SIENTIAPDE-1231

Enhance MinIO integration and update environment configurations

- Added MinIO configuration parameters to .env.example and values.yaml for improved storage management.
- Updated requirements.txt to include necessary libraries for MinIO support.
- Refactored Activities class to utilize Storage for MinIO interactions.
- Enhanced MLFlow class to integrate MinIO for data retrieval during model retraining.
- Introduced build_minio_config function to streamline MinIO configuration setup.
- Updated minimal_retrain workflow to support data storage in MinIO.

.env.example

@@ -26,4 +26,10 @@ MONGODB_USERNAME="mongo_user"
 MONGODB_PASSWORD="mongo_db_password"
 MONGODB_URL="my-release-mongodb.mongodb.svc.cluster.local:27017"
 MONGODB_DATABASE="sientia"
-MONGODB_TTL_INDEX_HOURS="1"
+MONGODB_TTL_INDEX_HOURS="1"
+
+MINIO_ENDPOINT_URL="http://localhost:9000"
+MINIO_ACCESS_KEY="sientia"
+MINIO_SECRET_KEY="sientia"
+MINIO_REGION_NAME="sa-east-1"
+MINIO_DEFAULT_BUCKET="sientia"

laborious/activities/activities.py

@@ -1,7 +1,7 @@
 from temporalio import activity, workflow
 
 with workflow.unsafe.imports_passed_through():
-    from sientia_do.temporal.activities.postgres import Postgres
+    from laborious.activities.storage import Storage
     from sientia_do.notifications.handlers import CoreNotificationHandler as NotificationHandler
     from sientia_do.observability.logger import Logger
     from laborious.activities.mlflow import MLFlow
@@ -10,7 +10,7 @@ with workflow.unsafe.imports_passed_through():
     from typing import Any
 
 
-class Activities(Postgres, MLFlow, Gates, OPC):
+class Activities(Storage, MLFlow, Gates, OPC):
     """
     Main activities orchestrator for the Laborious system.
 
@@ -35,6 +35,7 @@ class Activities(Postgres, MLFlow, Gates, OPC):
     def __init__(self,
                  postgres_config: dict[str, Any],
                  mlflow_config: dict[str, Any],
+                 minio_config: dict[str, Any],
                  opc_config: dict[str, Any],
                  logger: Logger,
                  notification_handler: NotificationHandler):
@@ -58,20 +59,22 @@ class Activities(Postgres, MLFlow, Gates, OPC):
             Exception: If any parent class initialization fails
         """
         # Initialize parent classes
-        Postgres.__init__(self, host=postgres_config['host'],
+        Storage.__init__(self, host=postgres_config['host'],
-                          port=postgres_config['port'],
+                         port=postgres_config['port'],
-                          user=postgres_config['user'],
+                         user=postgres_config['user'],
-                          password=postgres_config['password'],
+                         password=postgres_config['password'],
-                          dbname=postgres_config['dbname'],
+                         dbname=postgres_config['dbname'],
-                          min_connections=postgres_config['min_connections'],
+                         min_connections=postgres_config['min_connections'],
-                          max_connections=postgres_config['max_connections'],
+                         max_connections=postgres_config['max_connections'],
-                          logger=logger,
+                         minio_config=minio_config,
-                          notification_handler=notification_handler)
+                         logger=logger,
+                         notification_handler=notification_handler)
 
         MLFlow.__init__(self, mlflow_host=mlflow_config['host'],
                         mlflow_port=mlflow_config['port'],
                         mlflow_username=mlflow_config['username'],
                         mlflow_password=mlflow_config['password'],
+                        minio_config=minio_config,
                         logger=logger,
                         notification_handler=notification_handler)
 
