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add kafka connect sink doc #121

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add kafka connect sink doc #121

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@barakb barakb commented Jan 30, 2025

PR Type

Documentation


Description

  • Added documentation for Kafka Connect sink integration.

  • Detailed configuration properties for Kafka Sink Connector.

  • Explained Kafka message format with JSON examples.

  • Updated integration index to include Kafka Connect documentation link.


Changes walkthrough 📝

Relevant files
Documentation
index.md
Add Kafka Connect link to integration index                           

integration/index.md

  • Added a link to the Kafka Connect documentation.
  • Updated the integration index to include Kafka Connect sink.
  • +1/-0     
    kafka-connect.md
    Add Kafka Connect sink detailed documentation                       

    integration/kafka-connect.md

  • Added a new file for Kafka Connect sink documentation.
  • Included sections on obtaining and configuring the connector.
  • Provided Kafka message format explanation with JSON examples.
  • Detailed configuration properties for Kafka Sink Connector.
  • +152/-0 

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  • Summary by CodeRabbit

    • Documentation
      • Added new topic for Kafka Connect integration in the documentation.
      • Introduced comprehensive guide for configuring the FalkorDB Sink Connector.
      • Provided detailed instructions on obtaining and setting up the connector.
      • Explained Kafka message format and configuration properties.
      • Updated wordlist with new entries: kafka, readme, and github.

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    📥 Commits

    Reviewing files that changed from the base of the PR and between 2d4ba8f and d9fa3d5.

    📒 Files selected for processing (2)
    • integration/index.md (1 hunks)
    • integration/kafka-connect.md (1 hunks)

    Walkthrough

    The pull request introduces a new documentation section for FalkorDB's Kafka Connect integration. A new markdown file kafka-connect.md is added to the integration documentation, providing comprehensive guidance on using the FalkorDB Sink Connector with Apache Kafka. The documentation covers connector installation methods, configuration properties, and message format details, expanding the integration options for users.

    Changes

    File Change Summary
    integration/index.md Added link to new Kafka Connect subtopic
    integration/kafka-connect.md New documentation file for Kafka Connect sink connector
    .wordlist.txt Added new entries: kafka, readme, github

    Possibly related PRs

    • Adding links to indexing features #51: The changes in index.md involve updates to documentation formatting, which is related to enhancing the overall documentation structure, similar to the addition of the Kafka Connect topic in the main PR.
    • Add links to docs and add go lib #52: The modifications in clients.md include adding documentation links, which aligns with the main PR's goal of expanding documentation for integration options.
    • Add operation docs #61: The introduction of persistence_replication.md adds to the documentation landscape, which is consistent with the main PR's focus on enhancing the integration documentation for FalkorDB.

    Suggested reviewers

    • swilly22
    • dudizimber

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    PR Reviewer Guide 🔍

    Here are some key observations to aid the review process:

    ⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪
    🧪 No relevant tests
    🔒 Security concerns

    Sensitive information exposure:
    The documentation shows examples with default localhost URLs and no authentication. While these are just examples, it should explicitly warn users about not using default configurations in production and recommend secure connection settings for both Kafka and FalkorDB.

    ⚡ Recommended focus areas for review

    Security Guidance

    The documentation should include security best practices for configuring Kafka Connect, such as authentication and encryption settings for both Kafka and FalkorDB connections.

    - **falkor.url**: This property specifies the connection URL for FalkorDB. In this case, it points to a Redis instance
      running on `localhost` at port `6379`. This URL is crucial for establishing a connection between the Kafka connector
      and FalkorDB.
    Missing Information

    The documentation lacks error handling scenarios and troubleshooting guidance for common issues that may occur during connector setup and operation.

    ### **Configuring the connector**
    
    Kafka Connector Properties Explanation
    
    This document provides a detailed explanation of the properties used to configure the FalkorDB Sink Connector for Apache
    Kafka. The configuration is specified in a properties file format.
    

