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Added sync slack history #1032

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Yashgupta9330
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@Yashgupta9330 Yashgupta9330 commented Mar 6, 2025

resolves #923

  • conversation models
  • sync command
  • test for model and command

@Yashgupta9330 Yashgupta9330 requested a review from arkid15r as a code owner March 6, 2025 20:50
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Summary by CodeRabbit

  • New Features
    • Introduced a new command that synchronizes Slack conversation lists with configurable options.
    • Enhanced Slack conversation management in the admin panel, offering improved display, search, and filtering capabilities.
    • Enabled bulk processing of Slack conversation data for more efficient updates.
  • Chores
    • Updated the underlying database structure for Slack conversations to improve data integrity and flexibility.

Walkthrough

This update adds new functionality to manage and synchronize Slack conversations within the backend. A Makefile target is introduced to trigger a new Django management command that handles Slack conversation synchronization, including error handling and paging. Additionally, a new Conversation model is defined and migrated with related methods for processing Slack data, and a dedicated admin configuration is provided for managing these conversations through the Django admin interface.

Changes

File(s) Change Summary
backend/Makefile Added a new target slack-sync-conversation-list that executes a Python management command to synchronize Slack conversation lists.
backend/apps/slack/admin.py Introduced a ConversationAdmin class for configuring the Django admin interface for Conversation objects, including list display, search fields, filters, read-only fields, and field grouping. Registered the Conversation model for admin management.
backend/apps/slack/migrations/0004_conversation.py
backend/apps/slack/models/conversation.py
Added a new Conversation model with fields for managing Slack conversation data. The migration file creates the Conversation table, while the model file implements methods for preparing and bulk saving data from Slack API responses.
backend/apps/slack/management/commands/slack_sync_conversation_list.py Introduced a new management command to synchronize Slack channels and groups, with command-line arguments for batch size, delay, and dry run options. Includes methods for handling command execution and fetching conversations from the Slack API.
backend/apps/slack/migrations/0005_alter_conversation_created_at_and_more.py Modified fields in the conversation model to allow null values and set specific attributes, including making entity_id unique and defining defaults for Boolean fields.

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@Yashgupta9330 Yashgupta9330 marked this pull request as draft March 6, 2025 20:51
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Actionable comments posted: 1

🧹 Nitpick comments (2)
backend/apps/owasp/management/commands/slack_sync_conversation_list.py (2)

36-72: Add token validation and consider API rate limits

The method should validate that the Slack token exists before making API calls. Also, consider implementing rate limiting to avoid hitting Slack API limits.

 def sync_slack_conversations(self, settings, conversation_model):
     slack_token = settings.SLACK_BOT_TOKEN  # Access the token from settings
+    if not slack_token:
+        raise SlackSyncError("SLACK_BOT_TOKEN is not configured")
+        
     url = "https://slack.com/api/conversations.list"
     params = {
         "limit": 200,
         "exclude_archived": False,
         "types": "public_channel,private_channel",
     }
     headers = {"Authorization": f"Bearer {slack_token}"}

     next_cursor = None
     total_processed = 0

     while True:
         if next_cursor:
             params["cursor"] = next_cursor

         response = requests.get(url, headers=headers, params=params, timeout=10)
         data = response.json()

         if not data.get("ok"):
             error_msg = f"Slack API error: {data.get('error', 'Unknown error')}"
             logger.error(error_msg)
             raise SlackSyncError(error_msg)

         conversations = data.get("channels", [])
         self.process_conversations(conversations, conversation_model)
         total_processed += len(conversations)

         self.stdout.write(f"Processed {len(conversations)} conversations...")

         next_cursor = data.get("response_metadata", {}).get("next_cursor")
         if not next_cursor:
             break
+
+        # Add a small delay to respect rate limits if we're continuing pagination
+        if next_cursor:
+            import time
+            time.sleep(1)  # 1 second delay between requests

     return total_processed

73-108: Consider batching database operations

For better performance with large datasets, consider processing conversations in smaller batches instead of wrapping the entire operation in a single transaction.

-@transaction.atomic
 def process_conversations(self, conversations, conversation_model):
+    # Process in smaller batches for better performance
+    batch_size = 50
+    for i in range(0, len(conversations), batch_size):
+        batch = conversations[i:i+batch_size]
+        self._process_conversation_batch(batch, conversation_model)
+
+@transaction.atomic
+def _process_conversation_batch(self, conversations, conversation_model):
     for conversation in conversations:
         try:
             # Convert Unix timestamp to datetime
             created_timestamp = int(conversation.get("created", 0))
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Reviewing files that changed from the base of the PR and between 6beafae and 4c68447.

