xds/

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Published: Apr 6, 2020 License: Apache-2.0

README

gRPC xDS example

xDS is the protocol initially used by Envoy, that is evolving into a universal data plan API for service mesh.

The xDS example is a Hello World client/server capable of being configured with the XDS management protocol. Out-of-the-box it behaves the same as our other hello world example. The server replies with responses including its hostname.

Note that xDS support is incomplete and experimental, with limited compatibility.

xDS environment setup

This example doesn't include instuctions to setup xDS environment. Please refer to documentation specific for your xDS management server.

The client also needs a bootstrap file. See gRFC A27 for the bootstrap format.

The client

The client application needs to import the xDS package to install the resolver and balancers:

_ "google.golang.org/grpc/xds/experimental" // To install the xds resolvers and balancers.

Then, use xds-experimental target scheme for the ClientConn.

$ export GRPC_XDS_BOOTSTRAP=/path/to/bootstrap.json
$ go run client/main.go "xDS world" xds-experimental:///target_service

Directories

Path Synopsis
Package main implements a client for Greeter service.
Package main implements a client for Greeter service.
Package main starts Greeter service that will response with the hostname.
Package main starts Greeter service that will response with the hostname.

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