refactor: update database connections to use storage_path

Co-Authored-By: Joe Moura <joao@crewai.com>

src/crewai/memory/contextual/contextual_memory.py

@@ -1,4 +1,5 @@
 from typing import Any, Dict, Optional
+from crewai.task import Task
 
 from crewai.memory import EntityMemory, LongTermMemory, ShortTermMemory, UserMemory
 
@@ -21,7 +22,7 @@ class ContextualMemory:
         self.em = em
         self.um = um
 
-    def build_context_for_task(self, task, context) -> str:
+    def build_context_for_task(self, task: Task, context: str) -> str:
         """
         Automatically builds a minimal, highly relevant set of contextual information
         for a given task.
@@ -39,7 +40,7 @@ class ContextualMemory:
             context.append(self._fetch_user_context(query))
         return "\n".join(filter(None, context))
 
-    def _fetch_stm_context(self, query) -> str:
+    def _fetch_stm_context(self, query: str) -> str:
         """
         Fetches recent relevant insights from STM related to the task's description and expected_output,
         formatted as bullet points.
@@ -53,7 +54,7 @@ class ContextualMemory:
         )
         return f"Recent Insights:\n{formatted_results}" if stm_results else ""
 
-    def _fetch_ltm_context(self, task) -> Optional[str]:
+    def _fetch_ltm_context(self, task: str) -> Optional[str]:
         """
         Fetches historical data or insights from LTM that are relevant to the task's description and expected_output,
         formatted as bullet points.
@@ -72,7 +73,7 @@ class ContextualMemory:
 
         return f"Historical Data:\n{formatted_results}" if ltm_results else ""
 
-    def _fetch_entity_context(self, query) -> str:
+    def _fetch_entity_context(self, query: str) -> str:
         """
         Fetches relevant entity information from Entity Memory related to the task's description and expected_output,
         formatted as bullet points.

src/crewai/memory/storage/base_rag_storage.py

@@ -1,6 +1,9 @@
 from abc import ABC, abstractmethod
 from pathlib import Path
-from typing import Any, Dict, List, Optional
+import os
+from typing import Any, Dict, List, Optional, TypeVar
+from abc import ABC, abstractmethod
+from pathlib import Path
 
 from crewai.utilities.paths import db_storage_path
 
@@ -19,15 +22,42 @@ class BaseRAGStorage(ABC):
         allow_reset: bool = True,
         embedder_config: Optional[Any] = None,
         crew: Any = None,
-    ):
+    ) -> None:
+        """Initialize the BaseRAGStorage.
+
+        Args:
+            type: Type of storage being used
+            storage_path: Optional custom path for storage location
+            allow_reset: Whether storage can be reset
+            embedder_config: Optional configuration for the embedder
+            crew: Optional crew instance this storage belongs to
+        
+        Raises:
+            PermissionError: If storage path is not writable
+            OSError: If storage path cannot be created
+        """
         self.type = type
         self.storage_path = storage_path if storage_path else db_storage_path()
+        
+        # Validate storage path
+        try:
+            self.storage_path.parent.mkdir(parents=True, exist_ok=True)
+            if not os.access(self.storage_path.parent, os.W_OK):
+                raise PermissionError(f"No write permission for storage path: {self.storage_path}")
+        except OSError as e:
+            raise OSError(f"Failed to initialize storage path: {str(e)}")
+            
         self.allow_reset = allow_reset
         self.embedder_config = embedder_config
         self.crew = crew
         self.agents = self._initialize_agents()
 
     def _initialize_agents(self) -> str:
+        """Initialize agent identifiers for storage.
+        
+        Returns:
+            str: Underscore-joined string of sanitized agent role names
+        """
         if self.crew:
             return "_".join(
                 [self._sanitize_role(agent.role) for agent in self.crew.agents]
@@ -36,12 +66,27 @@ class BaseRAGStorage(ABC):
 
     @abstractmethod
     def _sanitize_role(self, role: str) -> str:
-        """Sanitizes agent roles to ensure valid directory names."""
+        """Sanitizes agent roles to ensure valid directory names.
+        
+        Args:
+            role: The agent role name to sanitize
+            
+        Returns:
+            str: Sanitized role name safe for use in paths
+        """
         pass
 
     @abstractmethod
     def save(self, value: Any, metadata: Dict[str, Any]) -> None:
-        """Save a value with metadata to the storage."""
+        """Save a value with metadata to the storage.
+        
+        Args:
+            value: The value to store
+            metadata: Additional metadata to store with the value
+            
+        Raises:
+            OSError: If there is an error writing to storage
+        """
         pass
 
