This repository was archived by the owner on Nov 29, 2023. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 1
Expand file tree
/
Copy pathstackops-agent.py
More file actions
348 lines (303 loc) · 10.7 KB
/
stackops-agent.py
File metadata and controls
348 lines (303 loc) · 10.7 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
# Copyright 2011 STACKOPS TECHNOLOGIES S.L.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
'''
Created on Feb 21, 2011
@author: Diego Parrilla
'''
import sys, json
import StringIO
import threading
import time
import os
import traceback
import urllib
import cgi
from twisted.internet import reactor, threads
from twisted.web import server, resource
from twisted.web.static import File
from twisted.python import log
from datetime import datetime
import StackOpssubs
import configuration
import utils
import status
#_target = 'installer.stackops.org'
_target = 'installer.qa.stackops.org/stackops'
_port = 8888
_status_file = '/etc/nova/CONFIG_STATUS'
def terminate():
time.sleep(10)
log.msg("Terminating install agent... good bye!")
utils.execute('stop stackops')
log.msg("You should not read this message after stopping the process!")
def importConfiguration(configurator, str):
strio = StringIO.StringIO()
strio.write(str)
strio.seek(0)
xml = StackOpssubs.parse(strio)
return configurator.importConfiguration(xml)
def _tail(f, n, offset=None):
"""Reads a n lines from f with an offset of offset lines. The return
value is a tuple in the form ``(lines, has_more)`` where `has_more` is
an indicator that is `True` if there are more lines in the file.
"""
avg_line_length = 74
to_read = n + (offset or 0)
while 1:
try:
f.seek(-(avg_line_length * to_read), 2)
except IOError:
f.seek(0)
pos = f.tell()
lines = f.read().splitlines()
if len(lines) >= to_read or pos == 0:
return lines[-to_read:offset and -offset or None],\
len(lines) > to_read or pos > 0
avg_line_length *= 1.3
def tail():
try:
f = open('/var/log/stackops/stackops-agent.py.log')
except Exception as e:
er = traceback.format_exc()
return "\n".join(er)
(log_content, llength) = _tail(f,1000)
f.close()
return "\n".join(log_content)
def showConfigDone():
str = '<html>'
str += '<head>'
str += '<title>Welcome to StackOps Smart Installer</title>'
str += '</head>'
str += '<body>'
str += 'Installation completed. Node ready. Please wait...<br/>'
str += '<script type="text/javascript">'
str += 'window.location = "http://' + _target + '/install/success"'
str += '</script>'
str += '</html>'
return str
def showError(txt):
str = '<html>'
str += '<head>'
str += '<title>ERROR!</title>'
str += '</head>'
str += '<body>'
str += '<div style="display:none">'
str += '<form name="errorform" id="errorform" action="http://' + _target + '/install/error" method="post" >'
str += '<textarea name="error" id="error">'
if txt is not None:
str += txt.replace("\n","<br />\n")
str += '</textarea>'
str += '<textarea name="log" id="log">'
str += _displayLog()
str += '</textarea>'
str += '</div>'
str += '</body>'
str += '<script type="text/javascript">'
str += 'document.errorform.submit();'
str += '</script>'
str += '</html>'
return str
def showLog():
str = '<html>'
str += '<head>'
str += '<title>Log file</title>'
str += '<META HTTP-EQUIV="refresh" CONTENT="30">'
str += '</head>'
str += '<script type="text/javascript">window.onload = function()'
str += ' { var pre0 = document.getElementsByTagName("pre")[0];'
str += ' window.scrollTo(0, pre0.offsetHeight); }; </script>'
str += '<body>'
str += '<pre style="line-height: 50%;"><font size="-1">'
str += _displayLog().replace("\n","<br />\n")
str += '</font></pre>'
str += '</body>'
str += '</html>'
return str
def _displayLog():
txt = tail()
str = ''
if txt is not None:
str += cgi.escape(txt)
return str
class ThreadedResource(resource.Resource):
def render_POST(self, request):
d = threads.deferToThread(self.POST, request)
d.addCallback(lambda s: (request.write(s), request.finish()))
return server.NOT_DONE_YET
def render_GET(self, request):
d = threads.deferToThread(self.GET, request)
d.addCallback(lambda s: (request.write(s), request.finish()))
return server.NOT_DONE_YET
#main server resource
class Root(ThreadedResource):
_configurator = configuration.OSConfigurator()
def GET(self, request):
xml = self._configurator.detectConfiguration()
output = StringIO.StringIO()
xml.export(output,0)
str = '<html>'
str += '<head>'
