client side load balancing in grpc python

[animesh sharma]

Hi Team,

I was trying to implement client side load balancing in gRPC. I know how to do it in Java but not able to find appropriate document describing how to do the same in python, below is my Java code.

```

NameResolver.Factory nameResolverFactory = new MultiAddressNameResolverFactory( new InetSocketAddress("localhost", 10000), new InetSocketAddress("localhost", 10001), new InetSocketAddress("localhost", 10002) ); ManagedChannel channel = ManagedChannelBuilder.forTarget("service") .nameResolverFactory(nameResolverFactory) .defaultLoadBalancingPolicy("round_robin") .usePlaintext() .build();

```

In python I know how to connect to one server but not a list of gRPC servers

channel = grpc.insecure_channel('localhost:10000')

can anyone kindly guide me or point me to a document on how to implement the same?

Thanks,

Animesh

[Easwar Swaminathan]

You can find gRPC Python documentation here: https://grpc.github.io/grpc/python/ and a basic tutorial here: https://grpc.io/docs/languages/python/.

[+Richard Belleville, +Lidi Zheng] for specific load balancing API in Python.

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[Lidi Zheng]

Hi,

You are using the custom resolver API for Java. This API is available only in limited gRPC languages, like Java/Go, but not Core-based languages, like C++/Python/Ruby/C#/ObjC/PHP.

You may need to inject the candidate addresses to DNS backends. Many DNS providers / cloud providers offer this feature.

Locally, depending on the OS, there should be ways to define name -> IP resolutions, like /etc/hosts.