use golang as sender

etc/webapi.conf

@@ -10,19 +10,39 @@ AdminRole = "Admin"
 # metrics descriptions
 MetricsYamlFile = "./etc/metrics.yaml"
 
-# Linkage with notify.py script
+[[NotifyChannels]]
-NotifyChannels = [ "email", "dingtalk", "wecom", "feishu" ]
+Label = "邮箱"
+# do not change Key
+Key = "email"
+
+[[NotifyChannels]]
+Label = "钉钉机器人"
+# do not change Key
+Key = "dingtalk"
+
+[[NotifyChannels]]
+Label = "企微机器人"
+# do not change Key
+Key = "wecom"
+
+[[NotifyChannels]]
+Label = "飞书机器人"
+# do not change Key
+Key = "feishu"
 
 [[ContactKeys]]
 Label = "Wecom Robot Token"
+# do not change Key
 Key = "wecom_robot_token"
 
 [[ContactKeys]]
 Label = "Dingtalk Robot Token"
+# do not change Key
 Key = "dingtalk_robot_token"
 
 [[ContactKeys]]
 Label = "Feishu Robot Token"
+# do not change Key
 Key = "feishu_robot_token"
 
 [Log]

go.mod

@@ -23,12 +23,15 @@ require (
 	github.com/prometheus/client_golang v1.11.0
 	github.com/prometheus/common v0.26.0
 	github.com/prometheus/prometheus v2.5.0+incompatible
+	github.com/tidwall/gjson v1.14.0 // indirect
 	github.com/toolkits/pkg v1.2.9
 	github.com/urfave/cli/v2 v2.3.0
 	golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d // indirect
 	golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e // indirect
 	google.golang.org/genproto v0.0.0-20211007155348-82e027067bd4 // indirect
 	google.golang.org/grpc v1.41.0 // indirect
+	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
+	gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df // indirect
 	gorm.io/driver/mysql v1.1.2
 	gorm.io/driver/postgres v1.1.1
 	gorm.io/gorm v1.21.15

go.sum

@@ -298,6 +298,12 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/tidwall/gjson v1.14.0 h1:6aeJ0bzojgWLa82gDQHcx3S0Lr/O51I9bJ5nv6JFx5w=
+github.com/tidwall/gjson v1.14.0/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
+github.com/tidwall/match v1.1.1 h1:+Ho715JplO36QYgwN9PGYNhgZvoUSc9X2c80KVTi+GA=
+github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
+github.com/tidwall/pretty v1.2.0 h1:RWIZEg2iJ8/g6fDDYzMpobmaoGh5OLl4AXtGUGPcqCs=
+github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
 github.com/toolkits/pkg v1.2.9 h1:zGlrJDl+2sMBoxBRIoMtAwvKmW5wctuji2+qHCecMKk=
 github.com/toolkits/pkg v1.2.9/go.mod h1:ZUsQAOoaR99PSbes+RXSirvwmtd6+XIUvizCmrjfUYc=
 github.com/ugorji/go v1.1.7 h1:/68gy2h+1mWMrwZFeD1kQialdSzAb432dtpeJ42ovdo=
@@ -465,12 +471,16 @@ google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQ
 google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
+gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc h1:2gGKlE2+asNV9m7xrywl36YYNnBG5ZQ0r/BOOxqPpmk=
+gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc/go.mod h1:m7x9LTH6d71AHyAX77c9yqWCCa3UKHcVEj9y7hAtKDk=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
+gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df h1:n7WqCuqOuCbNr617RXOY0AWRXxgwEyPp2z+p0+hgMuE=
+gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df/go.mod h1:LRQQ+SO6ZHR7tOkpBDuZnXENFzX8qRjMDMyPD6BRkCw=
 gopkg.in/inconshreveable/log15.v2 v2.0.0-20180818164646-67afb5ed74ec/go.mod h1:aPpfJ7XW+gOuirDoZ8gHhLh3kZ1B08FtV2bbmy7Jv3s=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=

src/models/alert_rule.go

@@ -7,7 +7,6 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
-	"github.com/toolkits/pkg/slice"
 	"github.com/toolkits/pkg/str"
 
