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src: added FalkorDB GraphStore implementation i.e code, requirements,… #1

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@gkorland gkorland commented Feb 2, 2025

User description

… and docs


PR Type

Enhancement, Documentation


Description

  • Added FalkorDB GraphStore implementation with core functionalities.

  • Integrated FalkorDB support into the GraphStore factory.

  • Updated documentation to include FalkorDB usage examples.

  • Added FalkorDB and Redis dependencies to requirements.


Changes walkthrough 📝

Relevant files
Enhancement
falkordb_graph_store.py
Added FalkorDB GraphStore implementation                                 

src/graphrag_toolkit/storage/falkordb_graph_store.py

  • Implemented FalkorDBDatabaseClient class for FalkorDB integration.
  • Added methods for query execution and client initialization.
  • Included utility for generating random database names.
  • Integrated logging for query execution and results.
  • +120/-0 
    graph_store_factory.py
    Integrated FalkorDB into GraphStore factory                           

    src/graphrag_toolkit/storage/graph_store_factory.py

  • Integrated FalkorDB into the graph store factory.
  • Added support for FalkorDB connection strings.
  • Implemented a factory method for initializing FalkorDB clients.
  • +24/-8   
    Documentation
    storage-model.md
    Updated documentation for FalkorDB GraphStore                       

    docs/storage-model.md

  • Documented FalkorDB GraphStore usage and examples.
  • Updated overview to include FalkorDB support.
  • Added instructions for creating FalkorDB graph stores.
  • +31/-7   
    Dependencies
    requirements.txt
    Updated requirements with FalkorDB dependencies                   

    src/requirements.txt

  • Added FalkorDB library dependency.
  • Added redis library dependency for FalkorDB support.
  • +2/-0     

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  • Summary by CodeRabbit

    • Documentation

      • Revised storage model documentation for improved clarity and consistency.
      • Added a new section detailing how to connect to the FalkorDB graph store.
    • New Features

      • Integrated support for FalkorDB, enabling both cloud and local graph database connectivity.
      • Introduced a new client for interacting with FalkorDB databases.
    • Chores

      • Updated dependencies to include FalkorDB and Redis packages.

    Copy link

    coderabbitai bot commented Feb 2, 2025

    Walkthrough

    The changes reorganize the storage model documentation and add a new "FalkorDB Graph Store" section with instructions on how to create connections using GraphStoreFactory.for_graph_store(). A new file implementing the FalkorDBDatabaseClient class and related methods was introduced. The graph store factory now supports FalkorDB by adding a constant and a dedicated initializer method. Additionally, two new dependencies, FalkorDB==1.0.10 and redis==5.2.1, were appended to the requirements.

    Changes

    File(s) Change Summary
    docs/storage-model.md Revised documentation: restructured topics list; added "FalkorDB Graph Store" section with connection examples and updates to supported graph stores.
    src/.../falkordb_graph_store.py
    src/.../graph_store_factory.py
    Added FalkorDB support: new FalkorDBDatabaseClient class with methods (client, node_id, execute_query, etc.); introduced constant FALKORDB and a new for_falkordb method to integrate FalkorDB into the factory.
    src/requirements.txt Updated dependencies by adding FalkorDB==1.0.10 and redis==5.2.1.

    Sequence Diagram(s)

    sequenceDiagram
        participant App as Application
        participant Factory as GraphStoreFactory
        participant Client as FalkorDBDatabaseClient
        participant DB as FalkorDB
    
        App->>Factory: Request graph store for FalkorDB
        Factory->>Client: Call for_falkordb(endpoint, kwargs)
        Client->>DB: Establish connection (parse endpoint, set host/port)
        App->>Client: Execute execute_query(cypher, parameters)
        Client->>DB: Send query execution request
        DB-->>Client: Return query results or error
        Client-->>App: Return processed results
    
    Loading

    Poem

    I'm a rabbit with a hop so light,
    Coding changes, dancing through the night.
    FalkorDB now joins our tale,
    With new methods that never fail.
    Dependencies added, our code's set free,
    Hoppin' with joy in our repository!
    🐇✨

    ✨ Finishing Touches
    • 📝 Generate Docstrings (Beta)

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    @gkorland gkorland requested a review from Copilot February 2, 2025 07:56
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    qodo-merge-pro bot commented Feb 2, 2025

    Qodo Merge was enabled for this repository. To continue using it, please link your Git account with your Qodo account here.