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    PR Code Suggestions ✨

    Explore these optional code suggestions:

    CategorySuggestion                                                                                                                                    Score
    Security
    Document secure connection configuration

    Add security considerations section to address authentication and encryption
    requirements for the FalkorDB connection.

    integration/kafka-connect.md [56-58]

     - **falkor.url**: This property specifies the connection URL for FalkorDB. In this case, it points to a Redis instance
     running on `localhost` at port `6379`. This URL is crucial for establishing a connection between the Kafka connector
    -and FalkorDB.
    +and FalkorDB. For production deployments, use TLS encryption and authentication credentials in the URL format: 
    +`redis://username:password@hostname:port?ssl=true`.
    • Apply this suggestion
    Suggestion importance[1-10]: 8

    Why: Security documentation is critical for production deployments. The suggestion adds essential information about authentication and TLS encryption, which is particularly important given this is a database connector.

    8
    General
    Add error handling documentation

    Add a section about error handling and data validation to help users handle failed
    messages and ensure data integrity.

    integration/kafka-connect.md [77-82]

     ### *Kafka message format*
     
     #### JSON Structure Overview
     
     The message is an array containing multiple objects, each representing a command to be executed on the graph database.
     Below is a breakdown of the key components of each message object.
     
    +#### Error Handling and Validation
    +- Messages that fail to parse or execute will be sent to a dead letter queue
    +- Ensure all required fields (graphName, command, cypherCommand) are present
    +- Validate parameter types match Cypher query expectations
    +
    • Apply this suggestion
    Suggestion importance[1-10]: 7

    Why: Adding error handling and validation documentation is important for production deployments, helping users handle edge cases and ensure data integrity. The suggestion provides practical guidance on message validation and error handling.

    7

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    CI Feedback 🧐

    A test triggered by this PR failed. Here is an AI-generated analysis of the failure:

    Action: check-spelling

    Failed stage: Check Spelling [❌]

    Failed test name: spelling-check

    Failure summary:

    The spelling check action failed because it detected misspelled words in the documentation files.
    Specifically:

  • The word kafka was flagged as misspelled in the file integration/kafka-connect.md
  • The spelling checker considers technical terms like 'kafka' as spelling errors, which is likely a
    false positive in this context

  • Relevant error logs:
    1:  ##[group]Operating System
    2:  Ubuntu
    ...
    
    570:  Misspelled words:
    571:  <htmlcontent> integration/kafka-connect.md: html>body>ul>li
    572:  --------------------------------------------------------------------------------
    573:  kafka
    574:  --------------------------------------------------------------------------------
    575:  > Processing: integration/rest.md
    576:  > Processing: integration/index.md
    577:  > Processing: README.md
    578:  !!!Spelling check failed!!!
    579:  ##[error]Files in repository contain spelling errors
    

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    Actionable comments posted: 3

    🧹 Nitpick comments (3)
    integration/kafka-connect.md (3)

    4-4: Enhance the description metadata.

    The current description "Kafka Connect sink detailed doc" is too generic. Consider providing more context about the integration purpose.

    -description: "Kafka Connect sink detailed doc"
    +description: "Learn how to use FalkorDB Sink Connector with Apache Kafka to replicate data from external systems"
    🧰 Tools
    🪛 GitHub Actions: spellcheck

    [warning] Potential spelling errors found: 'github', 'readme', 'kafka'. These might be technical terms that need to be added to the dictionary.


    25-75: Add security and validation details to properties documentation.

    The properties documentation is comprehensive but could be enhanced with:

    1. Security-related properties (e.g., authentication, SSL/TLS configuration)
    2. Validation rules (e.g., required vs optional, allowed values, default values)

    Consider adding sections like:

    #### Security Properties
    
    - **falkor.username**: (Optional) Username for FalkorDB authentication
    - **falkor.password**: (Optional) Password for FalkorDB authentication
    - **falkor.ssl.enabled**: (Optional) Enable SSL/TLS connection. Default: false
    
    #### Property Validation Rules
    
    | Property | Required | Default | Allowed Values |
    |----------|----------|---------|----------------|
    | name | Yes | - | Non-empty string |
    | tasks.max | No | 1 | Positive integer |
    | topics | Yes | - | Comma-separated list |
    🧰 Tools
    🪛 LanguageTool

    [uncategorized] ~41-~41: Possible missing comma found.
    Context: ...ing this number can improve throughput but may require additional resources. - **...

