gatus/alerting/provider/slack/slack.go

73 lines
2.2 KiB
Go

package slack
import (
"fmt"
"net/http"
"github.com/TwinProduction/gatus/alerting/alert"
"github.com/TwinProduction/gatus/alerting/provider/custom"
"github.com/TwinProduction/gatus/core"
)
// AlertProvider is the configuration necessary for sending an alert using Slack
type AlertProvider struct {
WebhookURL string `yaml:"webhook-url"` // Slack webhook URL
// 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 {
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, color, results 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"
}
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)
}
return &custom.AlertProvider{
URL: provider.WebhookURL,
Method: http.MethodPost,
Body: fmt.Sprintf(`{
"text": "",
"attachments": [
{
"title": ":helmet_with_white_cross: Gatus",
"text": "%s:\n> %s",
"short": false,
"color": "%s",
"fields": [
{
"title": "Condition results",
"value": "%s",
"short": false
}
]
}
]
}`, message, alert.GetDescription(), color, 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
}