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Refactor http calls to support message payloads #646

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merged 3 commits into from
Dec 6, 2023

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emcfarlane
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@emcfarlane emcfarlane commented Dec 4, 2023

To enable client retries, the http calls now operates directly on message payloads instead of relying solely on io.Writers. This refactor replaces write operations with send operations at message boundaries. It introduces a new interface, messagePayload, implemented by *bytes.Readers and *envelopes, enabling them to adopt sender operations.

Changes Made:

  • A new interface, messagePayload, implemented by *bytes.Reader and *envelope, allowing for adoption of sender operations.
  • A new interface, messageSender, implemented by *duplexHTTPCall, which acts on messagePayloads to send the message.
  • An adapter writeSender for http.ResponseWriter to implement messageSender via converting send payloads to write operations.
  • Replaced write operations with send operations at message boundaries for handling message payloads.

Objective:

The goal of this refactor is to facilitate client retries by directly manipulating message payloads rather than relying solely on io.Writers. The messagePayload interface is a readable, seekable and sized payload which allows it to be replayed.

This PR is part of the fix for #609 . It implements the groundwork for the handling of message payloads.

To enable client retries, the system now operates directly on message
payloads instead of relying solely on io.Writers. This refacotr replaces
write operations with send operations at message boundries. It
introducces a new inteface, messagePayload, implemented by
*bytes.Readers and *envelopes, enabling them to adopt sender operations.
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@jhump jhump left a comment

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Nice! I left some comments, but they are mostly nits. LGTM

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@jhump jhump merged commit cb84690 into connectrpc:main Dec 6, 2023
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@emcfarlane emcfarlane deleted the ed/sender branch December 6, 2023 14:49
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2 participants