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README.md

cgidemo

本工程是网关demo。

编译依赖

必要操作

# 取出共有第三方包工程,其中 /path/to 需要自己指定
# *** 如果其它工程做了软链接,则不需重复以下三步 ***
mkdir -P /path/to/repository/commons
cd /path/to/repository/commons
git clone http://gitlab.chejinjia.cn/repository/commons/golangpkgs.git

# 建立业务工程,并关联golangpkgs
mkdir -p /path/to/repository/projects/src
export GOPATH=/path/to/repository/projects
cd /path/to/repository/projects/src
ln -s /path/to/repository/commons/golangpkgs/vendor/ . # 如果其它工程做了软链接,则忽略此行
git clone git@gitlab.chejinjia.cn:repository/your_project.git # 本工程的链接
go build
...

RPC(微服务)的引入流程

1. 在rpc_protocols中找到需要使用的RPC(微服务)目录(如arith)

2. 将目录(如arith)拷贝到自身工程的rpc_apis目录

rpc_apis/arith/

3. 创建rpc的客户端文件

rpc_apis/arith/client.go

package arith
                               
import (
    "context"
    "fmt"
    "time"                     

    "github.com/smallnest/rpcx/client"
    "github.com/smallnest/rpcx/protocol"
    "github.com/smallnest/rpcx/share"
) 
  
type ArithXClient struct {
    xcli client.XClient        
}   

func (a *ArithXClient) Init(etcdAddrs []string, basePath, servicePath string) { 
    opt := client.Option{
        Retries:        1,     
        RPCPath:        share.DefaultRPCPath,
        ConnectTimeout: 10 * time.Second,
        SerializeType:  protocol.JSON,  
        CompressType:   protocol.None,  
        BackupLatency:  10 * time.Millisecond,
    }

    d := client.NewEtcdDiscovery(basePath, servicePath, etcdAddrs, nil)
    a.xcli = client.NewXClient(servicePath, client.Failtry, client.RandomSelect, d, opt)
}

func (a *ArithXClient) Add(ctx context.Context, req *ArithMulReq) (reply ArithMulReply, err error) {
    err = a.xcli.Call(ctx, "Add", req, &reply);
    return
}

func (a *ArithXClient) Mul(ctx context.Context, req *ArithMulReq) (reply ArithMulReply, err error) {
    err = a.xcli.Call(ctx, "Mul", req, &reply);
    return
}

4. 初始化一个RPC Client

rpc_apis/init.go添加以下内容

package rpc_apis

import (
	"cgidemo/rpc_apis/arith"

	"cgidemo/common.in/config"
)

var Arith *arith.ArithXClient

func Init(etcdAddrs []string, conf *config.Configure) {
	Arith = &arith.ArithXClient{}
	Arith.Init(etcdAddrs, conf.Rpc.BasePath, conf.Rpc.Arith.Name)
}

关于日志

日志使用步骤

1. 在要打印日志的包目录下,拷贝一份logger.go,并修改logger所属包名:

./controllers/ctrl_v1
└── logger.go
./controllers/ctrl_v2
└── logger.go
./common.in/task
└── logger.go

2. 在main.go中添加如下代码:

// 通用logger
commonLogger := logger.InitLogger(runmode, fmt.Sprintf("logs/%s.log", appname),
	maxSize, maxBackups, maxAge, disableStacktrace)
// 单独设置
accessLogger := logger.NewInfoLogger(runmode, fmt.Sprintf("logs/%s-access.log", appname),
    maxSize, maxBackups, maxAge)

// 设置需要使用logger的地方
// common日志
ctrl_v1.SetLogger(commonLogger)
ctrl_v2.SetLogger(commonLogger)
// access日志
task.SetLogger(accessLogger)

错误日志规范

l.Error("业务",
        zap.String("操作", "操作名称"),
        zap.String("参数或字段", "参数列表以及值"),
        zap.String("error", err.Error()))

mysql 错误日志

l.Error("mysql",
    zap.String("sql", "SELECT from c_device"), // 操作+表名
    zap.String("fields", utils.MarshalJsonString(field1, value1, field2, value2)),
    zap.String("error", err.Error()))

redis 错误日志

l.Error("redis",
    zap.String("cmd", "SETEX"), // 命令
    zap.String("args", utils.MarshalJsonString(key, seconds, value)),
    zap.String("error", err.Error()))

调用rpc 错误日志

l.Error("rpc",
    zap.String("call", "Arith.Add"), // 注册名.方法名
    zap.String("args", utils.MarshalJsonString(req)),
    zap.String("error", err.Error()))

内部函数调用 错误日志

l.Error("func",
    zap.String("call", "Add"), // 函数名
    zap.String("args", utils.MarshalJsonString(arg1, arg2, arg3)),
    zap.String("error", err.Error()))