outbound: add request timeout fields #243
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This branch adds fields to the `OutboundPolicies` API messages for configuring request timeouts. The `HttpRoute.Rule` and `GrpcRoute.Rule` messages now contain a `requestTimeout` field, which contains a `Duration` for a request timeout for that rule. In addition, the `RouteBackend` messages also contain a `requestTimeout` field, which configures a duration for requests dispatched to that specific backend. All new fields have comments describing their intended semantics.
adleong
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alpeb
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olix0r
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hawkw
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PR #10969 adds support for the GEP-1742 `timeouts` field to the HTTPRoute CRD. This branch implements actual support for these fields in the policy controller. The timeout fields are now read and used to set the timeout fields added to the proxy-api in linkerd/linkerd2-proxy-api#243. In addition, I've added code to ensure that the timeout fields are parsed correctly when a JSON manifest is deserialized. The current implementation represents timeouts in the bindings as a Rust `std::time::Duration` type. `Duration` does implement `serde::Deserialize` and `serde::Serialize`, but its serialization implementation attempts to (de)serialize it as a struct consisting of a number of seconds and a number of subsecond nanoseconds. The timeout fields are instead supposed to be represented as strings in the Go standard library's `time.ParseDuration` format. Therefore, I've added a newtype which wraps the Rust `std::time::Duration` and implements the same parsing logic as Go. Eventually, I'd like to upstream the implementation of this to `kube-rs`; see kube-rs/kube#1222 for details. Depends on #10969 Depends on linkerd/linkerd2-proxy-api#243 Signed-off-by: Eliza Weisman <eliza@buoyant.io>
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This branch adds fields to the
OutboundPoliciesAPI messages for configuring request timeouts. TheHttpRoute.RuleandGrpcRoute.Rulemessages now contain arequestTimeoutfield, which contains aDurationfor a request timeout for that rule. In addition, theRouteBackendmessages also contain arequestTimeoutfield, which configures a duration for requests dispatched to that specific backend. All new fields have comments describing their intended semantics.