📒 Files selected for processing (4)
  • backend/Makefile (1 hunks)
  • backend/apps/owasp/admin.py (3 hunks)
  • backend/apps/owasp/management/commands/slack_sync_conversation_list.py (1 hunks)
  • backend/apps/owasp/models/conversation.py (1 hunks)
🔇 Additional comments (8)
backend/Makefile (1)

81-84: Good implementation of the sync conversation target

The new Makefile target follows the established pattern of other targets in the file, with clear echo message and appropriate command execution.

backend/apps/owasp/admin.py (3)

8-8: LGTM!

Clean import of the new Conversation model.


176-182: LGTM - Admin configuration matches other model admins

The ConversationAdmin implementation follows the established pattern in this codebase for admin configurations.


192-192: LGTM!

Properly registered the Conversation model with its admin class.

backend/apps/owasp/models/conversation.py (2)

6-12: LGTM!

Good model definition with appropriate Meta configuration.


23-25: LGTM!

Good implementation of string representation method.

backend/apps/owasp/management/commands/slack_sync_conversation_list.py (2)

13-15: LGTM!

Good implementation of a custom exception class for handling Slack-specific errors.


20-35: LGTM - Robust error handling in command handler

The handle method includes comprehensive error handling and provides meaningful output to both logs and console.

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Actionable comments posted: 0

🔭 Outside diff range comments (1)
backend/apps/owasp/management/commands/slack_sync_conversation_list.py (1)

1-138: 💡 Verification agent

❓ Verification inconclusive

Consider adding unit tests for this command

This new command would benefit from unit tests to ensure proper functionality, especially around error handling and data processing. Consider adding tests that mock the Slack API responses for various scenarios.


🏁 Script executed:

#!/bin/bash
# Check if there are any test files for this command
fd "test.*slack_sync_conversation_list" -t f --full-path

Length of output: 58


Action Required: Add Unit Tests for Slack Sync Command
The current command lacks unit tests, which are essential for ensuring proper behavior in error scenarios and correct data processing. Please add tests that:

  • Mock Slack API responses (both success and error cases) to simulate different conditions.
  • Verify proper exception handling when a token is missing or when the API returns an error.
  • Confirm that conversation records are appropriately created or updated.

This will help prevent regressions and ensure that the command handles various scenarios as expected.

🧹 Nitpick comments (10)
backend/apps/owasp/models/conversation.py (1)

15-24: Add indexes for frequently queried fields
If you frequently filter or search by creator_id, name, or entity_id, consider adding indexes to ensure lookup queries remain fast for large Slack workspace data.

backend/apps/owasp/migrations/0023_conversation.py (1)

30-30: Use a DateTimeField for timestamps
Storing timestamps in a CharField is error-prone. Prefer a DateTimeField with auto_now or auto_now_add to accurately track changes.

backend/apps/owasp/admin.py (2)

179-181: Display 'nest_updated_at' if tracking recent changes is valuable
You might want to show nest_updated_at in list_display or mark it read-only if you need visibility of the most recent Slack sync updates.


183-183: Enhance handling of Slack creator IDs
Since creator_id represents a Slack user, consider mapping it to a local user or storing additional metadata. This could simplify queries and auditing of conversation ownership.

backend/apps/owasp/management/commands/slack_sync_conversation_list.py (6)

36-52: Consider adding detailed logging for better debugging

The error handling is good, but the exception message only includes the string representation of the exception. For complex errors, it might be helpful to log additional context such as the batch size and delay parameters.

-            error_msg = f"Failed to sync Slack conversations: {e}"
+            error_msg = f"Failed to sync Slack conversations: {e}. Batch size: {batch_size}, Delay: {delay}"

54-65: Consider extracting API URL and parameters to constants

For maintainability, consider extracting the API URL and fixed parameters to constants at the module level or class level variables. This would make updates easier and reduce potential errors.