@@ -95,5 +98,5 @@ class Activities(Postgres, MLFlow, Gates, OPC):
         The method should be called before the application terminates to ensure
         proper resource cleanup and prevent resource leaks.
         """
-        Postgres.close(self)
+        Storage.close(self)
         await OPC.shutdown(self)

laborious/activities/mlflow.py

@@ -1,9 +1,9 @@
+from sientia_do.temporal.constants import DATETIME_FORMAT_MS_WITH_TZ, now
 from temporalio import activity, workflow
 
 
 with workflow.unsafe.imports_passed_through():
-    from datetime import datetime
+    from pandas import to_datetime
-    from pandas import Timestamp, to_datetime
     from sientia_do.temporal.constants import DATETIME_FORMAT, DATETIME_FORMAT_WITH_TZ
     from sientia_do.temporal.activities.base import BaseActivity
     from sientia_do.notifications.handlers import CoreNotificationHandler as NotificationHandler
@@ -15,6 +15,7 @@ with workflow.unsafe.imports_passed_through():
     import numpy as np
     from pandas import DataFrame
     import traceback
+    from laborious.utils.repository.minio_repository import MinioRepository
 
 
 class MLFlow(BaseActivity):
@@ -37,7 +38,8 @@ class MLFlow(BaseActivity):
     """
 
     def __init__(self, mlflow_host: str, mlflow_port: int, mlflow_username: str,
-                 mlflow_password: str, logger: Logger, notification_handler: NotificationHandler):
+                 minio_config: dict[str, Any], mlflow_password: str,
+                 logger: Logger, notification_handler: NotificationHandler):
         """
         Initialize MLFlow activities with server configuration.
 
@@ -63,6 +65,26 @@ class MLFlow(BaseActivity):
             f"{mlflow_host}:{mlflow_port}", mlflow_username, mlflow_password, logger
         )
 
+        if not hasattr(self, 'minio_repository'):
+            self.minio_repository = MinioRepository(
+                logger=logger,
+                notification_handler=notification_handler,
+                minio_endpoint_url=minio_config['endpoint_url'],
+                minio_access_key=minio_config['access_key'],
+                minio_secret_key=minio_config['secret_key'],
+                minio_region_name=minio_config['region_name'],
+                minio_default_bucket=minio_config['default_bucket'])
+
+        if self.minio_repository is None:
+            self.minio_repository = MinioRepository(
+                logger=logger,
+                notification_handler=notification_handler,
+                minio_endpoint_url=minio_config['endpoint_url'],
+                minio_access_key=minio_config['access_key'],
+                minio_secret_key=minio_config['secret_key'],
+                minio_region_name=minio_config['region_name'],
+                minio_default_bucket=minio_config['default_bucket'])
+
     @activity.defn(name="request_transform")
     async def request_transform(self, input_data: dict[str, Any]) -> dict[str, Any]:
         """
@@ -223,7 +245,35 @@ class MLFlow(BaseActivity):
             Exception: If retraining fails or encounters critical errors
         """
         metadata = input_data['metadata']
-        data = DataFrame(input_data['data'])
+        object_key = input_data['object_key']
+
+        self.info(f'Loading retrain data from Key: {object_key}', metadata)
+
+        try:
+
+            data = self.minio_repository.get_parquet_as_dataframe(
+                object_key=object_key, metadata=metadata)
+        except Exception as e:
+            trace = traceback.format_exc()
+            self.send_notification(
+                metadata=metadata,
+                notification_id='ERROR_LOADING_RETRAIN_DATA',
+                message=f'Error loading retrain data: {e}',
+                block='retrain_model',
+                level=NotificationLevel.ERROR,
+                attachment_content=trace
+            )
+            self.error(trace, metadata)
+            return {
+                'success': False,
+                'message': f'Error loading retrain data: {e}',
+                'traceback': trace,
+                'timestamp': now().strftime(DATETIME_FORMAT_MS_WITH_TZ)
+            }
+
+        self.debug(
+            f'Retrain data loaded successfully: shape {data.shape}', metadata)
+
         model_name = input_data['model_name']
         model_config = input_data.get('model_config', {})
 

