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feat(altermanager): auto generate alertmanager config and reload if c…
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "os" | ||
|
|
||
| "github.com/BurntSushi/toml" | ||
| "go.uber.org/zap" | ||
| ) | ||
|
|
||
| type Host struct { | ||
| Address string `toml:"address"` | ||
| AlertEmails []string `toml:"alert-emails"` | ||
| } | ||
| type Config struct { | ||
| ListenAddress string `toml:"listen-address"` | ||
| RefreshIntervalSecond int `toml:"refresh-interval-second"` | ||
| Concurrency int `toml:"concurrency"` | ||
| AlertManager AlertManager `toml:"alertmanager"` | ||
| Hosts []Host `toml:"hosts"` | ||
| } | ||
| type AlertManager struct { | ||
| ReloadURL string `toml:"reload-url"` | ||
| ConfigPath string `toml:"config-path"` | ||
| SMTPSmarthost string `toml:"smtp-smarthost"` | ||
| SMTPFrom string `toml:"smtp-from"` | ||
| SMTPUsername string `toml:"smtp-username"` | ||
| SMTPPassword string `toml:"smtp-password"` | ||
| } | ||
|
|
||
| type AlertManagerYaml struct { | ||
| Global struct { | ||
| SMTPSmarthost string `yaml:"smtp_smarthost"` | ||
| SMTPFrom string `yaml:"smtp_from"` | ||
| SMTPAuthUsername string `yaml:"smtp_auth_username"` | ||
| SMTPAuthPassword string `yaml:"smtp_auth_password"` | ||
| ResolveTimeout string `yaml:"resolve_timeout"` | ||
| } `yaml:"global"` | ||
| Templates []string `yaml:"templates"` | ||
| Route struct { | ||
| GroupBy []string `yaml:"group_by"` | ||
| GroupWait string `yaml:"group_wait"` | ||
| GroupInterval string `yaml:"group_interval"` | ||
| RepeatInterval string `yaml:"repeat_interval"` | ||
| Receiver string `yaml:"receiver"` | ||
| Routes []struct { | ||
| Matchers []string `yaml:"matchers"` | ||
| Receiver string `yaml:"receiver"` | ||
| } `yaml:"routes"` | ||
| } `yaml:"route"` | ||
| Receivers []struct { | ||
| Name string `yaml:"name"` | ||
| EmailConfigs []struct { | ||
| To string `yaml:"to"` | ||
| } `yaml:"email_configs,omitempty"` | ||
| } `yaml:"receivers"` | ||
| } | ||
|
|
||
| func parseConfig() Config { | ||
| var c Config | ||
| _, err := toml.DecodeFile(*configFile, &c) | ||
| if err != nil { | ||
| logger.Error("Could not Decode toml configuration file", zap.Error(err)) | ||
| os.Exit(1) | ||
| } | ||
| return c | ||
| } | ||
|
|
||
| func genAlertManagerYaml(c Config) AlertManagerYaml { | ||
| var emailCount = make(map[string]int) | ||
|
|
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| var a AlertManagerYaml | ||
| a.Global.ResolveTimeout = "1m" | ||
| a.Global.SMTPAuthPassword = c.AlertManager.SMTPPassword | ||
| a.Global.SMTPAuthUsername = c.AlertManager.SMTPUsername | ||
| a.Global.SMTPFrom = c.AlertManager.SMTPFrom | ||
| a.Global.SMTPSmarthost = c.AlertManager.SMTPSmarthost | ||
|
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| a.Templates = []string{"/etc/alertmanager/template/*.tmpl"} | ||
|
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| a.Route.GroupBy = []string{"alert_email"} | ||
| a.Route.GroupWait = "30s" | ||
| a.Route.GroupInterval = "5m" | ||
| a.Route.RepeatInterval = "24h" | ||
| a.Route.Receiver = "default" | ||
|
|
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| for _, host := range c.Hosts { | ||
| for _, e := range host.AlertEmails { | ||
| emailCount[e]++ | ||
| } | ||
| } | ||
|
|
||
| for email := range emailCount { | ||
| a.Route.Routes = append(a.Route.Routes, struct { | ||
| Matchers []string `yaml:"matchers"` | ||
| Receiver string `yaml:"receiver"` | ||
| }{ | ||
| Matchers: []string{"alert_email=" + email}, | ||
| Receiver: email, | ||
| }) | ||
|
|
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| a.Receivers = append(a.Receivers, struct { | ||
| Name string `yaml:"name"` | ||
| EmailConfigs []struct { | ||
| To string `yaml:"to"` | ||
| } `yaml:"email_configs,omitempty"` | ||
| }{ | ||
| Name: email, | ||
| EmailConfigs: []struct { | ||
| To string `yaml:"to"` | ||
| }{ | ||
| { | ||
| To: email, | ||
| }, | ||
| }, | ||
| }) | ||
|
|
||
| } | ||
| a.Receivers = append(a.Receivers, struct { | ||
| Name string `yaml:"name"` | ||
| EmailConfigs []struct { | ||
| To string `yaml:"to"` | ||
| } `yaml:"email_configs,omitempty"` | ||
| }{Name: "default"}) | ||
|
|
||
| return a | ||
| } |
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