    PR Reviewer Guide 🔍

    Here are some key observations to aid the review process:

    ⏱️ Estimated effort to review: 3 🔵🔵🔵⚪⚪
    🧪 No relevant tests
    🔒 Security concerns

    Sensitive information exposure:
    The code logs query parameters and results which could potentially contain sensitive data. Consider redacting sensitive information in logs, especially at DEBUG level

    ⚡ Recommended focus areas for review

    Error Handling

    The error handling in execute_query() could be improved by providing more specific error types and handling different failure scenarios separately rather than catching all exceptions

    try:
        response =  self.client.query(
            q=request_log_entry_parameters.format_query_with_query_ref(cypher),
            params=parameters
        )
    except Exception as e:
        logger.error(f"Query execution failed: {e}")
        raise
    Connection Management

    The client connection is not properly closed/cleaned up. Should implement proper connection lifecycle management including close() method

    if self._client is None:
        self._driver = falkordb.FalkorDB(
                host=self.host,
                port=self.port,
                username=self.username,
                password=self.password,
                ssl=self.ssl,
            )
        self._client = self._driver.select_graph(self.database)
    return self._client

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    Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

    Files not reviewed (1)
    • src/requirements.txt: Language not supported
    Comments suppressed due to low confidence (2)

    src/graphrag_toolkit/storage/falkordb_graph_store.py:24

    • [nitpick] The function name 'generate_random_string' is ambiguous. Consider renaming it to 'generate_random_alphabetic_string' to clarify that it generates a string of alphabetic characters.
    def generate_random_string(length: int) -> str:
    

    src/graphrag_toolkit/storage/falkordb_graph_store.py:82

    • The 'parameters' argument should be initialized to an empty dictionary if it is None to avoid potential errors.
    def execute_query(self, cypher: str, parameters: dict = {}, correlation_id: Any =None) -> Union[List[List[Node]], List[List[List[Path]]]]:
    
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    qodo-merge-pro bot commented Feb 2, 2025

    Qodo Merge was enabled for this repository. To continue using it, please link your Git account with your Qodo account here.

    PR Code Suggestions ✨

    Explore these optional code suggestions:

    CategorySuggestion                                                                                                                                    Score
    Possible issue
    ✅ Add connection error handling
    Suggestion Impact:The commit implemented the suggested error handling for FalkorDB connection by wrapping the connection code in a try-except block and adding proper error logging and raising

    code diff:

             if self._client is None:
    -            self._driver = falkordb.FalkorDB(
    -                    host=self.host,
    -                    port=self.port,
    -                    username=self.username,
    -                    password=self.password,
    -                    ssl=self.ssl,
    -                )
    -            self._client = self._driver.select_graph(self.database)
    +            try:
    +                self._driver = falkordb.FalkorDB(
    +                        host=self.host,
    +                        port=self.port,
    +                        username=self.username,
    +                        password=self.password,
    +                        ssl=self.ssl,
    +                    )
    +                self._client = self._driver.select_graph(self.database)
    +            except Exception as e:
    +                logger.error(f"Failed to connect to FalkorDB: {e}")
    +                raise ConnectionError(f"Could not establish connection to FalkorDB: {e}")

    Add error handling for connection failures in the client property. Currently, if
    connection fails, it only handles URL parsing errors but not connection issues.