laborious/activities/storage.py

@@ -0,0 +1,142 @@
+from temporalio import activity, workflow
+
+from laborious.utils.repository.minio_repository import MinioRepository
+
+
+with workflow.unsafe.imports_passed_through():
+    # Extend the Temporal Postgres activities for convenient query -> MinIO export
+    from sientia_do.temporal.activities.postgres import Postgres
+    from sientia_do.notifications.handlers import CoreNotificationHandler as NotificationHandler
+    from sientia_do.observability.logger import Logger
+    from sientia_do.temporal.constants import now
+    from sientia_do.notifications.models import NotificationLevel
+    from typing import Any
+    import traceback
+    import pandas as pd
+
+DATETIME_FILENAME_FORMAT = "%Y-%m-%d_%H-%M-%S"
+
+
+class Storage(Postgres):
+    """
+    Extensions for Postgres activities with a helper to export query results
+    directly to MinIO as Parquet and return the object name.
+    """
+
+    def __init__(self,
+                 host: str,
+                 port: int,
+                 user: str,
+                 password: str,
+                 dbname: str,
+                 min_connections: int,
+                 max_connections: int,
+                 minio_config: dict[str, Any],
+                 logger: Logger,
+                 notification_handler: NotificationHandler):
+        super().__init__(host=host,
+                         port=port,
+                         user=user,
+                         password=password,
+                         dbname=dbname,
+                         min_connections=min_connections,
+                         max_connections=max_connections,
+                         logger=logger,
+                         notification_handler=notification_handler)
+
+        if not hasattr(self, 'minio_repository'):
+            self.minio_repository = MinioRepository(
+                logger=logger,
+                notification_handler=notification_handler,
+                minio_endpoint_url=minio_config['endpoint_url'],
+                minio_access_key=minio_config['access_key'],
+                minio_secret_key=minio_config['secret_key'],
+                minio_region_name=minio_config['region_name'],
+                minio_default_bucket=minio_config['default_bucket'])
+
+        if self.minio_repository is None:
+            self.minio_repository = MinioRepository(
+                logger=logger,
+                notification_handler=notification_handler,
+                minio_endpoint_url=minio_config['endpoint_url'],
+                minio_access_key=minio_config['access_key'],
+                minio_secret_key=minio_config['secret_key'],
+                minio_region_name=minio_config['region_name'],
+                minio_default_bucket=minio_config['default_bucket'])
+
+    @activity.defn(name='query_to_minio')
+    async def query_to_minio(self, input_data: dict[str, Any]) -> dict[str, Any]:
+        """
+        Execute SQL query, write result as Parquet to MinIO, and return object name.
+
+        Args (input_data):
+            metadata (dict): Workflow metadata
+            query (str): SQL query
+            model_name (str): Model name for object naming
+            object_prefix (str, optional): Prefix inside bucket (default: datasets/retrain)
+
+        Returns:
+            dict: { success: bool, object_name: str, uri: str }
+        """
+
+        metadata = input_data.get('metadata', {})
+        object_prefix = input_data.get('object_prefix', 'datasets/retrain')
+
+        timestamp = now().strftime(DATETIME_FILENAME_FORMAT)
+        object_name = f"{object_prefix}_{timestamp}.parquet"
+        uri = f"s3://{self.minio_repository.minio_bucket}/{object_name}"
+
+        try:
+            data = await self.load_custom_query(input_data)
+            if not data:
+                self.error(
+                    f"query_to_minio failed: No data returned from query", metadata)
+                return {"success": False, "message": "No data returned from query"}
+
+            # Ensure we have a DataFrame
+            data = pd.DataFrame(data)
+
+            # Write parquet to memory and upload via persistent client
+            self.minio_repository.store_dataframe_as_parquet(
+                dataframe=data,
+                uri=uri,
+                object_name=object_name,
+                metadata=metadata
+            )
+
+            return {"success": True, "object_key": object_name, "uri": uri}
+        except Exception as e:
+            trace = traceback.format_exc()
+            self.send_notification(
+                metadata=metadata,
+                notification_id="ERROR_LOADING_CUSTOM_QUERY",
+                message=f"Error fetching data from query: {e}",
+                block="load_custom_query",
+                level=NotificationLevel.ERROR,
+                attachment_content=trace
+            )
+
+            self.error(trace, metadata)
+
+            return {"success": False, "message": str(e)}
+
+    def close(self) -> None:
+        """Close Storage resources (MinIO client and Postgres engine)."""
+        try:
+            if hasattr(self, 's3_client') and self.s3_client is not None:
+                try:
+                    self.s3_client.close()
+                finally:
+                    self.s3_client = None
+        finally:
+            # Ensure Postgres resources are disposed as well
+            try:
+                super().close()
+            except Exception:
+                pass
+
+    def __del__(self):
+        try:
+            self.close()
+        except Exception:
+            pass

