summaryrefslogtreecommitdiff
path: root/lib/chef/resource/deploy.rb
blob: 4252aa230f34965381c6bfbb22d27ff8f8eb846f (plain)
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
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
#
# Author:: Daniel DeLeo (<dan@kallistec.com>)
# Author:: Tyler Cloke (<tyler@opscode.com>)
# Copyright:: Copyright (c) 2008 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# 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.
#

# EX:
# deploy "/my/deploy/dir" do
#   repo "git@github.com/whoami/project"
#   revision "abc123" # or "HEAD" or "TAG_for_1.0" or (subversion) "1234"
#   user "deploy_ninja"
#   enable_submodules true
#   migrate true
#   migration_command "rake db:migrate"
#   environment "RAILS_ENV" => "production", "OTHER_ENV" => "foo"
#   shallow_clone true
#   action :deploy # or :rollback
#   restart_command "touch tmp/restart.txt"
#   git_ssh_wrapper "wrap-ssh4git.sh"
#   scm_provider Chef::Provider::Git # is the default, for svn: Chef::Provider::Subversion
#   svn_username "whoami"
#   svn_password "supersecret"
# end

require "chef/resource/scm"

class Chef
  class Resource

    # Deploy: Deploy apps from a source control repository.
    #
    # Callbacks:
    # Callbacks can be a block or a string. If given a block, the code
    # is evaluated as an embedded recipe, and run at the specified
    # point in the deploy process. If given a string, the string is taken as
    # a path to a callback file/recipe. Paths are evaluated relative to the
    # release directory. Callback files can contain chef code (resources, etc.)
    #
    class Deploy < Chef::Resource

      provider_base Chef::Provider::Deploy

      identity_attr :repository

      state_attrs :deploy_to, :revision

      def initialize(name, run_context=nil)
        super
        @resource_name = :deploy
        @deploy_to = name
        @environment = nil
        @repository_cache = 'cached-copy'
        @copy_exclude = []
        @purge_before_symlink = %w{log tmp/pids public/system}
        @create_dirs_before_symlink = %w{tmp public config}
        @symlink_before_migrate = {"config/database.yml" => "config/database.yml"}
        @symlinks = {"system" => "public/system", "pids" => "tmp/pids", "log" => "log"}
        @revision = 'HEAD'
        @action = :deploy
        @migrate = false
        @rollback_on_error = false
        @remote = "origin"
        @enable_submodules = false
        @shallow_clone = false
        @scm_provider = Chef::Provider::Git
        @svn_force_export = false
        @allowed_actions.push(:force_deploy, :deploy, :rollback)
        @additional_remotes = Hash[]
        @keep_releases = 5
        @enable_checkout = true
        @checkout_branch = "deploy"
      end

      # where the checked out/cloned code goes
      def destination
        @destination ||= shared_path + "/#{@repository_cache}"
      end

      # where shared stuff goes, i.e., logs, tmp, etc. goes here
      def shared_path
        @shared_path ||= @deploy_to + "/shared"
      end

      # where the deployed version of your code goes
      def current_path
        @current_path ||= @deploy_to + "/current"
      end

      def depth
        @shallow_clone ? "5" : nil
      end

      # note: deploy_to is your application "meta-root."
      def deploy_to(arg=nil)
        set_or_return(
          :deploy_to,
          arg,
          :kind_of => [ String ]
        )
      end

      def repo(arg=nil)
        set_or_return(
          :repo,
          arg,
          :kind_of => [ String ]
        )
      end
      alias :repository :repo

      def remote(arg=nil)
        set_or_return(
          :remote,
          arg,
          :kind_of => [ String ]
        )
      end

      def role(arg=nil)
        set_or_return(
          :role,
          arg,
          :kind_of => [ String ]
        )
      end

      def restart_command(arg=nil, &block)
        arg ||= block
        set_or_return(
          :restart_command,
          arg,
          :kind_of => [ String, Proc ]
        )
      end
      alias :restart :restart_command

      def migrate(arg=nil)
        set_or_return(
          :migrate,
          arg,
          :kind_of => [ TrueClass, FalseClass ]
        )
      end

      def migration_command(arg=nil)
        set_or_return(
          :migration_command,
          arg,
          :kind_of => [ String ]
        )
      end

      def rollback_on_error(arg=nil)
        set_or_return(
          :rollback_on_error,
          arg,
          :kind_of => [ TrueClass, FalseClass ]
        )
      end

      def user(arg=nil)
        set_or_return(
          :user,
          arg,
          :kind_of => [ String ]
        )
      end

      def group(arg=nil)
        set_or_return(
          :group,
          arg,
          :kind_of => [ String ]
        )
      end

      def enable_submodules(arg=nil)
        set_or_return(
          :enable_submodules,
          arg,
          :kind_of => [ TrueClass, FalseClass ]
        )
      end

      def shallow_clone(arg=nil)
        set_or_return(
          :shallow_clone,
          arg,
          :kind_of => [ TrueClass, FalseClass ]
        )
      end

      def repository_cache(arg=nil)
        set_or_return(
          :repository_cache,
          arg,
          :kind_of => [ String ]
        )
      end

      def copy_exclude(arg=nil)
        set_or_return(
          :copy_exclude,
          arg,
          :kind_of => [ String ]
        )
      end

      def revision(arg=nil)
        set_or_return(
          :revision,
          arg,
          :kind_of => [ String ]
        )
      end
      alias :branch :revision

