Module: SnapEbs::Snapshotter

Included in:
SnapEbs
Defined in:
lib/snap_ebs/snapshotter.rb

Constant Summary collapse

AWS_INSTANCE_ID_URL = 
'http://169.254.169.254/latest/dynamic/instance-identity/document'

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#compute ⇒ Object

Get the Fog compute object. When --mock is given, Fog.mock! is called and information normally auto-detected from AWS is injected with dummy values to circumvent the lazy loaders.



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# File 'lib/snap_ebs/snapshotter.rb', line 29

def compute
  require 'fog/aws'
  if options[:mock]
    Fog.mock!
    @region = 'us-east-1'
    @instance_id = 'i-deadbeef'
    @instance_name = 'totally-not-the-cia'
  end

  @compute ||= Fog::Compute.new({
    :aws_access_key_id => access_key,
    :aws_secret_access_key => secret_key,
    :region => region,
    :provider => "AWS"
  }) 
end

Instance Method Details

#take_snapshots ⇒ Object

Takes snapshots of attached volumes (optionally filtering by volumes mounted to the given directories)



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# File 'lib/snap_ebs/snapshotter.rb', line 10

def take_snapshots
  system 'sync'
  attached_volumes.collect do |vol|
    dir = device_to_directory device_name vol
    fs_freeze dir if options[:fs_freeze]
    next unless should_snap vol
    logger.debug "Snapping #{vol.id}"
    snapshot = compute.snapshots.new
    snapshot.volume_id = vol.id
    snapshot.description = snapshot_name(vol)
    snapshot.save
    snapshot
    fs_unfreeze dir if options[:fs_freeze]
  end
end