laborious/utils/connectors_config.py

@@ -127,3 +127,26 @@ def build_mongodb_config() -> Dict[str, Any]:
         'database_name': getenv('MONGODB_DATABASE_NAME', 'sientia'),
         'ttl_index_seconds': int(getenv('MONGODB_TTL_INDEX_HOURS', '1')) * 3600
     }
+
+
+def build_minio_config() -> Dict[str, Any]:
+    """
+    Build MinIO (S3-compatible) configuration from environment variables.
+
+    Environment Variables:
+        MINIO_ENDPOINT: MinIO endpoint including scheme (default: http://localhost:9000)
+        MINIO_ACCESS_KEY: Access key (default: minioadmin)
+        MINIO_SECRET_KEY: Secret key (default: minioadmin)
+        MINIO_REGION: Region name for S3 client (default: us-east-1)
+        MINIO_BUCKET_DEFAULT: Default bucket for uploads (default: laborious)
+
+    Returns:
+        dict: MinIO configuration dictionary
+    """
+    return {
+        'endpoint_url': getenv('MINIO_ENDPOINT_URL', 'http://localhost:9000'),
+        'access_key': getenv('MINIO_ACCESS_KEY', 'minioadmin'),
+        'secret_key': getenv('MINIO_SECRET_KEY', 'minioadmin'),
+        'region_name': getenv('MINIO_REGION_NAME', 'us-east-1'),
+        'default_bucket': getenv('MINIO_DEFAULT_BUCKET', 'laborious')
+    }

