2022-06-15 11:50:17 +08:00
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// Package redis ...
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//
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// Description : redis 客户端
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 2021-02-27 4:49 下午
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package redis
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import (
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"encoding/json"
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"fmt"
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"path/filepath"
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2022-06-15 11:50:17 +08:00
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"strings"
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2022-06-15 15:02:45 +08:00
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"sync"
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2022-06-15 11:50:17 +08:00
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"time"
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2022-06-15 15:02:45 +08:00
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"git.zhangdeman.cn/zhangdeman/util"
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2022-06-15 11:50:17 +08:00
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"git.zhangdeman.cn/zhangdeman/logger"
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redisInstance "github.com/go-redis/redis/v8"
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"go.uber.org/zap"
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)
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2022-06-15 15:02:45 +08:00
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var (
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// Client 连接实例
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Client ClientInterface
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)
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2022-06-22 21:34:16 +08:00
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// InitWithCfgFile 使用配置文件初始化
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 21:24 2022/6/22
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func InitWithCfgFile(cfgFilePath string) error {
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c := &OwnClient{
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lock: &sync.RWMutex{},
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instanceTable: make(map[string]*RealClient),
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confTable: make(map[string]*FullConfig),
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parseErrorFunc: defaultParseError,
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}
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if err := c.loadConfig(cfgFilePath); nil != err {
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return err
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}
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Client = c
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return nil
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}
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// InitWithCfgDir 使用配置目录初始化
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 21:31 2022/6/22
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func InitWithCfgDir(cfgDir string) error {
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c := &OwnClient{
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lock: &sync.RWMutex{},
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instanceTable: make(map[string]*RealClient),
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confTable: make(map[string]*FullConfig),
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parseErrorFunc: defaultParseError,
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}
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if err := c.batchLoadConfig(cfgDir); nil != err {
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return err
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}
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Client = c
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return nil
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}
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// InitWithCfgFileList 使用批量的配置文件初始化
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 21:33 2022/6/22
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func InitWithCfgFileList(cfgFileList []string) error {
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c := &OwnClient{
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lock: &sync.RWMutex{},
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instanceTable: make(map[string]*RealClient),
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confTable: make(map[string]*FullConfig),
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parseErrorFunc: defaultParseError,
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}
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for _, cfgFilePath := range cfgFileList {
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if err := c.loadConfig(cfgFilePath); nil != err {
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return err
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}
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}
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Client = c
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return nil
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}
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2022-06-15 11:50:17 +08:00
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// defaultParseError ...
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 10:59 下午 2021/2/27
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func defaultParseError(err error) error {
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if nil == err {
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return nil
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}
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errMsg := err.Error()
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if errMsg == "nil" || errMsg == "<nil>" {
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return nil
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}
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strArr := strings.Split(errMsg, ":")
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if len(strArr) != 2 {
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return err
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}
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msg := strings.ToLower(strings.TrimSpace(strArr[1]))
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if msg == "nil" || msg == "<nil>" {
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return nil
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}
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return err
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}
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// RealClient 包装好的 redis client
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type RealClient struct {
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Flag string // redis 标识
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Master *redisInstance.Client // redis 实例
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Slave *redisInstance.Client // redis 实例
