enhance proto file parse

support parse proto imports
support parse proto options
support parse proto message options

support upgrade service signature after modify service interface method

grpc no upgrade
protobuf no upgrade

optimize update a exist service

deprecated command below:

gk update svc
gk update grpc svc

udpate a service after add one or more methods, directly run init command again:

gk init svc
gk add grpc svc
gk init grpc svc

fix struct tag parse

Add support to update grpc transport

Add support to update grpc transport

Add a new method to a service, run

gk update svc

By now, it will update the Endpoint, Middleware, Http transport, next you run:

gk add grpc svc

run this, it will update the probobuf file, then you run:

gk update grpc svc

it will update the grpc transport

Add protobuf file parser

Add support to update protobuf file

After add a new method to the interface, you can run "gk add grpc svc" again to update the protobuf file

gk add grpc svc

gk update svc

Add support of updating exist service

type Service interface {
	FooToo(ctx context.Context, inParam string) (outParam string, err error)
}

At first, you have a method for the interface, then you run:

gk init svc

After that, you add a another method to the interface, like below:

type Service interface {
	FooToo(ctx context.Context, inParam string) (outParam string, err error)
	TooToo(ctx context.Context, in string) (out []string, err error)
}

Befor this release, you have to delete the previous files, and run "gk init svc" again, now you can run

gk update svc

limits

• only update codes in directory of service and endpoint, and transport of http
• not work for pb directory and grpc transport

Add http api testing boilerplate

Add a new boilerplate file in directory of transport, whch can simulate http client to send http request to each api exposed by service

catching the go-kit 0.9.0

adjust some code to fit the new version of go-kit 0.9.0