99 lines
3.8 KiB
Python
99 lines
3.8 KiB
Python
import tempfile
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import cdist
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from cdist.integration import configure_hosts_simple
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from celery.result import AsyncResult
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from celery import current_task
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from celery.utils.log import get_task_logger
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from django.conf import settings
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from django.core.mail import EmailMessage
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from dynamicweb.celery import app
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logger = get_task_logger(__name__)
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@app.task(bind=True, max_retries=settings.CELERY_MAX_RETRIES)
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def send_plain_email_task(self, email_data):
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"""
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This is a generic celery task to be used for sending emails.
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A celery wrapper task for EmailMessage
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:param self:
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:param email_data: A dict of all needed email headers
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:return:
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"""
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email = EmailMessage(**email_data)
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email.send()
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@app.task(bind=True, max_retries=settings.CELERY_MAX_RETRIES)
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def save_ssh_key(self, hosts, keys):
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"""
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Saves ssh key into the VMs of a user using cdist
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:param hosts: A list of hosts to be configured
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:param keys: A list of keys to be added. A key should be dict of the
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form {
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'value': 'sha-.....', # public key as string
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'state': True # whether key is to be added or
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} # removed
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"""
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logger.debug(
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"Running save_ssh_key on {}".format(current_task.request.hostname))
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logger.debug("""Running save_ssh_key task for
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Hosts: {hosts_str}
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Keys: {keys_str}""".format(hosts_str=", ".join(hosts),
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keys_str=", ".join([
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"{value}->{state}".format(
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value=key.get('value'),
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state=str(
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key.get('state')))
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for key in keys]))
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)
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return_value = True
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with tempfile.NamedTemporaryFile(delete=True) as tmp_manifest:
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# Generate manifest to be used for configuring the hosts
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lines_list = [
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' --key "{key}" --state {state} \\\n'.format(
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key=key['value'],
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state='present' if key['state'] else 'absent'
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).encode('utf-8')
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for key in keys]
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lines_list.insert(0, b'__ssh_authorized_keys root \\\n')
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tmp_manifest.writelines(lines_list)
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tmp_manifest.flush()
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try:
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configure_hosts_simple(hosts,
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tmp_manifest.name,
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verbose=cdist.argparse.VERBOSE_TRACE)
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except Exception as cdist_exception:
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logger.error(cdist_exception)
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return_value = False
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email_data = {
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'subject': "celery save_ssh_key error - task id {0}".format(
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self.request.id.__str__()),
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'from_email': current_task.request.hostname,
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'to': settings.DCL_ERROR_EMAILS_TO_LIST,
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'body': "Task Id: {0}\nResult: {1}\nTraceback: {2}".format(
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self.request.id.__str__(), False, str(cdist_exception)),
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}
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send_plain_email_task(email_data)
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return return_value
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@app.task
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def save_ssh_key_error_handler(uuid):
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result = AsyncResult(uuid)
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exc = result.get(propagate=False)
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logger.error('Task {0} raised exception: {1!r}\n{2!r}'.format(
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uuid, exc, result.traceback))
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email_data = {
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'subject': "[celery error] Save SSH key error {0}".format(uuid),
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'from_email': current_task.request.hostname,
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'to': settings.DCL_ERROR_EMAILS_TO_LIST,
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'body': "Task Id: {0}\nResult: {1}\nTraceback: {2}".format(
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uuid, exc, result.traceback),
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}
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send_plain_email_task(email_data)
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