    src/graphrag_toolkit/storage/falkordb_graph_store.py [68-76]

     if self._client is None:
    -    self._driver = falkordb.FalkorDB(
    -            host=self.host,
    -            port=self.port,
    -            username=self.username,
    -            password=self.password,
    -            ssl=self.ssl,
    -        )
    -    self._client = self._driver.select_graph(self.database)
    +    try:
    +        self._driver = falkordb.FalkorDB(
    +                host=self.host,
    +                port=self.port,
    +                username=self.username,
    +                password=self.password,
    +                ssl=self.ssl,
    +            )
    +        self._client = self._driver.select_graph(self.database)
    +    except Exception as e:
    +        logger.error(f"Failed to connect to FalkorDB: {e}")
    +        raise ConnectionError(f"Could not establish connection to FalkorDB: {e}")
    • Apply this suggestion
    Suggestion importance[1-10]: 8

    Why: The suggestion addresses an important reliability issue by adding proper error handling for database connection failures, which could help with debugging and provide clearer error messages to users.

    8
    Security
    ✅ Validate database name input
    Suggestion Impact:The commit implemented the suggested database name validation by adding the exact same check for alphanumeric and non-empty values

    code diff:

    +        if not database or not database.isalnum():
    +            raise ValueError("Database name must be alphanumeric and non-empty")

    Add input validation for the database parameter to ensure it meets FalkorDB's naming
    requirements and prevent potential injection attacks.

    src/graphrag_toolkit/storage/falkordb_graph_store.py [31-41]

     def __init__(self,
                  endpoint_url: str = None,
                  database: str = generate_random_string(4),
                  username: str = None,
                  password: str = None,
                  ssl: bool = False,
                  _client: Optional[Any] = None,
                  *args,
                  **kwargs
                  ) -> None:
    +    if not database or not database.isalnum():
    +        raise ValueError("Database name must be alphanumeric and non-empty")
    • Apply this suggestion
    Suggestion importance[1-10]: 7

    Why: The suggestion adds important input validation to prevent potential security issues and ensure database names meet FalkorDB requirements, improving the robustness of the code.

    7

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    Actionable comments posted: 1

    🧹 Nitpick comments (6)
    src/graphrag_toolkit/storage/falkordb_graph_store.py (3)

    24-27: Consider using a cryptographically secure random generator if security is a concern.
    This function uses random.choice to generate strings. If these strings will be used in security-sensitive contexts like credentials or hashed identifiers, consider using secrets instead of random.


    33-33: Avoid non-deterministic default parameters.
    Using generate_random_string(4) as the default for database can lead to unexpected results if the constructor is accessed multiple times. Prefer using None and assigning a random string inside the constructor.

    -                 database: str = generate_random_string(4),
    +                 database: Optional[str] = None,
    ...
        if database is None:
            database = generate_random_string(4)

    57-62: Use raise ... from e to preserve the original traceback.
    When re-raising exceptions in an except block, specify the original exception with from e to keep the full traceback context.

    -except Exception as e:
    -    raise ValueError(f"Error parsing endpoint url: {e}")
    +except Exception as e:
    +    raise ValueError(f"Error parsing endpoint url: {e}") from e
    🧰 Tools
    🪛 Ruff (0.8.2)

    62-62: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling

    (B904)

    src/graphrag_toolkit/storage/graph_store_factory.py (1)

    64-64: Remove extraneous “f” prefix for readability.
    No placeholders are being used in the string.

    -logger.debug(f'Opening dummy graph store')
    +logger.debug('Opening dummy graph store')
    🧰 Tools
    🪛 Ruff (0.8.2)

    64-64: f-string without any placeholders

    Remove extraneous f prefix

    (F541)

    docs/storage-model.md (2)

    61-67: Specify language for fenced code blocks.
    Add a language identifier (e.g., python) to follow best practices for Markdown code blocks.

    -```
    +```python
     from graphrag_toolkit.storage import GraphStoreFactory
    
     falkordb_connection_info = 'falkordb://your-falkordb-endpoint'
    
     graph_store = GraphStoreFactory.for_graph_store(falkordb_connection_info)
    🧰 Tools
    🪛 markdownlint-cli2 (0.17.2)

    61-61: Fenced code blocks should have a language specified
    null

    (MD040, fenced-code-language)


    71-77: Specify language for fenced code blocks.
    Add a language identifier (e.g., python) to follow best practices for Markdown code blocks.

