microblog.pub/tasks.py

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import json
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import logging
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import os
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import random
import requests
from celery import Celery
from requests.exceptions import HTTPError
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from config import DB
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from config import HEADERS
from config import KEY
from config import USER_AGENT
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from little_boxes.httpsig import HTTPSigAuth
from little_boxes.linked_data_sig import generate_signature
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from utils.opengraph import fetch_og_metadata
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log = logging.getLogger(__name__)
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app = Celery(
"tasks", broker=os.getenv("MICROBLOGPUB_AMQP_BROKER", "pyamqp://guest@localhost//")
)
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SigAuth = HTTPSigAuth(KEY)
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@app.task(bind=True, max_retries=12)
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def post_to_inbox(self, payload: str, to: str) -> None:
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try:
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log.info("payload=%s", payload)
log.info("generating sig")
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signed_payload = json.loads(payload)
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generate_signature(signed_payload, KEY)
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log.info("to=%s", to)
resp = requests.post(
to,
data=json.dumps(signed_payload),
auth=SigAuth,
headers={
"Content-Type": HEADERS[1],
"Accept": HEADERS[1],
"User-Agent": USER_AGENT,
},
)
log.info("resp=%s", resp)
log.info("resp_body=%s", resp.text)
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resp.raise_for_status()
except HTTPError as err:
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log.exception("request failed")
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if 400 >= err.response.status_code >= 499:
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log.info("client error, no retry")
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return
self.retry(exc=err, countdown=int(random.uniform(2, 4) ** self.request.retries))
@app.task(bind=True, max_retries=12)
def fetch_og(self, col, remote_id):
try:
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log.info("fetch_og_meta remote_id=%s col=%s", remote_id, col)
if col == "INBOX":
log.info(
"%d links saved", fetch_og_metadata(USER_AGENT, DB.inbox, remote_id)
)
elif col == "OUTBOX":
log.info(
"%d links saved", fetch_og_metadata(USER_AGENT, DB.outbox, remote_id)
)
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except Exception as err:
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self.log.exception("failed")
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self.retry(exc=err, countdown=int(random.uniform(2, 4) ** self.request.retries))