      def git_ssh_wrapper(arg=nil)
        set_or_return(
          :git_ssh_wrapper,
          arg,
          :kind_of => [ String ]
        )
      end
      alias :ssh_wrapper :git_ssh_wrapper

      def svn_username(arg=nil)
        set_or_return(
          :svn_username,
          arg,
          :kind_of => [ String ]
        )
      end

      def svn_password(arg=nil)
        set_or_return(
          :svn_password,
          arg,
          :kind_of => [ String ]
        )
      end

      def svn_arguments(arg=nil)
        set_or_return(
          :svn_arguments,
          arg,
          :kind_of => [ String ]
        )
      end

      def svn_info_args(arg=nil)
        set_or_return(
          :svn_arguments,
          arg,
          :kind_of => [ String ])
      end

      def scm_provider(arg=nil)
        klass = if arg.kind_of?(String) || arg.kind_of?(Symbol)
                  lookup_provider_constant(arg)
                else
                  arg
                end
        set_or_return(
          :scm_provider,
          klass,
          :kind_of => [ Class ]
        )
      end

      def svn_force_export(arg=nil)
        set_or_return(
          :svn_force_export,
          arg,
          :kind_of => [ TrueClass, FalseClass ]
        )
      end

      def environment(arg=nil)
        if arg.is_a?(String)
          Chef::Log.debug "Setting RAILS_ENV, RACK_ENV, and MERB_ENV to `#{arg}'"
          Chef::Log.warn "[DEPRECATED] please modify your deploy recipe or attributes to set the environment using a hash"
          arg = {"RAILS_ENV"=>arg,"MERB_ENV"=>arg,"RACK_ENV"=>arg}
        end
        set_or_return(
          :environment,
          arg,
          :kind_of => [ Hash ]
        )
      end

       # The number of old release directories to keep around after cleanup
      def keep_releases(arg=nil)
        [set_or_return(
          :keep_releases,
          arg,
          :kind_of => [ Integer ]), 1].max
      end

      # An array of paths, relative to your app's root, to be purged from a
      # SCM clone/checkout before symlinking. Use this to get rid of files and
      # directories you want to be shared between releases.
      # Default: ["log", "tmp/pids", "public/system"]
      def purge_before_symlink(arg=nil)
        set_or_return(
          :purge_before_symlink,
          arg,
          :kind_of => Array
        )
      end

      # An array of paths, relative to your app's root, where you expect dirs to
      # exist before symlinking. This runs after #purge_before_symlink, so you
      # can use this to recreate dirs that you had previously purged.
      # For example, if you plan to use a shared directory for pids, and you
      # want it to be located in $APP_ROOT/tmp/pids, you could purge tmp,
      # then specify tmp here so that the tmp directory will exist when you
      # symlink the pids directory in to the current release.
      # Default: ["tmp", "public", "config"]
      def create_dirs_before_symlink(arg=nil)
        set_or_return(
          :create_dirs_before_symlink,
          arg,
          :kind_of => Array
        )
      end

      # A Hash of shared/dir/path => release/dir/path. This attribute determines
      # which files and dirs in the shared directory get symlinked to the current
      # release directory, and where they go. If you have a directory
      # $shared/pids that you would like to symlink as $current_release/tmp/pids
      # you specify it as "pids" => "tmp/pids"
      # Default {"system" => "public/system", "pids" => "tmp/pids", "log" => "log"}
      def symlinks(arg=nil)
        set_or_return(
          :symlinks,
          arg,
          :kind_of => Hash
        )
      end

      # A Hash of shared/dir/path => release/dir/path. This attribute determines
      # which files in the shared directory get symlinked to the current release
      # directory and where they go. Unlike map_shared_files, these are symlinked
      # *before* any migration is run.
      # For a rails/merb app, this is used to link in a known good database.yml
      # (with the production db password) before running migrate.
      # Default {"config/database.yml" => "config/database.yml"}
      def symlink_before_migrate(arg=nil)
        set_or_return(
          :symlink_before_migrate,
          arg,
          :kind_of => Hash
        )
      end

      # Callback fires before migration is run.
      def before_migrate(arg=nil, &block)
        arg ||= block
        set_or_return(:before_migrate, arg, :kind_of => [Proc, String])
      end

      # Callback fires before symlinking
      def before_symlink(arg=nil, &block)
        arg ||= block
        set_or_return(:before_symlink, arg, :kind_of => [Proc, String])
      end

      # Callback fires before restart
      def before_restart(arg=nil, &block)
        arg ||= block
        set_or_return(:before_restart, arg, :kind_of => [Proc, String])
      end

      # Callback fires after restart
      def after_restart(arg=nil, &block)
        arg ||= block
        set_or_return(:after_restart, arg, :kind_of => [Proc, String])
      end

      def additional_remotes(arg=nil)
        set_or_return(
          :additional_remotes,
          arg,
          :kind_of => Hash
        )
      end

      def enable_checkout(arg=nil)
        set_or_return(
          :enable_checkout,
          arg,
          :kind_of => [TrueClass, FalseClass]
        )
      end

      def checkout_branch(arg=nil)
        set_or_return(
          :checkout_branch,
          arg,
          :kind_of => String
        )
      end

      # FIXME The Deploy resource may be passed to an SCM provider as its
      # resource.  The SCM provider knows that SCM resources can specify a
      # timeout for SCM operations. The deploy resource must therefore support
      # a timeout method, but the timeout it describes is for SCM operations,
      # not the overall deployment. This is potentially confusing.
      def timeout(arg=nil)
        set_or_return(
          :timeout,
          arg,
          :kind_of => Integer
        )
      end

    end
  end
end