    -```
    +```python
     from graphrag_toolkit.storage import GraphStoreFactory
    
     falkordb_connection_info = 'falkordb://'
    
     graph_store = GraphStoreFactory.for_graph_store(falkordb_connection_info)
    🧰 Tools
    🪛 markdownlint-cli2 (0.17.2)

    71-71: Fenced code blocks should have a language specified
    null

    (MD040, fenced-code-language)

    📜 Review details

    Configuration used: CodeRabbit UI
    Review profile: CHILL
    Plan: Pro

    📥 Commits

    Reviewing files that changed from the base of the PR and between 39c6164 and 54aa764.

    📒 Files selected for processing (4)
    • docs/storage-model.md (2 hunks)
    • src/graphrag_toolkit/storage/falkordb_graph_store.py (1 hunks)
    • src/graphrag_toolkit/storage/graph_store_factory.py (2 hunks)
    • src/requirements.txt (2 hunks)
    ✅ Files skipped from review due to trivial changes (1)
    • src/requirements.txt
    🧰 Additional context used
    🪛 markdownlint-cli2 (0.17.2)
    docs/storage-model.md

    61-61: Fenced code blocks should have a language specified
    null

    (MD040, fenced-code-language)


    71-71: Fenced code blocks should have a language specified
    null

    (MD040, fenced-code-language)

    🪛 Ruff (0.8.2)
    src/graphrag_toolkit/storage/graph_store_factory.py

    64-64: f-string without any placeholders

    Remove extraneous f prefix

    (F541)

    src/graphrag_toolkit/storage/falkordb_graph_store.py

    62-62: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling

    (B904)


    83-83: Do not use mutable data structures for argument defaults

    Replace with None; initialize within function

    (B006)

    🔇 Additional comments (1)
    src/graphrag_toolkit/storage/graph_store_factory.py (1)

    79-84: Docstring for for_falkordb is clear and consistent.
    Nicely explains how to initialize a FalkorDB database client.


    def execute_query(self,
    cypher: str,
    parameters: dict = {},
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    🛠️ Refactor suggestion

    Avoid using mutable default arguments in function signatures.
    Using a mutable dictionary as a default can lead to shared state across calls. Use None as the default and initialize inside the function.

    -def execute_query(self, 
    -                  cypher: str, 
    -                  parameters: dict = {}, 
    -                  correlation_id: Any = None) -> Union[List[List[Node]], List[List[List[Path]]]]:
    +def execute_query(self,
    +                  cypher: str, 
    +                  parameters: Optional[dict] = None,
    +                  correlation_id: Any = None) -> Union[List[List[Node]], List[List[List[Path]]]]:
         if parameters is None:
             parameters = {}
    📝 Committable suggestion

    ‼️ IMPORTANT
    Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

    Suggested change
    parameters: dict = {},
    def execute_query(self,
    cypher: str,
    parameters: Optional[dict] = None,
    correlation_id: Any = None) -> Union[List[List[Node]], List[List[List[Path]]]]:
    if parameters is None:
    parameters = {}
    # ... rest of the function implementation
    🧰 Tools
    🪛 Ruff (0.8.2)

    83-83: Do not use mutable data structures for argument defaults

    Replace with None; initialize within function

    (B006)

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    Actionable comments posted: 2

    🧹 Nitpick comments (2)
    src/graphrag_toolkit/storage/falkordb_graph_store.py (2)

    25-28: Consider using secrets module for secure random string generation.

    While random.choice is suitable for non-security-critical use cases, using the secrets module would provide cryptographically secure random generation, which is generally preferred when generating identifiers.

    -import random
    +import secrets
     import string
     
     def generate_random_alphabetic_string(length: int) -> str:
         characters = string.ascii_letters
    -    random_string = "".join(random.choice(characters) for _ in range(length))
    +    random_string = "".join(secrets.choice(characters) for _ in range(length))
         return random_string

    32-58: Add validation for endpoint_url and authentication parameters.

