Module: StateTransitionHelper

Included in:
ScriptExecutionState
Defined in:
lib/help/state_transition_helper.rb

Instance Method Summary collapse

Instance Method Details

#attach_volume(volume_id, instance_id, temp_device_name, timeout = 240) ⇒ Object

Attaches an EBS volume to an instance Input Parameters:

  • volume_id => EC2 ID for the EBS Volume to be attached

  • instance_id => EC2 ID for the instance to which the volume is supposed to be attached to

  • temp_device_name => device name to be used for attaching (e.g. /dev/sdj1)



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
 
# File 'lib/help/state_transition_helper.rb', line 386

def attach_volume(volume_id, instance_id, temp_device_name, timeout = 240)
  post_message("going to attach volume #{volume_id} to instance #{instance_id} on device #{temp_device_name}...")
  @logger.info "attach volume #{volume_id} to instance #{instance_id} on device #{temp_device_name} (using a timeout of #{timeout}s)"
  ec2_handler().attach_volume(:volume_id => volume_id,
    :instance_id => instance_id,
    :device => temp_device_name
  )
  done = false
  #timeout = 120
  while timeout > 0
    res = ec2_handler().describe_volumes(:volume_id => volume_id)
    vol_state = res['volumeSet']['item'][0]['status']
    attachment_state = "attaching"
    if res['volumeSet']['item'][0]['attachmentSet'] != nil
      attachment_state = res['volumeSet']['item'][0]['attachmentSet']['item'][0]['status']
    end
    @logger.debug "storage attaching: volume state: #{vol_state}, attachment state: #{attachment_state}"
    if vol_state == 'in-use' && attachment_state == 'attached' 
      done = true
      timeout = 0
    end
    sleep(5)
    timeout -= 5
  end
  msg = ""
  if !done
    msg = "Failed to attach volume '#{volume_id}' to instance '#{instance_id}"
    @logger.error "#{msg}"
    raise Exception.new("volume #{volume_id} not attached")
  else
    msg = "volume #{volume_id} successfully attached" 
    @logger.info "#{msg}"
  end
  post_message("#{msg}")
end

#check_string_alnum(str) ⇒ Object

Check if string is not more than 255 character and contains wide char



1300
1301
1302
1303
1304
1305
1306
1307
 
# File 'lib/help/state_transition_helper.rb', line 1300

def check_string_alnum(str)
  if str.match(/^[0-9a-z\-\_\ ]{1,255}$/i)
    return 0
  else
    return 1
  end
  return 1
end

#connect(dns_name, user_name, ssh_keyfile = nil, ssh_keydata = nil, trials = 10, wait_between_trials = 20) ⇒ Object

Connects to the remote host via SSH. Params:

  • dns_name => machine to connect to

  • user_name => name to be used for connection

  • ssh_keyfile => key-file used for ssh

  • ssh_keydata => contents of key-file (either use ssh_keyfile or ssh_keydata)

Returns:

  • OS of the connected machine



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
 
# File 'lib/help/state_transition_helper.rb', line 41

def connect(dns_name, user_name, ssh_keyfile = nil, ssh_keydata = nil,
    trials = 10, wait_between_trials = 20)
  post_message("connecting '#{user_name}' to #{dns_name}...")
  connected = false
  last_connection_problem = ""
  remaining_trials = trials-1
  while !connected && remaining_trials > 0
    remaining_trials -= 1
    if ssh_keyfile != nil
      begin
        @logger.info("connecting using keyfile")
        remote_handler().connect_with_keyfile(dns_name, ssh_keyfile)
        connected = true
      rescue Exception => e
        @logger.info("connection failed due to #{e}")
        last_connection_problem = "#{e}"
        @logger.debug(e.backtrace.select(){|line| line.include?("state_transition_helper")}.join("\n"))
      end
    elsif ssh_keydata != nil
      begin
        @logger.info("connecting using keydata")
        remote_handler().connect(dns_name, user_name, ssh_keydata)
        connected = true
      rescue Exception => e
        @logger.info("connection failed due to #{e}")
        last_connection_problem = "#{e}"
        @logger.debug(e.backtrace.select(){|line| line.include?("state_transition_helper")}.join("\n"))
      end
    else
      raise Exception.new("no key information specified")
    end
    if !connected
      sleep(wait_between_trials) #try again
    end
  end
  if !connected
    raise Exception.new("connection attempts stopped (#{last_connection_problem})")
  end
  os = remote_handler().retrieve_os()
  sudo = remote_handler().use_sudo ? " [sudo]" : ""
  post_message("connected to #{dns_name}#{sudo}. OS installed is #{os}")
  @logger.info "connected to #{dns_name}#{sudo}"
  return os
end

#copy_distribution(destination_path) ⇒ Object

Copy all files of a running linux distribution via rsync to a mounted directory Input Parameters:

  • destination_path => where to copy to



859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
 
# File 'lib/help/state_transition_helper.rb', line 859

def copy_distribution(destination_path)
  post_message("going to start copying files to #{destination_path}. This may take quite a time...")
  @logger.debug "start copying to #{destination_path}"
  start = Time.new.to_i
  if remote_handler().tools_installed?("rsync")
    @logger.debug "use rsync command line"
    status = remote_handler().local_rsync("/", "#{destination_path}", "#{destination_path}")
    status = remote_handler().local_rsync("/dev/", "#{destination_path}/dev/")
    if status == false
      raise Exception.new("failed to copy distribution remotely using rsync")
    end
  else
    @logger.debug "use cp command line"
    status = remote_handler().local_rcopy("/", "#{destination_path}", "/proc /sys /dev /mnt")
    if status == false
      raise Exception.new("failed to copy distribution remotely using cp")
    end
    status = remote_handler().mkdir("#{destination_path}/proc")
    status = remote_handler().mkdir("#{destination_path}/sys")
    status = remote_handler().mkdir("#{destination_path}/mnt")
    status = remote_handler().mkdir("#{destination_path}/dev")
  end
  endtime = Time.new.to_i
  @logger.info "copy took #{(endtime-start)}s"
  post_message("copying is done (took #{endtime-start})s")
end

#create_fs(dns_name, device) ⇒ Object

Create a file-system on a given machine (assumes to be connected already). Input Parameters:

  • dns_name => IP used

  • device => device to be used for file-system creation (e.g. /dev/sdj)



565
566
567
568
569
570
571
572
573
 
# File 'lib/help/state_transition_helper.rb', line 565

def create_fs(dns_name, device)
  post_message("going to create filesystem on #{dns_name} to #{device}...")
  @logger.debug "create filesystem on #{dns_name} to #{device}"
  status = remote_handler().create_filesystem("ext3", device)
  if status == false
    raise Exception.new("failed to create ext3 filesystem on #{device} device on #{dns_name}")
  end
  post_message("filesystem system successfully created")
end

#create_image_from_instance(instance_id, name, description) ⇒ Object

Create an AMI from an EC2 instance



553
554
555
556
557
558
559
 
# File 'lib/help/state_transition_helper.rb', line 553

def create_image_from_instance(instance_id, name, description)
  post_message("going to create AMI from instance #{instance_id}...")
  @logger.debug "create AMI from instance #{instance_id} as #{name}"
  res = ec2_handler().create_image(:instance_id => instance_id, :name => name, :description => description)
  image_id = res['imageId']
  return image_id
end

#create_labeled_fs(dns_name, device, type, label) ⇒ Object

Create a file-system on a given machine (assumes to be connected already). Input Parameters:

  • dns_name => IP used

  • device => device to be used for file-system creation (e.g. /dev/sdj)

  • type => filesystem type (ext2, ext3, ext4)

  • label => add a label to the partition



581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
 
# File 'lib/help/state_transition_helper.rb', line 581

def create_labeled_fs(dns_name, device, type, label)
  post_message("going to create filesystem on #{dns_name} to #{device}...")
  @logger.debug "create filesystem of type '#{type}' (default is ext3) on '#{dns_name}' to '#{device}'"
  fs_type = "ext3"
  if !type.nil? && !type.empty?
    fs_type = type
  end
  @logger.debug "create '#{fs_type}' filesystem on device '#{device}'"
  status = remote_handler().create_filesystem(fs_type, device)
  if status == false
    raise Exception.new("failed to create #{type} filesystem on #{device} device on #{dns_name}")
  end
  post_message("#{fs_type} filesystem system successfully created on device #{device}")
  if !label.nil? && !label.empty?
    post_message("going to add label #{label} for device #{device}...")
    @logger.debug "add label '#{label}' to device '#{device}'"
    if remote_handler().set_device_label_ext(device, label, fs_type)
      post_message("label #{label} added to device #{device}")
    else
      raise Exception.new("failed to add label #{label} to device #{device}")
    end
  end
end

#create_snapshot(volume_id, description = "") ⇒ Object

Creates a snapshot for an EBS volume.

