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author | David Heinemeier Hansson <david@loudthinking.com> | 2015-07-04 21:30:48 +0200 |
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committer | David Heinemeier Hansson <david@loudthinking.com> | 2015-07-04 21:30:48 +0200 |
commit | 0de65cf2d8860377d45020a83866073c5fec188c (patch) | |
tree | d39b559162936fd79049595d69098fd7712a8fe3 /lib/action_cable/channel/streams.rb | |
parent | 9886a995f5f0b32d0d400074c48221cb0f6b911e (diff) | |
parent | 5de01033150b70982f23a42670c55348a7371c4b (diff) | |
download | rails-0de65cf2d8860377d45020a83866073c5fec188c.tar.gz rails-0de65cf2d8860377d45020a83866073c5fec188c.tar.bz2 rails-0de65cf2d8860377d45020a83866073c5fec188c.zip |
Merge branch 'master' of github.com:basecamp/action_cable
Diffstat (limited to 'lib/action_cable/channel/streams.rb')
-rw-r--r-- | lib/action_cable/channel/streams.rb | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/lib/action_cable/channel/streams.rb b/lib/action_cable/channel/streams.rb new file mode 100644 index 0000000000..3eac776e61 --- /dev/null +++ b/lib/action_cable/channel/streams.rb @@ -0,0 +1,40 @@ +module ActionCable + module Channel + module Streams + extend ActiveSupport::Concern + + included do + on_unsubscribe :stop_all_streams + end + + def stream_from(broadcasting, callback = nil) + callback ||= default_stream_callback(broadcasting) + + streams << [ broadcasting, callback ] + pubsub.subscribe broadcasting, &callback + + logger.info "#{channel_name} is streaming from #{broadcasting}" + end + + def stop_all_streams + streams.each do |broadcasting, callback| + pubsub.unsubscribe_proc broadcasting, callback + logger.info "#{channel_name} stopped streaming from #{broadcasting}" + end + end + + private + delegate :pubsub, to: :connection + + def streams + @_streams ||= [] + end + + def default_stream_callback(broadcasting) + -> (message) do + transmit ActiveSupport::JSON.decode(message), via: "streamed from #{broadcasting}" + end + end + end + end +end |