     @abstractmethod
@@ -51,25 +96,55 @@ class BaseRAGStorage(ABC):
         limit: int = 3,
         filter: Optional[dict] = None,
         score_threshold: float = 0.35,
-    ) -> List[Any]:
+    ) -> List[Dict[str, Any]]:
-        """Search for entries in the storage."""
+        """Search for entries in the storage.
+        
+        Args:
+            query: The search query string
+            limit: Maximum number of results to return
+            filter: Optional filter criteria
+            score_threshold: Minimum similarity score threshold
+            
+        Returns:
+            List[Dict[str, Any]]: List of matching entries with their metadata
+        """
         pass
 
     @abstractmethod
     def reset(self) -> None:
-        """Reset the storage."""
+        """Reset the storage.
+        
+        Raises:
+            OSError: If there is an error clearing storage
+            PermissionError: If reset is not allowed
+        """
         pass
 
     @abstractmethod
     def _generate_embedding(
         self, text: str, metadata: Optional[Dict[str, Any]] = None
-    ) -> Any:
+    ) -> List[float]:
-        """Generate an embedding for the given text and metadata."""
+        """Generate an embedding for the given text and metadata.
+        
+        Args:
+            text: Text to generate embedding for
+            metadata: Optional metadata to include in embedding
+            
+        Returns:
+            List[float]: Vector embedding of the text
+            
+        Raises:
+            ValueError: If text is empty or invalid
+        """
         pass
 
     @abstractmethod
-    def _initialize_app(self):
+    def _initialize_app(self) -> None:
-        """Initialize the vector db."""
+        """Initialize the vector db.
+        
+        Raises:
+            OSError: If vector db initialization fails
+        """
         pass
 
     def setup_config(self, config: Dict[str, Any]):

src/crewai/memory/storage/kickoff_task_outputs_storage.py

@@ -1,5 +1,7 @@
 import json
+import os
 import sqlite3
+from pathlib import Path
 from typing import Any, Dict, List, Optional
 
 from crewai.task import Task
@@ -13,12 +15,30 @@ class KickoffTaskOutputsSQLiteStorage:
     An updated SQLite storage class for kickoff task outputs storage.
     """
 
-    def __init__(self, db_path: Optional[str] = None) -> None:
+    def __init__(self, storage_path: Optional[Path] = None) -> None:
-        self.db_path = (
+        """Initialize kickoff task outputs storage.
-            db_path
+        
-            if db_path
+        Args:
-            else f"{db_storage_path()}/latest_kickoff_task_outputs.db"
+            storage_path: Optional custom path for storage location
+            
+        Raises:
+            PermissionError: If storage path is not writable
+            OSError: If storage path cannot be created
+        """
+        self.storage_path = (
+            storage_path
+            if storage_path
+            else Path(f"{db_storage_path()}/latest_kickoff_task_outputs.db")
         )
+        
+        # Validate storage path
+        try:
+            self.storage_path.parent.mkdir(parents=True, exist_ok=True)
+            if not os.access(self.storage_path.parent, os.W_OK):
+                raise PermissionError(f"No write permission for storage path: {self.storage_path}")
+        except OSError as e:
+            raise OSError(f"Failed to initialize storage path: {str(e)}")
+            
         self._printer: Printer = Printer()
         self._initialize_db()
 
@@ -27,7 +47,7 @@ class KickoffTaskOutputsSQLiteStorage:
         Initializes the SQLite database and creates LTM table
         """
         try:
-            with sqlite3.connect(self.db_path) as conn:
+            with sqlite3.connect(str(self.storage_path)) as conn:
                 cursor = conn.cursor()
                 cursor.execute(
                     """
@@ -57,9 +77,21 @@ class KickoffTaskOutputsSQLiteStorage:
         task_index: int,
         was_replayed: bool = False,
         inputs: Dict[str, Any] = {},
-    ):
+    ) -> None:
+        """Add a task output to storage.
+        
+        Args:
+            task: The task whose output is being stored
+            output: The output data from the task
+            task_index: Index of this task in the sequence
+            was_replayed: Whether this was from a replay
+            inputs: Optional input data that led to this output
+            
+        Raises:
+            sqlite3.Error: If there is an error saving to database
+        """
         try:
-            with sqlite3.connect(self.db_path) as conn:
+            with sqlite3.connect(str(self.storage_path)) as conn:
                 cursor = conn.cursor()
                 cursor.execute(
                     """
@@ -92,7 +124,7 @@ class KickoffTaskOutputsSQLiteStorage:
         Updates an existing row in the latest_kickoff_task_outputs table based on task_index.
         """
         try:
-            with sqlite3.connect(self.db_path) as conn:
+            with sqlite3.connect(str(self.storage_path)) as conn:
                 cursor = conn.cursor()
 