Input Parameters

  • volume_id => EC2 ID for the EBS volume to be snapshotted

Returns:

  • snapshot_id => EC2 ID for the snapshot created



472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
 
# File 'lib/help/state_transition_helper.rb', line 472

def create_snapshot(volume_id, description = "")
  post_message("going to create a snapshot for volume #{volume_id}...")
  @logger.debug "create snapshot for volume #{volume_id}"
  start_time = Time.new.to_i
  res = ec2_handler().create_snapshot(:volume_id => volume_id,
    :description => description)
  snapshot_id = res['snapshotId']
  @logger.info "snapshot_id = #{snapshot_id}"
  done = false
  while !done
    sleep(5)
    #TODO: check for timeout?
    res = ec2_handler().describe_snapshots(:snapshot_id => snapshot_id)
    @logger.debug "snapshot creating: #{res.inspect}"
    if res['snapshotSet']['item'][0]['status'] == 'completed'
      done = true
    end
  end
  end_time = Time.new.to_i
  @logger.info "create snapshot took #{(end_time-start_time)}s"
  post_message("snapshot is done with ID=#{snapshot_id} (took #{(end_time-start_time)}s)")
  return snapshot_id
end

#create_volume(availability_zone, size = "10") ⇒ Object

Creates a new EBS volume. Input Parameters:

  • availability_zone => availability zone for the volume

  • size => size in Gigabytes

Returns

  • volume_id => EC2 EBS Volume ID



331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
 
# File 'lib/help/state_transition_helper.rb', line 331

def create_volume(availability_zone, size = "10")
  post_message("going to create a new EBS volume of size #{size}GB...")
  @logger.debug "create volume in zone #{availability_zone}"
  res = ec2_handler().create_volume(:availability_zone => availability_zone, :size => size.to_s)
  volume_id = res['volumeId']
  started = false
  while !started
    sleep(5)
    #TODO: check for timeout?
    res = ec2_handler().describe_volumes(:volume_id => volume_id)
    state = res['volumeSet']['item'][0]['status']
    @logger.debug "volume state #{state}"
    if state == 'available'
      started = true
    end
  end
  post_message("EBS volume #{volume_id} is ready")
  return volume_id
end

#create_volume_from_snapshot(snapshot_id, availability_zone) ⇒ Object

Creates a new EBS volume from a snapshot ID. Input Parameters:

  • availability_zone => availability zone for the volume

  • size => size of the volume to be created

  • snapshot_id => EC2 Snapshot ID used to create the volume

Returns

  • volume_id => EC2 EBS Volume ID created



358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
 
# File 'lib/help/state_transition_helper.rb', line 358

def create_volume_from_snapshot(snapshot_id, availability_zone)
  post_message("going to create a new EBS volume from the specified snapshot...")
  @logger.debug "create volume in zone #{availability_zone}"
  start_time = Time.new.to_i
  res = ec2_handler().create_volume(:snapshot_id => snapshot_id, :availability_zone => availability_zone)
  volume_id = res['volumeId']
  started = false
  while !started
    sleep(5)
    #TODO: check for timeout?
    res = ec2_handler().describe_volumes(:volume_id => volume_id)
    state = res['volumeSet']['item'][0]['status']
    @logger.debug "volume state #{state}"
    if state == 'available'
      started = true
    end
  end
  end_time = Time.new.to_i
  @logger.info "create volume from snapshot took #{(end_time-start_time)}s"
  post_message("EBS volume #{volume_id} is ready (took #{end_time-start_time}s)")
  return volume_id
end

#delete_snapshot(snapshot_id) ⇒ Object

Deletes a snapshot.



497
498
499
500
501
502
503
 
# File 'lib/help/state_transition_helper.rb', line 497

def delete_snapshot(snapshot_id)
  post_message("going to delete snapshot #{snapshot_id}...")
  @logger.info("going to delete snapshot #{snapshot_id}...")
  ec2_handler().delete_snapshot(:snapshot_id => snapshot_id)
  @logger.info("snapshot #{snapshot_id} deleted")
  post_message("snapshot #{snapshot_id} deleted")
end

#delete_volume(volume_id) ⇒ Object

Delete an EBS volume. Input Parameters:

  • volume_id => EC2 ID for the EBS Volume to be deleted



460
461
462
463
464
465
 
# File 'lib/help/state_transition_helper.rb', line 460

def delete_volume(volume_id)
  post_message("going to delete volume #{volume_id} (no longer needed)...")
  @logger.debug "delete volume #{volume_id}"
  ec2_handler().delete_volume(:volume_id => volume_id)
  post_message("volume #{volume_id} deleted")
end

#describe_instance(instance_id) ⇒ Object 



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
 
# File 'lib/help/state_transition_helper.rb', line 212

def describe_instance(instance_id)
  res = ec2_handler.describe_instances(:instance_id => instance_id)
  state = res['reservationSet']['item'][0]['instancesSet']['item'][0]['instanceState']
  @logger.info "instance is in state #{state['name']} (#{state['code']})"
  dns_name = ""
  availability_zone = ""
  kernel_id = ""
  ramdisk_id = ""
  architecture = ""
  root_device_name = ""
  if state['code'].to_i == 16
    started = true
    post_message("instance is up and running")
    dns_name = res['reservationSet']['item'][0]['instancesSet']['item'][0]['dnsName']
    availability_zone = res['reservationSet']['item'][0]['instancesSet']['item'][0]['placement']['availabilityZone']
    kernel_id = res['reservationSet']['item'][0]['instancesSet']['item'][0]['kernelId']
    ramdisk_id = res['reservationSet']['item'][0]['instancesSet']['item'][0]['ramdiskId']
    architecture = res['reservationSet']['item'][0]['instancesSet']['item'][0]['architecture']
    root_device_name = res['reservationSet']['item'][0]['instancesSet']['item'][0]['rootDeviceName']
  else
    post_message("instance is not up and running: code #{state['code'].to_i}")
    availability_zone = res['reservationSet']['item'][0]['instancesSet']['item'][0]['placement']['availabilityZone']
    kernel_id = res['reservationSet']['item'][0]['instancesSet']['item'][0]['kernelId']
    ramdisk_id = res['reservationSet']['item'][0]['instancesSet']['item'][0]['ramdiskId']
    architecture = res['reservationSet']['item'][0]['instancesSet']['item'][0]['architecture']
    root_device_name = res['reservationSet']['item'][0]['instancesSet']['item'][0]['rootDeviceName']
  end
  return instance_id, dns_name, availability_zone, kernel_id, ramdisk_id, architecture, root_device_name
end

#detach_volume(volume_id, instance_id, timeout = 240) ⇒ Object

Detach an EBS volume from an instance. Input Parameters:

  • volume_id => EC2 ID for the EBS Volume to be detached

  • instance_id => EC2 ID for the instance to detach from



426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
 
# File 'lib/help/state_transition_helper.rb', line 426

def detach_volume(volume_id, instance_id, timeout = 240)
  post_message("going to detach volume #{volume_id} from instance #{instance_id}...")
  @logger.info "detach volume #{volume_id} from instance #{instance_id} (using a timeout of #{timeout}s)"
  ec2_handler().detach_volume(:volume_id => volume_id,
    :instance_id => instance_id
  )
  done = false
  #timeout = 120
  while timeout > 0
    sleep(3)
    res = ec2_handler().describe_volumes(:volume_id => volume_id)
    @logger.debug "volume detaching: #{res.inspect}"
    if res['volumeSet']['item'][0]['status'] == 'available'
      done = true
      timeout = 0
    end
    sleep(5)
    timeout -= 5
  end
  msg = ""
  if !done
    msg = "Failed to detach volume '#{volume_id}' from instance '#{instance_id}"
    @logger.error "#{msg}"
    raise Exception.new("volume #{volume_id} not detached")
  else
    msg = "volume #{volume_id} successfully detached" 
    @logger.info "#{msg}"
  end
  post_message("#{msg}")
end

#determine_file(ip, user_name, ssh_keydata, file_candidates) ⇒ Object

From a list of existing files, return the first that exists



1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
 
# File 'lib/help/state_transition_helper.rb', line 1051

def determine_file(ip, user_name, ssh_keydata, file_candidates)
  connect(ip, user_name, nil, ssh_keydata)
  begin
    file_candidates.each() {|file_path|
      if remote_handler().file_exists?(file_path)
        return file_path
      end
    }
    return nil
  rescue
    raise
  ensure
    disconnect()
  end
end

#disable_ssh_tty(host) ⇒ Object 



1008
1009
1010
1011
1012
1013
 
# File 'lib/help/state_transition_helper.rb', line 1008

def disable_ssh_tty(host)
  post_message("going to disable SSH tty on #{host}...")
  @logger.info "disable SSH tty on #{host}"
  remote_handler().disable_sudoers_requiretty()
  post_message("SSH tty disabled")
end

#disconnect ⇒ Object

If a remote command handler is connected, disconnect him silently.



