Class: Kamal::Cli::App

Inherits:
Base
  • Object
show all
Defined in:
lib/kamal/cli/app.rb

Defined Under Namespace

Classes: Boot, PrepareAssets

Instance Method Summary collapse

Methods inherited from Base

dynamic_command_class, exit_on_failure?, #initialize

Constructor Details

This class inherits a constructor from Kamal::Cli::Base

Instance Method Details

#boot ⇒ Object 



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
 
# File 'lib/kamal/cli/app.rb', line 3

def boot
  with_lock do
    say "Get most recent version available as an image...", :magenta unless options[:version]
    using_version(version_or_latest) do |version|
      say "Start container with version #{version} (or reboot if already running)...", :magenta

      # Assets are prepared in a separate step to ensure they are on all hosts before booting
      on(KAMAL.hosts) do
        KAMAL.roles_on(host).each do |role|
          Kamal::Cli::App::PrepareAssets.new(host, role, self).run
        end
      end

      # Primary hosts and roles are returned first, so they can open the barrier
      barrier = Kamal::Cli::Healthcheck::Barrier.new

      host_boot_groups.each do |hosts|
        host_list = Array(hosts).join(",")
        run_hook "pre-app-boot", hosts: host_list

        on(hosts) do |host|
          KAMAL.roles_on(host).each do |role|
            Kamal::Cli::App::Boot.new(host, role, self, version, barrier).run
          end
        end

        run_hook "post-app-boot", hosts: host_list
        sleep KAMAL.config.boot.wait if KAMAL.config.boot.wait
      end

      # Tag once the app booted on all hosts
      on(KAMAL.hosts) do |host|
        execute *KAMAL.auditor.record("Tagging #{KAMAL.config.absolute_image} as the latest image"), verbosity: :debug
        execute *KAMAL.app.tag_latest_image
      end
    end
  end
end

#containers ⇒ Object 



163
164
165
 
# File 'lib/kamal/cli/app.rb', line 163

def containers
  on(KAMAL.hosts) { |host| puts_by_host host, capture_with_info(*KAMAL.app.list_containers) }
end

#details ⇒ Object 



91
92
93
94
95
96
97
98
99
 
# File 'lib/kamal/cli/app.rb', line 91

def details
  on(KAMAL.hosts) do |host|
    roles = KAMAL.roles_on(host)

    roles.each do |role|
      puts_by_host host, capture_with_info(*KAMAL.app(role: role, host: host).info)
    end
  end
end

#exec(*cmd) ⇒ Object 



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
 
# File 'lib/kamal/cli/app.rb', line 106

def exec(*cmd)
  if (incompatible_options = [ :interactive, :reuse ].select { |key| options[:detach] && options[key] }.presence)
    raise ArgumentError, "Detach is not compatible with #{incompatible_options.join(" or ")}"
  end

  cmd = Kamal::Utils.join_commands(cmd)
  env = options[:env]
  detach = options[:detach]
  case
  when options[:interactive] && options[:reuse]
    say "Get current version of running container...", :magenta unless options[:version]
    using_version(options[:version] || current_running_version) do |version|
      say "Launching interactive command with version #{version} via SSH from existing container on #{KAMAL.primary_host}...", :magenta
      run_locally { exec KAMAL.app(role: KAMAL.primary_role, host: KAMAL.primary_host).execute_in_existing_container_over_ssh(cmd, env: env) }
    end

  when options[:interactive]
    say "Get most recent version available as an image...", :magenta unless options[:version]
    using_version(version_or_latest) do |version|
      say "Launching interactive command with version #{version} via SSH from new container on #{KAMAL.primary_host}...", :magenta
      run_locally do
        exec KAMAL.app(role: KAMAL.primary_role, host: KAMAL.primary_host).execute_in_new_container_over_ssh(cmd, env: env)
      end
    end

  when options[:reuse]
    say "Get current version of running container...", :magenta unless options[:version]
    using_version(options[:version] || current_running_version) do |version|
      say "Launching command with version #{version} from existing container...", :magenta

