基于ruby-protobuf的rpc示例

Ruby实现RPC服务

最新推荐文章于 2024-06-04 09:55:23 发布

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本文介绍如何使用Ruby结合protobuf实现远程过程调用(RPC)服务。主要内容包括安装ruby-protobuf、定义RPC服务的proto文件、编译proto文件、完成服务端与客户端代码并运行示例。

[b]1, 安装ruby-protobuf[/b]


gem install ruby_protobuf

[b]2, 定义rpc service的rpc.proto文件[/b]


package demo;

message SearchRequest {
  required string keyword = 1;
}

message SearchResponse {
  required string result = 1;
}

service RpcService {
  rpc Search (SearchRequest) returns (SearchResponse);
}

[b]3, 编译[/b]


rprotoc rpc.proto

[b]4, 完成service和client代码[/b]
rpc_service.rb


require 'protobuf/rpc/server'
require 'protobuf/rpc/handler'
require 'rpc.pb'

class Demo::SearchHandler < Protobuf::Rpc::Handler
  request Demo::SearchRequest
  response Demo::SearchResponse

  def self.process_request(request, response)
    if request.keyword == 'google'
      response.result = 'www.google.com'
    elsif request.keyword == 'freewheel'
      response.result = 'www.freewheel.tv'
    else
      response.result = ''
    end
  end
end

class Demo::RpcService < Protobuf::Rpc::Server
  def setup_handlers
    @handlers = {
      :search => Demo::SearchHandler,
    } 
  end
end

client_search.rb


#!/usr/bin/env ruby
require 'protobuf/rpc/client'
require 'rpc.pb'

# build request
request1 = Demo::SearchRequest.new
request1.keyword = 'google'
request2 = Demo::SearchRequest.new
request2.keyword = 'freewheel'

# create blunk response
response1 = Demo::SearchResponse.new
response2 = Demo::SearchResponse.new

# execute rpc
Protobuf::Rpc::Client.new('localhost', 9999).call :search, request1, response1
Protobuf::Rpc::Client.new('localhost', 9999).call :search, request2, response2

p response1.result
p response2.result

[b]5, 运行[/b]
启动Service
[code]
ruby start_rpc_service
// :port参数名改为:Port
[/code]
调用Client
[code]
ruby client_search.rb
// result
"www.google.com"
"www.freewheel.tv"
[/code]