87
88
89
90
91
92
93
 
# File 'lib/help/state_transition_helper.rb', line 87

def disconnect
  begin
    remote_handler().disconnect()
  rescue
  end
  self.remote_handler= nil
end

#ec2_handler ⇒ Object 



1326
1327
1328
1329
1330
1331
 
# File 'lib/help/state_transition_helper.rb', line 1326

def ec2_handler()
  if @ec2_handler == nil
    @ec2_handler = @context[:ec2_api_handler]
  end
  @ec2_handler
end

#ec2_handler=(ec2_handler) ⇒ Object 



1333
1334
1335
 
# File 'lib/help/state_transition_helper.rb', line 1333

def ec2_handler=(ec2_handler)
  @ec2_handler = ec2_handler
end

#enable_ssh_tty(host) ⇒ Object 



1015
1016
1017
1018
1019
1020
 
# File 'lib/help/state_transition_helper.rb', line 1015

def enable_ssh_tty(host)
  post_message("going to enable SSH tty on #{host}...")
  @logger.info "enable SSH tty on #{host}"
  remote_handler().enable_sudoers_requiretty()
  post_message("SSH tty enabled")
end

#get_aws_kernel_image_aki(source_endpoint, source_aki, target_endpoint) ⇒ Object

Mapping AmazonKernel Image IDs From documentation: docs.amazonwebservices.com/AWSEC2/latest/UserGuide/index.html?UserProvidedkernels.html

  • US-East-1

    aki-4c7d9525 ec2-public-images/pv-grub-hd00-V1.01-i386.gz.manifest.xml
aki-4e7d9527 ec2-public-images/pv-grub-hd00-V1.01-x86_64.gz.manifest.xml
aki-407d9529 ec2-public-images/pv-grub-hd0-V1.01-i386.gz.manifest.xml
aki-427d952b ec2-public-images/pv-grub-hd0-V1.01-x86_64.gz.manifest.xml
aki-525ea73b ec2-public-images/pv-grub-hd00_1.02-i386.gz.manifest.xml
aki-8e5ea7e7 ec2-public-images/pv-grub-hd00_1.02-x86_64.gz.manifest.xml
aki-805ea7e9 ec2-public-images/pv-grub-hd0_1.02-i386.gz.manifest.xml
aki-825ea7eb ec2-public-images/pv-grub-hd0_1.02-x86_64.gz.manifest.xml

  • US-West-1

    aki-9da0f1d8 ec2-public-images-us-west-1/pv-grub-hd00-V1.01-i386.gz.manifest.xml
aki-9fa0f1da ec2-public-images-us-west-1/pv-grub-hd00-V1.01-x86_64.gz.manifest.xml
aki-99a0f1dc ec2-public-images-us-west-1/pv-grub-hd0-V1.01-i386.gz.manifest.xml
aki-9ba0f1de ec2-public-images-us-west-1/pv-grub-hd0-V1.01-x86_64.gz.manifest.xml
aki-87396bc2 ec2-public-images-us-west-1/pv-grub-hd00_1.02-i386.gz.manifest.xml
aki-81396bc4 ec2-public-images-us-west-1/pv-grub-hd00_1.02-x86_64.gz.manifest.xml
aki-83396bc6 ec2-public-images-us-west-1/pv-grub-hd0_1.02-i386.gz.manifest.xml
aki-8d396bc8 ec2-public-images-us-west-1/pv-grub-hd0_1.02-x86_64.gz.manifest.xml

  • US-West-2

    aki-dee26fee ec2-public-images-us-west-2/pv-grub-hd00-V1.01-i386.gz.manifest.xml
aki-90e26fa0 ec2-public-images-us-west-2/pv-grub-hd00-V1.01-x86_64.gz.manifest.xml
aki-dce26fec ec2-public-images-us-west-2/pv-grub-hd0-V1.01-i386.gz.manifest.xml
aki-ace26f9c ec2-public-images-us-west-2/pv-grub-hd0-V1.01-x86_64.gz.manifest.xml
aki-c0e26ff0 ec2-public-images-us-west-2/pv-grub-hd00_1.02-i386.gz.manifest.xml
aki-94e26fa4 ec2-public-images-us-west-2/pv-grub-hd00_1.02-x86_64.gz.manifest.xml
aki-c2e26ff2 ec2-public-images-us-west-2/pv-grub-hd0_1.02-i386.gz.manifest.xml
aki-98e26fa8 ec2-public-images-us-west-2/pv-grub-hd0_1.02-x86_64.gz.manifest.xml

  • EU-West-1

    aki-47eec433 ec2-public-images-eu/pv-grub-hd00-V1.01-i386.gz.manifest.xml
aki-41eec435 ec2-public-images-eu/pv-grub-hd00-V1.01-x86_64.gz.manifest.xml
aki-4deec439 ec2-public-images-eu/pv-grub-hd0-V1.01-i386.gz.manifest.xml
aki-4feec43b ec2-public-images-eu/pv-grub-hd0-V1.01-x86_64.gz.manifest.xml
aki-8a6657fe ec2-public-images-eu/pv-grub-hd00_1.02-i386.gz.manifest.xml
aki-60695814 ec2-public-images-eu/pv-grub-hd00_1.02-x86_64.gz.manifest.xml
aki-64695810 ec2-public-images-eu/pv-grub-hd0_1.02-i386.gz.manifest.xml
aki-62695816 ec2-public-images-eu/pv-grub-hd0_1.02-x86_64.gz.manifest.xml

  • AP-SouthEast-1

    aki-6fd5aa3d ec2-public-images-ap-southeast-1/pv-grub-hd00-V1.01-i386.gz.manifest.xml
aki-6dd5aa3f ec2-public-images-ap-southeast-1/pv-grub-hd00-V1.01-x86_64.gz.manifest.xml
aki-13d5aa41 ec2-public-images-ap-southeast-1/pv-grub-hd0-V1.01-i386.gz.manifest.xml
aki-11d5aa43 ec2-public-images-ap-southeast-1/pv-grub-hd0-V1.01-x86_64.gz.manifest.xml
aki-a0225af2 ec2-public-images-ap-southeast-1/pv-grub-hd00_1.02-i386.gz.manifest.xml
aki-a6225af4 ec2-public-images-ap-southeast-1/pv-grub-hd00_1.02-x86_64.gz.manifest.xml
aki-a4225af6 ec2-public-images-ap-southeast-1/pv-grub-hd0_1.02-i386.gz.manifest.xml
aki-aa225af8 ec2-public-images-ap-southeast-1/pv-grub-hd0_1.02-x86_64.gz.manifest.xml

  • AP-NorthEast-1

    aki-d209a2d3 ec2-public-images-ap-northeast-1/pv-grub-hd0-V1.01-i386.gz.manifest.xml
aki-d409a2d5 ec2-public-images-ap-northeast-1/pv-grub-hd0-V1.01-x86_64.gz.manifest.xml
aki-d609a2d7 ec2-public-images-ap-northeast-1/pv-grub-hd00-V1.01-i386.gz.manifest.xml
aki-d809a2d9 ec2-public-images-ap-northeast-1/pv-grub-hd00-V1.01-x86_64.gz.manifest.xml
aki-e85df7e9 ec2-public-images-ap-northeast-1/pv-grub-hd00_1.02-i386.gz.manifest.xml
aki-ea5df7eb ec2-public-images-ap-northeast-1/pv-grub-hd00_1.02-x86_64.gz.manifest.xml
aki-ec5df7ed ec2-public-images-ap-northeast-1/pv-grub-hd0_1.02-i386.gz.manifest.xml
aki-ee5df7ef ec2-public-images-ap-northeast-1/pv-grub-hd0_1.02-x86_64.gz.manifest.xml

