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# Pull Request Template ## Description Large emails (2MB+ with multiple attachments) were causing IMAP email processing jobs to timeout silently, blocking all subsequent emails from being processed. This created an infinite loop where: - Problematic emails were repeatedly fetched but never successfully processed - Other emails in the queue were never processed as we iterated sequentially - silent failures ### Solution Enhanced the FetchImapEmailsJob with individual email processing isolation: ### Key Changes 1. Individual Email Processing: Changed from map to each for better memory efficiency 2. Timeout Protection: Added configurable timeout per email (default: 60 seconds) 3. Failure Tracking: Track failed emails with 6-hour expiry for retry opportunities 4. Skip Logic: Skip emails that have failed 3+ times to prevent infinite loops 5. Error Isolation: Each email is processed in its own error boundary ### Configuration - Timeout: Configurable via EMAIL_PROCESSING_TIMEOUT_SECONDS using GlobalConfigService - Default: 60 seconds per email - Failure Limit: 3 attempts before skipping - Retry Window: 6 hours so that emails get 8 more chances in the 2 day window ### Benefits - Prevents queue blocking: One problematic email cannot stop others - Maintains email order: Older emails (customers waiting longer) processed first - Automatic recovery: Failed emails get retry opportunities - Better monitoring: Clear logging when emails timeout or are skipped - Configurable: Deployments can adjust the timeout based on their needs This fix ensures email processing reliability while maintaining existing functionality. ## Type of change Please delete options that are not relevant. - [x] Bug fix (non-breaking change which fixes an issue) - [x] New feature (non-breaking change which adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality not to work as expected) - [ ] This change requires a documentation update ## How Has This Been Tested? Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration. ## Checklist: - [ ] My code follows the style guidelines of this project - [ ] I have performed a self-review of my code - [ ] I have commented on my code, particularly in hard-to-understand areas - [ ] I have made corresponding changes to the documentation - [ ] My changes generate no new warnings - [ ] I have added tests that prove my fix is effective or that my feature works - [ ] New and existing unit tests pass locally with my changes - [ ] Any dependent changes have been merged and published in downstream modules |
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| .. | ||
| fetch_imap_email_inboxes_job_spec.rb | ||
| fetch_imap_emails_job_spec.rb | ||
| sync_widget_pre_chat_custom_fields_job_spec.rb | ||
| update_widget_pre_chat_custom_fields_job_spec.rb | ||