                 fields = []
@@ -121,7 +153,7 @@ class KickoffTaskOutputsSQLiteStorage:
 
     def load(self) -> Optional[List[Dict[str, Any]]]:
         try:
-            with sqlite3.connect(self.db_path) as conn:
+            with sqlite3.connect(str(self.storage_path)) as conn:
                 cursor = conn.cursor()
                 cursor.execute("""
                 SELECT *
@@ -157,7 +189,7 @@ class KickoffTaskOutputsSQLiteStorage:
         Deletes all rows from the latest_kickoff_task_outputs table.
         """
         try:
-            with sqlite3.connect(self.db_path) as conn:
+            with sqlite3.connect(str(self.storage_path)) as conn:
                 cursor = conn.cursor()
                 cursor.execute("DELETE FROM latest_kickoff_task_outputs")
                 conn.commit()

src/crewai/memory/storage/ltm_sqlite_storage.py

@@ -1,5 +1,7 @@
 import json
+import os
 import sqlite3
+from pathlib import Path
 from typing import Any, Dict, List, Optional, Union
 
 from crewai.utilities import Printer
@@ -11,10 +13,26 @@ class LTMSQLiteStorage:
     An updated SQLite storage class for LTM data storage.
     """
 
-    def __init__(self, db_path: Optional[str] = None) -> None:
+    def __init__(self, storage_path: Optional[Path] = None) -> None:
-        self.db_path = (
+        """Initialize LTM SQLite storage.
-            db_path if db_path else f"{db_storage_path()}/latest_long_term_memories.db"
+        
-        )
+        Args:
+            storage_path: Optional custom path for storage location
+            
+        Raises:
+            PermissionError: If storage path is not writable
+            OSError: If storage path cannot be created
+        """
+        self.storage_path = storage_path if storage_path else Path(f"{db_storage_path()}/latest_long_term_memories.db")
+        
+        # Validate storage path
+        try:
+            self.storage_path.parent.mkdir(parents=True, exist_ok=True)
+            if not os.access(self.storage_path.parent, os.W_OK):
+                raise PermissionError(f"No write permission for storage path: {self.storage_path}")
+        except OSError as e:
+            raise OSError(f"Failed to initialize storage path: {str(e)}")
+            
         self._printer: Printer = Printer()
         self._initialize_db()
 
@@ -23,7 +41,7 @@ class LTMSQLiteStorage:
         Initializes the SQLite database and creates LTM table
         """
         try:
-            with sqlite3.connect(self.db_path) as conn:
+            with sqlite3.connect(str(self.storage_path)) as conn:
                 cursor = conn.cursor()
                 cursor.execute(
                     """
@@ -51,9 +69,20 @@ class LTMSQLiteStorage:
         datetime: str,
         score: Union[int, float],
     ) -> None:
+        """Save a memory entry to long-term memory.
+        
+        Args:
+            task_description: Description of the task this memory relates to
+            metadata: Additional data to store with the memory
+            datetime: Timestamp for when this memory was created
+            score: Relevance score for this memory (higher is more relevant)
+            
+        Raises:
+            sqlite3.Error: If there is an error saving to the database
+        """
         """Saves data to the LTM table with error handling."""
         try:
-            with sqlite3.connect(self.db_path) as conn:
+            with sqlite3.connect(str(self.storage_path)) as conn:
                 cursor = conn.cursor()
                 cursor.execute(
                     """
@@ -74,7 +103,7 @@ class LTMSQLiteStorage:
     ) -> Optional[List[Dict[str, Any]]]:
         """Queries the LTM table by task description with error handling."""
         try:
-            with sqlite3.connect(self.db_path) as conn:
+            with sqlite3.connect(str(self.storage_path)) as conn:
                 cursor = conn.cursor()
                 cursor.execute(
                     f"""
@@ -109,7 +138,7 @@ class LTMSQLiteStorage:
     ) -> None:
         """Resets the LTM table with error handling."""
         try:
-            with sqlite3.connect(self.db_path) as conn:
+            with sqlite3.connect(str(self.storage_path)) as conn:
                 cursor = conn.cursor()
                 cursor.execute("DELETE FROM long_term_memories")
                 conn.commit()