  • SA-East-1

    aki-cc3ce3d1 ec2-public-images-sa-east-1/pv-grub-hd0_1.02-x86_64.gz.manifest.xml
aki-bc3ce3a1 ec2-public-images-sa-east-1/pv-grub-hd0_1.02-i386.gz.manifest.xml
aki-d23ce3cf ec2-public-images-sa-east-1/pv-grub-hd00_1.02-x86_64.gz.manifest.xml
aki-823ce39f ec2-public-images-sa-east-1/pv-grub-hd00_1.02-i386.gz.manifest.xml



1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
 
# File 'lib/help/state_transition_helper.rb', line 1128

def get_aws_kernel_image_aki(source_endpoint, source_aki, target_endpoint)
  map = { 'us-east-1' => {'aki-4c7d9525' => 'pv-grub-hd00-V1.01-i386',
                          'aki-4e7d9527' => 'pv-grub-hd00-V1.01-x86_64',
                          'aki-407d9529' => 'pv-grub-hd0-V1.01-i386',
                          'aki-427d952b' => 'pv-grub-hd0-V1.01-x86_64',
                          'aki-525ea73b' => 'pv-grub-hd00_1.02-i386',
                          'aki-8e5ea7e7' => 'pv-grub-hd00_1.02-x86_64',
                          'aki-805ea7e9' => 'pv-grub-hd0_1.02-i386',
                          'aki-825ea7eb' => 'pv-grub-hd0_1.02-x86_64',
                          'aki-b6aa75df' => 'pv-grub-hd0_1.03-i386',
                          'aki-88aa75e1' => 'pv-grub-hd0_1.03-x86_64',
                          'aki-b2aa75db' => 'pv-grub-hd00_1.03-i386',
                          'aki-b4aa75dd' => 'pv-grub-hd00_1.03-x86_64',

                          #RHEL kernel Amazon Kernel ID
                          'aki-36ed075f' => 'aki-rhel-i386',
                          'aki-08ed0761' => 'aki-rhel-x86_64'	
                         }, 
          'us-west-1' => {'aki-9da0f1d8' => 'pv-grub-hd00-V1.01-i386',
                          'aki-9fa0f1da' => 'pv-grub-hd00-V1.01-x86_64',
                          'aki-99a0f1dc' => 'pv-grub-hd0-V1.01-i386',
                          'aki-9ba0f1de' => 'pv-grub-hd0-V1.01-x86_64',
                          'aki-87396bc2' => 'pv-grub-hd00_1.02-i386',
                          'aki-81396bc4' => 'pv-grub-hd00_1.02-x86_64',
                          'aki-83396bc6' => 'pv-grub-hd0_1.02-i386',
                          'aki-8d396bc8' => 'pv-grub-hd0_1.02-x86_64',
                          'aki-f57e26b0' => 'pv-grub-hd0_1.03-i386',
                          'aki-f77e26b2' => 'pv-grub-hd0_1.03-x86_64',
                          'aki-e97e26ac' => 'pv-grub-hd00_1.03-i386',
                          'aki-eb7e26ae' => 'pv-grub-hd00_1.03-x86_64',

                          #RHEL kernel Amazon Kernel ID:
                          'aki-772c7f32' => 'aki-rhel-i386',	# RH-pv-grub-hd0-V1.01-i386
                          'aki-712c7f34' => 'aki-rhel-x86_64'	# RH-pv-grub-hd0-V1.01-x86_64
                         },
          'us-west-2' => {'aki-dee26fee' => 'pv-grub-hd00-V1.01-i386',
                          'aki-90e26fa0' => 'pv-grub-hd00-V1.01-x86_64',
                          'aki-dce26fec' => 'pv-grub-hd0-V1.01-i386',
                          'aki-ace26f9c' => 'pv-grub-hd0-V1.01-x86_64',
                          'aki-c0e26ff0' => 'pv-grub-hd00_1.02-i386',
                          'aki-94e26fa4' => 'pv-grub-hd00_1.02-x86_64',
                          'aki-c2e26ff2' => 'pv-grub-hd0_1.02-i386',
                          'aki-98e26fa8' => 'pv-grub-hd0_1.02-x86_64',
                          'aki-fa37baca' => 'pv-grub-hd0_1.03-i386',
                          'aki-fc37bacc' => 'pv-grub-hd0_1.03-x86_64',
                          'aki-f637bac6' => 'pv-grub-hd00_1.03-i386',
                          'aki-f837bac8' => 'pv-grub-hd00_1.03-x86_64',

                          #RHEL kernel Amazon Kernel ID
                          'aki-2efa771e' => 'aki-rhel-i386',
                          'aki-10fa7720' => 'aki-rhel-x86_64'
                         },
          'eu-west-1' => {'aki-47eec433' => 'pv-grub-hd00-V1.01-i386',
                          'aki-41eec435' => 'pv-grub-hd00-V1.01-x86_64',
                          'aki-4deec439' => 'pv-grub-hd0-V1.01-i386',
                          'aki-4feec43b' => 'pv-grub-hd0-V1.01-x86_64',
                          'aki-8a6657fe' => 'pv-grub-hd00_1.02-i386',
                          'aki-60695814' => 'pv-grub-hd00_1.02-x86_64',
                          'aki-64695810' => 'pv-grub-hd0_1.02-i386',
                          'aki-62695816' => 'pv-grub-hd0_1.02-x86_64',
                          'aki-75665e01' => 'pv-grub-hd0_1.03-i386',
                          'aki-71665e05' => 'pv-grub-hd0_1.03-x86_64',
                          'aki-89655dfd' => 'pv-grub-hd00_1.03-i386',
                          'aki-8b655dff' => 'pv-grub-hd00_1.03-x86_64',

                          #RHEL kernel Amazon Kernel ID
                          'aki-af0a3ddb' => 'aki-rhel-i386',
                          'aki-a90a3ddd' => 'aki-rhel-x86_64'	
                         },
          'ap-southeast-1' => {'aki-6fd5aa3d' => 'pv-grub-hd00-V1.01-i386',
                               'aki-6dd5aa3f' => 'pv-grub-hd00-V1.01-x86_64',
                               'aki-13d5aa41' => 'pv-grub-hd0-V1.01-i386',
                               'aki-11d5aa43' => 'pv-grub-hd0-V1.01-x86_64',
                               'aki-a0225af2' => 'pv-grub-hd00_1.02-i386',
                               'aki-a6225af4' => 'pv-grub-hd00_1.02-x86_64',
                               'aki-a4225af6' => 'pv-grub-hd0_1.02-i386',
                               'aki-aa225af8' => 'pv-grub-hd0_1.02-x86_64',
                               'aki-f81354aa' => 'pv-grub-hd0_1.03-i386',
                               'aki-fe1354ac' => 'pv-grub-hd0_1.03-x86_64',
                               'aki-f41354a6' => 'pv-grub-hd00_1.03-i386',
                               'aki-fa1354a8' => 'pv-grub-hd00_1.03-x86_64',

                               #RHEL kernel Amazon Kernel ID
                               'aki-9c235ace' => 'aki-rhel-i386',
                               'aki-82235ad0' => 'aki-rhel-x86_64'	
                         },
          'ap-northeast-1' => {'aki-d209a2d3' => 'pv-grub-hd00-V1.01-i386',
                               'aki-d409a2d5' => 'pv-grub-hd00-V1.01-x86_64',
                               'aki-d609a2d7' => 'pv-grub-hd0-V1.01-i386',
                               'aki-d809a2d9' => 'pv-grub-hd0-V1.01-x86_64',
                               'aki-e85df7e9' => 'pv-grub-hd00_1.02-i386',
                               'aki-ea5df7eb' => 'pv-grub-hd00_1.02-x86_64',
                               'aki-ec5df7ed' => 'pv-grub-hd0_1.02-i386',
                               'aki-ee5df7ef' => 'pv-grub-hd0_1.02-x86_64',
                               'aki-42992843' => 'pv-grub-hd0_1.03-i386',
                               'aki-44992845' => 'pv-grub-hd0_1.03-x86_64',
                               'aki-3e99283f' => 'pv-grub-hd00_1.03-i386',
                               'aki-40992841' => 'pv-grub-hd00_1.03-x86_64',

