Class: EY::Serverside::DeployBase
- Includes:
- LoggedOutput
- Defined in:
- lib/engineyard-serverside/deploy.rb
Direct Known Subclasses
Constant Summary
Constants included from Dataflow
Dataflow::UnificationError, Dataflow::VERSION
Instance Attribute Summary
Attributes inherited from Task
Instance Method Summary collapse
-
#bundle ⇒ Object
task.
- #cached_deploy ⇒ Object
- #callback(what) ⇒ Object
-
#cleanup_old_releases ⇒ Object
task.
- #conditionally_enable_maintenance_page ⇒ Object
-
#copy_repository_cache ⇒ Object
task.
- #create_revision_file ⇒ Object
-
#deploy ⇒ Object
default task.
- #disable_maintenance_page ⇒ Object
- #enable_maintenance_page ⇒ Object
- #get_bundler_installer(lockfile) ⇒ Object
-
#migrate ⇒ Object
task.
-
#push_code ⇒ Object
task.
- #required_downtime_stack? ⇒ Boolean
-
#restart ⇒ Object
task.
- #restart_command ⇒ Object
- #restart_with_maintenance_page ⇒ Object
-
#rollback ⇒ Object
task.
- #run_with_callbacks(task) ⇒ Object
-
#symlink(release_to_link = c.release_path) ⇒ Object
task.
- #symlink_configs(release_to_link = c.release_path) ⇒ Object
Methods included from LoggedOutput
#debug, #info, logfile, logfile=, #logged_system, verbose=, verbose?, #verbose?
Methods inherited from Task
#initialize, #require_custom_tasks, #roles, #run, #sudo
Methods included from Dataflow
#barrier, #by_need, #flow, included, #local, #need_later, #unify
Constructor Details
This class inherits a constructor from EY::Serverside::Task
Instance Method Details
#bundle ⇒ Object
task
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# File 'lib/engineyard-serverside/deploy.rb', line 131 def bundle if File.exist?("#{c.release_path}/Gemfile") info "~> Gemfile detected, bundling gems" lockfile = File.join(c.release_path, "Gemfile.lock") bundler_installer = if File.exist?(lockfile) get_bundler_installer(lockfile) else warn_about_missing_lockfile bundler_09_installer(default_09_bundler) end sudo "#{serverside_bin} install_bundler #{bundler_installer.version}" bundled_gems_path = File.join(c.shared_path, "bundled_gems") ruby_version_file = File.join(bundled_gems_path, "RUBY_VERSION") system_version_file = File.join(bundled_gems_path, "SYSTEM_VERSION") ruby_version = `ruby -v` system_version = `uname -m` if File.directory?(bundled_gems_path) rebundle = false rebundle = true if File.exist?(ruby_version_file) && File.read(ruby_version_file) != ruby_version rebundle = true if File.exist?(system_version_file) && File.read(system_version_file) != system_version if rebundle info "~> Ruby version change detected, cleaning bundled gems" run "rm -Rf #{bundled_gems_path}" end end run "cd #{c.release_path} && bundle _#{bundler_installer.version}_ install #{bundler_installer.}" run "mkdir -p #{bundled_gems_path} && ruby -v > #{ruby_version_file} && uname -m > #{system_version_file}" end end |
#cached_deploy ⇒ Object
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# File 'lib/engineyard-serverside/deploy.rb', line 18 def cached_deploy debug "Deploying app from cached copy at #{Time.now.asctime}" require_custom_tasks push_code info "~> Starting full deploy" copy_repository_cache with_failed_release_cleanup do create_revision_file run_with_callbacks(:bundle) symlink_configs conditionally_enable_maintenance_page run_with_callbacks(:migrate) callback(:before_symlink) symlink end callback(:after_symlink) run_with_callbacks(:restart) disable_maintenance_page cleanup_old_releases debug "Finished deploy at #{Time.now.asctime}" rescue Exception debug "Finished failing to deploy at #{Time.now.asctime}" puts_deploy_failure raise end |
#callback(what) ⇒ Object
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# File 'lib/engineyard-serverside/deploy.rb', line 253 def callback(what) @callbacks_reached ||= true if File.exist?("#{c.release_path}/deploy/#{what}.rb") run Escape.shell_command(base_callback_command_for(what)) do |server, cmd| per_instance_args = [ '--current-roles', server.roles.join(' '), '--config', c.to_json, ] per_instance_args << '--current-name' << server.name.to_s if server.name cmd << " " << Escape.shell_command(per_instance_args) end end end |
