Class: VCAP::Services::Base::SnapshotV2::BaseRollbackSnapshotJob

Inherits:
SnapshotJob show all
Defined in:
lib/base/snapshot_v2/snapshot.rb

Instance Attribute Summary collapse

Attributes inherited from SnapshotJob

#name, #snapshot_id

Instance Method Summary collapse

Methods inherited from SnapshotJob

#cleanup, #create_lock, #fmt_error, #get_dump_path, #handle_error, #init_worker_logger, #initialize, #parse_config, queue_lookup_key, #required_options, select_queue

Constructor Details

This class inherits a constructor from VCAP::Services::Base::SnapshotV2::SnapshotJob

Instance Attribute Details

#manifest ⇒ Object (readonly)

Returns the value of attribute manifest.



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# File 'lib/base/snapshot_v2/snapshot.rb', line 190

def manifest
  @manifest
end

#snapshot_files ⇒ Object (readonly)

Returns the value of attribute snapshot_files.



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# File 'lib/base/snapshot_v2/snapshot.rb', line 190

def snapshot_files
  @snapshot_files
end

Instance Method Details

#perform ⇒ Object

workflow template Subclass implement execute method which returns true for a successful rollback



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# File 'lib/base/snapshot_v2/snapshot.rb', line 193

def perform
  begin
    required_options :service_id, :snapshot_id
    @name = options["service_id"]
    @snapshot_id = options["snapshot_id"]
    @logger.info("Launch job: #{self.class} for #{name}")

    lock = create_lock

    @snapshot_files = []
    lock.lock do
      # extract origin files from package
      dump_path = get_dump_path(name, snapshot_id)
      package_file = "#{snapshot_id}.zip"
      package = Package.load(File.join(dump_path, package_file))
      @manifest = package.manifest
      @snapshot_files = package.unpack(dump_path)
      @logger.debug("Unpack files from #{package_file}: #{@snapshot_files}")
      raise "Package file doesn't contain snapshot file." if @snapshot_files.empty?

      result = execute
      @logger.info("Results of rollback snapshot: #{result}")

      completed(Yajl::Encoder.encode({:result => :ok}))
      @logger.info("Complete job: #{self.class} for #{name}")
    end
  rescue => e
    handle_error(e)
  ensure
    set_status({:complete_time => Time.now.to_s})
    @snapshot_files.each{|f| File.delete(f) if File.exists? f} if @snapshot_files
  end
end