 	"github.com/didi/nightingale/v5/src/webapi/config"
@@ -101,7 +100,7 @@ func (ar *AlertRule) Verify() error {
 	if len(channels) > 0 {
 		nlst := make([]string, 0, len(channels))
 		for i := 0; i < len(channels); i++ {
-			if slice.ContainsString(config.C.NotifyChannels, channels[i]) {
+			if config.LabelAndKeyHasKey(config.C.NotifyChannels, channels[i]) {
 				nlst = append(nlst, channels[i])
 			}
 		}

src/server/engine/consume.go

@@ -155,3 +155,11 @@ func mapKeys(m map[int64]struct{}) []int64 {
 	}
 	return lst
 }
+
+func StringSetKeys(m map[string]struct{}) []string {
+	lst := make([]string, 0, len(m))
+	for k := range m {
+		lst = append(lst, k)
+	}
+	return lst
+}

src/server/engine/engine.go

@@ -5,6 +5,7 @@ import (
 	"time"
 
 	"github.com/didi/nightingale/v5/src/server/config"
+	"github.com/didi/nightingale/v5/src/server/sender"
 	promstat "github.com/didi/nightingale/v5/src/server/stat"
 )
 
@@ -22,6 +23,8 @@ func Start(ctx context.Context) error {
 
 	go reportQueueSize()
 
+	go sender.StartEmailSender()
+
 	return nil
 }
 

src/server/engine/notify.go

@@ -13,6 +13,7 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
+	"github.com/tidwall/gjson"
 	"github.com/toolkits/pkg/file"
 	"github.com/toolkits/pkg/logger"
 	"github.com/toolkits/pkg/runner"
@@ -21,6 +22,7 @@ import (
 	"github.com/didi/nightingale/v5/src/pkg/sys"
 	"github.com/didi/nightingale/v5/src/server/config"
 	"github.com/didi/nightingale/v5/src/server/memsto"
+	"github.com/didi/nightingale/v5/src/server/sender"
 	"github.com/didi/nightingale/v5/src/storage"
 )
 
@@ -117,8 +119,110 @@ func alertingRedisPub(bs []byte) {
 func handleNotice(notice Notice, bs []byte) {
 	alertingCallScript(bs)
 
-	// TODO 弄个channel发邮件，学习daemon写法
+	emailset := make(map[string]struct{})
-	// 收集tokens、phones，发呗
+	phoneset := make(map[string]struct{})
+	wecomset := make(map[string]struct{})
+	dingtalkset := make(map[string]struct{})
+	feishuset := make(map[string]struct{})
+
+	for _, user := range notice.Event.NotifyUsersObj {
+		if user.Email != "" {
+			emailset[user.Email] = struct{}{}
+		}
+
+		if user.Phone != "" {
+			phoneset[user.Phone] = struct{}{}
+		}
+
+		bs, err := user.Contacts.MarshalJSON()
+		if err != nil {
+			logger.Errorf("handle_notice: failed to marshal contacts: %v", err)
+			continue
+		}
+
+		ret := gjson.GetBytes(bs, "dingtalk_robot_token")
+		if ret.Exists() {
+			dingtalkset[ret.String()] = struct{}{}
+		}
+
+		ret = gjson.GetBytes(bs, "wecom_robot_token")
+		if ret.Exists() {
+			wecomset[ret.String()] = struct{}{}
+		}
+
+		ret = gjson.GetBytes(bs, "feishu_robot_token")
+		if ret.Exists() {
+			feishuset[ret.String()] = struct{}{}
+		}
+	}
+
+	phones := StringSetKeys(phoneset)
+
+	for _, ch := range notice.Event.NotifyChannelsJSON {
+		switch ch {
+		case "email":
+			if len(emailset) == 0 {
+				continue
+			}
+
+			subject, has := notice.Tpls["subject.tpl"]
+			if !has {
+				subject = "subject.tpl not found"
+			}
+
+			content, has := notice.Tpls["mailbody.tpl"]
+			if !has {
+				content = "mailbody.tpl not found"
+			}
+
+			sender.WriteEmail(subject, content, StringSetKeys(emailset))
+		case "dingtalk":
+			if len(dingtalkset) == 0 {
+				continue
+			}
+
+			content, has := notice.Tpls["dingtalk.tpl"]
+			if !has {
+				content = "dingtalk.tpl not found"
+			}
+
+			sender.SendDingtalk(sender.DingtalkMessage{
+				Title:     notice.Event.RuleName,
+				Text:      content,
+				AtMobiles: phones,
+				Tokens:    StringSetKeys(dingtalkset),
+			})
+		case "wecom":
+			if len(wecomset) == 0 {
+				continue
+			}
+
+			content, has := notice.Tpls["wecom.tpl"]
+			if !has {
+				content = "wecom.tpl not found"
+			}
+			sender.SendWecom(sender.WecomMessage{
+				Text:   content,
+				Tokens: StringSetKeys(wecomset),
+			})
+		case "feishu":
+			if len(feishuset) == 0 {
+				continue
+			}
+
+			content, has := notice.Tpls["feishu.tpl"]
+			if !has {
+				content = "feishu.tpl not found"
+			}
+			sender.SendFeishu(sender.FeishuMessage{
+				Text:      content,
+				AtMobiles: phones,
+				Tokens:    StringSetKeys(feishuset),
+			})
+		default:
+			logger.Info("channel ", ch, " not supported by golang")
+		}
+	}
 }
 
 func notify(event *models.AlertCurEvent) {

src/server/sender/dingtalk.go

@@ -1,6 +1,7 @@
 package sender
 
 import (
+	"strings"
 	"time"
 