+SLACK_CONVERSATIONS_API_URL = "https://slack.com/api/conversations.list"
+DEFAULT_CONVERSATION_TYPES = "public_channel,private_channel"

 def sync_slack_conversations(self, conversation_model, batch_size=200, delay=0.5):
     slack_token = getattr(settings, "SLACK_BOT_TOKEN", None)
     if not slack_token:
         raise SlackSyncError(SlackSyncError.MISSING_TOKEN_ERROR)

-    url = "https://slack.com/api/conversations.list"
+    url = SLACK_CONVERSATIONS_API_URL
     params = {
         "limit": batch_size,
         "exclude_archived": False,
-        "types": "public_channel,private_channel",
+        "types": DEFAULT_CONVERSATION_TYPES,
     }

74-80: Add more specific API error handling

The current implementation treats all API errors the same way. Consider adding more specific handling for common API errors, such as rate limiting (error code: "ratelimited") or token-related issues.

 if not data.get("ok"):
-    error_msg = f"Slack API error: {data.get('error', 'Unknown error')}"
-    logger.error(error_msg)
-    raise SlackSyncError(error_msg)
+    error_type = data.get('error', 'Unknown error')
+    error_msg = f"Slack API error: {error_type}"
+    logger.error(error_msg)
+    
+    if error_type == "ratelimited":
+        # Handle rate limiting - could implement exponential backoff
+        logger.warning("Rate limited by Slack API. Implementing delay and retrying...")
+        time.sleep(delay * 2)  # Increase delay for rate limiting
+        # Could implement retry logic here
+    
+    raise SlackSyncError(SlackSyncError.API_ERROR_FORMAT.format(error_type))

93-94: Consider implementing adaptive rate limiting

The current implementation uses a fixed delay between requests. Consider implementing adaptive rate limiting based on Slack API response headers (e.g., Retry-After) for more efficient API usage.

 # Add a small delay to avoid rate limiting
-time.sleep(delay)
+retry_after = response.headers.get('Retry-After')
+if retry_after:
+    # If Slack provides a Retry-After header, respect it
+    wait_time = float(retry_after)
+    logger.info(f"Slack API requested delay of {wait_time}s before next request")
+    time.sleep(wait_time)
+else:
+    time.sleep(delay)

102-116: Enhance error handling for timestamp conversion

The timestamp conversion could fail if the API returns an invalid value. Consider adding specific error handling for this case.

 try:
     # Convert Unix timestamp to datetime
     created_timestamp = int(conversation.get("created", 0))
-    created_datetime = datetime.fromtimestamp(created_timestamp, tz=timezone.utc)
+    try:
+        created_datetime = datetime.fromtimestamp(created_timestamp, tz=timezone.utc)
+    except (ValueError, OverflowError) as e:
+        logger.warning(f"Invalid timestamp {created_timestamp} for conversation {conversation.get('id')}: {e}")
+        created_datetime = datetime.now(tz=timezone.utc)  # Fallback to current time

128-135: Consider more granular exception handling

The current implementation catches all exceptions together. Consider adding more specific exception handling for different error types to improve debugging and error recovery.

 except KeyError:
     logger.exception("Missing required field in conversation data")
     continue
-except Exception:
-    logger.exception(
-        "Error processing conversation %s", conversation.get("id", "unknown")
-    )
+except ValueError as e:
+    logger.exception(
+        "Value error processing conversation %s: %s", conversation.get("id", "unknown"), str(e)
+    )
+    continue
+except Exception as e:
+    logger.exception(
+        "Unexpected error processing conversation %s: %s", conversation.get("id", "unknown"), str(e)
+    )
     continue
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📒 Files selected for processing (5)
  • backend/apps/owasp/admin.py (3 hunks)
  • backend/apps/owasp/management/commands/slack_sync_conversation_list.py (1 hunks)
  • backend/apps/owasp/migrations/0023_conversation.py (1 hunks)
  • backend/apps/owasp/migrations/0024_remove_conversation_updated_at_and_more.py (1 hunks)
  • backend/apps/owasp/models/conversation.py (1 hunks)
⏰ Context from checks skipped due to timeout of 90000ms (5)
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  • GitHub Check: Run backend tests
  • GitHub Check: Run frontend e2e tests
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🔇 Additional comments (4)
backend/apps/owasp/models/conversation.py (1)

8-10: Consider reconciling the 'created_at' field with 'TimestampedModel'
Since TimestampedModel likely provides its own timestamps, overlapping a Slack “created_at” with the parent’s creation timestamp can be confusing. Consider renaming the conversation’s field to slack_created_at or removing it if the parent’s timestamp is sufficient.

backend/apps/owasp/migrations/0024_remove_conversation_updated_at_and_more.py (1)

12-37: Verify interplay of multiple timestamps
This migration removes updated_at and adds nest_created_at/nest_updated_at. Confirm that created_at (and any fields from TimestampedModel) do not create ambiguity. If created_at is purely Slack-specific, renaming it to slack_created_at may help distinguish it.

backend/apps/owasp/management/commands/slack_sync_conversation_list.py (2)

97-98: Good use of @transaction.atomic

The use of the atomic transaction decorator is appropriate here, ensuring that database operations within the method are wrapped in a transaction for consistency.


