prometheus.Handler is deprecated according to the godoc for the package so instead we're using promhttp. Additionally, we are exposing the Registry that metrics is using so other plugins that are not inside of coredns can read the registry. Otherwise, if we kept using the Default one, there's no way to access that from outside of the coredns repo since it is vendored.
gRPC-Go
The Go implementation of gRPC: A high performance, open source, general RPC framework that puts mobile and HTTP/2 first. For more information see the gRPC Quick Start: Go guide.
Installation
To install this package, you need to install Go and setup your Go workspace on your computer. The simplest way to install the library is to run:
$ go get -u google.golang.org/grpc
Prerequisites
This requires Go 1.7 or later.
Constraints
The grpc package should only depend on standard Go packages and a small number of exceptions. If your contribution introduces new dependencies which are NOT in the list, you need a discussion with gRPC-Go authors and consultants.
Documentation
See API documentation for package and API descriptions and find examples in the examples directory.
Performance
See the current benchmarks for some of the languages supported in this dashboard.
Status
General Availability Google Cloud Platform Launch Stages.
FAQ
Compiling error, undefined: grpc.SupportPackageIsVersion
Please update proto package, gRPC package and rebuild the proto files:
go get -u github.com/golang/protobuf/{proto,protoc-gen-go}go get -u google.golang.org/grpcprotoc --go_out=plugins=grpc:. *.proto