    Consider adding validation for endpoint_url when credentials are provided, and ensure consistent error handling for authentication parameters.

     def __init__(self,
                  endpoint_url: str = None,
                  database: Optional[str] = None,
                  username: str = None,
                  password: str = None,
                  ssl: bool = False,
                  _client: Optional[Any] = None,
                  *args,
                  **kwargs
                  ) -> None:
    +    if username and not password:
    +        raise ValueError("Password is required when username is provided")
    +
    +    if endpoint_url and not isinstance(endpoint_url, str):
    +        raise ValueError("Endpoint URL must be a string")
    +
         if database is None:
             database = generate_random_alphabetic_string(4)
    
         if not database or not database.isalnum():
             raise ValueError("Database name must be alphanumeric and non-empty")
    📜 Review details

    Configuration used: CodeRabbit UI
    Review profile: CHILL
    Plan: Pro

    📥 Commits

    Reviewing files that changed from the base of the PR and between 54aa764 and bce2056.

    📒 Files selected for processing (3)
    • docs/storage-model.md (2 hunks)
    • src/graphrag_toolkit/storage/falkordb_graph_store.py (1 hunks)
    • src/graphrag_toolkit/storage/graph_store_factory.py (2 hunks)
    🚧 Files skipped from review as they are similar to previous changes (2)
    • src/graphrag_toolkit/storage/graph_store_factory.py
    • docs/storage-model.md
    🧰 Additional context used
    🪛 Ruff (0.8.2)
    src/graphrag_toolkit/storage/falkordb_graph_store.py

    86-86: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling

    (B904)

    🔇 Additional comments (1)
    src/graphrag_toolkit/storage/falkordb_graph_store.py (1)

    1-20: LGTM!

    The license header is properly formatted, and imports are well-organized following best practices.

    Comment on lines 92 to 119
    def execute_query(self,
    cypher: str,
    parameters: Optional[dict] = None,
    correlation_id: Any =None) -> Union[List[List[Node]], List[List[List[Path]]]]:
    if parameters is None:
    parameters = {}

    query_id = uuid.uuid4().hex[:5]

    request_log_entry_parameters = self.log_formatting.format_log_entry(
    self._logging_prefix(query_id, correlation_id),
    cypher,
    params = json.dumps(parameters),
    )

    logger.debug(f'[{request_log_entry_parameters.query_ref}] Query: [query: {request_log_entry_parameters.query}, parameters: {request_log_entry_parameters.parameters}]')

    start = time.time()

    try:
    response = self.client.query(
    q=request_log_entry_parameters.format_query_with_query_ref(cypher),
    params=parameters
    )
    except Exception as e:
    logger.error(f"Query execution failed: {e}. Query: {cypher}, Parameters: {parameters}")
    raise ResponseError(f"Failed to execute query: {e}") from e

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    🛠️ Refactor suggestion

    Add proper exception chaining in execute_query method.

    The error handling in the execute query method should use proper exception chaining.

         try:
             response =  self.client.query(
                 q=request_log_entry_parameters.format_query_with_query_ref(cypher),
                 params=parameters
             )
    -    except Exception as e:
    +    except ResponseError as e:
             logger.error(f"Query execution failed: {e}. Query: {cypher}, Parameters: {parameters}")
    -        raise ResponseError(f"Failed to execute query: {e}") from e
    +        raise
    +    except Exception as e:
    +        logger.error(f"Unexpected error during query execution: {e}. Query: {cypher}, Parameters: {parameters}")
    +        raise ResponseError(f"Unexpected error during query execution: {e}") from e
    📝 Committable suggestion

