Golang Application Level OS Framework Base Library

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Table of Contents

• Quickstart
• Directory structure
• Explain for use
• DatabaseAccessLayer

Quickstart

Browse this tros example to quickly build your Golang web application.

DirectoryStructure：

• |--conf: config file management
• |--contants: configuration file key constants && application level constant definitions
• |--context: the context encapsulation of the TROS version
• |--enums: application level enumeration definition
  • |--country: national definition
  • |--currency: money definition
• |--lang: language definition (may be abandoned in the future)
• |--logx: application level log management trlogger
• |--pkg: application level toolkit, including common tool methods and third-party tools
  • |--third_party: third party access methods
  • |--utils: tool based methods
    • |--encrypt: application level encryption and decryption methods
• |--server: main entrance for launching application level microservices
  • |--grpc: GRPC microservice
  • |--http: HTTP microservice
  • |--middleware: interceptors for GRPC and HTTP
• |--sys: system level approach
  • |--cmd: command line execution method
  • |--structure: application level data structure
  • |--timer: application level timer
• |--trerror: application level universal error definition
• |--trkit: middleware toolkit, including connections and usage of server middleware such as DB and message queues
  • |--mongox: mongodb client
  • |--mysqlx: mysqldb client
  • |--redisx: redisdb client

Explain

• Adopting grpc gateway technology, supporting both RESTful API and grpc API
• External access can be done via HTTP
• GRPC can be used internally for microservice communication
• Interface Definition Example：
  • Implement interface definition by defining protobuf file
  • The buf command can be used to compile protobuf files into three files: pb.go, pb.gw.go, and _grpc.pb.go
  • Implementing API interfaces in services through the form of 'inheritance'

  syntax = "proto3";
  
  package console.v1;
  
  import "google/api/annotations.proto";
  import "google/protobuf/descriptor.proto";
  import "protoc-gen-openapiv2/options/annotations.proto";
  
  option go_package = "example-server/console/v1";
  
  // XXX api
  service ExampleService {
    // XXXX function
    rpc List(ListRequest) returns (ListResponse) {
      option (google.api.http) = {
        post: "/console/v1/example/list"
        body: "*"
      };
      option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
        tags: ["XXXX desc"]
      };
    }
  }
  
  // ListResponse response
  message ListResponse {
    // XXXX
    int64 total = 2 [(grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {description: "remark desc"}];
  }
  
  // ListRequest request
  message ListRequest {
    // XXXXX
    string id = 1;
  }

DatabaseAccessLayer

The trkit directory provides fast read and write access methods for MySQL, MongoDB and Redis Before use, you need to do the following steps(Taking MySQL as an example):

• Step 1:Define your. sql file and data table

CREATE TABLE `t_user`
(
    `id`        bigint      NOT NULL AUTO_INCREMENT COMMENT 'primary key',
    `user_name` varchar(64) NOT NULL COMMENT 'username',

) ENGINE=InnoDB DEFAULT COMMENT='user table';

• Step 2: Compile the CREATE TABLE statement file into Golang code using GTC Tool(Go Table Compiler）
• Step 3: Copy the generated database access Golang code to your project
  • Put the dependency repo warehouse into your project
• Step 4: Add MySQL connection parameters to your project configuration file and load them through Golang code
  • such as:

mysql:
  url: root:123456@tcp(127.0.0.1:3306)/example
  maxIdleCons: 5
  maxLife: 3600
  poolSize: 15
  maxIdleTime: 1200

• Step 5: At this point, you can efficiently start the web server service and read/write databases