15-20:

✅ Verification successful

Good error handling design with clear error messages

The custom exception class is well designed with specific error messages. The noqa: S105 comment should be revisited to ensure it's necessary - it's typically used to suppress security warnings for hardcoded passwords or tokens, which doesn't seem applicable here.


🏁 Script executed:

#!/bin/bash
# Check if other files in the project use similar noqa comments
rg "noqa: S105" --type py

Length of output: 412


Attention: Consistent Use of noqa: S105 in Error Handling

The custom exception class is well designed and provides clear error messages. Notably, the # noqa: S105 comment is also used in other files (e.g., in backend/apps/core/models/prompt.py and backend/apps/slack/apps.py), which indicates a consistent project-wide approach to suppressing the S105 warning. Please verify that this suppression is still appropriate according to our current security guidelines. If it's confirmed as a deliberate and valid suppression of a false positive, no change is needed.

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Please address the following when you get a chance:

@github-actions github-actions bot added nestbot and removed backend labels Mar 8, 2025
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Actionable comments posted: 0

🧹 Nitpick comments (5)
backend/apps/slack/models/conversation.py (1)

1-1: Update docstring to accurately reflect Slack app.

The docstring incorrectly refers to "OWASP app conversation models" when this file is in the slack app.

-"""OWASP app conversation models."""
+"""Slack app conversation models."""
backend/apps/owasp/management/commands/slack_sync_conversation_list.py (4)

67-67: Consider moving the import to the module level

Importing the Conversation model inside the handle method may make the code harder to understand. Unless there's a specific reason for this local import (like avoiding circular imports), consider moving it to the module level.

import logging
import time
from datetime import datetime, timezone
from functools import lru_cache

from django.conf import settings
from django.core.management.base import BaseCommand
from django.db import transaction
from slack_bolt import App
from slack_sdk.errors import SlackApiError
+from apps.slack.models.conversation import Conversation

logger = logging.getLogger(__name__)

178-182: Good exception handling, but consider adding retries for transient errors

The current exception handling correctly captures and logs different error types. For transient errors like connectivity issues, consider implementing a retry mechanism before giving up completely.

try:
    # Fetch batch of conversations
    result = app.client.conversations_list(
        limit=batch_size,
        exclude_archived=False,
        types="public_channel,private_channel",
        cursor=next_cursor or None,
    )
    
    # Rest of the code...
    
except SlackApiError as e:
    handle_api_error(e, f"Error calling Slack API: {e}")
except (ValueError, TypeError, ConnectionError) as e:
+    # For connection errors, we could retry a few times
+    if isinstance(e, ConnectionError) and retry_count < MAX_RETRIES:
+        logger.warning(f"Connection error, retrying ({retry_count+1}/{MAX_RETRIES}): {e}")
+        retry_count += 1
+        time.sleep(retry_delay * (2 ** retry_count))  # Exponential backoff
+        continue
    handle_api_error(e, f"Unexpected error: {e}")

266-272: Consider narrowing the exception scope

The broad exception handler with # pylint: disable=broad-except is typically discouraged. While it's good that you have a comment explaining the lint exception, consider catching more specific exceptions if possible.

-            except Exception:  # pylint: disable=broad-except
+            except (AttributeError, ValueError, TypeError) as e:  # More specific exceptions
                 # TRY401 fix - remove exception object from logging call
                 logger.exception(
                     "Error processing conversation %s",
                     conversation.get("id", "unknown"),
                 )
                 continue

258-261: Consider adding validation before creating new conversations

Before creating new conversation records, it might be beneficial to add additional validation to ensure all required fields are present and valid.