    ‼️ IMPORTANT
    Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

    Suggested change
    def execute_query(self,
    cypher: str,
    parameters: Optional[dict] = None,
    correlation_id: Any =None) -> Union[List[List[Node]], List[List[List[Path]]]]:
    if parameters is None:
    parameters = {}
    query_id = uuid.uuid4().hex[:5]
    request_log_entry_parameters = self.log_formatting.format_log_entry(
    self._logging_prefix(query_id, correlation_id),
    cypher,
    params = json.dumps(parameters),
    )
    logger.debug(f'[{request_log_entry_parameters.query_ref}] Query: [query: {request_log_entry_parameters.query}, parameters: {request_log_entry_parameters.parameters}]')
    start = time.time()
    try:
    response = self.client.query(
    q=request_log_entry_parameters.format_query_with_query_ref(cypher),
    params=parameters
    )
    except Exception as e:
    logger.error(f"Query execution failed: {e}. Query: {cypher}, Parameters: {parameters}")
    raise ResponseError(f"Failed to execute query: {e}") from e
    def execute_query(self,
    cypher: str,
    parameters: Optional[dict] = None,
    correlation_id: Any = None) -> Union[List[List[Node]], List[List[List[Path]]]]:
    if parameters is None:
    parameters = {}
    query_id = uuid.uuid4().hex[:5]
    request_log_entry_parameters = self.log_formatting.format_log_entry(
    self._logging_prefix(query_id, correlation_id),
    cypher,
    params = json.dumps(parameters),
    )
    logger.debug(f'[{request_log_entry_parameters.query_ref}] Query: [query: {request_log_entry_parameters.query}, parameters: {request_log_entry_parameters.parameters}]')
    start = time.time()
    try:
    response = self.client.query(
    q=request_log_entry_parameters.format_query_with_query_ref(cypher),
    params=parameters
    )
    except ResponseError as e:
    logger.error(f"Query execution failed: {e}. Query: {cypher}, Parameters: {parameters}")
    raise
    except Exception as e:
    logger.error(f"Unexpected error during query execution: {e}. Query: {cypher}, Parameters: {parameters}")
    raise ResponseError(f"Unexpected error during query execution: {e}") from e

    Comment on lines 59 to 88
    @property
    def client(self) -> Graph:
    # Example FalkorDB Cloud Endpoint URL
    # r-6jissuruar.instance-zwb082gpf.hc-v8noonp0c.europe-west1.gcp.f2e0a955bb84.cloud:62471
    if self.endpoint_url:
    try:
    parts = self.endpoint_url.split(':')
    self.host = parts[0]
    self.port = int(parts[1])
    except Exception as e:
    raise ValueError(f"Error parsing endpoint url: {e}") from e
    else:
    self.host = "localhost"
    self.port = 6379

    if self._client is None:
    try:
    self._driver = falkordb.FalkorDB(
    host=self.host,
    port=self.port,
    username=self.username,
    password=self.password,
    ssl=self.ssl,
    )
    self._client = self._driver.select_graph(self.database)
    except Exception as e:
    logger.error(f"Failed to connect to FalkorDB: {e}")
    raise ConnectionError(f"Could not establish connection to FalkorDB: {e}")
    return self._client

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    🛠️ Refactor suggestion

    Improve error handling in client property.

    1. Add proper exception chaining for endpoint URL parsing error.
    2. Enhance connection error handling with more specific error types.
         if self.endpoint_url:
             try:
                 parts = self.endpoint_url.split(':')
    +            if len(parts) != 2:
    +                raise ValueError("Invalid endpoint URL format. Expected format: host:port")
                 self.host = parts[0]
                 self.port = int(parts[1])
             except Exception as e:
                 raise ValueError(f"Error parsing endpoint url: {e}") from e
    
         if self._client is None:
             try:
                 self._driver = falkordb.FalkorDB(
                         host=self.host,
                         port=self.port,
                         username=self.username,
                         password=self.password,
                         ssl=self.ssl,
                     )
                 self._client = self._driver.select_graph(self.database)
    -        except Exception as e:
    +        except falkordb.ConnectionError as e:
                 logger.error(f"Failed to connect to FalkorDB: {e}")
                 raise ConnectionError(f"Could not establish connection to FalkorDB: {e}") from e
    +        except falkordb.AuthenticationError as e:
    +            logger.error(f"Authentication failed: {e}")
    +            raise ConnectionError(f"Authentication failed: {e}") from e
    +        except Exception as e:
    +            logger.error(f"Unexpected error while connecting to FalkorDB: {e}")
    +            raise ConnectionError(f"Unexpected error while connecting to FalkorDB: {e}") from e
    📝 Committable suggestion