                               #RHEL kernel Amazon Kernel ID
                               'aki-66c06a67' => 'aki-rhel-i386',
                               'aki-68c06a69' => 'aki-rhel-x86_64'
                         },
          'sa-east-1' => {'aki-803ce39d' => 'pv-grub-hd00-V1.01-i386',
                          'aki-d03ce3cd' => 'pv-grub-hd00-V1.01-x86_64',
                          'aki-863ce39b' => 'pv-grub-hd0-V1.01-i386',
                          'aki-d63ce3cb' => 'pv-grub-hd0-V1.01-x86_64',
                          'aki-bc3ce3a1' => 'pv-grub-hd00_1.02-i386',
                          'aki-cc3ce3d1' => 'pv-grub-hd00_1.02-x86_64',
                          'aki-823ce39f' => 'pv-grub-hd0_1.02-i386',
                          'aki-d23ce3cf' => 'pv-grub-hd0_1.02-x86_64',
                          'aki-ca8f51d7' => 'pv-grub-hd0_1.03-i386',
                          'aki-c48f51d9' => 'pv-grub-hd0_1.03-x86_64',
                          'aki-ce8f51d3' => 'pv-grub-hd00_1.03-i386',
                          'aki-c88f51d5' => 'pv-grub-hd00_1.03-x86_64',

                          #RHEL kernel Amazon Kernel ID
                          'aki-1a38e707' => 'aki-rhel-i386',
                          'aki-1438e709' => 'aki-rhel-x86_64'
                         }
        }
  target_aki = ''
  source_region = get_aws_region_from_endpoint(source_endpoint)
  target_region = get_aws_region_from_endpoint(target_endpoint)
  post_message("mapping AKI '#{source_aki}' from #{source_region} region to #{target_region} region...")

  if map[source_region] == nil
    Exception.new("source region not supported")
  elsif map[target_region] == nil
    Exception.new("target region not supported")
  else
    if map[source_region][source_aki] == nil
      Exception.new("aki not found in source region")
    else
      pv_grub_info = map[source_region][source_aki]
      map[target_region].each() {|key, value|
        if pv_grub_info.eql?(value)
          @logger.debug "found AKI: #{key} for #{value}"
          target_aki = key
          break
        end
      }
    end
  end
  post_message("AKI mapped to #{target_aki}")
  return target_aki
end

#get_aws_region_from_endpoint(endpoint) ⇒ Object 



1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
 
# File 'lib/help/state_transition_helper.rb', line 1276

def get_aws_region_from_endpoint(endpoint)
  region = "us-east-1" 
  case endpoint
    when /us-east/
      region = "us-east-1"
    when /us-west-2/
      region = "us-west-2"
    when /us-west-1/
      region = "us-west-1"
    when /eu-west/
      region = "eu-west-1"
    when /ap-southeast/
      region = "ap-southeast-1"
    when /ap-northeast/
      region = "ap-northeast-1"
    when /sa-east-1/
      region = "sa-east-1"
    else
      region = "us-east-1"
  end
  return region
end

#get_partition_fs_type(part) ⇒ Object

Get partition filesytem type



796
797
798
799
800
801
802
803
804
805
806
807
808
 
# File 'lib/help/state_transition_helper.rb', line 796

def get_partition_fs_type(part)
  post_message("Retrieving '#{part}' partition filesystem type...")
  @logger.debug "get #{part} partition filesystem type"
  # get partition device and then its fs type
  part_fs_type = remote_handler().get_partition_fs_type(part)
  @logger.debug "Found '#{part_fs_type}' as filesystem type"
  if part_fs_type.nil? || part_fs_type.empty?
    raise Exception.new("Failed to retrieve filesystem type for '#{part}' partition")
  else
    post_message("'#{part}' partition contains an #{part_fs_type} filesystem")
  end
  return part_fs_type
end

#get_partition_fs_type_and_label(part) ⇒ Object

Get partition filesytem type and label



811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
 
# File 'lib/help/state_transition_helper.rb', line 811

def get_partition_fs_type_and_label(part)
  post_message("Retrieving '#{part}' partition filesystem type...")
  @logger.debug "get #{part} partition filesystem type"
  # get partition device and then its fs type
  part_fs_type = remote_handler().get_partition_fs_type(part)
  @logger.debug "Found '#{part_fs_type}' as filesystem type"
  if part_fs_type.nil? || part_fs_type.empty?
    raise Exception.new("Failed to retrieve filesystem type for '#{part}' partition")
  else
    post_message("'#{part}' partition contains an #{part_fs_type} filesystem")
  end
  part_device = remote_handler().get_partition_device(part)
  @logger.debug "Found '#{part_device}' as partition device"
  if part_device.nil? || part_device.empty?
    raise Exception.new("Failed to retrieve device for '#{part}' partition")
  else
     post_message("'#{part}' partitition on device '#{part_device}'")
  end
  part_label = remote_handler().get_device_label_ext(part_device, part_fs_type)
  @logger.debug "Found label '#{part_label}'"
  if part_label.nil? || part_label.empty?
    post_message("'#{part}' partition has no label specified")
  else
    post_message("'#{part}' partition label '#{part_label}' for device node '#{part_device}'")
  end
  return part_fs_type, part_label
end

#get_partition_label(part) ⇒ Object

Get partition label



735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
 
# File 'lib/help/state_transition_helper.rb', line 735

def get_partition_label(part)
  post_message("Retrieving '#{part}' partition label if any...")
  @logger.debug "get #{part} partition label"
  # get part device and then its label
  part_device = remote_handler().get_partition_device(part)
  @logger.debug "Found '#{part_device}' as partition device"
  label = remote_handler().get_device_label(part_device)
  @logger.debug "Found label '#{label}'"
  if label.nil? || label.empty?
    post_message("'#{part}' partition has no label specified")
  else
    post_message("'#{part}' partition label '#{label}' for device node '#{part_device}'")
  end
  return label
end

#get_root_device_name ⇒ Object

Get root partition



709
710
711
712
713
714
715
 
# File 'lib/help/state_transition_helper.rb', line 709

def get_root_device_name()
  post_message("Retrieving '/' root device name...")
  @logger.debug "get root device name"
  root_device = remote_handler().get_root_device()
  @logger.debug "Found '#{root_device}' as root device"
  return root_device
end

#get_root_partition_fs_type ⇒ Object

Get root filesytem type



752
753
754
755
756
757
758
759
760
761
762
763
764
 
# File 'lib/help/state_transition_helper.rb', line 752

def get_root_partition_fs_type()
  post_message("Retrieving '/' root partition filesystem type...")
  @logger.debug "get root partition filesystem type"
  # get root device and then its fs type
  root_fs_type = remote_handler().get_root_fs_type()
  @logger.debug "Found '#{root_fs_type}' as root filesystem type"
  if root_fs_type.nil? || root_fs_type.empty?
    raise Exception.new("Failed to retrieve filesystem type for '/' root partition")
  else
    post_message("'/' root partition contains an #{root_fs_type} filesystem")
  end
  return root_fs_type
end

#get_root_partition_fs_type_and_label ⇒ Object

Get root filesytem type and label



767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
 
# File 'lib/help/state_transition_helper.rb', line 767

def get_root_partition_fs_type_and_label()
  post_message("Retrieving '/' root partition filesystem type and label...")
  @logger.debug "get root partition filesystem type"
  # get root device and then its fs type
  root_fs_type = remote_handler().get_root_fs_type()
  @logger.debug "Found '#{root_fs_type}' as root filesystem type"
  if root_fs_type.nil? || root_fs_type.empty?
    raise Exception.new("Failed to retrieve filesystem type for '/' root partition")
  else
    post_message("'/' root partition contains an #{root_fs_type} filesystem")
  end
  root_device = remote_handler().get_root_device()
  @logger.debug "Found '#{root_device}' as root device"
  if root_device.nil? || root_device.empty?
    raise Exception.new("Failed to retrieve root device for '/' root partition")
  else
     post_message("'/' root partitition on root device '#{root_device}'")
  end
  root_label = remote_handler().get_device_label_ext(root_device, root_fs_type)
  @logger.debug "Found label '#{root_label}'"
  if root_label.nil? || root_label.empty?
    post_message("'/' root partition has no label specified")
  else
    post_message("'/' root partition label '#{root_label}' for root device node '#{root_device}'")
  end
  return root_fs_type, root_label
end

