Christian Krakau-Louis
132 lines
4.5 KiB
Python
132 lines
4.5 KiB
Python
#!/usr/bin/env python3
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import os
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import json
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import time
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import requests
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import logging
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from typing import Dict, Any
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from app.config import settings
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from app.tasks.retry_config import BaseTaskWithRetry
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from app.celery_app import celery
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logger = logging.getLogger(__name__)
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POLL_MAX_ATTEMPTS = 10
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POLL_INTERVAL_SEC = 3
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def _get_headers():
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"""Returns HTTP headers for Paperless-ngx API calls."""
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return {
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"Authorization": f"Token {settings.paperless_ngx_api_token}"
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}
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def _paperless_api_url(path: str) -> str:
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"""
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Constructs a full Paperless-ngx API URL using `settings.paperless_host`.
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Ensures the path is appended with a leading slash if missing.
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"""
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host = settings.paperless_host.rstrip("/")
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if not path.startswith("/"):
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path = "/" + path
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return f"{host}{path}"
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def poll_task_for_document_id(task_id: str) -> int:
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"""
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Polls /api/tasks/?task_id=<uuid> until we get status=SUCCESS or FAILURE,
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or until we run out of attempts.
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On SUCCESS: returns the int document_id from 'related_document'.
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On FAILURE: raises RuntimeError with the task's 'result' message.
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If times out, raises TimeoutError.
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"""
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url = _paperless_api_url("/api/tasks/")
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attempts = 0
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while attempts < POLL_MAX_ATTEMPTS:
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try:
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resp = requests.get(url, headers=_get_headers(), params={"task_id": task_id})
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resp.raise_for_status()
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tasks_data = resp.json()
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except requests.exceptions.RequestException as exc:
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logger.warning(
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"Failed to poll for task_id='%s'. Attempt=%d Error=%s",
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task_id, attempts + 1, exc
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)
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time.sleep(POLL_INTERVAL_SEC)
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attempts += 1
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continue
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if isinstance(tasks_data, dict) and "results" in tasks_data:
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tasks_data = tasks_data["results"]
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if tasks_data:
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task_info = tasks_data[0]
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status = task_info.get("status")
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if status == "SUCCESS":
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doc_str = task_info.get("related_document")
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if doc_str:
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return int(doc_str)
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raise RuntimeError(
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f"Task {task_id} completed but no doc ID found. Task info: {task_info}"
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)
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elif status == "FAILURE":
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raise RuntimeError(f"Task {task_id} failed: {task_info.get('result')}")
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attempts += 1
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time.sleep(POLL_INTERVAL_SEC)
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raise TimeoutError(
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f"Task {task_id} didn't reach SUCCESS within {POLL_MAX_ATTEMPTS} attempts."
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)
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@celery.task(base=BaseTaskWithRetry)
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def upload_to_paperless(file_path: str):
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"""Uploads a file to Paperless-ngx."""
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if not os.path.exists(file_path):
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raise FileNotFoundError(f"File not found: {file_path}")
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# Extract filename
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filename = os.path.basename(file_path)
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# Check if Paperless settings are configured
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if not settings.paperless_host or not settings.paperless_ngx_api_token:
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error_msg = "Paperless-ngx credentials are not fully configured"
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logger.error(error_msg)
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raise ValueError(error_msg)
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# Upload the PDF
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post_url = _paperless_api_url("/api/documents/post_document/")
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with open(file_path, "rb") as f:
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files = {
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"document": (filename, f, "application/pdf"),
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}
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data = {"title": filename} # Title = Filename (no additional metadata)
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try:
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logger.debug("Posting document to Paperless: file=%s", filename)
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resp = requests.post(post_url, headers=_get_headers(), files=files, data=data)
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resp.raise_for_status()
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except requests.exceptions.RequestException as exc:
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logger.error(
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"Failed to upload document '%s' to Paperless. Error: %s. Response=%s",
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file_path, exc, getattr(exc.response, "text", "<no response>")
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)
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raise
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raw_task_id = resp.text.strip().strip('"').strip("'")
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logger.info(f"Received Paperless task ID: {raw_task_id}")
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# Poll tasks until success/fail => get doc_id
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doc_id = poll_task_for_document_id(raw_task_id)
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logger.info(f"Document {file_path} successfully ingested => ID={doc_id}")
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return {
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"status": "Completed",
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"paperless_task_id": raw_task_id,
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"paperless_document_id": doc_id,
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"file_path": file_path
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}
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