    ‼️ IMPORTANT
    Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

    Suggested change
    @property
    def client(self) -> Graph:
    # Example FalkorDB Cloud Endpoint URL
    # r-6jissuruar.instance-zwb082gpf.hc-v8noonp0c.europe-west1.gcp.f2e0a955bb84.cloud:62471
    if self.endpoint_url:
    try:
    parts = self.endpoint_url.split(':')
    self.host = parts[0]
    self.port = int(parts[1])
    except Exception as e:
    raise ValueError(f"Error parsing endpoint url: {e}") from e
    else:
    self.host = "localhost"
    self.port = 6379
    if self._client is None:
    try:
    self._driver = falkordb.FalkorDB(
    host=self.host,
    port=self.port,
    username=self.username,
    password=self.password,
    ssl=self.ssl,
    )
    self._client = self._driver.select_graph(self.database)
    except Exception as e:
    logger.error(f"Failed to connect to FalkorDB: {e}")
    raise ConnectionError(f"Could not establish connection to FalkorDB: {e}")
    return self._client
    @property
    def client(self) -> Graph:
    # Example FalkorDB Cloud Endpoint URL
    # r-6jissuruar.instance-zwb082gpf.hc-v8noonp0c.europe-west1.gcp.f2e0a955bb84.cloud:62471
    if self.endpoint_url:
    try:
    parts = self.endpoint_url.split(':')
    if len(parts) != 2:
    raise ValueError("Invalid endpoint URL format. Expected format: host:port")
    self.host = parts[0]
    self.port = int(parts[1])
    except Exception as e:
    raise ValueError(f"Error parsing endpoint url: {e}") from e
    else:
    self.host = "localhost"
    self.port = 6379
    if self._client is None:
    try:
    self._driver = falkordb.FalkorDB(
    host=self.host,
    port=self.port,
    username=self.username,
    password=self.password,
    ssl=self.ssl,
    )
    self._client = self._driver.select_graph(self.database)
    except falkordb.ConnectionError as e:
    logger.error(f"Failed to connect to FalkorDB: {e}")
    raise ConnectionError(f"Could not establish connection to FalkorDB: {e}") from e
    except falkordb.AuthenticationError as e:
    logger.error(f"Authentication failed: {e}")
    raise ConnectionError(f"Authentication failed: {e}") from e
    except Exception as e:
    logger.error(f"Unexpected error while connecting to FalkorDB: {e}")
    raise ConnectionError(f"Unexpected error while connecting to FalkorDB: {e}") from e
    return self._client
    🧰 Tools
    🪛 Ruff (0.8.2)

    86-86: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling

    (B904)

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    Actionable comments posted: 0

    🧹 Nitpick comments (6)
    src/graphrag_toolkit/storage/graph_store_factory.py (2)

    36-36: Consider a more appropriate default case.

    The default case assumes NEPTUNE_ANALYTICS, which might not be the best choice. Consider raising a ValueError for unrecognized graph info formats to prevent silent failures.

    -        return (NEPTUNE_ANALYTICS, graph_info)
    +        raise ValueError(f"Unrecognized graph info format: {graph_info}")

    79-88: Enhance the docstring with parameter and return type information.

    The docstring should include parameter descriptions and return type information for better documentation.

         @staticmethod
         def for_falkordb(graph_endpoint, **kwargs):
             """
             Initializes and returns the FalkorDB database client.
    +
    +        Args:
    +            graph_endpoint (str): The endpoint URL for the FalkorDB instance.
    +            **kwargs: Additional keyword arguments passed to FalkorDBDatabaseClient.
    +
    +        Returns:
    +            FalkorDBDatabaseClient: An initialized FalkorDB database client.
    +
    +        Raises:
    +            ValueError: If the endpoint URL is invalid.
    +            ConnectionError: If connection to FalkorDB fails.
             """
             return FalkorDBDatabaseClient(
                 endpoint_url=graph_endpoint,
                 log_formatting=get_log_formatting(kwargs), 
                 **kwargs
             )
    src/graphrag_toolkit/storage/falkordb_graph_store.py (4)

    5-6: Remove unused imports.

