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| -rw-r--r-- | guides/source/active_support_instrumentation.md | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/guides/source/active_support_instrumentation.md b/guides/source/active_support_instrumentation.md index 89e0e3afa8..d7dbc5cea8 100644 --- a/guides/source/active_support_instrumentation.md +++ b/guides/source/active_support_instrumentation.md @@ -692,5 +692,16 @@ ActiveSupport::Notifications.subscribe "my.custom.event" do |name, started, fini end ``` +You also have the option to call instrument without passing a block. This lets you leverage the +instrumentation infrastructure for other messaging uses. + +```ruby +ActiveSupport::Notifications.instrument "my.custom.event", this: :data + +ActiveSupport::Notifications.subscribe "my.custom.event" do |name, started, finished, unique_id, data| + puts data.inspect # {:this=>:data} +end +``` + You should follow Rails conventions when defining your own events. The format is: `event.library`. If your application is sending Tweets, you should create an event named `tweet.twitter`. |