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GitHub - peburrows/kane: Google Pub/Sub client for Elixir
Google Pub/Sub client for Elixir. Contribute to peburrows/kane development by creating an account on GitHub.
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GitHub - peburrows/kane: Google Pub/Sub client for Elixir

GitHub - peburrows/kane: Google Pub/Sub client for Elixir

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Kane

Kane. Citizen Kane. Charles Foster Kane, to be exact, Publisher extraordinaire. Rosebud.

Kane is for publishing and subscribing to topics using Google Cloud Pub/Sub.

Installation

  1. Add Kane to your list of dependencies in mix.exs:
def deps do
  [{:kane, "~> 0.9.0"}]
end
  1. Configure Goth (Kane's underlying token storage and retrieval library) with your Google JSON credentials.

Usage

Pull, process and acknowledge messages via a pre-existing subscription:

{:ok, token} = Goth.fetch(MyApp.Goth)

kane = %Kane{
  project_id: my_app_gcp_credentials["project_id"],
  token: token
}

subscription = %Kane.Subscription{
                  name: "my-sub",
                  topic: %Kane.Topic{
                    name: "my-topic"
                  }
                }

{:ok, messages} = Kane.Subscription.pull(kane, subscription)

Enum.each messages, fn(mess)->
  process_message(mess)
end

# acknowledge message receipt in bulk
Kane.Subscription.ack(kane, subscription, messages)

Send message via pre-existing subscription:

topic   = %Kane.Topic{name: "my-topic"}
message = %Kane.Message{data: %{"hello": "world"}, attributes: %{"random" => "attr"}}

result  = Kane.Message.publish(kane, message, topic)

case result do
  {:ok, _return}    -> IO.puts("It worked!")
  {:error, _reason} -> IO.puts("Should we try again?")
end

Hints:

For more details, see the documentation.

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