQL
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assert TextFieldType.OCEANBASE.value == "LONGTEXT"
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def test_oceanbase_database_inherits_mysql(self):
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"""Test that OceanBase database inherits from PooledMySQLDatabase."""
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from playhouse.pool import PooledMySQLDatabase
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assert issubclass(RetryingPooledOceanBaseDatabase, PooledMySQLDatabase)
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def test_oceanbase_database_init(self):
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"""Test OceanBase database initialization."""
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db = RetryingPooledOceanBaseDatabase(
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"test_db",
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host="localhost",
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port=2881,
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user="root",
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password="password",
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)
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assert db is not None
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assert db.max_retries == 5 # default value
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assert db.retry_delay == 1 # default value
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def test_oceanbase_database_custom_retries(self):
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"""Test OceanBase database with custom retry settings."""
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db = RetryingPooledOceanBaseDatabase(
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"test_db",
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host="localhost",
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max_retries=10,
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retry_delay=2,
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)
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assert db.max_retries == 10
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assert db.retry_delay == 2
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def test_pooled_database_enum_values(self):
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"""Test PooledDatabase enum has all expected values."""
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expected = {'MYSQL', 'OCEANBASE', 'POSTGRES'}
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actual = {e.name for e in PooledDatabase}
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assert expected.issubset(actual), f"Missing: {expected - actual}"
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def test_database_lock_enum_values(self):
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"""Test DatabaseLock enum has all expected values."""
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expected = {'MYSQL', 'OCEANBASE', 'POSTGRES'}
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actual = {e.name for e in DatabaseLock}
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assert expected.issubset(actual), f"Missing: {expected - actual}"
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class TestOceanBaseConfiguration:
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"""Test cases for OceanBase configuration via environment variables."""
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def test_settings_default_to_mysql(self):
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"""Test that default DB_TYPE is mysql."""
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import os
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# Save original value
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original = os.environ.get('DB_TYPE')
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try:
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# Remove DB_TYPE to test default
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if 'DB_TYPE' in os.environ:
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del os.environ['DB_TYPE']
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# Reload settings
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from common import settings
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settings.DATABASE_TYPE = os.getenv("DB_TYPE", "mysql")
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assert settings.DATABASE_TYPE == "mysql"
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finally:
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# Restore original value
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if original:
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os.environ['DB_TYPE'] = original
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def test_settings_can_use_oceanbase(self):
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"""Test that DB_TYPE can be set to oceanbase."""
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import os
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# Save original value
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original = os.environ.get('DB_TYPE')
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try:
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os.environ['DB_TYPE'] = 'oceanbase'
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# Reload settings
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from common import settings
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settings.DATABASE_TYPE = os.getenv("DB_TYPE", "mysql")
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assert settings.DATABASE_TYPE == "oceanbase"
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finally:
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# Restore original value
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if original:
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os.environ['DB_TYPE'] = original
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else:
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if 'DB_TYPE' in os.environ:
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del os.environ['DB_TYPE']
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if __name__ == "__main__":
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pytest.main([__file__, "-v"])
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