To get this branch, use:
bzr branch
http://bzr.ed.am/stdhome
« back to all changes in this revision
Viewing changes to lib/stdhome/deployment.py
- browse files at revision 70
- compare with another revision
- download diff
- download tarball
- view history from revision 70
- Committer: Tim Marston
- Date: 2016-04-10 20:16:16 UTC
- Revision ID: tim@ed.am-20160410201616-xyd9aeyc7xf6tqg5
fixed tools to use ~/tmp/stdhome-dev as dev home-dir
- files added:
- lib/stdhome/command
- lib/stdhome/vcs
- lib/stdhome/walker
- tools
- files renamed:
- version => VERSION
- lib/stdhome/command_init.py => lib/stdhome/command/init.py
- lib/stdhome/stdhome.py => lib/stdhome/program.py
- files modified:
- .bzrignore
added
removed
lib/stdhome/deployment.py
1
# deployment.py
2
#
3
# Copyright (C) 2013 to 2014 Tim Marston <tim@edm.am>
4
#
5
# This file is part of stdhome (hereafter referred to as "this program").
6
# See http://ed.am/dev/stdhome for more information.
7
#
8
# This program is free software: you can redistribute it and/or modify
9
# it under the terms of the GNU General Public License as published by
10
# the Free Software Foundation, either version 3 of the License, or
11
# (at your option) any later version.
12
#
13
# This program is distributed in the hope that it will be useful,
14
# but WITHOUT ANY WARRANTY; without even the implied warranty of
15
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16
# GNU General Public License for more details.
17
#
18
# You should have received a copy of the GNU General Public License
19
# along with this program. If not, see <http://www.gnu.org/licenses/>.
20
21
22
import os, re, shutil, filecmp, json
23
import the, util
24
from walker.copy_in import CopyInWalker
25
from walker.conflict import ConflictWalker
26
from walker.copy_out import CopyOutWalker
27
28
29
class Deployment:
30
31
32
def __init__( self ):
33
if the.repo is None:
34
raise RuntimeError( 'logic error: Deployment initialised when '
35
'the.repo is unset' )
36
self.load_deployment_state()
37
self.conflicts_checked = False
38
39
40
def load_deployment_state( self ):
41
"""Load any deployment state. If one is found then a deployment will be
42
considered to be ongoing.
43
"""
44
45
# list of files that were copied-in (or at least given the opportunity
46
# to be) and updated through the vcs update. This means that, while
47
# there may have been conflicts during the update (which the user will
48
# have to have dealt with in the repo), any conflicts arising with these
49
# files in the home directory are no longer important and can be
50
# ignored. In short, this is a list of files that can safely be
51
# deployed, regardless of the state of the home directory.
52
self.imported_files = None
53
54
# list of files that were affected by a recent vcs update (so only these
55
# files need to be checked for deployment conflicts or copied-out)
56
self.affected_files = None
57
58
# the revno that the repo was as prior to a recent update
59
self.initial_revno = None
60
61
# do we have a repo?
62
if not os.path.exists( the.repo.full_dir ): return
63
64
# if no file list exists, we're done
65
file = os.path.join( the.full_mddir, "deploy.%s" % the.repo.name )
66
if not os.path.isfile( file ):
67
return
68
69
# read the file list
70
if the.verbose >= 1: print "deployment state found; loading"
71
f = open( file, 'r' )
72
state = json.loads( f.read() )
73
74
# unpack deployment state
75
if 'imported_files' in state:
76
self.imported_files = state['imported_files'];
77
if 'initial_revno' in state:
78
self.initial_revno = state['initial_revno'];
79
if 'affected_files' in state:
80
self.affected_files = state['affected_files'];
81
82
83
def save_deployment_state( self ):
84
"""Save the current deployment state (so there will be a deployment ongoing).