laborious/utils/repository/minio_repository.py

@@ -0,0 +1,115 @@
+from io import BytesIO
+import traceback
+import boto3
+from botocore.config import Config
+from pandas import DataFrame, read_parquet
+from sientia_do.observability.logger import Logger
+from sientia_do.notifications.handlers import CoreNotificationHandler as NotificationHandler
+from sientia_do.notifications.models import NotificationLevel
+from typing import Any
+from botocore.exceptions import ClientError
+
+
+class MinioRepository():
+    def __init__(self,
+                 minio_endpoint_url: str,
+                 minio_access_key: str,
+                 minio_secret_key: str,
+                 minio_region_name: str,
+                 minio_default_bucket: str,
+                 logger: Logger,
+                 notification_handler: NotificationHandler):
+
+        # MinIO settings shared with pandas s3fs
+        self.storage_options = {
+            'key': minio_access_key,
+            'secret': minio_secret_key,
+            'client_kwargs': {'endpoint_url': minio_endpoint_url}
+        }
+        self.minio_bucket = minio_default_bucket
+        self.minio_endpoint_url = minio_endpoint_url
+        self.minio_region_name = minio_region_name
+
+        logger.info(
+            f"Connecting to MinIO at {self.minio_endpoint_url}, default bucket: {self.minio_bucket}")
+
+        # Reusable MinIO client
+        self.s3_client = boto3.client(
+            's3',
+            endpoint_url=self.minio_endpoint_url,
+            aws_access_key_id=self.storage_options['key'],
+            aws_secret_access_key=self.storage_options['secret'],
+            region_name=self.minio_region_name,
+            config=Config(
+                signature_version='s3v4',
+                s3={'addressing_style': 'path'},
+                retries={'max_attempts': 5, 'mode': 'standard'},
+                connect_timeout=5,
+                read_timeout=120,
+            ),
+        )
+        self._bucket_checked = False
+
+        self.logger = logger
+        self.notification_handler = notification_handler
+
+    def ensure_bucket_exists(self, metadata: dict[str, Any]) -> bool:
+        """
+        Ensure the MinIO bucket exists; create it if necessary.
+        """
+        if self._bucket_checked:
+            return True
+
+        try:
+            self.logger.custom_info(
+                f"Checking if bucket '{self.minio_bucket}' exists", metadata)
+            self.s3_client.head_bucket(Bucket=self.minio_bucket)
+            self._bucket_checked = True
+            return True
+        except ClientError:
+            try:
+                self.logger.custom_info(
+                    f"Creating bucket '{self.minio_bucket}'", metadata)
+                self.s3_client.create_bucket(Bucket=self.minio_bucket)
+                self._bucket_checked = True
+                return True
+            except ClientError as ce:
+                trace = traceback.format_exc()
+                self.notification_handler.send_notification(
+                    metadata=metadata,
+                    notification_id="ERROR_CREATING_MINIO_BUCKET",
+                    message=f"Failed to ensure bucket '{self.minio_bucket}': {ce}",
+                    block="ensure_bucket_exists",
+                    level=NotificationLevel.ERROR,
+                    attachment_content=str(ce)
+                )
+                self.logger.custom_error(trace, metadata)
+                return False
+
+    def store_dataframe_as_parquet(self, dataframe: DataFrame, uri: str,
+                                   object_name: str, metadata: dict[str, Any]):
+
+        self.ensure_bucket_exists(metadata)
+
+        self.logger.custom_info(
+            f"Storing dataframe as parquet in {uri}", metadata)
+
+        buffer = BytesIO()
+        dataframe.to_parquet(buffer, engine='pyarrow', index=True)
+        buffer.seek(0)
+        self.s3_client.put_object(
+            Bucket=self.minio_bucket, Key=object_name, Body=buffer.getvalue())
+
+        self.logger.custom_info(
+            f"Dataframe stored as parquet in {uri}", metadata)
+
+    def get_parquet_as_dataframe(self, object_key: str, metadata: dict[str, Any]) -> DataFrame:
+        self.logger.custom_info(
+            f"Getting parquet as dataframe from {object_key}", metadata)
+
+        response = self.s3_client.get_object(
+            Bucket=self.minio_bucket, Key=object_key)
+
+        # Read the content into a BytesIO buffer to support seek operations
+        buffer = BytesIO(response['Body'].read())
+        return read_parquet(buffer)

laborious/utils/repository/model_repository.py

@@ -244,7 +244,7 @@ class MLFlowRepository():
             output_dir
         )
 
-    def load_predict_model(self, model_name: str, flavor: str = 'pyfunc',
+    def load_predict_model(self, model_name: str, flavor: str = 'sklearn',
                            artifact_path: str | None = None) -> Any:
         """
         Downloads a predictive model from the MLflow Model Registry.
@@ -386,7 +386,7 @@ class MLFlowRepository():
             f"Could not load model from {pickle_path} - unknown or corrupted format")
 
     def download_model(self, model_name: str, model_type: str, flavor: str,
-                       download_artifacts: bool = False) -> Any:
+                       download_artifacts: bool = False) -> tuple[Any, str]:
         """
         Download model based on type (predict or transform).
 