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Logger *zap.Logger // 日志实例
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}
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// NewClient 获取redis client实例
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 5:05 下午 2021/2/27
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func NewClient(config map[string]*FullConfig, parseErrorFunc func(err error) error) (ClientInterface, error) {
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c := &OwnClient{
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instanceTable: make(map[string]*RealClient),
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loggerTable: make(map[string]*zap.Logger),
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confTable: config,
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parseErrorFunc: parseErrorFunc,
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}
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if nil == c.parseErrorFunc {
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c.parseErrorFunc = defaultParseError
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}
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return c, c.init()
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}
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// OwnClient 包装的redis client
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2022-06-15 11:50:17 +08:00
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 4:52 下午 2021/2/27
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type OwnClient struct {
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lock *sync.RWMutex // 锁
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loggerTable map[string]*zap.Logger // 日志实例
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instanceTable map[string]*RealClient // redis 实例
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confTable map[string]*FullConfig // redis 配置
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parseErrorFunc func(err error) error // 解析err的function,解析执行结果是否为失败,有的场景,执行成功,返回 redis:nil / redis:<nil>
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}
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2022-06-15 21:28:03 +08:00
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// AddClientWithCfgFile 使用具体配置文件初始化
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 20:57 2022/6/15
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func (c *OwnClient) AddClientWithCfgFile(cfgPath string) error {
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var (
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err error
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)
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if err = c.loadConfig(cfgPath); nil != err {
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return err
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}
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return c.init()
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}
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// AddClientWithCfgDir 使用配置目录进行初始化
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 20:58 2022/6/15
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func (c *OwnClient) AddClientWithCfgDir(cfgDir string) error {
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var (
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err error
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)
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if err = c.batchLoadConfig(cfgDir); nil != err {
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return err
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}
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return c.init()
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}
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// loadConfig 载入配置文件
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 14:31 2022/6/15
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func (c *OwnClient) loadConfig(cfgPath string) error {
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var (
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err error
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cfg FullConfig
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)
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filePathArr := strings.Split(cfgPath, string(filepath.Separator))
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if len(filePathArr) == 0 {
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return CfgFilePathError()
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}
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fileName := strings.ToLower(filePathArr[len(filePathArr)-1])
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fileArr := strings.Split(fileName, ".")
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if len(filePathArr) < 2 {
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return CfgFileFormatErr("未知")
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}
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flag := strings.Trim(
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strings.Trim(
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strings.Trim(fileName, ".json"),
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".yaml"), ".yml")
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switch strings.ToLower(fileArr[len(fileArr)-1]) {
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case "json":
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if err = util.File.ReadJSONContent(cfgPath, &cfg); nil != err {
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return err
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}
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flag = strings.Join(fileArr[0:len(fileArr)-1], ".")
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case "yml":
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fallthrough
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case "yaml":
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if err = util.File.ReadYmlContent(cfgPath, &cfg); nil != err {
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return err
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}
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flag = strings.Join(fileArr[0:len(fileArr)-1], ".")
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default:
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// 不支持的格式,跳过
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}
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c.lock.Lock()
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c.confTable[flag] = &cfg
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c.lock.Unlock()
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return nil
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}
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// batchLoadConfig 批量载入配置
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 16:44 2022/6/15
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func (c *OwnClient) batchLoadConfig(cfgDir string) error {
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filepathNames, _ := filepath.Glob(filepath.Join(cfgDir, "*"))
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for i := range filepathNames {
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if err := c.loadConfig(filepathNames[i]); nil != err {
