first commit

conf.d/example.yml

@@ -0,0 +1,48 @@
+- url: "http://hq.sinajs.cn/list=sz002307"
+  request:
+    method: "GET"
+  trigger_by:
+    # 当该字符串不存在于返回结果中发送报警给alertmanager
+    response_contains: ["北新路桥"]
+  alert:
+    labels:
+      severity: critical
+    annotations:
+      description: "test api monitor"
+
+
+- url: "https://xxxx.com"
+  request:
+    method: "POST"
+    data: '{xxx}'
+    add_header:
+      key: value
+  trigger_by:
+    # 此处传入一个正则表达式，没有匹配到正则表达式则发送报警给alertmanager
+    match_re: re.*
+  alert:
+    labels:
+      severity: critical
+    annotations:
+      description: "POST接口监控"
+
+
+- url: "https://xxxx.com"
+  request:
+    method: "POST"
+    data: '{xxx}'
+    # 监控间隔，默认为全局配置中的Interval
+    interval: 30s
+    # 请求超时时间,默认为全局配置中的timeout,
+    timeout: 10s
+    add_header:
+      key: value
+  trigger_by:
+    # 如果返回值不等于预期的字符串则发送报警给alertmanager
+    expected: "response"
+  # 用法参考promethues rule里面的labels.
+  alert:
+    labels:
+      severity: critical
+    annotations:
+      description: "接口监控"

cruiser.yml

@@ -0,0 +1,9 @@
+global:
+  alertmanager_api: "http://192.168.38.160:9093/api/v2/alerts"
+  interval: 1m
+  timeout: 10s
+
+
+url_config:
+  include:
+    - "./conf.d/example.yml"

go.mod

@@ -0,0 +1,11 @@
+module github.com/chentiangang/cruiser
+
+go 1.14
+
+require (
+	github.com/chentiangang/xlog v0.0.0-20190715073137-dc027dedf2e0
+	github.com/dgrijalva/jwt-go v3.2.0+incompatible
+	github.com/prometheus/client_golang v1.7.0
+	github.com/prometheus/common v0.10.0
+	gopkg.in/yaml.v2 v2.3.0
+)

go.sum

@@ -0,0 +1,109 @@
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main.go

@@ -0,0 +1,121 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"reflect"
+	"time"
+
+	"github.com/chentiangang/cruiser/modules"
+	"github.com/chentiangang/cruiser/modules/url"
+
+	"github.com/chentiangang/xlog"
+
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+	yaml "gopkg.in/yaml.v2"
+)
+
+var cfg modules.Config
+
+//const collectTime = time.Second * 10
+const filename = "./cruiser.yml"
+
+func NewCruiser(name string) modules.Cruiser {
+	if name == "url" {
+		return url.UrlConfig{}
+	}
+
+	panic(fmt.Sprintf("Not found %s\n", name))
+	return nil
+}
+
+func main() {
+	var addr = flag.String("listen-address", ":8080", "The address to listen on for HTTP requests.")
+	flag.Parse()
+
+	cfg.Task = make(chan modules.Cruiser, 50)
+
+	bs, err := ioutil.ReadFile(filename)
+	if err != nil {
+		panic(err)
+	}
+	err = yaml.Unmarshal(bs, &cfg)
+	if err != nil {
+		panic(err)
+	}
+
+	xlog.LogDebug("%+v", cfg)
+	go Run()
+
+	if !reflect.DeepEqual(cfg.UrlConfig, modules.UrlConfig{}) {
+		cruiser := NewCruiser("url")
+		err = cruiser.LoadConfig(&cfg)
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	close(cfg.Task)
+
+	http.Handle("/metrics", promhttp.Handler())
+	xlog.LogFatal("%s", http.ListenAndServe(*addr, nil))
+}
+
+func SendAlert(alert modules.Alert) {
+	var Alerts []modules.Alert
+	Alerts = append(Alerts, alert)
+
+	bs, err := json.Marshal(Alerts)
+	if err != nil {
+		xlog.LogError("%s", err)
+		panic(err)
+	}
+
+	//xlog.LogInfo("%s", bs)
+	client := &http.Client{}
+	req, err := http.NewRequest("POST", cfg.Global.AlertmanagerApi, bytes.NewReader(bs))
+
+	req.Header.Add("Content-Type", "application/json")
+	if err != nil {
+		panic(err)
+	}
+
+	_, err = client.Do(req)
+	if err != nil {
+		xlog.LogError("alert data: %s, error: %s", bs, err)
+		panic(err)
+	}
+	xlog.LogWarn("send alert: %s", bs)
+}
+
+func Run() {
+	for task := range cfg.Task {
+		xlog.LogDebug("%+v", task)
+		go func(i modules.Cruiser) {
+			ticker := time.NewTicker(i.GetInterval())
+			defer ticker.Stop()
+
+			// 启动完成后即发送一个请求，避免调试等待时间
+			alert := i.SendRequest()
+			if !reflect.DeepEqual(alert, modules.Alert{}) {
+				SendAlert(alert)
+			}
+
+			// 定时器
+			for {
+				select {
+				case <-ticker.C:
+					alert = i.SendRequest()
+					//xlog.LogDebug("%+v", alert)
+					if !reflect.DeepEqual(alert, modules.Alert{}) {
+						go SendAlert(alert)
+					}
+				}
+			}
+		}(task)
+	}
+}

modules/mode.go

@@ -0,0 +1,43 @@
+package modules
+
+import (
+	"time"
+
+	"github.com/prometheus/common/model"
+)
+
+type Config struct {
+	Global    Global    `yaml:"global"`
+	UrlConfig UrlConfig `yaml:"url_config"`
+	Task      chan Cruiser
+}
+
+type UrlConfig struct {
+	Include []string `yaml:"include"`
+}
+
+type Global struct {
+	AlertmanagerApi string         `yaml:"alertmanager_api"`
+	Interval        model.Duration `yaml:"interval,omitempty"`
+	Timeout         model.Duration `yaml:"timeout,omitempty"`
+}
+
+type Alert struct {
+	Labels       map[string]string `yaml:"labels,omitempty" json:"labels"`
+	Annotations  map[string]string `yaml:"annotations,omitempty" json:"annotations"`
+	GeneratorURL string            `yaml:"generatorURL" json:"generatorURL"`
+	//StartsAt     time.Time         `json:"startsAt"`
+	//EndsAt       time.Time         `json:"endsAt"`
+	//isEnd chan bool
+}
+
+type Cruiser interface {
+	// 加载配置文件
+	LoadConfig(cfg *Config) error
+
+	// 获取请求间隔
+	GetInterval() time.Duration
+
+	// 发送请求，返回报警信息
+	SendRequest() Alert
+}