@@ -397,7 +397,7 @@ class MLFlowRepository():
             download_artifacts (bool): Whether to download artifacts
 
         Returns:
-            Any: Model object
+            tuple[Any, str]: Model object and artifact path if model is compressed
         """
 
         self.logger.info(
@@ -422,7 +422,7 @@ class MLFlowRepository():
             model = self.load_transform_model(
                 model_name, flavor, artifact_path)
 
-        return model
+        return model, artifact_path
 
     """
     Functions related to data format
@@ -633,9 +633,9 @@ class MLFlowRepository():
     """
 
     def create_model_experiment(self, model_name: str, data: pd.DataFrame,
-                                transform_flavor: str = 'sklearn', predict_flavor: str = 'pyfunc',
+                                transform_config: dict = {}, predict_config: dict = {},
                                 fit_config: dict = {}, target_name: str = None,
-                                metadata: dict = {}) -> tuple:
+                                is_compressed: bool = False, metadata: dict = {}) -> tuple:
         """
         Create a new MLFlow experiment for model retraining.
 
@@ -649,10 +649,11 @@ class MLFlowRepository():
         Args:
             model_name (str): Name of the MLFlow model to retrain
             data (pd.DataFrame): Training data for model retraining
-            transform_flavor (str): Flavor for transformation model
+            transform_config (dict): Configuration for transformation model
-            predict_flavor (str): Flavor for prediction model
+            predict_config (dict): Configuration for prediction model
             fit_config (dict): Fit configuration
             target_name (str): Target name
+            is_compressed (bool): Whether model is compressed
             metadata (dict): Metadata for logging
 
         Returns:
@@ -664,7 +665,7 @@ class MLFlowRepository():
         self.logger.custom_info(
             f"Starting model experiment creation for {model_name}", metadata)
         self.logger.custom_debug(
-            f"Model configuration - transform_flavor: {transform_flavor}, predict_flavor: {predict_flavor}, fit_config: {fit_config}, target_name: {target_name}", metadata)
+            f"Model configuration - transform_config: {transform_config}, predict_config: {predict_config}, fit_config: {fit_config}, target_name: {target_name}", metadata)
 
         latest_production_id = self.get_model_run_id(
             model_name, stage="Production"
@@ -675,17 +676,24 @@ class MLFlowRepository():
         self.logger.custom_info(
             f"Loading transformation model for {model_name}", metadata)
 
-        data_model = self.download_model(
+        transform_flavor = transform_config.get('flavor', 'sklearn')
+        transformed_is_compressed = transform_config.get(
+            'is_compressed', False)
+
+        data_model, data_artifact_path = self.download_model(
             model_name=model_name, model_type="transform", flavor=transform_flavor,
-            download_artifacts=(transform_flavor == 'pyfunc')
+            download_artifacts=transformed_is_compressed
         )
 
         self.logger.custom_info(
             f"Loading prediction model for {model_name}", metadata)
 
-        prediction_model = self.download_model(
+        predict_flavor = predict_config.get('flavor', 'pyfunc')
+        predicted_is_compressed = predict_config.get('is_compressed', False)
+
+        prediction_model, prediction_artifact_path = self.download_model(
             model_name=model_name, model_type="predict", flavor=predict_flavor,
-            download_artifacts=(predict_flavor == 'pyfunc')
+            download_artifacts=predicted_is_compressed
         )
 
         self.logger.custom_debug(
@@ -784,14 +792,36 @@ class MLFlowRepository():
 
         self.logger.custom_info(
             f"Model experiment creation completed successfully for {model_name}", metadata)
-        return prediction_model, data_model, experiment
+
+        retrain_data = {
+            'prediction_model': prediction_model,
+            'prediction_artifact_path': prediction_artifact_path,
+            'data_model': data_model,
+            'data_artifact_path': data_artifact_path,
+            'experiment': experiment
+        }
+        return retrain_data
+
+    def log_model(self, model: Any, artifact_local_path: str, flavor: str, model_type: str):
+        if artifact_local_path:
+            mlflow.log_artifact(artifact_local_path, artifact_path="")
+        else:
+            if flavor == 'sklearn':
+                mlflow.sklearn.log_model(model, model_type)
+            elif flavor == 'pyfunc':
+                mlflow.pyfunc.log_model(model, model_type)
+            elif flavor == 'pytorch':
+                mlflow.pytorch.log_model(model, model_type)
+            else:
+                raise ValueError(
+                    "Invalid flavor. Use 'sklearn' or 'pyfunc' or 'pytorch'.")
 
