mirror of
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113 lines
3.5 KiB
Go
113 lines
3.5 KiB
Go
package pushover
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"github.com/TwiN/gatus/v5/alerting/alert"
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"github.com/TwiN/gatus/v5/client"
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"github.com/TwiN/gatus/v5/core"
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)
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const (
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restAPIURL = "https://api.pushover.net/1/messages.json"
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defaultPriority = 0
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)
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// AlertProvider is the configuration necessary for sending an alert using Pushover
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type AlertProvider struct {
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// Key used to authenticate the application sending
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// See "Your Applications" on the dashboard, or add a new one: https://pushover.net/apps/build
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ApplicationToken string `yaml:"application-token"`
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// Key of the user or group the messages should be sent to
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UserKey string `yaml:"user-key"`
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// The title of your message, likely the application name
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// default: the name of your application in Pushover
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Title string `yaml:"title,omitempty"`
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// Priority of all messages, ranging from -2 (very low) to 2 (Emergency)
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// default: 0
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Priority int `yaml:"priority,omitempty"`
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// Sound of the messages (see: https://pushover.net/api#sounds)
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// default: "" (pushover)
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Sound string `yaml:"sound,omitempty"`
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// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
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DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
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}
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// IsValid returns whether the provider's configuration is valid
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func (provider *AlertProvider) IsValid() bool {
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if provider.Priority == 0 {
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provider.Priority = defaultPriority
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}
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return len(provider.ApplicationToken) == 30 && len(provider.UserKey) == 30 && provider.Priority >= -2 && provider.Priority <= 2
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}
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// Send an alert using the provider
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// Reference doc for pushover: https://pushover.net/api
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func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
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buffer := bytes.NewBuffer(provider.buildRequestBody(endpoint, alert, result, resolved))
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request, err := http.NewRequest(http.MethodPost, restAPIURL, buffer)
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if err != nil {
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return err
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}
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request.Header.Set("Content-Type", "application/json")
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response, err := client.GetHTTPClient(nil).Do(request)
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if err != nil {
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return err
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}
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defer response.Body.Close()
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if response.StatusCode > 399 {
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body, _ := io.ReadAll(response.Body)
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return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
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}
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return err
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}
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type Body struct {
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Token string `json:"token"`
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User string `json:"user"`
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Title string `json:"title,omitempty"`
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Message string `json:"message"`
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Priority int `json:"priority"`
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Sound string `json:"sound,omitempty"`
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}
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// buildRequestBody builds the request body for the provider
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func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
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var message string
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if resolved {
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message = fmt.Sprintf("RESOLVED: %s - %s", endpoint.DisplayName(), alert.GetDescription())
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} else {
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message = fmt.Sprintf("TRIGGERED: %s - %s", endpoint.DisplayName(), alert.GetDescription())
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}
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body, _ := json.Marshal(Body{
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Token: provider.ApplicationToken,
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User: provider.UserKey,
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Title: provider.Title,
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Message: message,
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Priority: provider.priority(),
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Sound: provider.Sound,
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})
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return body
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}
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func (provider *AlertProvider) priority() int {
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if provider.Priority == 0 {
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return defaultPriority
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}
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return provider.Priority
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}
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// GetDefaultAlert returns the provider's default alert configuration
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func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
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return provider.DefaultAlert
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}
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