Balancer

The grpc_proxy.service contains classes:

• grpc_proxy.service.LoadBalancer

• grpc_proxy.service.RandomChoice

• grpc_proxy.service.PickFirst

class grpc_proxy.balancer.GrpcProxyNoHostError(*args: Any, **kwargs: Any)

class grpc_proxy.balancer.LoadBalancer(service, method, adresses=[], options=[], metadata=None)

Base class for all load nalancer classes.

sent(request, metadata)

A method for process given request.

Parameters

• request (binary) – Binary request without deserialisation.

• metadata (tuple) – A gRPC service metadata (included http2 headers). For more details read https://grpc.github.io/grpc/python/grpc.html.

Returns

Return tuple of host and responce from the target services.

Return type

(str, binary)

class grpc_proxy.balancer.PickFirst(service, method, adresses=[], options=[], metadata=None)

Implementation of pick first balancer with random host choosing.

sent(request, metadata)

A method for process given request.

Parameters

• request (binary) – Binary request without deserialisation.

• metadata (tuple) – A gRPC service metadata (included http2 headers). For more details read https://grpc.github.io/grpc/python/grpc.html.

Returns

Return tuple of host and responce from the target services.

Return type

(str, binary)

class grpc_proxy.balancer.RandomChoice(service, method, adresses=[], options=[], metadata=None)

Implementation of random balancer with random host choosing.

sent(request, metadata)

A method for process given request.

Parameters

• request (binary) – Binary request without deserialisation.

• metadata (tuple) – A gRPC service metadata (included http2 headers). For more details read https://grpc.github.io/grpc/python/grpc.html.

Returns

Return tuple of host and responce from the target services.

Return type

(str, binary)