      on(KAMAL.hosts) do |host|
        roles = KAMAL.roles_on(host)

        roles.each do |role|
          execute *KAMAL.auditor.record("Executed cmd '#{cmd}' on app version #{version}", role: role), verbosity: :debug
          puts_by_host host, capture_with_info(*KAMAL.app(role: role, host: host).execute_in_existing_container(cmd, env: env))
        end
      end
    end

  else
    say "Get most recent version available as an image...", :magenta unless options[:version]
    using_version(version_or_latest) do |version|
      say "Launching command with version #{version} from new container...", :magenta
      on(KAMAL.hosts) do |host|
        roles = KAMAL.roles_on(host)

        roles.each do |role|
          execute *KAMAL.auditor.record("Executed cmd '#{cmd}' on app version #{version}"), verbosity: :debug
          puts_by_host host, capture_with_info(*KAMAL.app(role: role, host: host).execute_in_new_container(cmd, env: env, detach: detach))
        end
      end
    end
  end
end

#images ⇒ Object 



195
196
197
 
# File 'lib/kamal/cli/app.rb', line 195

def images
  on(KAMAL.hosts) { |host| puts_by_host host, capture_with_info(*KAMAL.app.list_images) }
end

#logs ⇒ Object 



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
 
# File 'lib/kamal/cli/app.rb', line 207

def logs
  # FIXME: Catch when app containers aren't running

  grep = options[:grep]
  grep_options = options[:grep_options]
  since = options[:since]
  container_id = options[:container_id]
  timestamps = !options[:skip_timestamps]

  if options[:follow]
    lines = options[:lines].presence || ((since || grep) ? nil : 10) # Default to 10 lines if since or grep isn't set

    run_locally do
      info "Following logs on #{KAMAL.primary_host}..."

      KAMAL.specific_roles ||= [ KAMAL.primary_role.name ]
      role = KAMAL.roles_on(KAMAL.primary_host).first

      app = KAMAL.app(role: role, host: host)
      info app.follow_logs(host: KAMAL.primary_host, container_id: container_id, timestamps: timestamps, lines: lines, grep: grep, grep_options: grep_options)
      exec app.follow_logs(host: KAMAL.primary_host, container_id: container_id, timestamps: timestamps, lines: lines, grep: grep, grep_options: grep_options)
    end
  else
    lines = options[:lines].presence || ((since || grep) ? nil : 100) # Default to 100 lines if since or grep isn't set

    on(KAMAL.hosts) do |host|
      roles = KAMAL.roles_on(host)

      roles.each do |role|
        begin
          puts_by_host host, capture_with_info(*KAMAL.app(role: role, host: host).logs(container_id: container_id, timestamps: timestamps, since: since, lines: lines, grep: grep, grep_options: grep_options))
        rescue SSHKit::Command::Failed
          puts_by_host host, "Nothing found"
        end
      end
    end
  end
end

#remove ⇒ Object 



247
248
249
250
251
252
253
254
 
# File 'lib/kamal/cli/app.rb', line 247

def remove
  with_lock do
    stop
    remove_containers
    remove_images
    remove_app_directory
  end
end

#remove_app_directory ⇒ Object 



295
296
297
298
299
300
301
302
303
304
305
306
 
# File 'lib/kamal/cli/app.rb', line 295

def remove_app_directory
  with_lock do
    on(KAMAL.hosts) do |host|
      roles = KAMAL.roles_on(host)

      roles.each do |role|
        execute *KAMAL.auditor.record("Removed #{KAMAL.config.app_directory} on all servers", role: role), verbosity: :debug
        execute *KAMAL.server.remove_app_directory, raise_on_non_zero_exit: false
      end
    end
  end
end