 	"github.com/didi/nightingale/v5/src/server/poster"
@@ -31,13 +32,18 @@ type dingtalk struct {
 }
 
 func SendDingtalk(message DingtalkMessage) {
+	ats := make([]string, len(message.AtMobiles))
+	for i := 0; i < len(message.AtMobiles); i++ {
+		ats[i] = "@" + message.AtMobiles[i]
+	}
+
 	for i := 0; i < len(message.Tokens); i++ {
 		url := "https://oapi.dingtalk.com/robot/send?access_token=" + message.Tokens[i]
 		body := dingtalk{
 			Msgtype: "markdown",
 			Markdown: dingtalkMarkdown{
 				Title: message.Title,
-				Text:  message.Text,
+				Text:  message.Text + " " + strings.Join(ats, " "),
 			},
 			At: dingtalkAt{
 				AtMobiles: message.AtMobiles,

src/server/sender/email.go

@@ -0,0 +1,71 @@
+package sender
+
+import (
+	"crypto/tls"
+	"time"
+
+	"github.com/didi/nightingale/v5/src/server/config"
+	"github.com/toolkits/pkg/logger"
+	"gopkg.in/gomail.v2"
+)
+
+var mailch = make(chan *gomail.Message, 100000)
+
+func WriteEmail(subject, content string, tos []string) {
+	m := gomail.NewMessage()
+
+	m.SetHeader("From", config.C.SMTP.From)
+	m.SetHeader("To", tos...)
+	m.SetHeader("Subject", subject)
+	m.SetBody("text/html", content)
+
+	mailch <- m
+}
+
+func dialSmtp(d *gomail.Dialer) gomail.SendCloser {
+	for {
+		if s, err := d.Dial(); err != nil {
+			logger.Errorf("email_sender: failed to dial smtp: %s", err)
+			time.Sleep(time.Second)
+			continue
+		} else {
+			return s
+		}
+	}
+}
+
+func StartEmailSender() {
+	conf := config.C.SMTP
+
+	d := gomail.NewDialer(conf.Host, conf.Port, conf.User, conf.Pass)
+	if conf.InsecureSkipVerify {
+		d.TLSConfig = &tls.Config{InsecureSkipVerify: true}
+	}
+
+	var s gomail.SendCloser
+	open := false
+	for {
+		select {
+		case m, ok := <-mailch:
+			if !ok {
+				return
+			}
+			if !open {
+				s = dialSmtp(d)
+				open = true
+			}
+			if err := gomail.Send(s, m); err != nil {
+				logger.Errorf("email_sender: failed to send: %s", err)
+			}
+		// Close the connection to the SMTP server if no email was sent in
+		// the last 30 seconds.
+		case <-time.After(30 * time.Second):
+			if open {
+				if err := s.Close(); err != nil {
+					logger.Warningf("email_sender: failed to close smtp connection: %s", err)
+				}
+				open = false
+			}
+		}
+	}
+}

src/webapi/config/config.go

@@ -78,8 +78,8 @@ type Config struct {
 	I18N            string
 	AdminRole       string
 	MetricsYamlFile string
-	ContactKeys     []ContactKey
+	ContactKeys     []LabelAndKey
-	NotifyChannels  []string
+	NotifyChannels  []LabelAndKey
 	Log             logx.Config
 	HTTP            httpx.Config
 	JWTAuth         JWTAuth
@@ -94,11 +94,20 @@ type Config struct {
 	Ibex            Ibex
 }
 
-type ContactKey struct {
+type LabelAndKey struct {
 	Label string `json:"label"`
 	Key   string `json:"key"`
 }
 
+func LabelAndKeyHasKey(keys []LabelAndKey, key string) bool {
+	for i := 0; i < len(keys); i++ {
+		if keys[i].Key == key {
+			return true
+		}
+	}
+	return false
+}
+
 type JWTAuth struct {
 	SigningKey     string
 	AccessExpired  int64