    (AI_HYDRA_LEO_MISSING_COMMA)

    🪛 GitHub Actions: spellcheck

    [warning] Potential spelling errors found: 'github', 'readme', 'kafka'. These might be technical terms that need to be added to the dictionary.


    77-152: Enhance message format documentation with error handling and validation.

    Consider adding the following sections to make the documentation more robust:

    1. Error handling for invalid messages
    2. Message size limits
    3. Required vs optional fields in the message structure

    Example addition:

    #### Message Validation
    
    - All fields (`graphName`, `command`, `cypherCommand`) are required
    - Maximum message size: 1MB
    - Array can contain up to 1000 commands per message
    
    #### Error Handling
    
    The connector will:
    - Skip individual commands that fail validation
    - Log detailed error messages for debugging
    - Continue processing subsequent commands in the array
    
    Example error scenarios:
    ```json
    [
      {
        "graphName": "falkordb",
        "command": "INVALID_COMMAND",  // Will be skipped, error logged
        "cypherCommand": "CREATE (p:Person) RETURN p"
      }
    ]
    
    <details>
    <summary>🧰 Tools</summary>
    
    <details>
    <summary>🪛 GitHub Actions: spellcheck</summary>
    
    [warning]  Potential spelling errors found: 'github', 'readme', 'kafka'. These might be technical terms that need to be added to the dictionary.
    
    </details>
    
    </details>
    
    </blockquote></details>
    
    </blockquote></details>
    
    <details>
    <summary>📜 Review details</summary>
    
    **Configuration used: CodeRabbit UI**
    **Review profile: CHILL**
    **Plan: Pro**
    
    <details>
    <summary>📥 Commits</summary>
    
    Reviewing files that changed from the base of the PR and between f571c1581b36b33272d67e3e45050d91324be31d and d9f6944a0b29a24c4f2eae07b3b0a5275cad95b7.
    
    </details>
    
    <details>
    <summary>📒 Files selected for processing (2)</summary>
    
    * `integration/index.md` (1 hunks)
    * `integration/kafka-connect.md` (1 hunks)
    
    </details>
    
    <details>
    <summary>🧰 Additional context used</summary>
    
    <details>
    <summary>🪛 LanguageTool</summary>
    
    <details>
    <summary>integration/index.md</summary>
    
    [uncategorized] ~17-~17: The preposition ‘to’ seems more likely in this position.
    Context: ... with FalkorDB using Kafka Connect sink for replicate data from 3rd party applicati...
    
    (AI_HYDRA_LEO_REPLACE_FOR_TO)
    
    ---
    
    [uncategorized] ~17-~17: This verb may not be in the correct form. Consider using a different form for this context.
    Context: ...h FalkorDB using Kafka Connect sink for replicate data from 3rd party applications.  
    
    (AI_EN_LECTOR_REPLACEMENT_VERB_FORM)
    
    </details>
    <details>
    <summary>integration/kafka-connect.md</summary>
    
    [uncategorized] ~41-~41: Possible missing comma found.
    Context: ...ing this number can improve   throughput but may require additional resources.  - **...
    
    (AI_HYDRA_LEO_MISSING_COMMA)
    
    </details>
    
    </details>
    <details>
    <summary>🪛 GitHub Actions: spellcheck</summary>
    
    <details>
    <summary>integration/kafka-connect.md</summary>
    
    [warning]  Potential spelling errors found: 'github', 'readme', 'kafka'. These might be technical terms that need to be added to the dictionary.
    
    </details>
    
    </details>
    
    </details>
    
    </details>
    
    <!-- This is an auto-generated comment by CodeRabbit for review status -->
    

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    @barakb barakb requested review from gkorland and danshalev7 January 30, 2025 09:24
    @@ -0,0 +1,152 @@
    ---
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    Title: "Kafka Connect sink"
    nav_order: 2
    Description: "Kafka Connect sink detailed doc"
    Parent: "integration"

    - [Kafka message format](#kafka-message-format)
    ---

    ### **Obtaining the connector**
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    Obtaining the Connector

    You can build the connector from source or download the pre-built JAR file from the releases. The GitHub repository includes a README with instructions for running the connector locally.

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