else:
    # Create new
+   # Validate required fields
+   if not channel_data["name"]:
+       logger.warning("Skipping conversation %s with empty name", channel_id)
+       continue
+        
    new_conversation = conversation_model(entity_id=channel_id, **channel_data)
    to_create.append(new_conversation)
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📒 Files selected for processing (5)
  • backend/apps/owasp/management/commands/slack_sync_conversation_list.py (1 hunks)
  • backend/apps/owasp/migrations/0025_delete_conversation.py (1 hunks)
  • backend/apps/slack/admin.py (2 hunks)
  • backend/apps/slack/migrations/0004_conversation.py (1 hunks)
  • backend/apps/slack/models/conversation.py (1 hunks)
⏰ Context from checks skipped due to timeout of 90000ms (5)
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  • GitHub Check: Run frontend unit tests
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🔇 Additional comments (14)
backend/apps/owasp/migrations/0025_delete_conversation.py (1)

1-16: Migration looks correct for removing the Conversation model from the owasp app.

This migration properly removes the Conversation model from the owasp app. This appears to be part of a deliberate refactoring to move the Conversation model from the owasp app to the slack app (seen in the other files), which makes logical sense for better code organization.

backend/apps/slack/models/conversation.py (2)

8-23: Model fields and structure look good.

The Conversation model is well-structured with appropriate fields for storing Slack conversation data. The entity_id field is properly marked as unique, and fields like is_private, is_archived, and is_general have sensible default values.


25-27: String representation is appropriate.

Using the conversation name for the string representation is a good choice for readability in the admin interface and debugging.

backend/apps/slack/migrations/0004_conversation.py (1)

1-38: Migration for creating the Conversation model looks good.

The migration correctly establishes the Conversation model with all necessary fields and properties. It depends on the appropriate previous migration and creates the database structure with proper field types and constraints.

backend/apps/slack/admin.py (3)

5-5: Import looks good.

The import properly references the new Conversation model from its correct location.


20-59: Admin configuration is well-structured and comprehensive.

The ConversationAdmin class provides a good user experience with appropriate list displays, search fields, filters, and fieldset organization. Setting entity_id, created_at, and creator_id as readonly_fields is a sensible choice since these values should not be modified through the admin interface.


62-62: Registration of admin model is correct.

The Conversation model is properly registered with the ConversationAdmin configuration.

backend/apps/owasp/management/commands/slack_sync_conversation_list.py (7)

1-14: Nice design choice using slack-bolt for API integration

The command correctly implements the slack-bolt library as suggested in the previous review, which is the recommended approach for Slack API integration. Good job on structuring the imports and setting up logging appropriately.


24-31: Good use of lru_cache for the Slack app instance

The @lru_cache decorator is an excellent choice here to avoid creating multiple Slack app instances. This improves performance and ensures consistency in the API client throughout command execution.


33-38: Well-designed error handling approach

The centralized error handling function ensures consistent error processing throughout the code. This is a good practice that makes the codebase more maintainable.


117-133: Good optimization by pre-loading existing data

Fetching existing conversations upfront with .only() to include just the needed fields is an excellent optimization. This minimizes database queries and reduces memory usage when processing large datasets.


184-205: Excellent use of bulk operations and transaction

Using transaction.atomic() with bulk operations is the right approach for maintaining data consistency while maximizing performance. The selection of fields for bulk_update is comprehensive and well-defined.


40-96: Well-structured command implementation

The Command class follows Django's best practices with clear separation of concerns between argument definition, main handling logic, and error management. Good job on providing helpful descriptions for command-line arguments and implementing a dry-run mode for testing.


175-177:

✅ Verification successful

Consider implementing exponential backoff for rate limiting

While the current delay approach works, consider implementing an exponential backoff strategy for rate limiting. This would provide better protection against Slack API rate limits, especially when processing large workspaces.

# Rate limiting protection
if delay > 0:
-    time.sleep(delay)
+    # Simple implementation of exponential backoff with jitter
+    jitter = random.uniform(0.1, 0.3)  # Add randomness to avoid thundering herd
+    backoff_delay = delay * (1 + jitter)
+    time.sleep(backoff_delay)

You would also need to add import random at the top of the file.

Could you check Slack's rate limiting documentation to confirm their recommended approach for handling rate limits? This would ensure our implementation follows best practices.


🌐 Web query:

What is Slack API's rate limiting policy and recommended approach for handling rate limits?