str += '<title>Welcome to StackOps Smart Installer</title>'
str += '</head>'
str += '<body>'
str += 'Redirecting to StackOps Smart Installer Assistant...<br/>'
str += '<div style="display:none">'
str += '<form name="autoform" id="autoform" action="http://' + _target + '/entrypoint" method="post" >'
str += '<textarea name="xml" id="xml">'
str += output.getvalue()
str += '</textarea>'
str += '<input type="text" name="nodeaddress" id="nodeaddress" value=""/>'
str += '</div>'
str += '</body>'
str += '<script type="text/javascript">'
str += 'document.getElementById("nodeaddress").value=document.location.href;'
str += 'document.autoform.submit();'
str += '</script>'
str += '</html>'
return str
def POST(self, request):
try:
if not os.path.exists('/etc/nova'):
request.setResponseCode(500)
return showError('/etc/nova config path does not exists')
with open(_status_file, 'w') as f:
f.write('CONFIGURING')
str = request.args['sysinfo'][0]
log.msg(str)
result = importConfiguration(self._configurator,str)
if len(result)==0:
with open(_status_file, 'w') as f:
f.write('READY')
return showConfigDone()
else:
os.remove(_status_file)
request.setResponseCode(500)
return showError(result)
except:
request.setHeader('content-type', 'text/html')
er = traceback.format_exc()
request.setResponseCode(500)
return showError(er)
def getChild(self, name, request):
if name == '':
return self
else:
if name in VIEWS.keys():
return resource.Resource.getChild(self, name, request)
else:
return PageNotFoundError()
class GetConfiguration(ThreadedResource):
_configurator = configuration.OSConfigurator()
def GET(self, request):
try:
log.msg('Request:')
xml = self._configurator.detectConfiguration()
output = StringIO.StringIO()
xml.export(output,0)
return output.getvalue()
except:
request.setHeader('content-type', 'text/html')
er = traceback.format_exc()
request.setResponseCode(500)
return showError(er)
def POST(self, request):
try:
with open(_status_file, 'w') as f:
f.write('CONFIGURING')
str = request.content.read()
log.msg(str)
result = importConfiguration(self._configurator,str)
if len(result)==0:
with open(_status_file, 'w') as f:
f.write('READY')
return showConfigDone()
else:
os.remove(_status_file)
request.setResponseCode(500)
return showError(result)
except:
request.setHeader('content-type', 'text/html')
er = traceback.format_exc()
request.setResponseCode(500)
return showError(er)
class GetTermination(ThreadedResource):
def GET(self, request):
try:
log.msg('Request: TERMINATION')
t = threading.Thread(target=terminate)
t.start()
return 'Installer agent will terminate in 10 seconds...'
except:
er = log.err()
request.setResponseCode(500)
return er
def POST(self, request):
self.render_GET(request)
class GetStatusAPI(ThreadedResource):
def GET(self, request):
request.setHeader('content-type', 'text/xml')
return status.get_xml_status()
class GetLog(ThreadedResource):
def _tail(self, f, n, offset=None):
"""Reads a n lines from f with an offset of offset lines. The return
value is a tuple in the form ``(lines, has_more)`` where `has_more` is
an indicator that is `True` if there are more lines in the file.
"""
avg_line_length = 74
to_read = n + (offset or 0)
while 1:
try:
f.seek(-(avg_line_length * to_read), 2)
except IOError:
# woops. apparently file is smaller than what we want
# to step back, go to the beginning instead
f.seek(0)
pos = f.tell()
lines = f.read().splitlines()
if len(lines) >= to_read or pos == 0:
return lines[-to_read:offset and -offset or None],\
len(lines) > to_read or pos > 0
avg_line_length *= 1.3
def GET(self, request):
request.setHeader('content-type', 'text/html')
return showLog()
class PageNotFoundError(ThreadedResource):
def GET(self, request):
return 'Page Not Found!'
#to make the process of adding new views less static
VIEWS = {
'configuration': GetConfiguration(),
'termination': GetTermination(),
'status': GetStatusAPI(),
'log': GetLog(),
}
if __name__ == '__main__':
s = len(sys.argv)
if (s==3) :
_port = int(sys.argv[1])
_target = sys.argv[2]
root = Root()
#add the views to the web service
for viewName, className in VIEWS.items():
root.putChild(viewName, className)
log.startLogging(sys.stdout)
log.msg('Starting server: %s' %str(datetime.now()))
site = server.Site(root)
reactor.listenTCP(_port, site)
try:
if 'CONFIGURING' in open(_status_file).read():
os.remove(_status_file)
except:
pass
reactor.run()