Class: VCSToolkit::Utils::Sync

Inherits:
Object
  • Object
show all
Defined in:
lib/vcs_toolkit/utils/sync.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source_store, source_label_name, destination_store, destination_label_name) ⇒ Sync

Returns a new instance of Sync.



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# File 'lib/vcs_toolkit/utils/sync.rb', line 9

def initialize(source_store, source_label_name, destination_store, destination_label_name)
  @source_store      = source_store
  @source_label      = source_store.fetch source_label_name
  @destination_store = destination_store
  @destination_label = destination_store.fetch destination_label_name
end

Class Method Details

.sync(*args) ⇒ Object 



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# File 'lib/vcs_toolkit/utils/sync.rb', line 5

def self.sync(*args)
  new(*args).sync
end

Instance Method Details

#sync ⇒ Object

Syncs source history starting at ‘source_label` to `destination_store` starting at `destination_label`.

Raises:



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# File 'lib/vcs_toolkit/utils/sync.rb', line 20

def sync
  raise 'Nothing to sync' if @source_label.reference_id.nil?

  destination_commit_id = @destination_label.reference_id
  raise DivergedHistoriesError unless destination_commit_id.nil? or @source_store.key? destination_commit_id

  source_commit   = @source_store.fetch @source_label.reference_id
  commits_to_push = source_commit.history_diff(@source_store) do |commit|
    # Do not follow parent references for commits
    # that are already on the remote.
    @destination_store.key? commit.id
  end

  commits_to_push.each do |commit|
    transfer_commit commit
  end

  # Now that every object is transferred change the destination label
  @destination_label.reference_id = source_commit.id
  @destination_store.store @destination_label.id, @destination_label
end