58988fc3e3
The freezer scheduler is to be executed
as daemon process on the client machines
It has the following responsibilities:
* when using the api:
- register -if necessary- as a client in the api
- download the list of jobs from the api
- schedule the jobs for execution
- launch the freezer client at the scheduled time
- collect metadata and exit codes and upload them to the api
- periodically poll the api for new/updated jobs
- if a job is part of a session (a coordinated group of jobs)
it updates the session status when job starts/stops
* when not using the api
- load jobs configurations from files
- schedule the jobs for execution
- launch the freezer client at the scheduled time
The freezer scheduler can also be used to manage jobs
and sessions using the following positional parameters:
job-list
job-get
job-create
job-delete
job-start
job-stop
session-list
session-get
session-create
session-delete
session-list-job
session-add-job
session-remove-job
or to register the client in the api using the positional parameter:
register
Implements blueprint: freezer-scheduler-start
Change-Id: I06ae202a0f464f7240c137744a5b54d1177cabd9
75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
"""
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Copyright 2014 Hewlett-Packard
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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This product includes cryptographic software written by Eric Young
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(eay@cryptsoft.com). This product includes software written by Tim
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Hudson (tjh@cryptsoft.com).
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========================================================================
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"""
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import json
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class ApiClientException(Exception):
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@staticmethod
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def get_message_from_api_response(r):
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"""
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returns a message based on information from a api-formatted response
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if available, otherwise None
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api-formatted response should be:
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{
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title: "error title string",
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description: "error description string"
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}
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:param r: response object
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:return: string with error message or None if it fails
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"""
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try:
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body = json.loads(r.text)
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message = "[*] Error {0}: {1}".format(
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r.status_code,
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body['description'])
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except:
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message = None
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return message
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@staticmethod
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def get_message_from_response(r):
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"""
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composes the error message using information eventually present
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in the response (http error code and the http response body)
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:param r: response object
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:return: string with error message or None if it fails
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"""
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try:
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message = "[*] Error {0}: {1}".format(
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r.status_code,
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r.text)
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except:
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message = None
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return message
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def __init__(self, r):
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message = self.get_message_from_api_response(r) or \
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self.get_message_from_response(r) or \
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str(r)
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try:
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self.status_code = r.status_code
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except:
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self.status_code = None
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super(ApiClientException, self).__init__(message)
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