gatus/alerting/provider/mattermost/mattermost.go
2021-09-06 13:28:35 -04:00

95 lines
2.9 KiB
Go

package mattermost
import (
"fmt"
"net/http"
"github.com/TwinProduction/gatus/alerting/alert"
"github.com/TwinProduction/gatus/alerting/provider/custom"
"github.com/TwinProduction/gatus/client"
"github.com/TwinProduction/gatus/core"
)
// AlertProvider is the configuration necessary for sending an alert using Mattermost
type AlertProvider struct {
WebhookURL string `yaml:"webhook-url"`
// ClientConfig is the configuration of the client used to communicate with the provider's target
ClientConfig *client.Config `yaml:"client"`
// DefaultAlert is the default alert configuration to use for services with an alert of the appropriate type
DefaultAlert *alert.Alert `yaml:"default-alert"`
}
// IsValid returns whether the provider's configuration is valid
func (provider *AlertProvider) IsValid() bool {
if provider.ClientConfig == nil {
provider.ClientConfig = client.GetDefaultConfig()
}
return len(provider.WebhookURL) > 0
}
// ToCustomAlertProvider converts the provider into a custom.AlertProvider
func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, alert *alert.Alert, result *core.Result, resolved bool) *custom.AlertProvider {
var message string
var color string
if resolved {
message = fmt.Sprintf("An alert for *%s* has been resolved after passing successfully %d time(s) in a row", service.Name, alert.SuccessThreshold)
color = "#36A64F"
} else {
message = fmt.Sprintf("An alert for *%s* has been triggered due to having failed %d time(s) in a row", service.Name, alert.FailureThreshold)
color = "#DD0000"
}
var results string
for _, conditionResult := range result.ConditionResults {
var prefix string
if conditionResult.Success {
prefix = ":white_check_mark:"
} else {
prefix = ":x:"
}
results += fmt.Sprintf("%s - `%s`\\n", prefix, conditionResult.Condition)
}
var description string
if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
description = ":\\n> " + alertDescription
}
return &custom.AlertProvider{
URL: provider.WebhookURL,
Method: http.MethodPost,
ClientConfig: provider.ClientConfig,
Body: fmt.Sprintf(`{
"text": "",
"username": "gatus",
"icon_url": "https://raw.githubusercontent.com/TwinProduction/gatus/master/static/logo.png",
"attachments": [
{
"title": ":rescue_worker_helmet: Gatus",
"fallback": "Gatus - %s",
"text": "%s%s",
"short": false,
"color": "%s",
"fields": [
{
"title": "URL",
"value": "%s",
"short": false
},
{
"title": "Condition results",
"value": "%s",
"short": false
}
]
}
]
}`, message, message, description, color, service.URL, results),
Headers: map[string]string{"Content-Type": "application/json"},
}
}
// GetDefaultAlert returns the provider's default alert configuration
func (provider AlertProvider) GetDefaultAlert() *alert.Alert {
return provider.DefaultAlert
}