#get_root_partition_label ⇒ Object

Get root partition label



718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
 
# File 'lib/help/state_transition_helper.rb', line 718

def get_root_partition_label()
  post_message("Retrieving '/' root partition label if any...")
  @logger.debug "get root partition label"
  # get root device and then its label
  root_device = remote_handler().get_root_device()
  @logger.debug "Found '#{root_device}' as root device"
  label = remote_handler().get_device_label(root_device)
  @logger.debug "Found label '#{label}'"
  if label.nil? || label.empty?
    post_message("'/' root partition has no label specified")
  else
    post_message("'/' root partition label '#{label}' for root device node '#{root_device}'")
  end
  return label
end

#get_root_volume_id(instance_id) ⇒ Object

Retrieve the root volume ID of an instance



840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
 
# File 'lib/help/state_transition_helper.rb', line 840

def get_root_volume_id(instance_id)
  post_message("getting 'root volume ID' (volume ID attached as RootDeviceName) of '#{instance_id}' instance...")
  volume_id = nil
  res = ec2_handler().describe_instances(:instance_id => instance_id)
  root_device_name = res['reservationSet']['item'][0]['instancesSet']['item'][0]['rootDeviceName']
  block_device_map = res['reservationSet']['item'][0]['instancesSet']['item'][0]['blockDeviceMapping']['item']
  block_device_map.each(){|blk_dev|
    if blk_dev['deviceName'] == root_device_name
      volume_id = blk_dev['ebs']['volumeId']
      post_message("found '#{volume_id}' attached as '#{root_device_name}' rootDeviceName")
      break
    end
  }
  return volume_id
end

#launch_instance(ami_id, key_name, security_group_name, ec2_handler = nil, type = nil, availability_zone = nil) ⇒ Object

Launch an instance based on an AMI ID Input Parameters:

  • ami_id => ID of the AMI to be launched

  • key_name => name of the key to access the instance

  • security_group_name => name of the security group to be used

  • type => type of instance to start

Returned information:

  • instance_id => ID of the started instance

  • dns_name => DNS name of the started instance

  • availability_zone => Availability zone of the started instance

  • kernel_id => EC2 Kernel ID of the started instance

  • ramdisk_id => EC2 Ramdisk ID of the started instance

  • architecture => architecture (e.g. 386i, 64x) of the started instance



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
 
# File 'lib/help/state_transition_helper.rb', line 108

def launch_instance(ami_id, key_name, security_group_name, ec2_handler = nil, type = nil, availability_zone = nil)
  ec2_handler = ec2_handler() if ec2_handler == nil
  post_message("starting up instance to execute the script (AMI = #{ami_id}) ...")
  @logger.debug "start up AMI #{ami_id}"
  # find out the image architecture first
  image_props = ec2_handler.describe_images(:image_id => ami_id)
  architecture = image_props['imagesSet']['item'][0]['architecture']
  instance_type = "m1.small"
  #instance_type = "t1.micro"
  if architecture != "i386"
    instance_type = "m1.large"
  end
  instance_type = type if type != nil
  arch_log_msg = "Architecture of image #{ami_id} is #{architecture}. Use instance_type #{instance_type}."
  @logger.info arch_log_msg
  post_message(arch_log_msg)
  # now start it
  res = ec2_handler.run_instances(:image_id => ami_id,
    :security_group => security_group_name, :key_name => key_name,
    :instance_type => instance_type, 
    :availability_zone => availability_zone
  )
  instance_id = res['instancesSet']['item'][0]['instanceId']
  @logger.info "started instance #{instance_id}"
  post_message("Started instance #{instance_id}. wait until it is ready...")
  #availability_zone , key_name/group_name
  started = false
  while started == false
    sleep(5)
    res = ec2_handler.describe_instances(:instance_id => instance_id)
    state = res['reservationSet']['item'][0]['instancesSet']['item'][0]['instanceState']
    @logger.info "instance is in state #{state['name']} (#{state['code']})"
    if state['code'].to_i == 16
      started = true
      post_message("instance is up and running")
      dns_name = res['reservationSet']['item'][0]['instancesSet']['item'][0]['dnsName']
      availability_zone = res['reservationSet']['item'][0]['instancesSet']['item'][0]['placement']['availabilityZone']
      kernel_id = res['reservationSet']['item'][0]['instancesSet']['item'][0]['kernelId']
      ramdisk_id = res['reservationSet']['item'][0]['instancesSet']['item'][0]['ramdiskId']
      architecture = res['reservationSet']['item'][0]['instancesSet']['item'][0]['architecture']
      root_device_name = res['reservationSet']['item'][0]['instancesSet']['item'][0]['rootDeviceName']
    elsif state['code'].to_i != 0
      post_message("instance in state #{state['name']}")
      raise Exception.new('instance failed to start up')
    else
      post_message("instance still starting up...")
    end
  end
  return instance_id, dns_name, availability_zone, kernel_id, ramdisk_id, architecture, root_device_name
end

#local_decompress_and_dump_file_to_device(source_filename, target_device) ⇒ Object

decompress and dump a file using gunzip and dd



965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
 
# File 'lib/help/state_transition_helper.rb', line 965

def local_decompress_and_dump_file_to_device(source_filename, target_device)
  post_message("going to start decompressing and dumping file '#{source_filename}' to '#{target_device}' target device. This may take quite a time...")
  @logger.info "start decompressing and dumping '#{source_filename}' to '#{target_device}'"
  start_time = Time.new.to_i
  if remote_handler().tools_installed?("dd") && remote_handler().tools_installed?("gunzip")
    @logger.debug "use dd and gzip command line"
    status = remote_handler().local_decompress_and_dump(source_filename, target_device)
    if status == false
      @logger.error "failed to decompress and dump file"
      raise Exception.new("failed to decompress and dump file")
    end
  else
    @logger.error "dd and/or gunzip tools not installed"
    raise Exception.new("dd and/or gunzip tools not installed")
  end
  end_time = Time.new.to_i
  filesize = remote_handler().file_size(source_filename)
  @logger.info "decompress and dump file of #{filesize} took #{(end_time-start_time)}s"
  post_message("decompressing and dumping file of #{filesize} done (took #{end_time-start_time}s)")
end

#local_dump_and_compress_device_to_file(source_device, target_filename) ⇒ Object

dump and compress a device using dd and gzip



921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
 
# File 'lib/help/state_transition_helper.rb', line 921

def local_dump_and_compress_device_to_file(source_device, target_filename)
  post_message("going to start dumping and compressing source device '#{source_device}' to '#{target_filename}' file. This may take quite a time...")
  @logger.info "start dumping and compressing '#{source_device}' to '#{target_filename}'"
  start_time = Time.new.to_i
  if remote_handler().tools_installed?("dd") && remote_handler().tools_installed?("gzip")
    @logger.debug "use dd and gzip command line"
    status = remote_handler().local_dump_and_compress(source_device, target_filename)
    if status == false
      @logger.error "failed to dump and compress device"
      raise Exception.new("failed to dump and compress device")
    end
  else
    @logger.error "dd and/or gzip tools not installed"
    raise Exception.new("dd and/or gzip tools not installed")
  end
  end_time = Time.new.to_i
  filesize = remote_handler().file_size(target_filename)
  @logger.info "dump and compress to a #{filesize} file took #{(end_time-start_time)}s"
  post_message("dumping and compressing to a #{filesize} file done (took #{end_time-start_time}s)")
end

#local_dump_device_to_file(source_device, target_filename) ⇒ Object

dump a device using dd



943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
 
# File 'lib/help/state_transition_helper.rb', line 943

def local_dump_device_to_file(source_device, target_filename)
  post_message("going to start dumping source device '#{source_device}' to '#{target_filename}' file. This may take quite a time...")
  @logger.info "start dumping '#{source_device}' to '#{target_filename}'"
  start_time = Time.new.to_i
  if remote_handler().tools_installed?("dd")
    @logger.debug "use dd command line"
    status = remote_handler().local_dump(source_device, target_filename)
    if status == false
      @logger.error "failed to dump device"
      raise Exception.new("failed to dump device")
    end
  else
    @logger.error "dd tool not installed"
    raise Exception.new("dd tool not installed")
  end
  end_time = Time.new.to_i
  filesize = remote_handler().file_size(target_filename)
  @logger.info "dump to a #{filesize} file took #{(end_time-start_time)}s"
  post_message("dumping to a #{filesize} file done (took #{end_time-start_time}s)")
end