     def perform_model_retrain(self,
-                              prediction_model,
-                              data_model,
-                              experiment: str,
                               model_name: str,
                               data: pd.DataFrame,
+                              retrain_data: dict,
+                              transform_config: dict = {},
+                              predict_config: dict = {},
                               metadata: dict = {}):
         """
         Execute the complete model retraining process in MLFlow.
@@ -809,6 +839,7 @@ class MLFlowRepository():
             experiment (str): MLFlow experiment name for the retraining
             model_name (str): Name of the model being retrained
             data (pd.DataFrame): Training data used for retraining
+            is_compressed (bool): Whether model is compressed
             metadata (dict): Metadata for logging
 
         Returns:
@@ -816,9 +847,19 @@ class MLFlowRepository():
                 - status_message (str): Success confirmation message
                 - experiment_name (str): Name of the experiment
         """
+
+        prediction_model = retrain_data['prediction_model']
+        data_model = retrain_data['data_model']
+        experiment = retrain_data['experiment']
+        prediction_artifact_path = retrain_data['prediction_artifact_path']
+        data_artifact_path = retrain_data['data_artifact_path']
+
         self.logger.custom_info(
             f"Starting model retraining process for {model_name} in experiment {experiment}", metadata)
 
+        transform_flavor = transform_config.get('flavor', 'sklearn')
+        predict_flavor = predict_config.get('flavor', 'sklearn')
+
         pred_model_atributes = vars(prediction_model)  # load class attributes
         data_model_atributes = vars(data_model)  # load class attributes
         experiment_description = f"Retrain model {model_name} with new data"
@@ -845,7 +886,8 @@ class MLFlowRepository():
                 mlflow.log_param(name_atribute, val_atribute)
 
             # dynamic parameters, including model itself
-            mlflow.sklearn.log_model(data_model, "data_model")
+            self.log_model(data_model, data_artifact_path,
+                           transform_flavor, "data_model")
 
             makedirs("tmp/retrain_data", exist_ok=True)
 
@@ -856,7 +898,8 @@ class MLFlowRepository():
             mlflow.log_artifact(file_path)
 
             # dynamic parameters, including model itself
-            mlflow.sklearn.log_model(prediction_model, "prediction_model")
+            self.log_model(prediction_model, prediction_artifact_path,
+                           predict_flavor, "prediction_model")
             mlflow.log_param("retrain", True)
 
             # clear temp file
@@ -1044,7 +1087,7 @@ class MLFlowRepository():
         """
 
         model_retention = model_config.get('retention_minutes', 0)
-        flavor = model_config.get('predict_flavor', 'pyfunc')
+        flavor = model_config.get('predict_flavor', 'sklearn')
 
         try:
 
@@ -1147,8 +1190,8 @@ class MLFlowRepository():
 
         target_name = model_config.get('target', None)
 
-        transform_flavor = model_config.get('transform_flavor', 'sklearn')
+        transform_config = model_config.get('transform_config', {})
-        predict_flavor = model_config.get('predict_flavor', 'pyfunc')
+        predict_config = model_config.get('predict_config', {})
 
         fit_config = {
             'split_fit_data': model_config.get('split_fit_data', False),
@@ -1157,21 +1200,19 @@ class MLFlowRepository():
         }
 
         self.logger.custom_debug(
-            f"Model configuration - transform_flavor: {transform_flavor}, predict_flavor: {predict_flavor}, fit_config: {fit_config}, target_name: {target_name}", metadata)
+            f"Model configuration - transform_config: {transform_config}, predict_config: {predict_config}, fit_config: {fit_config}, target_name: {target_name}", metadata)
 