💡 Result:

Slack's API rate limiting policy uses a tiered system to balance performance and prevent abuse, with enforcement mechanisms and recommended handling approaches varying by API method and usage context. Here's a structured breakdown:

Rate Limit Tiers

Slack categorizes Web API methods into four tiers with per-minute limits[1][4]:

Tier Requests/Minute Typical Use Cases
1 1+ Infrequent access methods
2 20+ Basic operations like conversations.list
3 50+ Paginated collections access
4 100+ High-volume endpoints

Special-tier methods like chat.postMessage enforce 1 message/second/channel with burst tolerance[4][12]. Events API allows 30,000 events/hour/workspace[2][10].

Enforcement Characteristics

  • Per-app/workspace basis: All tokens (user/bot) share the same quota pool[1][4]
  • Dynamic evaluation: Burst limits allow temporary overages but penalize sustained violations[4]
  • Pagination impact: Methods like users.list enforce stricter limits without proper cursor pagination[4][9]

Rate Limit Responses

When exceeding limits, Slack returns:

HTTP/1.1 429 Too Many Requests
Retry-After: 30

The Retry-After header specifies wait time in seconds[1][4]. For Events API violations, you'll receive app_rate_limited events[10][11].

Recommended Handling Strategies

  1. Architectural Optimization

    • Implement LRU caching for frequently accessed data[7][9]
    • Use pagination with <200 results/page for collection methods[9]
    • Batch operations using users.counts instead of individual lookups[8]
  2. Technical Implementation

    • Respect Retry-After headers with exponential backoff[3][6]
    // Node.js SDK automatic handling
    const { WebClient } = require('@slack/web-api');
    const web = new WebClient(token, { 
      retryConfig: { retries: 3 }
    });
    • Monitor remaining quota via response headers[3]:
      • X-RateLimit-Limit
      • X-RateLimit-Remaining
  3. Operational Best Practices

    • Review method-specific tiers in API documentation[4]
    • Maintain >5% success rate for Events API responses[10]
    • Use separate queues per workspace/method combination[7]
    • Consider third-party logging services for high-volume messaging[4]

For enterprise-scale implementations, Slack recommends:

  • Distributed request processing across multiple servers
  • Token rotation strategies for SCIM API operations[13]
  • IP allowlisting for critical endpoints[14]

Developers should implement proactive monitoring and use official SDKs that handle rate limiting automatically[5][15]. When designing high-throughput applications, test against tier limits during development and maintain buffer capacity of 20% below documented thresholds[1][4].

Citations:


Enhance Slack API Rate Limit Handling with Exponential Backoff

Based on Slack’s documentation—which advises respecting the Retry-After header and using exponential backoff with jitter when rate limits are encountered—the suggestion to replace a fixed delay with an exponential strategy is appropriate. For this context, consider updating the code as follows:

  • Code Update (backend/apps/owasp/management/commands/slack_sync_conversation_list.py, Lines 175-177):

    # Rate limiting protection
    if delay > 0:
    -    time.sleep(delay)
    +    # Enhanced exponential backoff with jitter as per Slack recommendations
    +    jitter = random.uniform(0.1, 0.3)  # Introduce randomness to prevent a thundering herd
    +    backoff_delay = delay * (1 + jitter)
    +    time.sleep(backoff_delay)
  • Additional Note:
    Ensure you add import random at the top of the file. While this simple exponential backoff implementation is a solid improvement, if your API responses provide a Retry-After header, consider integrating it for dynamic delay adjustments.

These changes align with Slack’s best practices for handling rate limits.

@Yashgupta9330 Yashgupta9330 marked this pull request as ready for review March 9, 2025 18:15
@Yashgupta9330 Yashgupta9330 requested a review from arkid15r March 9, 2025 18:19
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Please address the following improvements suggestions when you get a chance:

from django.conf import settings
from django.core.management.base import BaseCommand
from django.db import transaction
from slack_bolt import App
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Use one from slack/apps.py

new_creates, new_updates = self._prepare_conversation_changes(
conversations, conversation_model, existing_channels
)
to_create.extend(new_creates)
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We have examples of bulk_update custom methods that take care of creations/updates for models. Please implement it in the same way.


return total_processed

def _prepare_conversation_changes(self, conversations, conversation_model, existing_channels):
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This has to be a part of the Conversation model. Also implement based on existing examples.

