Class: EY::Model::Instance

Inherits:
Object show all
Defined in:
lib/engineyard/model/instance.rb

Constant Summary collapse

EYDEPLOY_VERSION = 
ENV["EY_DEPLOY_VERSION"] || "1.1.0"
EXIT_STATUS = 
Hash.new { |h,k| raise EY::Error, "ey-deploy version checker exited with unknown status code #{k}" }

Instance Method Summary collapse

Instance Method Details

#deploy(app, ref, migration_command = nil, extra_configuration = nil, verbose = false) ⇒ Object 



17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
# File 'lib/engineyard/model/instance.rb', line 17

def deploy(app, ref, migration_command=nil, extra_configuration=nil, verbose=false)
  deploy_args = [
    '--app',    app.name,
    '--repo',   app.repository_uri,
    '--stack',  environment.stack_name,
    '--branch', ref,
  ]

  if extra_configuration
    deploy_args << '--config' << extra_configuration.to_json
  end

  if migration_command
    deploy_args << "--migrate" << migration_command
  end

  invoke_ey_deploy(deploy_args, verbose)
end

#ensure_eydeploy_present ⇒ Object 



63
64
65
66
67
68
69
70
71
72
73
74
75
 
# File 'lib/engineyard/model/instance.rb', line 63

def ensure_eydeploy_present
  case eydeploy_status = ey_deploy_check
  when :ssh_failed
    raise EnvironmentError, "SSH connection to #{hostname} failed"
  when :eydeploy_missing
    yield :installing if block_given?
    install_ey_deploy
  when :ok
    # no action needed
  else
    raise EY::Error, "Internal error: Unexpected status from Instance#ey_deploy_check; got #{eydeploy_status.inspect}"
  end
end

#ey_deploy_check ⇒ Object 



77
78
79
80
81
82
83
84
85
86
 
# File 'lib/engineyard/model/instance.rb', line 77

def ey_deploy_check
  escaped_eydeploy_version = EYDEPLOY_VERSION.gsub(/\./, '\.')

  if ENV["NO_SSH"]
    :ok
  else
    ssh "#{gem_path} list ey-deploy | grep \"ey-deploy \" | egrep -q '#{escaped_eydeploy_version}[,)]'", false
    EXIT_STATUS[$?.exitstatus]
  end
end

#has_app_code? ⇒ Boolean

Returns:

  • (Boolean) 


59
60
61
 
# File 'lib/engineyard/model/instance.rb', line 59

def has_app_code?
  !["db_master", "db_slave"].include?(role.to_s)
end

#install_ey_deploy ⇒ Object 



88
89
90
91
92
93
94
95
96
97
98
 
# File 'lib/engineyard/model/instance.rb', line 88

def install_ey_deploy
  ssh(Escape.shell_command([
        'sudo', 'sh', '-c',
        # rubygems looks at *.gem in its current directory for
        # installation candidates, so we have to make sure it
        # runs from a directory with no gem files in it.
        #
        # rubygems help suggests that --remote will disable this
        # behavior, but it doesn't.
        "cd `mktemp -d` && #{gem_path} install ey-deploy --no-rdoc --no-ri -v #{EYDEPLOY_VERSION}"]))
end

#put_up_maintenance_page(app, verbose = false) ⇒ Object 



50
51
52
 
# File 'lib/engineyard/model/instance.rb', line 50

def put_up_maintenance_page(app, verbose=false)
  invoke_ey_deploy(['enable_maintenance_page', '--app', app.name], verbose)
end

#rollback(app, extra_configuration = nil, verbose = false) ⇒ Object 



36
37
38
39
40
41
42
43
44
45
46
47
 
# File 'lib/engineyard/model/instance.rb', line 36

def rollback(app, extra_configuration=nil, verbose=false)
  deploy_args = ['rollback',
    '--app',   app.name,
    '--stack', environment.stack_name,
  ]

  if extra_configuration
    deploy_args << '--config' << extra_configuration.to_json
  end

  invoke_ey_deploy(deploy_args, verbose)
end

#take_down_maintenance_page(app, verbose = false) ⇒ Object 



54
55
56
 
# File 'lib/engineyard/model/instance.rb', line 54

def take_down_maintenance_page(app, verbose=false)
  invoke_ey_deploy(['disable_maintenance_page', '--app', app.name], verbose)
end