added skipping for mail without attachments and already processed mail #13
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WalkthroughThe changes update the email processing logic in Changes
Sequence Diagram(s)sequenceDiagram
participant Worker as Email Worker
participant Cache as Processed Emails (JSON)
participant Mailbox as Email Server
Worker->>Cache: load_processed_emails()
loop For Each Mailbox
Worker->>Worker: check_and_pull_mailbox()
Worker->>Mailbox: Fetch emails (last 7 days)
Mailbox-->>Worker: Return emails
alt Email has valid Message-ID
Worker->>Worker: Process email
Worker->>Worker: fetch_attachments_and_enqueue(email)
Note right of Worker: Returns boolean indicating attachment found
Worker->>Cache: save_processed_emails()
else Email missing Message-ID
Note over Worker: Skip processing
end
end
Worker->>Cache: cleanup_old_entries()
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Actionable comments posted: 0
🧹 Nitpick comments (11)
app/tasks/imap_tasks.py (11)
16-17: Validate File-Storage Design
Storing processed emails in a local JSON file is a quick solution. However, be mindful of file write permissions and concurrency if multiple processes might write to this file simultaneously. Also consider environment setups where local storage may not be persistent.
20-29: Improve Error Handling
The function already handles JSON decoding errors, but file I/O exceptions (e.g.,IOError) are not currently caught. Consider a broader exception handling strategy to ensure the process isn't stalled by file access issues.
32-35: Handle Save Failures
Similar toload_processed_emails, this function doesn’t handle exceptions for file access orjson.dump. For robustness, wrapping in try-except could help prevent data loss or partial writes.
56-56: Consider Looping over Mailboxes
Listing mailbox #1 explicitly is fine, but if more mailboxes are added, consider iterating over them dynamically in a shared configuration list/dict to simplify future maintenance.
67-67: Reuse Mailbox Logic
Similar to mailbox #1, a loop or dictionary-based approach can reduce duplicated code.
96-104: Simplification & Potential Frequency
Removing polling intervals simplifies the logic but can increase polling frequency if called regularly. Ensure that repeated pulls don’t overwhelm the IMAP server or cause performance issues over time.
121-121: Potential Repeated Loads
Callingload_processed_emails()each time an inbox is pulled may be okay for small volumes. If the JSON grows large or there are many mailboxes, consider loading once, processing all, and then saving at the end for efficiency.
154-156: Skipping Messages WithoutMessage-ID
Skipping these emails might be correct for all typical cases, but if some valid messages lackMessage-ID, they will remain unprocessed. If that is not desired, consider generating a fallback ID (e.g., a hash of content).
163-165: Attachment-Only Processing
Currently you only callfetch_attachments_and_enqueue. If the email content is important (without attachments), consider whether you want to mark it processed as well.
205-205: Filtering on PDF Attachments
Processing only PDFs works if that’s the sole relevant format. If other file types become relevant, a quick extension or MIME type check can be added.
210-210: Temporary Directory Placement
Saving the attachment to theworkdirfirst is a common approach. Ensure this directory is secured and cleared if attachments might contain sensitive data.
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app/tasks/imap_tasks.py(5 hunks)
🔇 Additional comments (20)
app/tasks/imap_tasks.py (20)
4-4: No Issues with JSON Import
Importingjsonfrom the standard library is straightforward and appropriate for local caching.
38-45: ValidatestrptimeEdge Cases
If a date string in the JSON is invalid or malformed,datetime.strptimemay raise an exception. Consider wrapping parsing in a try-except or skipping improperly formatted entries to avoid breaking the cleanup process.
51-52: Clear Docstring
The revised docstring accurately reflects the new logic of checking all mailboxes. Nice clarification.
54-54: Startup Log
Logging at info level here is fine for verifying that the task has begun.
90-90: Helpful Docstring
"Check and pull new emails from a given mailbox" clarifies the function's purpose well.
95-95: Good Logging
Logging the mailbox being checked aids in troubleshooting and monitoring.
117-118: Updated Docstring
Indicating that only the last 7 days are fetched and that emails are not marked as read is straightforward and helpful for future maintainers.
132-134: Might Exclude Older Unread Emails
By restricting fetching to the last 7 days, older but unread or unprocessed emails remain unqueried. This could be intentional, but confirm that skipping older mail is acceptable.
142-142: Useful Summary
Logging the count of emails found helps gauge mailbox activity over the 7-day window.
152-152: Reliance onMessage-ID
GrabbingMessage-IDto uniquely track emails is sensible. Always confirm reliability ofMessage-IDfor the mail servers in use.
158-162: Efficient Duplication Check
Using the in-memoryprocessed_emailsdict to skip duplicates prevents reprocessing. Appropriately avoids repeated work.
166-170: Conditional Logging & Saving
Storing the email inprocessed_emailsonly if there’s an attachment is logical if that’s your main concern. Just reaffirm that non-attachment emails won't repeatedly appear in subsequent pulls.
171-174: Conditional Deletion
Deleting the original emails after processing attachments is a standard approach. Make sure end-users are aware that the source record is no longer in their mailbox once attachments have been extracted.
189-192: Returns a Boolean
Returning a boolean is a clean way to indicate whether attachments were found. This improves clarity when deciding whether to track an email as processed.
194-194: Attachment Flag Initialization
has_attachment = Falseis straightforward. No issues.
201-201: Skipping Container Parts
Skipping multipart container messages is correct to avoid confusion; only actual file parts should be processed.
203-203: No Filename
Skipping parts with no filename is typical. If there's a chance of inlined attachments lacking a filename, confirm you don't need those.
208-208: Settinghas_attachment
Markinghas_attachment = Trueupon finding a PDF is correct.
217-217: Asynchronous Upload
Usingupload_to_s3.delay(file_path)keeps the process from blocking. Good approach for concurrency.
220-220: Clear Return Value
Returninghas_attachmentelegantly signals whether or not to update the processed-emails cache.
Summary by CodeRabbit
New Features
Improvements