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Actionable comments posted: 2

🧹 Nitpick comments (2)
backend/apps/slack/models/conversation.py (1)

34-108: Robust error handling in prepare_from_slack_data method

The method effectively handles potential data inconsistencies from the Slack API:

  • Checks for missing channel IDs
  • Properly handles nested data structures (topic, purpose)
  • Provides appropriate default values
  • Implements comprehensive error logging

Consider optimizing the update path by checking if fields have actually changed before adding to the to_save list to reduce unnecessary database operations.

 if channel_id in entity_id_map:
     # Update existing instance
     instance = entity_id_map[channel_id]
+    # Check if any field has changed before adding to to_save
+    changed = False
     for field, value in channel_data.items():
-        setattr(instance, field, value)
-    to_save.append(instance)
+        if getattr(instance, field) != value:
+            setattr(instance, field, value)
+            changed = True
+    if changed:
+        to_save.append(instance)
backend/apps/slack/management/commands/slack_sync_conversation_list.py (1)

86-160: Comprehensive Slack API interaction with pagination

The sync method successfully handles:

  • API client configuration validation
  • Pagination for retrieving large datasets
  • Transaction management for database consistency
  • Rate limiting to avoid API throttling
  • Error handling for various failure scenarios

Consider adding a more detailed progress indicator for large datasets and fixing the inconsistent messaging in dry-run mode.

 if not dry_run:
     self.stdout.write(f"Saved {total_saved} conversations")
+else:
+    self.stdout.write(f"Would have saved {total_processed} conversations (dry run)")
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  • backend/Makefile (1 hunks)
  • backend/apps/slack/management/commands/slack_sync_conversation_list.py (1 hunks)
  • backend/apps/slack/models/conversation.py (1 hunks)
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🔇 Additional comments (5)
backend/apps/slack/models/conversation.py (2)

16-19: Models Meta class looks good with proper table name and plural name

The Meta class is properly configured with the appropriate database table name and verbose name plural. All model fields have proper verbose names as previously requested in review comments.


20-28: Field definitions follow good practices

The model fields are well-defined with appropriate types, verbose names, and constraints:

  • entity_id is correctly set as unique
  • Text fields have appropriate defaults
  • Boolean fields have sensible default values
  • Timestamps are properly handled with null/blank options

This follows Django best practices and ensures data integrity.

backend/apps/slack/management/commands/slack_sync_conversation_list.py (3)

15-26: Well-structured error handling

The custom SlackSyncError exception and handle_api_error helper function create a consistent and robust error handling pattern. This approach centralizes error handling logic and ensures errors are properly logged and propagated.


34-53: Command arguments provide good flexibility

The command arguments are well-defined with sensible defaults:

  • batch-size for controlling API request size
  • delay for rate limiting
  • dry-run for testing without making changes

This provides flexibility for different use cases and environments while maintaining clear documentation for each option.


54-85: Handle method follows Django best practices

The method correctly:

  • Imports the model inside the method to avoid circular imports
  • Extracts command options with appropriate defaults
  • Provides clear status output using Django's styling
  • Implements comprehensive error handling

This follows Django management command best practices.

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Actionable comments posted: 0

🧹 Nitpick comments (1)
backend/apps/slack/management/commands/slack_sync_conversation_list.py (1)

20-39: Consider adding test coverage for command arguments.

While your command-line arguments (--batch-size, --delay, and --dry-run) look well-defined, it would be beneficial to include unit or integration tests that verify the command’s behavior under different argument values to ensure correctness and maintainability.

I can provide a starter test script or open a tracking issue for further test coverage—just let me know.

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📒 Files selected for processing (3)
  • backend/apps/slack/management/commands/slack_sync_conversation_list.py (1 hunks)
  • backend/apps/slack/migrations/0005_alter_conversation_created_at_and_more.py (1 hunks)
  • backend/apps/slack/models/conversation.py (1 hunks)
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🔇 Additional comments (2)
backend/apps/slack/management/commands/slack_sync_conversation_list.py (1)

106-141: Reintroduce retry logic for transient Slack API errors.

This logic loop handles Slack API calls and basic errors but still lacks a retry mechanism for transient failures (e.g., temporary network issues, Slack downtime). Implementing an exponential backoff strategy (e.g., using Tenacity) helps improve reliability for production systems.

backend/apps/slack/migrations/0005_alter_conversation_created_at_and_more.py (1)

11-57: Migration changes look valid.

These alterations to field definitions (e.g., making created_at nullable and adding defaults for boolean and text fields) appear consistent with the model updates, ensuring proper schema alignment.

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Sync OWASP Slack Workspace Channels/Groups List
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