         try:
             self.logger.custom_info(
                 "Creating model experiment environment", metadata)
-            prediction_model, data_model, experiment = self.create_model_experiment(
+            retrain_data = self.create_model_experiment(
-                model_name=model_name, data=data, transform_flavor=transform_flavor,
+                model_name=model_name, data=data, transform_config=transform_config, predict_config=predict_config, fit_config=fit_config, target_name=target_name, metadata=metadata)
-                predict_flavor=predict_flavor, fit_config=fit_config, target_name=target_name,
-                metadata=metadata)
             self.logger.custom_info(
-                f"Model experiment created successfully: {experiment}", metadata)
+                f"Model experiment created successfully: {retrain_data}", metadata)
 
             self.logger.custom_info("Saving model retrain", metadata)
             experiment = self.perform_model_retrain(
-                prediction_model, data_model, experiment, model_name, data, metadata)
+                model_name, data, retrain_data, transform_config, predict_config, metadata)
             self.logger.custom_info(
                 f"Model retraining completed successfully for experiment: {experiment}", metadata)
 

laborious/worker/worker.py

@@ -44,6 +44,7 @@ with workflow.unsafe.imports_passed_through():
     from laborious.utils.connectors_config import (
         build_postgres_config,
         build_mlflow_config,
+        build_minio_config,
         build_opc_config,
         build_mongodb_config
     )
@@ -152,6 +153,7 @@ async def main():
     activities = Activities(
         postgres_config=build_postgres_config(),
         mlflow_config=build_mlflow_config(),
+        minio_config=build_minio_config(),
         opc_config=build_opc_config(),
         logger=logger,
         notification_handler=notification_handler
@@ -190,6 +192,7 @@ async def main():
             workflows=[MinimalRetrain],
             activities=[
                 activities.load_custom_query,
+                activities.query_to_minio,
                 activities.retrain_model,
                 activities.update_production_model,
                 activities.format_retrain_report,
@@ -211,6 +214,7 @@ async def main():
                 # MLFlow
                 activities.request_predict,
                 activities.request_transform,
+                activities.query_to_minio,
                 # Gates
                 activities.input_gate,
                 activities.mlflow_response_gate,

laborious/workflows/minimal_retrain.py

@@ -70,22 +70,27 @@ class MinimalRetrain():
         model_name = input_data['model_name']
         model_config = input_data.get('model_config', {})
 
-        data = await workflow.execute_local_activity_method(
+        storage_result = await workflow.execute_local_activity_method(
-            Activities.load_custom_query,
+            Activities.query_to_minio,
             {
                 **metadata,
                 'query': input_data['query'],
-                'datetime_columns': input_data.get('datetime_columns', [])
+                'datetime_columns': input_data.get('datetime_columns', []),
+                'model_name': model_name,
+                'object_prefix': f'retrain_datasets/{model_name}/data'
             },
             retry_policy=retry_policy,
             start_to_close_timeout=timedelta(seconds=600)
         )
 
+        if not storage_result['success']:
+            return
+
         experiment_response = await workflow.execute_activity_method(
             Activities.retrain_model,
             {
                 **metadata,
-                'data': data,
+                'object_key': storage_result['object_key'],
                 'model_name': model_name,
                 'model_config': model_config
             },

requirements.txt

@@ -6,3 +6,7 @@ redis
 git+ssh://git@github.com/Aignosi/sientia-dataops-library.git@1.4.6
 git+ssh://git@github.com/Aignosi/sientia-mlops-library.git@0.39.0
 prometheus-client
+botocore
+boto3
+s3fs
+pyarrow

values.yaml

@@ -213,6 +213,17 @@ env:
   - name: MONGODB_TTL_INDEX_HOURS
     value: "1"
 
+  - name: MINIO_ENDPOINT_URL
+    value: "http://sientia-minio-minio.sientia.svc.cluster.local:9000"
+  - name: MINIO_ACCESS_KEY
+    value: "admin"
+  - name: MINIO_SECRET_KEY
+    value: "FvcxOPX55j"
+  - name: MINIO_REGION_NAME
+    value: "sa-east-1"
+  - name: MINIO_DEFAULT_BUCKET
+    value: "sientia"
+
 ssh:
   enabled: true
   secretName: git-ssh-key-sientia-laborious-worker