    The following imports are not used in the code:

    • string
    • secrets
    • RedactedGraphQueryLogFormatting
    -import string
    -import secrets
     import json
     import logging
     import time
     import uuid
     from typing import Optional, Any, List, Union
     from falkordb.node import Node
     from falkordb.path import Path
     from falkordb.graph import Graph
     from redis.exceptions import ResponseError, AuthenticationError
    
     from llama_index.core.bridge.pydantic import PrivateAttr
    
     from graphrag_toolkit.storage.graph_store import ( 
    -    GraphStore, NodeId, 
    -    format_id, RedactedGraphQueryLogFormatting)
    +    GraphStore, NodeId, format_id)

    Also applies to: 21-21

    🧰 Tools
    🪛 Ruff (0.8.2)

    5-5: string imported but unused

    Remove unused import: string

    (F401)


    6-6: secrets imported but unused

    Remove unused import: secrets

    (F401)


    63-64: Enhance endpoint URL validation.

    The current validation only checks if the URL is a string. Consider adding format validation to ensure it follows the expected pattern.

         if endpoint_url and not isinstance(endpoint_url, str):
             raise ValueError("Endpoint URL must be a string")
    +    if endpoint_url and not endpoint_url.startswith('falkordb://'):
    +        raise ValueError("Endpoint URL must start with 'falkordb://'")

    104-123: Consider implementing connection pooling.

    For better performance and resource management, consider implementing connection pooling to reuse connections instead of creating new ones for each request.

         if self._client is None:
             try:
    +            # TODO: Implement connection pooling
    +            # Consider using a connection pool manager to reuse connections
    +            # and handle connection lifecycle
                 self._client = falkordb.FalkorDB(
                         host=host,
                         port=port,
                         username=self.username,
                         password=self.password,
                         ssl=self.ssl,
                     ).select_graph(self.database)

    163-173: Add query timeout handling.

    Consider adding a timeout parameter to prevent long-running queries from blocking the system.

         try:
             response = self.client.query(
                 q=request_log_entry_parameters.format_query_with_query_ref(cypher),
    -            params=parameters
    +            params=parameters,
    +            timeout=kwargs.get('timeout', 30)  # Default 30 seconds timeout
             )
         except ResponseError as e:
             logger.error(f"Query execution failed: {e}. Query: {cypher}, Parameters: {parameters}")
             raise
         except Exception as e:
             logger.error(f"Unexpected error during query execution: {e}. Query: {cypher}, Parameters: {parameters}")
             raise ResponseError(f"Unexpected error during query execution: {e}") from e
    📜 Review details

    Configuration used: CodeRabbit UI
    Review profile: CHILL
    Plan: Pro

    📥 Commits

    Reviewing files that changed from the base of the PR and between 8552c4c and d88e899.

    📒 Files selected for processing (2)
    • src/graphrag_toolkit/storage/falkordb_graph_store.py (1 hunks)
    • src/graphrag_toolkit/storage/graph_store_factory.py (2 hunks)
    🧰 Additional context used
    🪛 Ruff (0.8.2)
    src/graphrag_toolkit/storage/falkordb_graph_store.py

    5-5: string imported but unused

    Remove unused import: string

    (F401)


    6-6: secrets imported but unused

    Remove unused import: secrets

    (F401)


    21-21: graphrag_toolkit.storage.graph_store.RedactedGraphQueryLogFormatting imported but unused

    Remove unused import: graphrag_toolkit.storage.graph_store.RedactedGraphQueryLogFormatting

    (F401)

    🔇 Additional comments (1)
    src/graphrag_toolkit/storage/graph_store_factory.py (1)

    60-62: LGTM!

    The FalkorDB integration follows the same pattern as other graph store types, with appropriate logging and initialization.

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