85
"""
86
87
if the.verbose >= 1: print "saving deployment state"
88
89
# create metadata directory, as necessary
90
if not os.path.isdir( the.full_mddir ):
91
os.mkdir( the.full_mddir )
92
93
# pack deployment state
94
state = {
95
'imported_files': self.imported_files,
96
'initial_revno': self.initial_revno,
97
'affected_files': self.affected_files,
98
}
99
100
# create file
101
file = os.path.join( the.full_mddir, "deploy.%s" % the.repo.name )
102
f = open( file, 'w' )
103
f.write( json.dumps( state ) );
104
105
106
def remove_deployment_state( self ):
107
"""Remove the current deployment state (so no deployment will be ongoing).
108
"""
109
110
# check it exists
111
file = os.path.join( the.full_mddir, "deploy.%s" % the.repo.name )
112
if( os.path.isfile( file ) ):
113
114
# delete it
115
if the.verbose >= 1: print "removing deployment state"
116
os.unlink( file )
117
118
119
def is_ongoing( self ):
120
"""Is there a deployment currently ongoing?
121
"""
122
123
return False if self.imported_files is None else True
124
125
126
def check_ongoing( self, ongoing = True ):
127
"""Check that a deployment either is or is not ongoing and raise an error if
128
not.
129
"""
130
131
if( ongoing ):
132
if self.imported_files is None:
133
raise self.DeploymentOngoing( False )
134
else:
135
if self.imported_files is not None:
136
raise self.DeploymentOngoing( True )
137
138
139
def get_initial_revno( self ):
140
"""Get the initial revision identifier from the deployment state.
141
"""
142
143
return self.initial_revno
144
145
146
def copy_in( self, initial_revno = None ):
147
"""Copy-in changes from the home directory to the repository. When finished,
148
the state of deployment is saved, meaning that a deployment is ongoing.
149
"""
150
151
# check we don't already have a file list
152
self.check_ongoing( False )
153
154
# if the repo doesn't exist, we have an empty file list
155
if not os.path.exists( the.repo.full_dir ):
156
self.imported_files = list()
157
else:
158
# copy in
159
if the.verbose >= 1: print "importing files..."
160
walker = CopyInWalker()
161
walker.walk()
162
self.imported_files = walker.walk_list
163
164
# obtain initial revno
165
self.initial_revno = the.repo.vcs.get_revno()
166
167
# save state
168
self.save_deployment_state()
169
170
171
def get_conflicts( self, affected_files = None ):
172
"""Check to see if there are any deployment conflicts. If a list of affected
173
files is supplied, then only those files are checked (and they are also
174
saved with the deployment state). Otherwise, all files in the
175
repository are checked.
176
"""
177
178
# check we have a file list
179
self.check_ongoing( True )
180
181
# set updated files
182
if affected_files is not None:
183
self.affected_files = affected_files
184
self.save_deployment_state()
185
186
# check for deployment conflicts
187
walker = ConflictWalker( self.imported_files, self.affected_files )
188
walker.walk()
189
190
self.conflicts_checked = True
191
return walker.changed + walker.obstructed
192
193
194
def copy_out( self, quiet ):
195
"""Copy-out changed files from the repository to the home directory. If the
196
deployment state includes a list of affected files, then only those
197
files are copied-out.
198
"""
199
200
# check we have a file list
201
self.check_ongoing( True )
202
203
# check that deployment conflicts have been checked-for
204
if not self.conflicts_checked:
205
raise RuntimeError('logic error: deployment conflicts unchecked' )
206
207
# copy out
208
if the.verbose >= 1: print "exporting files..."
209
walker = CopyOutWalker( self.affected_files, quiet )
210
walker.walk()
211
212
# clear state
213
self.remove_deployment_state()
214
215
216
class DeploymentOngoing( the.program.FatalError ):
217
218
def __init__( self, ongoing ):
219
if( ongoing ):
220
self.msg = "there is an ongoing deployment"
221
else:
222
self.msg = "there is no ongoing deployment"
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0