#local_dump_file_to_device(source_filename, target_device) ⇒ Object

dump a file using dd



987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
 
# File 'lib/help/state_transition_helper.rb', line 987

def local_dump_file_to_device(source_filename, target_device)
  post_message("going to start dumping file '#{source_filename}' to '#{target_device}' target device. This may take quite a time...")
  @logger.info "start dumping '#{source_filename}' to '#{target_device}'"
  start_time = Time.new.to_i
  if remote_handler().tools_installed?("dd")
    @logger.debug "use dd command line"
    status = remote_handler().local_dump(source_filename, target_device)
    if status == false
      @logger.error "failed to dump file"
      raise Exception.new("failed to dump file")
    end
  else
    @logger.error "dd tool not installed"
    raise Exception.new("dd tool not installed")
  end
  end_time = Time.new.to_i
  filesize = remote_handler().file_size(source_filename)
  @logger.info "dump file of #{filesize} took #{(end_time-start_time)}s"
  post_message("dumping file of #{filesize} done (took #{end_time-start_time}s)")
end

#mount_fs(mount_point, device) ⇒ Object 



632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
 
# File 'lib/help/state_transition_helper.rb', line 632

def mount_fs(mount_point, device)
  post_message("going to mount #{device} on #{mount_point}...")
  @logger.debug "mount #{device} on #{mount_point}"
  if !remote_handler.file_exists?(mount_point)
    post_message("creating mount point #{mount_point}...")
    @logger.debug "creating mount point #{mount_point}"
    remote_handler().mkdir(mount_point)
  end
  #XXX: detect new kernel that have /dev/xvdX device node instead of /dev/sdX
  if device =~ /\/dev\/sd[a-z]/
    if !remote_handler().file_exists?(device)
      post_message("'#{device}' device node not found, checking for new kernel support...")
      @logger.debug "'#{device}' device node not found, checking for new kernel support" 
      new_device = device.gsub('sd', 'xvd')
      if remote_handler().file_exists?(new_device)
        post_message("'#{new_device}' device node found")
        @logger.debug "'#{new_device}' device node found"
        device = new_device
      end
    end
  #elsif device =~/\/dev\/xvd[a-z]/
  end

  done = false
  timeout = 120
  while timeout > 0
    res = remote_handler().mount(device, mount_point)
    if remote_handler().drive_mounted?(mount_point)
      done = true
      timeout = 0
    end
    sleep(5)
    timeout -= 5
  end
  msg = ""
  if !done
    msg = "Failed to mount device '#{device}' to '#{mount_point}"
    @logger.error "#{msg}"
    raise Exception.new("device #{device} not mounted")
  else
    msg = "device #{device} successfully mounted" 
    @logger.info "#{msg}"
  end
  post_message("#{msg}")
end

#mount_fs_old(mount_point, device) ⇒ Object

Create a file-system on a given machine (assumes to be connected already). Input Parameters:

  • mount_point => directory to be mounted on the device

  • device => device used for mounting



609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
 
# File 'lib/help/state_transition_helper.rb', line 609

def mount_fs_old(mount_point, device)
  post_message("going to mount #{device} on #{mount_point}...")
  @logger.debug "mount #{device} on #{mount_point}"
  if !remote_handler.file_exists?(mount_point)
    remote_handler().mkdir(mount_point)
  end
  remote_handler().mount(device, mount_point)
  trials = 3
  mounted = false
  while trials > 0
    sleep(5) #give mount some time
    if remote_handler().drive_mounted?(mount_point)
      mounted = true
      break
    end
    trials -= trials
  end
  if !mounted
    raise Exception.new("drive #{mount_point} not mounted")
  end
  post_message("mount successful")
end

#register_snapshot(snapshot_id, name, root_device_name, description, kernel_id, ramdisk_id, architecture) ⇒ Object

Registers a snapshot as EBS-booted AMI. Input Parameters:

  • snapshot_id => EC2 Snapshot ID used to be used

  • name => name of the AMI to be created

  • root_device_name => Root device name (e.g. /dev/sdj) to be used for AMI registration

  • description => description of the AMI to be created

  • kernel_id => EC2 Kernel ID to be used for AMI registration

  • ramdisk_id => EC2 Ramdisk ID to be used for AMI registration

  • architecture => architecture (e.g. 386i, 64x) to be used for AMI registration

Returns:

  • image_id => ID of the AMI created and registered



536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
 
# File 'lib/help/state_transition_helper.rb', line 536

def register_snapshot(snapshot_id, name, root_device_name, description, kernel_id, ramdisk_id, architecture)
  post_message("going to register snapshot #{snapshot_id}...")
  @logger.debug "register snapshot #{snapshot_id} as #{name} using AKI '#{kernel_id}' ARI '#{ramdisk_id}' and arch '#{architecture}'"
  res = ec2_handler().register_image_updated(:snapshot_id => snapshot_id,
    :kernel_id => kernel_id, :architecture => architecture,
    :root_device_name => root_device_name,
    :description => description, :name => name,
    :ramdisk_id => ramdisk_id
  )
  @logger.debug "result of registration = #{res.inspect}"
  image_id = res['imageId']
  @logger.info "resulting image_id = #{image_id}"
  post_message("snapshot #{snapshot_id} successfully registered as AMI #{image_id} ")
  return image_id
end

#remote_copy(user_name, keyname, source_dir, dest_machine, dest_user, dest_dir) ⇒ Object 



1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
 
# File 'lib/help/state_transition_helper.rb', line 1022

def remote_copy(user_name, keyname, source_dir, dest_machine, dest_user, dest_dir)
  post_message("going to remote copy all files from volume. This may take some time...")
  @logger.info "going to remote copy all files from volume. This may take some time..."
  key_path_candidates = ["/#{user_name}/.ssh/", "/home/#{user_name}/.ssh/"]
  start_time = Time.new.to_i
  key_path_candidates.each() {|key_path|
    key_file = "#{key_path}#{keyname}.pem"
    if remote_handler().file_exists?(key_path)
      if remote_handler().tools_installed?("rsync")
        @logger.debug "use rsync command on #{key_file}"
        remote_handler().remote_rsync(key_file, source_dir, dest_machine, dest_user, dest_dir)
      else
        @logger.debug "use scp command #{key_file}"
        remote_handler().scp(key_file, source_dir, dest_machine, dest_user, dest_dir)
      end
      break
    end
  }
  end_time = Time.new.to_i
  @logger.info "remote copy operation took #{(end_time-start_time)}s"
  post_message("remote copy operation done (took #{end_time-start_time}s)")
end

#remote_copy_old(user_name, keyname, source_dir, dest_machine, dest_dir) ⇒ Object 



901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
 
# File 'lib/help/state_transition_helper.rb', line 901

def remote_copy_old(user_name, keyname, source_dir, dest_machine, dest_dir)
  post_message("going to remote copy all files from volume. This may take some time...")
  key_path_candidates = ["/#{user_name}/.ssh/", "/home/#{user_name}/.ssh/"]
  key_path_candidates.each() {|key_path|
    key_file = "#{key_path}#{keyname}.pem"
    if remote_handler().file_exists?(key_path)
      if remote_handler().tools_installed?("rsync")
        @logger.debug "use rsync command on #{key_file}"
        remote_handler().remote_rsync(key_file, source_dir, dest_machine, dest_dir)
      else
        @logger.debug "use scp command #{key_file}"
        remote_handler().scp(key_file, source_dir, dest_machine, dest_dir)
      end
      break
    end
  }
  post_message("remote copy operation done")
end

#remote_handler ⇒ Object

setting/retrieving handlers



1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
 
# File 'lib/help/state_transition_helper.rb', line 1311

def remote_handler()
  if @remote_handler == nil
    if @context[:remote_command_handler] == nil
      @context[:remote_command_handler] = RemoteCommandHandler.new
    else
      @remote_handler = @context[:remote_command_handler]
    end
  end
  @remote_handler
end

