下载源代码：地址
安装proto
#下载：protoc-3.9.1-linux-x86_64.zip
unzip protoc-3.9.1-linux-x86_64.zip -d protoc-3.9.1-linux-x86_64 # 解压
mv protoc-3.9.1-linux-x86_64 /usr/local/protoc # 移动
ln -s /usr/local/protoc/bin/protoc /usr/bin/protoc # 建立软连接
protoc --version # 测试
安装python的protof 扩展
protoc-3.9.1-linux-x86_64.zip 3 下载
unzip protobuf-python-3.9.1.zip
cd protobuf-3.9.1/python
python3 setup.py build
python3 setup.py test
python3 setup.py install
pip list # 参考protobuf 3.9.1
定义数据类型
syntax = "proto3";
package tutorial;
message searchRequest {
string query = 1;
int32 page_number = 2;
int32 result_per_page = 3;
enum Corpus {
UNIVERSAL = 0;
WEB = 1;
IMAGES =2;
LOCAL = 3;
NEWS = 4;
PRODUCTS = 5;
VIDEO = 6;
}
Corpus corpus = 4;
}
message Person {
string name = 1;
int32 id = 2;
string email = 3;
enum PhoneType {
HOME = 0;
MOBILE = 1;
WORK = 2;
}
message PhoneNumber {
string number = 1;
PhoneType type = 2;
}
repeated PhoneNumber phones = 4;
}
message AddressBook {
repeated Person people = 1;
}
protoc --python_out=./ ./test.proto # 编译文件
测试案例
from google.protobuf import json_format
from scrapy_crawl.deal.service.proto.test_pb2 import *
person = Person()
person.id = 1
person.name = 'vic'
person.email = '3264245@qq.com'
person.phones.add(number='15901780', type=Person.MOBILE)
print(person.SerializeToString())
person1 = Person()
p1 = person1.ParseFromString(person.SerializeToString())
print(p1)
j1 = json_format.MessageToDict(person1, True)
print(j1)
person2 = Person()
json_format.Parse(json_format.MessageToJson(person1, True), person2)
print(person2)
# 下面是执行结果
b'\n\x03vic\x10\x01\x1a\x0e3264245@qq.com"\x0c\n\x0815901780\x10\x01'
37
{'name': 'vic', 'id': 1, 'email': '3264245@qq.com', 'phones': [{'number': '15901780', 'type': 'MOBILE'}]}
name: "vic"
id: 1
email: "3264245@qq.com"
phones {
number: "15901780"
type: MOBILE
}
grpc服务
定义test.proto
syntax = "proto3";
package helloworld;
message HelloRequest {
string name = 1;
}
message HelloReply {
string message = 1;
}
service Greeter {
rpc SayHello (HelloRequest) returns (HelloReply) {}
rpc SayHelloAgain(HelloRequest) returns (HelloReply) {}
}
生产gRPC代码
python3 -m grpc_tools.protoc -I . --python_out=. --grpc_python_out=. helloworld.proto
创建server
import time
from concurrent import futures
from scrapy_crawl.deal.service.proto.test_pb2 import *
from scrapy_crawl.deal.service.proto.test_pb2_grpc import *
class Greeter(GreeterServicer):
def SayHello(self, request, context):
return HelloReply(message='hello world, %s' % request.name)
def SayHelloAgain(self, request, context):
return HelloReply(message='hello world, %s' % request.name)
def main():
print("------")
server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
add_GreeterServicer_to_server(Greeter(), server)
server.add_insecure_port("[::]:50051")
server.start()
try:
while True:
time.sleep(100)
except KeyboardInterrupt:
print("stop")
server.stop(0)
main()
创建client
from scrapy_crawl.deal.service.proto.test_pb2_grpc import *
def run():
channel = grpc.insecure_channel("localhost:50051")
stub = GreeterStub(channel=channel)
r = stub.SayHello(HelloRequest(name='vic'))
print("greeter client received:%s" % r.message)
r = stub.SayHelloAgain(HelloRequest(name='baby'))
print("Greeter client received: %s" % r.message)
run()
错误
- test_pb2_grpc 引入了test_pb2文件，是绝对路径引入的，修改为先对路径即可
