add mon.plugins.redis descriptions (#529)

* add mon.plugins.redis descriptions

* bugfix: add region field for instances/heartbeat

etc/prober.yml

-region: default 
 workerProcesses: 5
+
 logger:
   dir: logs/prober
-  level: DEBUG
+  level: INFO
   keepHours: 24
 pluginsConfig: etc/plugins
-ignoreConfig: false
+
+report:
+  enabled: true
+  region: default 
+  interval: 4000
+  timeout: 3000
+  api: api/hbs/heartbeat

src/common/report/report.go

@@ -21,6 +21,7 @@ type ReportSection struct {
 	HTTPPort string `yaml:"http_port"`
 	RPCPort  string `yaml:"rpc_port"`
 	Remark   string `yaml:"remark"`
+	Region   string `yaml:"region"`
 }
 
 var Config ReportSection
@@ -55,6 +56,7 @@ func report(addrs []string) {
 			"rpc_port":  Config.RPCPort,
 			"http_port": Config.HTTPPort,
 			"remark":    Config.Remark,
+			"region":    Config.Region,
 		}
 
 		var body reportRes

src/models/mon_hbs.go

@@ -20,7 +20,7 @@ func (i *Instance) Add() error {
 }
 
 func (i *Instance) Update() error {
-	_, err := DB["hbs"].Where("id=?", i.Id).MustCols("ts", "http_port", "rpc_port").Update(i)
+	_, err := DB["hbs"].Where("id=?", i.Id).MustCols("ts", "http_port", "rpc_port", "region").Update(i)
 	return err
 }
 

src/modules/monapi/plugins/redis/redis.go

@@ -2,6 +2,7 @@ package redis
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/didi/nightingale/src/modules/monapi/collector"
 	"github.com/didi/nightingale/src/modules/monapi/plugins"
@@ -38,13 +39,15 @@ var (
 			"Optional. Specify redis commands to retrieve values": "设置服务器命令,采集数据名称",
 			"Password":                "密码",
 			"specify server password": "服务密码",
+			"redis-cli command":       "redis-cli命令，如果参数中带有空格，请以数组方式设置参数",
+			"metric name":             "变量名称，采集时会加上前缀 redis_commands_",
 		},
 	}
 )
 
 type RedisCommand struct {
-	Command []string `label:"Command" json:"command,required" description:"" `
-	Field   string   `label:"Field" json:"field,required" description:"metric name"`
+	Command []string `label:"Command" json:"command,required" example:"get sample_key" description:"redis-cli command"`
+	Field   string   `label:"Field" json:"field,required" example:"sample_key" description:"metric name"`
 	Type    string   `label:"Type" json:"type" enum:"[\"float\", \"integer\"]" default:"float" description:"metric type"`
 }
 
@@ -62,6 +65,20 @@ func (p *RedisRule) Validate() error {
 		if len(cmd.Command) == 0 {
 			return fmt.Errorf("redis.rule.commands[%d].command must be set", i)
 		}
+
+		var command []string
+		for i, cmd := range cmd.Command {
+			if i == 0 {
+				for _, v := range strings.Fields(cmd) {
+					command = append(command, v)
+				}
+				continue
+			}
+
+			command = append(command, cmd)
+		}
+		cmd.Command = command
+
 		if cmd.Field == "" {
 			return fmt.Errorf("redis.rule.commands[%d].field must be set", i)
 		}