feat: Add InterSystems IRIS vector database support (#29480)

Co-authored-by: Tomo Okuyama <tomo.okuyama@intersystems.com>

api/configs/middleware/__init__.py

@@ -26,6 +26,7 @@ from .vdb.clickzetta_config import ClickzettaConfig
 from .vdb.couchbase_config import CouchbaseConfig
 from .vdb.elasticsearch_config import ElasticsearchConfig
 from .vdb.huawei_cloud_config import HuaweiCloudConfig
+from .vdb.iris_config import IrisVectorConfig
 from .vdb.lindorm_config import LindormConfig
 from .vdb.matrixone_config import MatrixoneConfig
 from .vdb.milvus_config import MilvusConfig
@@ -336,6 +337,7 @@ class MiddlewareConfig(
     ChromaConfig,
     ClickzettaConfig,
     HuaweiCloudConfig,
+    IrisVectorConfig,
     MilvusConfig,
     AlibabaCloudMySQLConfig,
     MyScaleConfig,

api/configs/middleware/vdb/iris_config.py

@@ -0,0 +1,91 @@
+"""Configuration for InterSystems IRIS vector database."""
+
+from pydantic import Field, PositiveInt, model_validator
+from pydantic_settings import BaseSettings
+
+
+class IrisVectorConfig(BaseSettings):
+    """Configuration settings for IRIS vector database connection and pooling."""
+
+    IRIS_HOST: str | None = Field(
+        description="Hostname or IP address of the IRIS server.",
+        default="localhost",
+    )
+
+    IRIS_SUPER_SERVER_PORT: PositiveInt | None = Field(
+        description="Port number for IRIS connection.",
+        default=1972,
+    )
+
+    IRIS_USER: str | None = Field(
+        description="Username for IRIS authentication.",
+        default="_SYSTEM",
+    )
+
+    IRIS_PASSWORD: str | None = Field(
+        description="Password for IRIS authentication.",
+        default="Dify@1234",
+    )
+
+    IRIS_SCHEMA: str | None = Field(
+        description="Schema name for IRIS tables.",
+        default="dify",
+    )
+
+    IRIS_DATABASE: str | None = Field(
+        description="Database namespace for IRIS connection.",
+        default="USER",
+    )
+
+    IRIS_CONNECTION_URL: str | None = Field(
+        description="Full connection URL for IRIS (overrides individual fields if provided).",
+        default=None,
+    )
+
+    IRIS_MIN_CONNECTION: PositiveInt = Field(
+        description="Minimum number of connections in the pool.",
+        default=1,
+    )
+
+    IRIS_MAX_CONNECTION: PositiveInt = Field(
+        description="Maximum number of connections in the pool.",
+        default=3,
+    )
+
+    IRIS_TEXT_INDEX: bool = Field(
+        description="Enable full-text search index using %iFind.Index.Basic.",
+        default=True,
+    )
+
+    IRIS_TEXT_INDEX_LANGUAGE: str = Field(
+        description="Language for full-text search index (e.g., 'en', 'ja', 'zh', 'de').",
+        default="en",
+    )
+
+    @model_validator(mode="before")
+    @classmethod
+    def validate_config(cls, values: dict) -> dict:
+        """Validate IRIS configuration values.
+
+        Args:
+            values: Configuration dictionary
+
+        Returns:
+            Validated configuration dictionary
+
+        Raises:
+            ValueError: If required fields are missing or pool settings are invalid
+        """
+        # Only validate required fields if IRIS is being used as the vector store
+        # This allows the config to be loaded even when IRIS is not in use
+
+        # vector_store = os.environ.get("VECTOR_STORE", "")
+        # We rely on Pydantic defaults for required fields if they are missing from env.
+        # Strict existence check is removed to allow defaults to work.
+
+        min_conn = values.get("IRIS_MIN_CONNECTION", 1)
+        max_conn = values.get("IRIS_MAX_CONNECTION", 3)
+        if min_conn > max_conn:
+            raise ValueError("IRIS_MIN_CONNECTION must be less than or equal to IRIS_MAX_CONNECTION")
+
+        return values