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return err
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}
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}
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return nil
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}
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// init 初始化redis连接
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 5:31 下午 2021/2/27
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func (c *OwnClient) init() error {
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var err error
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for flag, conf := range c.confTable {
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c.instanceTable[flag] = &RealClient{
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Flag: flag,
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Master: redisInstance.NewClient(Config2Options(conf.Master)),
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Slave: redisInstance.NewClient(Config2Options(conf.Slave)),
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}
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if c.instanceTable[flag].Logger, err = logger.GetLogInstanceFromInputConfig(conf.Logger); nil != err {
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return InitLoggerErr(flag, err)
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}
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}
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return nil
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}
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// initLogger 初始化日志
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 7:07 下午 2021/2/27
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2022-06-15 15:02:45 +08:00
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func (c *OwnClient) initLogger(flag string, conf *logger.InputLogConfig) error {
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var err error
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c.loggerTable[flag], err = logger.GetLogInstanceFromInputConfig(conf)
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return LoggerInitFail(flag, err)
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}
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// GetRedisClient 获取redis实例
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 5:16 下午 2021/2/27
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func (c *OwnClient) GetRedisClient(flag string) (*RealClient, error) {
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redisClient, exist := c.instanceTable[flag]
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if !exist {
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return nil, FlagNotFound(flag)
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}
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return redisClient, nil
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}
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// log 记录redis请求日志
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 8:52 下午 2021/2/27
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2022-06-15 21:28:03 +08:00
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func (c *OwnClient) log(ctx *Context, realClient *RealClient, isMaster bool, cmdResult redisInstance.Cmder, startTime int64, finishTime int64) {
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if nil == realClient || nil == realClient.Logger {
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return
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}
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realClient.Logger.Info(
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"执行redis命令日志记录",
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zap.Any(ctx.RequestIDField, ctx.RequestID), // 上下文串联的requestID
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zap.String("exec_command", cmdResult.String()), // 执行的命令
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zap.Bool("use_master", isMaster), // 是否使用主节点
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zap.Float64("exec_used_time", float64(finishTime-startTime)/1e6), // 耗时,单位: ms
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zap.Error(cmdResult.Err()), // 异常信息
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)
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}
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// CommandProxy 执行命令的代理
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 9:41 下午 2021/2/27
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2022-06-15 15:02:45 +08:00
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func (c *OwnClient) CommandProxy(ctx *Context, flag string, cmd string, param ...interface{}) (string, error) {
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var (
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realClient *RealClient
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err error
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)
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if len(cmd) == 0 {
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return "", EmptyCmd()
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}
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if nil == ctx {
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|
ctx = NewContext(flag)
|
|
|
|
}
|
|
|
|
if realClient, err = c.GetRedisClient(ctx.Flag); nil != err {
|
|
|
|
return "", err
|
|
|
|
}
|
2022-06-15 21:28:03 +08:00
|
|
|
flagArr := strings.Split(flag, "#")
|
|
|
|
if len(flagArr) == 1 {
|
|
|
|
flagArr = append(flagArr, "r")
|
|
|
|
}
|
|
|
|
isMater := flagArr[1] == "w"
|
|
|
|
redisClient := realClient.Slave
|
|
|
|
if isMater {
|
|
|
|
redisClient = realClient.Master
|
|
|
|
}
|
2022-06-15 11:50:17 +08:00
|
|
|
redisCmd := append([]interface{}{cmd}, param...)
|
|
|
|
startTime := time.Now().Unix()
|
2022-06-15 21:28:03 +08:00
|
|
|
cmdResult := redisClient.Do(ctx.Ctx, redisCmd...)
|
|
|
|
go c.log(ctx, realClient, isMater, cmdResult, startTime, time.Now().UnixNano())
|
2022-06-15 11:50:17 +08:00
|
|
|
return fmt.Sprintf("%v", cmdResult.Val()), c.parseErrorFunc(cmdResult.Err())
|
|
|
|
}
|
|
|
|
|
|
|
|
// CommandProxyWithReceiver 执行命令,并解析结果
|
|
|
|
//
|
|
|
|
// Author : go_developer@163.com<白茶清欢>
|
|
|
|
//
|
|
|
|
// Date : 10:00 下午 2021/2/27
|
2022-06-15 15:02:45 +08:00
|
|
|
func (c *OwnClient) CommandProxyWithReceiver(ctx *Context, flag string, receiver interface{}, cmd string, param ...interface{}) error {
|
2022-06-15 11:50:17 +08:00
|
|
|
if nil == receiver {
|
|
|
|
return ReceiverISNIL()
|
|
|
|
}
|
|
|
|
var (
|
|
|
|
err error
|
|
|
|
result string
|
|
|
|
)
|
|
|
|
|
|
|
|
if result, err = c.CommandProxy(ctx, flag, cmd, param...); nil != err {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
return ResultConvertFail(json.Unmarshal([]byte(result), receiver))
|
|
|
|
}
|
|
|
|
|
|
|
|
// ClientInterface 定义redis client的接口实现,方便单元测试数据mock
|
|
|
|
//
|
|
|
|
// Author : go_developer@163.com<白茶清欢>
|
|
|
|
//
|
|
|
|
// Date : 10:49 下午 2021/2/27
|
|
|
|
type ClientInterface interface {
|
|
|
|
GetRedisClient(flag string) (*RealClient, error)
|
|
|
|
CommandProxy(ctx *Context, flag string, cmd string, param ...interface{}) (string, error)
|
|
|
|
CommandProxyWithReceiver(ctx *Context, flag string, receiver interface{}, cmd string, param ...interface{}) error
|
|
|
|
}
|