#remove_container(version) ⇒ Object 



257
258
259
260
261
262
263
264
265
266
267
268
 
# File 'lib/kamal/cli/app.rb', line 257

def remove_container(version)
  with_lock do
    on(KAMAL.hosts) do |host|
      roles = KAMAL.roles_on(host)

      roles.each do |role|
        execute *KAMAL.auditor.record("Removed app container with version #{version}", role: role), verbosity: :debug
        execute *KAMAL.app(role: role, host: host).remove_container(version: version)
      end
    end
  end
end

#remove_containers ⇒ Object 



271
272
273
274
275
276
277
278
279
280
281
282
 
# File 'lib/kamal/cli/app.rb', line 271

def remove_containers
  with_lock do
    on(KAMAL.hosts) do |host|
      roles = KAMAL.roles_on(host)

      roles.each do |role|
        execute *KAMAL.auditor.record("Removed all app containers", role: role), verbosity: :debug
        execute *KAMAL.app(role: role, host: host).remove_containers
      end
    end
  end
end

#remove_images ⇒ Object 



285
286
287
288
289
290
291
292
 
# File 'lib/kamal/cli/app.rb', line 285

def remove_images
  with_lock do
    on(KAMAL.hosts) do
      execute *KAMAL.auditor.record("Removed all app images"), verbosity: :debug
      execute *KAMAL.app.remove_images
    end
  end
end

#stale_containers ⇒ Object 



169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
 
# File 'lib/kamal/cli/app.rb', line 169

def stale_containers
  stop = options[:stop]

  with_lock_if_stopping do
    on(KAMAL.hosts) do |host|
      roles = KAMAL.roles_on(host)

      roles.each do |role|
        app = KAMAL.app(role: role, host: host)
        versions = capture_with_info(*app.list_versions, raise_on_non_zero_exit: false).split("\n")
        versions -= [ capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip ]

        versions.each do |version|
          if stop
            puts_by_host host, "Stopping stale container for role #{role} with version #{version}"
            execute *app.stop(version: version), raise_on_non_zero_exit: false
          else
            puts_by_host host,  "Detected stale container for role #{role} with version #{version} (use `kamal app stale_containers --stop` to stop)"
          end
        end
      end
    end
  end
end

#start ⇒ Object 



43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
 
# File 'lib/kamal/cli/app.rb', line 43

def start
  with_lock do
    on(KAMAL.hosts) do |host|
      roles = KAMAL.roles_on(host)

      roles.each do |role|
        app = KAMAL.app(role: role, host: host)
        execute *KAMAL.auditor.record("Started app version #{KAMAL.config.version}"), verbosity: :debug
        execute *app.start, raise_on_non_zero_exit: false

        if role.running_proxy?
          version = capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip
          endpoint = capture_with_info(*app.container_id_for_version(version)).strip
          raise Kamal::Cli::BootError, "Failed to get endpoint for #{role} on #{host}, did the container boot?" if endpoint.empty?

          execute *app.deploy(target: endpoint)
        end
      end
    end
  end
end

#stop ⇒ Object 



66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
 
# File 'lib/kamal/cli/app.rb', line 66

def stop
  with_lock do
    on(KAMAL.hosts) do |host|
      roles = KAMAL.roles_on(host)

      roles.each do |role|
        app = KAMAL.app(role: role, host: host)
        execute *KAMAL.auditor.record("Stopped app", role: role), verbosity: :debug

        if role.running_proxy?
          version = capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip
          endpoint = capture_with_info(*app.container_id_for_version(version)).strip
          if endpoint.present?
            execute *app.remove, raise_on_non_zero_exit: false
          end
        end

        execute *app.stop, raise_on_non_zero_exit: false
      end
    end
  end
end

#version ⇒ Object 



309
310
311
312
313
314
 
# File 'lib/kamal/cli/app.rb', line 309

def version
  on(KAMAL.hosts) do |host|
    role = KAMAL.roles_on(host).first
    puts_by_host host, capture_with_info(*KAMAL.app(role: role, host: host).current_running_version).strip
  end
end