#cleanup_old_releases ⇒ Object
task
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# File 'lib/engineyard-serverside/deploy.rb', line 170 def cleanup_old_releases @cleanup_failed = true info "~> Cleaning up old releases" sudo "ls #{c.release_dir} | head -n -3 | xargs -I{} rm -rf #{c.release_dir}/{}" @cleanup_failed = false end |
#conditionally_enable_maintenance_page ⇒ Object
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# File 'lib/engineyard-serverside/deploy.rb', line 85 def conditionally_enable_maintenance_page if c.migrate? || required_downtime_stack? enable_maintenance_page end end |
#copy_repository_cache ⇒ Object
task
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# File 'lib/engineyard-serverside/deploy.rb', line 209 def copy_repository_cache info "~> Copying to #{c.release_path}" run("mkdir -p #{c.release_path} && rsync -aq #{c.exclusions} #{c.repository_cache}/ #{c.release_path}") info "~> Ensuring proper ownership" sudo("chown -R #{c.user}:#{c.group} #{c.deploy_to}") end |
#create_revision_file ⇒ Object
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# File 'lib/engineyard-serverside/deploy.rb', line 217 def create_revision_file run create_revision_file_command end |
#deploy ⇒ Object
default task
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# File 'lib/engineyard-serverside/deploy.rb', line 12 def deploy debug "Starting deploy at #{Time.now.asctime}" update_repository_cache cached_deploy end |
#disable_maintenance_page ⇒ Object
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# File 'lib/engineyard-serverside/deploy.rb', line 95 def disable_maintenance_page @maintenance_up = false roles :app_master, :app, :solo do run "rm -f #{File.join(c.shared_path, "system", "maintenance.html")}" end end |
#enable_maintenance_page ⇒ Object
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# File 'lib/engineyard-serverside/deploy.rb', line 55 def enable_maintenance_page maintenance_page_candidates = [ "public/maintenance.html.custom", "public/maintenance.html.tmp", "public/maintenance.html", "public/system/maintenance.html.default", ].map do |file| File.join(c.latest_release, file) end # this one is guaranteed to exist maintenance_page_candidates << File.( "default_maintenance_page.html", File.dirname(__FILE__) ) # put in the maintenance page maintenance_file = maintenance_page_candidates.detect do |file| File.exists?(file) end @maintenance_up = true roles :app_master, :app, :solo do maint_page_dir = File.join(c.shared_path, "system") visible_maint_page = File.join(maint_page_dir, "maintenance.html") run Escape.shell_command(['mkdir', '-p', maint_page_dir]) run Escape.shell_command(['cp', maintenance_file, visible_maint_page]) end end |
#get_bundler_installer(lockfile) ⇒ Object
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# File 'lib/engineyard-serverside/deploy.rb', line 327 def get_bundler_installer(lockfile) parser = LockfileParser.new(File.read(lockfile)) case parser.lockfile_version when :bundler09 bundler_09_installer(parser.bundler_version) when :bundler10 bundler_10_installer(parser.bundler_version) else raise "Unknown lockfile version #{parser.lockfile_version}" end end |
#migrate ⇒ Object
task
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# File 'lib/engineyard-serverside/deploy.rb', line 198 def migrate return unless c.migrate? @migrations_reached = true roles :app_master, :solo do cmd = "cd #{c.release_path} && PATH=#{c.binstubs_path}:$PATH #{c.framework_envs} #{c.migration_command}" info "~> Migrating: #{cmd}" run(cmd) end end |
#push_code ⇒ Object
task
