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git://git.yoctoproject.org/layerindex-web.git
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74b1b9c895
We were refreshing the page constantly in order to show output while a task was running, which basically worked but is horrible. Instead, write the task output to a file and then use AJAX calls to request whatever output has been written to the file since the last call and call this roughly every second. Put the output in a scrollable <pre> element instead of making it the length of the page, and auto-scroll to the end (unless the user grabs the scrollbar and pulls it upwards - it may not be immediately obvious that you can do this if there is a lot of output since you have to pull it up when the scrolling animation is not running, but it is possible). An alternative would be to have used some kind of long-lived HTTP session or a websocket, but those come with their own set of problems so I elected to use this much simpler method. Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
# Celery task definitions for the layer index app
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#
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# Copyright (C) 2018 Intel Corporation
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# Author: Paul Eggleton <paul.eggleton@linux.intel.com>
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#
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# Licensed under the MIT license, see COPYING.MIT for details
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from celery import Celery
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from django.core.mail import EmailMessage
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from . import utils
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import os
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import time
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import subprocess
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from datetime import datetime
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try:
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import settings
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except ImportError:
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# not in a full django env, so settings is inaccessible.
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# setup django to access settings.
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utils.setup_django()
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import settings
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tasks = Celery('layerindex',
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broker=settings.RABBIT_BROKER,
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backend=settings.RABBIT_BACKEND)
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@tasks.task
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def send_email(subject, text_content, from_email=settings.DEFAULT_FROM_EMAIL, to_emails=[]):
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# We seem to need to run this within the task
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utils.setup_django()
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msg = EmailMessage(subject, text_content, from_email, to_emails)
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msg.send()
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@tasks.task(bind=True)
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def run_update_command(self, branch_name, update_command):
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utils.setup_django()
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from layerindex.models import Update
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updateobj = Update.objects.get(task_id=self.request.id)
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updateobj.started = datetime.now()
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updateobj.save()
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output = ''
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update_command = update_command.replace('%update%', str(updateobj.id))
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update_command = update_command.replace('%branch%', branch_name)
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try:
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os.makedirs(settings.TASK_LOG_DIR)
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except FileExistsError:
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pass
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logfile = os.path.join(settings.TASK_LOG_DIR, 'task_%s.log' % str(self.request.id))
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try:
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output = utils.runcmd(update_command, os.path.dirname(os.path.dirname(__file__)), outfile=logfile)
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except subprocess.CalledProcessError as e:
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output = e.output
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except Exception as e:
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output = str(e)
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finally:
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updateobj.log = output
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updateobj.finished = datetime.now()
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updateobj.save()
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