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fix(alerting): Resolve Telegram issue with bad payload when condition has " in it

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This commit is contained in:
TwiN 2022-10-20 15:22:27 -04:00
parent d20a41c7a7
commit 0eb6958085
2 changed files with 25 additions and 13 deletions
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28
alerting/provider/telegram/telegram.go
View File

@ -2,6 +2,7 @@ package telegram
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
@ -36,7 +37,7 @@ func (provider *AlertProvider) IsValid() bool {
// Send an alert using the provider
func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
buffer := bytes.NewBuffer([]byte(provider.buildRequestBody(endpoint, alert, result, resolved)))
buffer := bytes.NewBuffer(provider.buildRequestBody(endpoint, alert, result, resolved))
apiURL := provider.APIURL
if apiURL == "" {
apiURL = defaultAPIURL
@ -58,13 +59,19 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
return err
}
type Body struct {
ChatID string `json:"chat_id"`
Text string `json:"text"`
ParseMode string `json:"parse_mode"`
}
// buildRequestBody builds the request body for the provider
func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) string {
func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
var message, results string
if resolved {
message = fmt.Sprintf("An alert for *%s* has been resolved:\\n—\\n _healthcheck passing successfully %d time(s) in a row_\\n— ", endpoint.DisplayName(), alert.FailureThreshold)
message = fmt.Sprintf("An alert for *%s* has been resolved:\n—\n _healthcheck passing successfully %d time(s) in a row_\n— ", endpoint.DisplayName(), alert.FailureThreshold)
} else {
message = fmt.Sprintf("An alert for *%s* has been triggered:\\n—\\n _healthcheck failed %d time(s) in a row_\\n— ", endpoint.DisplayName(), alert.FailureThreshold)
message = fmt.Sprintf("An alert for *%s* has been triggered:\n—\n _healthcheck failed %d time(s) in a row_\n— ", endpoint.DisplayName(), alert.FailureThreshold)
}
for _, conditionResult := range result.ConditionResults {
var prefix string
@ -73,15 +80,20 @@ func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *
} else {
prefix = "❌"
}
results += fmt.Sprintf("%s - `%s`\\n", prefix, conditionResult.Condition)
results += fmt.Sprintf("%s - `%s`\n", prefix, conditionResult.Condition)
}
var text string
if len(alert.GetDescription()) > 0 {
text = fmt.Sprintf("⛑ *Gatus* \\n%s \\n*Description* \\n_%s_ \\n\\n*Condition results*\\n%s", message, alert.GetDescription(), results)
text = fmt.Sprintf("⛑ *Gatus* \n%s \n*Description* \n_%s_ \n\n*Condition results*\n%s", message, alert.GetDescription(), results)
} else {
text = fmt.Sprintf("⛑ *Gatus* \\n%s \\n*Condition results*\\n%s", message, results)
text = fmt.Sprintf("⛑ *Gatus* \n%s \n*Condition results*\n%s", message, results)
}
return fmt.Sprintf(`{"chat_id": "%s", "text": "%s", "parse_mode": "MARKDOWN"}`, provider.ID, text)
body, _ := json.Marshal(Body{
ChatID: provider.ID,
Text: text,
ParseMode: "MARKDOWN",
})
return body
}
// GetDefaultAlert returns the provider's default alert configuration

10
alerting/provider/telegram/telegram_test.go
View File

@ -124,14 +124,14 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
Provider: AlertProvider{ID: "123"},
Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
Resolved: false,
ExpectedBody: "{\"chat_id\": \"123\", \"text\": \"⛑ *Gatus* \\nAn alert for *endpoint-name* has been triggered:\\n—\\n _healthcheck failed 3 time(s) in a row_\\n— \\n*Description* \\n_description-1_ \\n\\n*Condition results*\\n❌ - `[CONNECTED] == true`\\n❌ - `[STATUS] == 200`\\n\", \"parse_mode\": \"MARKDOWN\"}",
ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been triggered:\\n—\\n _healthcheck failed 3 time(s) in a row_\\n— \\n*Description* \\n_description-1_ \\n\\n*Condition results*\\n❌ - `[CONNECTED] == true`\\n❌ - `[STATUS] == 200`\\n\",\"parse_mode\":\"MARKDOWN\"}",
},
{
Name: "resolved",
Provider: AlertProvider{ID: "123"},
Alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
Resolved: true,
ExpectedBody: "{\"chat_id\": \"123\", \"text\": \"⛑ *Gatus* \\nAn alert for *endpoint-name* has been resolved:\\n—\\n _healthcheck passing successfully 3 time(s) in a row_\\n— \\n*Description* \\n_description-2_ \\n\\n*Condition results*\\n✅ - `[CONNECTED] == true`\\n✅ - `[STATUS] == 200`\\n\", \"parse_mode\": \"MARKDOWN\"}",
ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been resolved:\\n—\\n _healthcheck passing successfully 3 time(s) in a row_\\n— \\n*Description* \\n_description-2_ \\n\\n*Condition results*\\n✅ - `[CONNECTED] == true`\\n✅ - `[STATUS] == 200`\\n\",\"parse_mode\":\"MARKDOWN\"}",
},
}
for _, scenario := range scenarios {
@ -147,11 +147,11 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
},
scenario.Resolved,
)
if body != scenario.ExpectedBody {
t.Errorf("expected %s, got %s", scenario.ExpectedBody, body)
if string(body) != scenario.ExpectedBody {
t.Errorf("expected:\n%s\ngot:\n%s", scenario.ExpectedBody, body)
}
out := make(map[string]interface{})
if err := json.Unmarshal([]byte(body), &out); err != nil {
if err := json.Unmarshal(body, &out); err != nil {
t.Error("expected body to be valid JSON, got error:", err.Error())
}
})