#remote_handler=(remote_handler) ⇒ Object 



1322
1323
1324
 
# File 'lib/help/state_transition_helper.rb', line 1322

def remote_handler=(remote_handler)
  @remote_handler = remote_handler
end

#retrieve_instances ⇒ Object 



313
314
315
316
317
318
319
320
321
322
323
 
# File 'lib/help/state_transition_helper.rb', line 313

def retrieve_instances()
  @context[:script].post_message("going to retrieve all instances...")
  inst = @context[:ec2_api_handler].describe_instances()
  n = 0
  unless inst['reservationSet'] == nil
    n = inst['reservationSet']['item'].size
  end
  @context[:script].post_message("found #{n} instances")
  @logger.info("found #{n} instances")
  @context[:ec2_instances] = inst
end

#retrieve_security_groups ⇒ Object 



301
302
303
304
305
306
307
308
309
310
311
 
# File 'lib/help/state_transition_helper.rb', line 301

def retrieve_security_groups()
  @context[:script].post_message("going to retrieve security groups...")
  sgs = @context[:ec2_api_handler].describe_security_groups()
  n = 0
  unless sgs['securityGroupInfo'] == nil
    n = sgs['securityGroupInfo']['item'].size
  end
  @context[:script].post_message("found #{n} security groups")
  @logger.info("found #{n} security groups")
  @context[:security_groups] = sgs
end

#shut_down_instance(instance_id) ⇒ Object

Shuts down an instance. Input Parameters:

  • instance_id => ID of the instance to be shut down



245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
 
# File 'lib/help/state_transition_helper.rb', line 245

def shut_down_instance(instance_id)
  post_message("going to shut down the temporary instance #{instance_id}...")
  @logger.debug "shutdown instance #{instance_id}"
  res = ec2_handler().terminate_instances(:instance_id => instance_id)
  done = false
  while done == false
    sleep(5)
    res = ec2_handler().describe_instances(:instance_id => instance_id)
    state = res['reservationSet']['item'][0]['instancesSet']['item'][0]['instanceState']
    @logger.debug "instance in state #{state['name']} (#{state['code']})"
    if state['code'].to_i == 48
      done = true
    elsif state['code'].to_i != 32
      raise Exception.new('instance failed to shut down')
    end
  end
  post_message("instance #{instance_id} is terminated")
end

#snapshot_accessible(snapshot_id) ⇒ Object

Is Snapshot accessible?



506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
 
# File 'lib/help/state_transition_helper.rb', line 506

def snapshot_accessible(snapshot_id)
  post_message("checking snapshot '#{snapshot_id}' accessibility...")
  @logger.info("checking snapshot '#{snapshot_id}' accessibility...")
  begin
    ec2_handler().describe_snapshots(:snapshot_id => snapshot_id)
  rescue Exception => e
    if e.to_str =~ /does not exist/ && e.to_str =~ /#{snapshot_id}/
      post_message("'#{snapshot_id}' NOT accessible")
      @logger.info("'#{snapshot_id}' NOT accessible")
      return false
    else
      raise e
    end
 end
 post_message("'#{snapshot_id}' accessible")
 @logger.info("'#{snapshot_id}' accessible")
 return true
end

#start_instance(instance_id, timeout = 240) ⇒ Object

Start an instance Input Paramters:

  • instance_id => ID of the instance to start

  • timeout => a timeout for waiting instance to start to avoid infinite loop (default set to 4m)

Return Parameters (Array):

  • instance_id

  • public_dns_name



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
 
# File 'lib/help/state_transition_helper.rb', line 166

def start_instance(instance_id, timeout = 240)
  dns_name = ""
  post_message("going to start instance '#{instance_id}'...")
  res = ec2_handler().describe_instances(:instance_id => instance_id)
  state = res['reservationSet']['item'][0]['instancesSet']['item'][0]['instanceState']
  if state['code'].to_i == 16
    dns_name = res['reservationSet']['item'][0]['instancesSet']['item'][0]['dnsName'] 
    msg = "instance '#{instance_id}' already started"
    @logger.warn "#{msg}"
    post_message("#{msg}")
    done = true
  else
    @logger.debug "start instance #{instance_id}"
    ec2_handler().start_instances(:instance_id => instance_id)
  end
  while timeout > 1 && !done
    res = ec2_handler().describe_instances(:instance_id => instance_id)
    state = res['reservationSet']['item'][0]['instancesSet']['item'][0]['instanceState']
    @logger.debug "instance in state '#{state['name']}' (#{state['code']})"
    if state['code'].to_i == 16 
      done = true
      timeout = 0
      dns_name = res['reservationSet']['item'][0]['instancesSet']['item'][0]['dnsName']
    elsif state['code'].to_i != 0 
      done = false
      timeout = 0
      msg = "instance in state '#{state['name']}'"
      @logger.error "#{msg}"
      post_message("#{msg}")
    end
    sleep(5)
    timeout -= 5
  end
  msg = ""
  if !done
    msg = "Failed to start instance '#{instance_id}"
    @logger.error "#{msg}"
    raise Exception.new("Unable to start instance '#{instance_id}'}")
  else
    msg = "'#{instance_id}' successfully started" 
    @logger.info "#{msg}" 
  end
  post_message("#{msg}")
  return instance_id, dns_name
end

#stop_instance(instance_id, timeout = 240) ⇒ Object

Stop an instance. Input Parameters:

  • instance_id => ID of the instance to be shut down



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
 
# File 'lib/help/state_transition_helper.rb', line 267

def stop_instance(instance_id, timeout = 240)
  post_message("going to stop the temporary instance #{instance_id}...")
  @logger.debug "stop instance #{instance_id}"
  res = ec2_handler().stop_instances(:instance_id => instance_id)
  done = false
  while timeout > 0 && !done
    res = ec2_handler().describe_instances(:instance_id => instance_id)
    state = res['reservationSet']['item'][0]['instancesSet']['item'][0]['instanceState']
    @logger.debug "instance in state '#{state['name']}' (#{state['code']})"
    if state['code'].to_i == 80 
      done = true
      timeout = 0
    elsif state['code'].to_i != 64 
      done = false
      timeout = 0
      msg = "instance in state '#{state['name']}'"
      @logger.error "#{msg}"
      post_message("#{msg}")
    end
    sleep(5)
    timeout -= 5
  end
  msg = ""
  if !done
    msg = "Failed to stop instance '#{instance_id}"
    @logger.error "#{msg}"
    raise Exception.new("Unable to stop instance '#{instance_id}'}")
  else
    msg = "'#{instance_id}' successfully stopped" 
    @logger.info "#{msg}" 
  end
  post_message("#{msg}")
end

#unmount_fs(mount_point) ⇒ Object

Unmount a drive Input Parameters:

  • mount_point => directory to be unmounted



681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
 
# File 'lib/help/state_transition_helper.rb', line 681

def unmount_fs(mount_point)
  post_message("going to unmount #{mount_point}...")
  @logger.debug "unmount #{mount_point}"

  done = false
  timeout = 120
  while timeout > 0
    res = remote_handler().umount(mount_point)
    if !remote_handler().drive_mounted?(mount_point)
      done = true
      timeout = 0
    end
    sleep(5)
    timeout -= 5
  end
  msg = ""
  if !done
    msg = "Failed to umount '#{mount_point}'"
    @logger.error "#{msg}"
    raise Exception.new("#{mount_point} still mounted")
  else
    msg = "#{mount_point} successfully mounted" 
    @logger.info "#{msg}"
  end
  post_message("#{msg}")
end

#upload_file(ip, user, key_data, file, target_file) ⇒ Object 



1045
1046
1047
1048
 
# File 'lib/help/state_transition_helper.rb', line 1045

def upload_file(ip, user, key_data, file, target_file)
  post_message("going to upload #{file} to #{user}@#{ip}:#{target_file}")
  remote_handler().upload(ip, user, key_data, file, target_file)
end

#zip_volume(source_dir, zip_file_dest, zip_file_name) ⇒ Object

Zips all files on a mounted-directory into a file Input Parameters:

  • source_dir => where to copy from

  • zip_file_dest => path where the zip-file should be stored

# zip_file_name => name of the zip file (without .zip suffix)



891
892
893
894
895
896
897
898
899
 
# File 'lib/help/state_transition_helper.rb', line 891

def zip_volume(source_dir, zip_file_dest, zip_file_name)
  post_message("going to zip the EBS volume")
  stderr = remote_handler().zip(source_dir, zip_file_dest+"/"+zip_file_name)
  if stderr.size > 0
    @logger.info("zip operation generated error and might not be complete. output: #{stderr.join("\n")}")
    post_message("zip operation generated error and might not be complete. output: #{stderr.join("\n")}")
  end
  post_message("EBS volume successfully zipped")
end