census: add per call latency metric #9906
Merged
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This PR adds a new measure to calculate time taken by gRPC to complete an RPC (i.e
grpc.io/client/api_latency
).It also enables corresponding view
GRPC_CLIENT_API_LATENCY_VIEW
forgrpc-gcp-observability
.Note: New measure and view are defined in
grpc-census
temporarily. This will be moved to opencensus-java repository later.CC @ejona86 @sanjaypujare