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39 lines
1.6 KiB
39 lines
1.6 KiB
6 years ago
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syntax = "proto3";
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package udpa.service.orca.v1;
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option java_outer_classname = "OrcaProto";
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option java_multiple_files = true;
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option java_package = "io.envoyproxy.udpa.service.orca.v1";
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option go_package = "v1";
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import "udpa/data/orca/v1/orca_load_report.proto";
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import "google/protobuf/duration.proto";
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import "validate/validate.proto";
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// See section `Out-of-band (OOB) reporting` of the design document in
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// :ref:`https://github.com/envoyproxy/envoy/issues/6614`.
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// Out-of-band (OOB) load reporting service for the additional load reporting
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// agent that does not sit in the request path. Reports are periodically sampled
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// with sufficient frequency to provide temporal association with requests.
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// OOB reporting compensates the limitation of in-band reporting in revealing
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// costs for backends that do not provide a steady stream of telemetry such as
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// long running stream operations and zero QPS services. This is a server
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// streaming service, client needs to terminate current RPC and initiate
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// a new call to change backend reporting frequency.
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service OpenRcaService {
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rpc StreamCoreMetrics(OrcaLoadReportRequest) returns (stream udpa.data.orca.v1.OrcaLoadReport);
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}
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message OrcaLoadReportRequest {
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// Interval for generating Open RCA core metric responses.
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google.protobuf.Duration report_interval = 1;
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// Request costs to collect. If this is empty, all known requests costs tracked by
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// the load reporting agent will be returned. This provides an opportunity for
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// the client to selectively obtain a subset of tracked costs.
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repeated string request_cost_names = 2;
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}
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