pgadmin4/web/pgadmin/misc/bgprocess/__init__.py
2017-06-13 09:18:48 +05:30

110 lines
2.8 KiB
Python

##########################################################################
#
# pgAdmin 4 - PostgreSQL Tools
#
# Copyright (C) 2013 - 2017, The pgAdmin Development Team
# This software is released under the PostgreSQL Licence
#
##########################################################################
"""
A blueprint module providing utility functions for the notify the user about
the long running background-processes.
"""
from flask import url_for
from flask_security import login_required
from pgadmin.utils import PgAdminModule
from pgadmin.utils.ajax import make_response, gone, success_return
from .processes import BatchProcess
MODULE_NAME = 'bgprocess'
class BGProcessModule(PgAdminModule):
def get_own_javascripts(self):
return [{
'name': 'pgadmin.browser.bgprocess',
'path': url_for('bgprocess.static', filename='js/bgprocess'),
'when': None
}]
def get_own_stylesheets(self):
"""
Returns:
list: the stylesheets used by this module.
"""
stylesheets = [
url_for('bgprocess.static', filename='css/bgprocess.css')
]
return stylesheets
def get_exposed_url_endpoints(self):
"""
Returns:
list: URL endpoints for bgprocess
"""
return [
'bgprocess.status', 'bgprocess.detailed_status',
'bgprocess.acknowledge', 'bgprocess.list'
]
# Initialise the module
blueprint = BGProcessModule(
MODULE_NAME, __name__, url_prefix='/misc/bgprocess'
)
@blueprint.route('/', methods=['GET'], endpoint='list')
@login_required
def index():
return make_response(response=BatchProcess.list())
@blueprint.route('/<pid>', methods=['GET'], endpoint='status')
@blueprint.route(
'/<pid>/<int:out>/<int:err>/', methods=['GET'], endpoint='detailed_status'
)
@login_required
def status(pid, out=-1, err=-1):
"""
Check the status of the process running in background.
Sends back the output of stdout/stderr
Fetches & sends STDOUT/STDERR logs for the process requested by client
Args:
pid: Process ID
out: position of the last stdout fetched
err: position of the last stderr fetched
Returns:
Status of the process and logs (if out, and err not equal to -1)
"""
try:
process = BatchProcess(id=pid)
return make_response(response=process.status(out, err))
except LookupError as lerr:
return gone(errormsg=str(lerr))
@blueprint.route('/<pid>', methods=['PUT'], endpoint='acknowledge')
@login_required
def acknowledge(pid):
"""
User has acknowledge the process
Args:
pid: Process ID
Returns:
Positive status
"""
try:
BatchProcess.acknowledge(pid)
return success_return()
except LookupError as lerr:
return gone(errormsg=str(lerr))