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A tour of grpc:02 - generate code from proto

2022-06-29 16:24:00 【InfoQ】

In the previous section , We get it gRPC Some basic theories of , Next we will try to write proto file , And through the matching generation Generator Generation Java and golang Code for . In the practice part, I will try to build a notebook sales platform , It is convenient for us to carry out Study .

from proto Generate golang

1. New projects

2. establish proto Folder

3. add to processor_message.proto Folder and Add something :

How to define protocol information ?

Use message Followed by the message name , Within its message block , Define all its fields , The format is as follows :

a. The message name format shall be named for the big hump

b. Field name format should be lowercase serpentine

c. The data types are :string、bool、bytes、float、double、int32、int64、uint32、uint64、sint32、sint64...

d. Each message field should be assigned a unique label , Labels are more important than field names , because protobuf It will be used to serialize the cancellation Rest . Labels don't have to be ordered or sequential , however

For the same level field of the message , They must be unique .

4. from protocol buffer Generate go Code

a. install protobuf: brew install protobuf

b. adopt protoc Command to check for correct installation

c. Install two go-libraries

according to go Version selection uses the above go get or

【 go install github.com/golang/protobuf/protoc- [email protected] 】

d. Create a pb Folders are used to store generated code , And execute the following command .

It's really annoying if we input such tedious commands every time , So we can write a simple Makefile Reduce repeated input Enter complex commands

After running the generated code above , We can find it in the project directory pb Under the folder, you can see that the processor_message.pb.go

5. With the above experience , We might as well process_message.proto Add a GPU Information

a. Adding GPU front , We also need to add a type that describes the memory memory_message.proto Used to describe explicit save . A description of memory message Should be determined by the size and The unit consists of two parts

Create a new one memory_message.proto Increase the description of memory

b. With the description of video memory memory_message We can then add GPU Content. , Here we want to make use import take mermory_message Import the content of ( If it's here IDE Prompt cannot import , You need to set up IDE Refer to this

https://blog.csdn.net/z449077880/article/details/121741524

)

function make gen Generate .

6. Empathy , Let's next add... That describes the keyboard configuration keyboard_message.proto、 Describe the... Of the screen screen_message.proto 、 Describe the stored storage_message.proto And describing notebook information laptop_message.proto

a. keyboard_message.proto