Stateless grpc connection#19
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shiroyasha wants to merge 6 commits into
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radwo
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Apr 7, 2022
| Util.Grpc.Client.new(:billing_service, "localhost:50051", BillingApi.Stub) | ||
| ]) | ||
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| 3. User Grpc.do to communicate with your upstream services: |
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| 3. User Grpc.do to communicate with your upstream services: | |
| 3. User Grpc.call to communicate with your upstream services: |
| 2. Sends the RPC request | ||
| 3. Waits for the result, or times out | ||
| """ | ||
| @spec rpc(client_name(), GRPC.Channel.t(), function()) :: |
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| @spec rpc(client_name(), GRPC.Channel.t(), function()) :: | |
| @spec call(client_name(), GRPC.Channel.t(), function()) :: |
mattrym
reviewed
Apr 7, 2022
| end | ||
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| def find_client(name) do | ||
| Agent.get(__MODULE__, fn state -> Map.fetch!(state, name) end) |
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Minor thing: Agent.get/2 callback is executed internally by Agent process, and Map.fetch! raises unhandled exception in case of failure. Calling find_client/1 with unknown name will crash the State, not sure if that's by design?
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Good point. I'll have to fix it ✍️
radwo
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Apr 10, 2022
| {:ok, result} | ||
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| {:error, err} -> | ||
| inc(rpc, "response.error.count") |
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Sometimes we send:ok response, and an error status is present in the status field. Can we check if this field is there and log accordingly?
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Disclaimer: This is still a draft, tests, and code quality are still pretty poor.
There are several errors that still need to be caught.
I'm attaching you to check out the public API of the clients.
edit: I can't attach @mattrym for some reason. I'm pinging you directly.