root / snf-astakos-app / astakos / im / management / commands / resource-modify.py @ 398a9604
History | View | Annotate | Download (5.7 kB)
1 |
# Copyright 2013 GRNET S.A. All rights reserved.
|
---|---|
2 |
#
|
3 |
# Redistribution and use in source and binary forms, with or
|
4 |
# without modification, are permitted provided that the following
|
5 |
# conditions are met:
|
6 |
#
|
7 |
# 1. Redistributions of source code must retain the above
|
8 |
# copyright notice, this list of conditions and the following
|
9 |
# disclaimer.
|
10 |
#
|
11 |
# 2. Redistributions in binary form must reproduce the above
|
12 |
# copyright notice, this list of conditions and the following
|
13 |
# disclaimer in the documentation and/or other materials
|
14 |
# provided with the distribution.
|
15 |
#
|
16 |
# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
|
17 |
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
18 |
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
19 |
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
|
20 |
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
21 |
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
22 |
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
23 |
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
24 |
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
25 |
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
26 |
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
27 |
# POSSIBILITY OF SUCH DAMAGE.
|
28 |
#
|
29 |
# The views and conclusions contained in the software and
|
30 |
# documentation are those of the authors and should not be
|
31 |
# interpreted as representing official policies, either expressed
|
32 |
# or implied, of GRNET S.A.
|
33 |
|
34 |
from optparse import make_option |
35 |
from django.core.management.base import BaseCommand, CommandError |
36 |
from django.utils import simplejson as json |
37 |
|
38 |
from astakos.im.models import Resource |
39 |
from astakos.im.resources import update_resource |
40 |
|
41 |
|
42 |
class Command(BaseCommand): |
43 |
args = "<resource name>"
|
44 |
help = ("Modify a resource (currently only change the default base quota)."
|
45 |
"\nIf no resource is specified, all resources are considered.")
|
46 |
|
47 |
option_list = BaseCommand.option_list + ( |
48 |
make_option('--limit',
|
49 |
dest='limit',
|
50 |
help="Specify default base quota"),
|
51 |
make_option('--interactive',
|
52 |
action='store_true',
|
53 |
dest='interactive',
|
54 |
default=None,
|
55 |
help="Prompt user to change default base quotas"),
|
56 |
make_option('--from-file',
|
57 |
dest='from_file',
|
58 |
metavar='<limits_file.json>',
|
59 |
help="Read default base quotas from a json file"),
|
60 |
) |
61 |
|
62 |
def handle(self, *args, **options): |
63 |
resource_name = args[0] if len(args) > 0 else None |
64 |
|
65 |
actions = { |
66 |
'limit': self.change_limit, |
67 |
'interactive': self.change_interactive, |
68 |
'from_file': self.change_from_file, |
69 |
} |
70 |
|
71 |
opts = [(key, value) |
72 |
for (key, value) in options.items() |
73 |
if key in actions and value is not None] |
74 |
|
75 |
if len(opts) != 1: |
76 |
raise CommandError("Please provide exactly one option.") |
77 |
|
78 |
key, value = opts[0]
|
79 |
action = actions[key] |
80 |
action(resource_name, value) |
81 |
|
82 |
def get_resource(self, resource_name): |
83 |
try:
|
84 |
return Resource.objects.get_for_update(name=resource_name)
|
85 |
except Resource.DoesNotExist:
|
86 |
raise CommandError("Resource %s does not exist." |
87 |
% resource_name) |
88 |
|
89 |
def change_limit(self, resource_name, limit): |
90 |
if resource_name is None: |
91 |
raise CommandError("Please provide a resource name.") |
92 |
|
93 |
resource = self.get_resource(resource_name)
|
94 |
self.change_resource_limit(resource, limit)
|
95 |
|
96 |
def change_from_file(self, resource_name, filename): |
97 |
with open(filename) as file_data: |
98 |
try:
|
99 |
config = json.load(file_data) |
100 |
except json.JSONDecodeError:
|
101 |
raise CommandError("Malformed JSON file.") |
102 |
if not isinstance(config, dict): |
103 |
raise CommandError("Malformed JSON file.") |
104 |
self.change_with_conf(resource_name, config)
|
105 |
|
106 |
def change_with_conf(self, resource_name, config): |
107 |
if resource_name is None: |
108 |
resources = Resource.objects.all().select_for_update() |
109 |
else:
|
110 |
resources = [self.get_resource(resource_name)]
|
111 |
|
112 |
for resource in resources: |
113 |
limit = config.get(resource.name) |
114 |
if limit is not None: |
115 |
self.change_resource_limit(resource, limit)
|
116 |
|
117 |
def change_interactive(self, resource_name, _placeholder): |
118 |
if resource_name is None: |
119 |
resources = Resource.objects.all().select_for_update() |
120 |
else:
|
121 |
resources = [self.get_resource(resource_name)]
|
122 |
|
123 |
for resource in resources: |
124 |
self.stdout.write("Resource '%s' (%s)\n" % |
125 |
(resource.name, resource.desc)) |
126 |
unit = (" in %s" % resource.unit) if resource.unit else "" |
127 |
self.stdout.write("Current limit%s: %s\n" |
128 |
% (unit, resource.uplimit)) |
129 |
while True: |
130 |
self.stdout.write("New limit%s (leave blank to keep current): " |
131 |
% (unit)) |
132 |
response = raw_input()
|
133 |
if response == "": |
134 |
break
|
135 |
else:
|
136 |
try:
|
137 |
value = int(response)
|
138 |
except ValueError: |
139 |
continue
|
140 |
update_resource(resource, value) |
141 |
break
|
142 |
|
143 |
def change_resource_limit(self, resource, limit): |
144 |
try:
|
145 |
limit = int(limit)
|
146 |
except:
|
147 |
raise CommandError("Limit should be an integer.") |
148 |
update_resource(resource, limit) |