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# File 'lib/engineyard-serverside/deploy.rb', line 109 def push_code info "~> Pushing code to all servers" *(EY::Serverside::Server.all.map do |server| need_later { server.sync_directory(config.repository_cache) } end) end |
#required_downtime_stack? ⇒ Boolean
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# File 'lib/engineyard-serverside/deploy.rb', line 91 def required_downtime_stack? %w[ nginx_mongrel glassfish ].include? c.stack end |
#restart ⇒ Object
task
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# File 'lib/engineyard-serverside/deploy.rb', line 117 def restart @restart_failed = true info "~> Restarting app servers" roles :app_master, :app, :solo do run(restart_command) end @restart_failed = false end |
#restart_command ⇒ Object
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# File 'lib/engineyard-serverside/deploy.rb', line 126 def restart_command "/engineyard/bin/app_#{c.app} deploy" end |
#restart_with_maintenance_page ⇒ Object
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# File 'lib/engineyard-serverside/deploy.rb', line 48 def restart_with_maintenance_page require_custom_tasks conditionally_enable_maintenance_page restart disable_maintenance_page end |
#rollback ⇒ Object
task
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# File 'lib/engineyard-serverside/deploy.rb', line 178 def rollback if c.all_releases.size > 1 rolled_back_release = c.latest_release c.release_path = c.previous_release(rolled_back_release) revision = File.read(File.join(c.release_path, 'REVISION')).strip info "~> Rolling back to previous release: #{(revision)}" run_with_callbacks(:symlink) sudo "rm -rf #{rolled_back_release}" bundle info "~> Restarting with previous release" with_maintenance_page { run_with_callbacks(:restart) } else info "~> Already at oldest release, nothing to roll back to" exit(1) end end |
#run_with_callbacks(task) ⇒ Object
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# File 'lib/engineyard-serverside/deploy.rb', line 102 def run_with_callbacks(task) callback("before_#{task}") send(task) callback("after_#{task}") end |
#symlink(release_to_link = c.release_path) ⇒ Object
task
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# File 'lib/engineyard-serverside/deploy.rb', line 243 def symlink(release_to_link=c.release_path) info "~> Symlinking code" run "rm -f #{c.current_path} && ln -nfs #{release_to_link} #{c.current_path} && chown -R #{c.user}:#{c.group} #{c.current_path}" @symlink_changed = true rescue Exception sudo "rm -f #{c.current_path} && ln -nfs #{c.previous_release(release_to_link)} #{c.current_path} && chown -R #{c.user}:#{c.group} #{c.current_path}" @symlink_changed = false raise end |
#symlink_configs(release_to_link = c.release_path) ⇒ Object
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# File 'lib/engineyard-serverside/deploy.rb', line 221 def symlink_configs(release_to_link=c.release_path) info "~> Symlinking configs" [ "chmod -R g+w #{release_to_link}", "rm -rf #{release_to_link}/log #{release_to_link}/public/system #{release_to_link}/tmp/pids", "mkdir -p #{release_to_link}/tmp", "ln -nfs #{c.shared_path}/log #{release_to_link}/log", "mkdir -p #{release_to_link}/public", "mkdir -p #{release_to_link}/config", "ln -nfs #{c.shared_path}/system #{release_to_link}/public/system", "ln -nfs #{c.shared_path}/pids #{release_to_link}/tmp/pids", "find #{c.shared_path}/config -type f -exec ln -s {} #{release_to_link}/config \\;", "ln -nfs #{c.shared_path}/config/database.yml #{release_to_link}/config/database.yml", "ln -nfs #{c.shared_path}/config/mongrel_cluster.yml #{release_to_link}/config/mongrel_cluster.yml", ].each do |cmd| run cmd end sudo "chown -R #{c.user}:#{c.group} #{release_to_link}" run "if [ -f \"#{c.shared_path}/config/newrelic.yml\" ]; then ln -nfs #{c.shared_path}/config/newrelic.yml #{release_to_link}/config/newrelic.yml; fi" end |