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envoyproxy / envoy

Cloud-native high-performance edge/middle/service proxy
https://www.envoyproxy.io
Apache License 2.0
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event emission: implement generic event reporting gRPC client #10966

Open junr03 opened 4 years ago

junr03 commented 4 years ago

10407 added proto definitions for a generic event reporting service. This issue tracks implementation details.

  1. Using a bidi stream where Envoy updates the emission stream based on responses from the sink gRPC service allows for in-band flexibility. Both for:
    • The types of events that Envoy emits, e.g, filter to only health check events.
    • The shape of the events emitted, e.g, configure the metrics events to report counters as deltas.
  2. The base implementation should account for generic logic, such as:
    • Stream establishment, and callbacks for custom logic over messages in the stream
    • Handling versioning of in-band config updates so that the server-side gRPC service is aware of the configuration of the data stream -- useful when the shape of the data can change via in-band config updates.

Relates to https://github.com/envoyproxy/envoy/issues/8970 and https://github.com/envoyproxy/envoy/issues/10968

junr03 commented 4 years ago

cc @baranov1ch