xds: Add Client ExtAuthzFilter #12898
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Part 4 of the client-side ext_authz filter. Sits on top of the client interceptor PR. Adds ExtAuthzFilter, the Filter / Filter.Provider implementation for type URL envoy.extensions.filters.http.ext_authz.v3.ExtAuthz. It parses top-level and per-route (ExtAuthzPerRoute) configurations, manages cached gRPC channels to the authz server via CachedChannelManager, and builds ExtAuthzClientInterceptor instances in buildClientInterceptor(). Registers the provider in FilterRegistry so the xDS client can automatically instantiate it when parsing HttpConnectionManager configurations. Guarded behind GRPC_EXPERIMENTAL_XDS_EXT_AUTHZ_ON_CLIENT. test: authz-client-filter build improve: client-side test improvements
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Part 4 of the client-side ext_authz filter. Sits on top of the client interceptor PR.
Adds ExtAuthzFilter, the Filter / Filter.Provider
implementation for type URL
envoy.extensions.filters.http.ext_authz.v3.ExtAuthz. It parses top-level and per-route (ExtAuthzPerRoute) configurations, manages cached gRPC channels to the authz server via CachedChannelManager, and builds ExtAuthzClientInterceptor instances in
buildClientInterceptor().
Registers the provider in FilterRegistry so the xDS client can automatically instantiate it when parsing HttpConnectionManager configurations.
Guarded behind GRPC_EXPERIMENTAL_XDS_EXT_AUTHZ_ON_CLIENT.