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

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This commit is contained in:
TwiN 2022-10-20 14:45:42 -04:00
parent c619066e25
commit da24b7e8ac
2 changed files with 51 additions and 29 deletions
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68
alerting/provider/slack/slack.go
View File

@ -2,6 +2,7 @@ package slack
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
@ -59,9 +60,28 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
return err
}
type Body struct {
Text string `json:"text"`
Attachments []Attachment `json:"attachments"`
}
type Attachment struct {
Title string `json:"title"`
Text string `json:"text"`
Short bool `json:"short"`
Color string `json:"color"`
Fields []Field `json:"fields"`
}
type Field struct {
Title string `json:"title"`
Value string `json:"value"`
Short bool `json:"short"`
}
// buildRequestBody builds the request body for the provider
func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) string {
var message, color, results string
func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
var message, color string
if resolved {
message = fmt.Sprintf("An alert for *%s* has been resolved after passing successfully %d time(s) in a row", endpoint.DisplayName(), alert.SuccessThreshold)
color = "#36A64F"
@ -69,37 +89,39 @@ func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *
message = fmt.Sprintf("An alert for *%s* has been triggered due to having failed %d time(s) in a row", endpoint.DisplayName(), alert.FailureThreshold)
color = "#DD0000"
}
for _, conditionResult := range result.ConditionResults {
fields := make([]Field, len(result.ConditionResults))
for i, 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)
fields[i] = Field{
Value: fmt.Sprintf("%s - `%s`", prefix, conditionResult.Condition),
Short: false,
}
if i == 0 {
fields[i].Title = "Condition results"
}
}
var description string
if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
description = ":\\n> " + alertDescription
description = ":\n> " + alertDescription
}
return fmt.Sprintf(`{
"text": "",
"attachments": [
{
"title": ":helmet_with_white_cross: Gatus",
"text": "%s%s",
"short": false,
"color": "%s",
"fields": [
{
"title": "Condition results",
"value": "%s",
"short": false
}
]
}
]
}`, message, description, color, results)
body, _ := json.Marshal(Body{
Text: "",
Attachments: []Attachment{
{
Title: ":helmet_with_white_cross: Gatus",
Text: message + description,
Short: false,
Color: color,
Fields: fields,
},
},
})
return body
}
// getWebhookURLForGroup returns the appropriate Webhook URL integration to for a given group

12
alerting/provider/slack/slack_test.go
View File

@ -153,7 +153,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
Endpoint: core.Endpoint{Name: "name"},
Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
Resolved: false,
ExpectedBody: "{\n \"text\": \"\",\n \"attachments\": [\n {\n \"title\": \":helmet_with_white_cross: Gatus\",\n \"text\": \"An alert for *name* has been triggered due to having failed 3 time(s) in a row:\\n> description-1\",\n \"short\": false,\n \"color\": \"#DD0000\",\n \"fields\": [\n {\n \"title\": \"Condition results\",\n \"value\": \":x: - `[CONNECTED] == true`\\n:x: - `[STATUS] == 200`\\n\",\n \"short\": false\n }\n ]\n }\n ]\n}",
ExpectedBody: "{\"text\":\"\",\"attachments\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"text\":\"An alert for *name* has been triggered due to having failed 3 time(s) in a row:\\n\\u003e description-1\",\"short\":false,\"color\":\"#DD0000\",\"fields\":[{\"title\":\"Condition results\",\"value\":\":x: - `[CONNECTED] == true`\",\"short\":false},{\"title\":\"\",\"value\":\":x: - `[STATUS] == 200`\",\"short\":false}]}]}",
},
{
Name: "triggered-with-group",
@ -161,7 +161,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
Endpoint: core.Endpoint{Name: "name", Group: "group"},
Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
Resolved: false,
ExpectedBody: "{\n \"text\": \"\",\n \"attachments\": [\n {\n \"title\": \":helmet_with_white_cross: Gatus\",\n \"text\": \"An alert for *group/name* has been triggered due to having failed 3 time(s) in a row:\\n> description-1\",\n \"short\": false,\n \"color\": \"#DD0000\",\n \"fields\": [\n {\n \"title\": \"Condition results\",\n \"value\": \":x: - `[CONNECTED] == true`\\n:x: - `[STATUS] == 200`\\n\",\n \"short\": false\n }\n ]\n }\n ]\n}",
ExpectedBody: "{\"text\":\"\",\"attachments\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"text\":\"An alert for *group/name* has been triggered due to having failed 3 time(s) in a row:\\n\\u003e description-1\",\"short\":false,\"color\":\"#DD0000\",\"fields\":[{\"title\":\"Condition results\",\"value\":\":x: - `[CONNECTED] == true`\",\"short\":false},{\"title\":\"\",\"value\":\":x: - `[STATUS] == 200`\",\"short\":false}]}]}",
},
{
Name: "resolved",
@ -169,7 +169,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
Endpoint: core.Endpoint{Name: "name"},
Alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
Resolved: true,
ExpectedBody: "{\n \"text\": \"\",\n \"attachments\": [\n {\n \"title\": \":helmet_with_white_cross: Gatus\",\n \"text\": \"An alert for *name* has been resolved after passing successfully 5 time(s) in a row:\\n> description-2\",\n \"short\": false,\n \"color\": \"#36A64F\",\n \"fields\": [\n {\n \"title\": \"Condition results\",\n \"value\": \":white_check_mark: - `[CONNECTED] == true`\\n:white_check_mark: - `[STATUS] == 200`\\n\",\n \"short\": false\n }\n ]\n }\n ]\n}",
ExpectedBody: "{\"text\":\"\",\"attachments\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"text\":\"An alert for *name* has been resolved after passing successfully 5 time(s) in a row:\\n\\u003e description-2\",\"short\":false,\"color\":\"#36A64F\",\"fields\":[{\"title\":\"Condition results\",\"value\":\":white_check_mark: - `[CONNECTED] == true`\",\"short\":false},{\"title\":\"\",\"value\":\":white_check_mark: - `[STATUS] == 200`\",\"short\":false}]}]}",
},
{
Name: "resolved-with-group",
@ -177,7 +177,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
Endpoint: core.Endpoint{Name: "name", Group: "group"},
Alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
Resolved: true,
ExpectedBody: "{\n \"text\": \"\",\n \"attachments\": [\n {\n \"title\": \":helmet_with_white_cross: Gatus\",\n \"text\": \"An alert for *group/name* has been resolved after passing successfully 5 time(s) in a row:\\n> description-2\",\n \"short\": false,\n \"color\": \"#36A64F\",\n \"fields\": [\n {\n \"title\": \"Condition results\",\n \"value\": \":white_check_mark: - `[CONNECTED] == true`\\n:white_check_mark: - `[STATUS] == 200`\\n\",\n \"short\": false\n }\n ]\n }\n ]\n}",
ExpectedBody: "{\"text\":\"\",\"attachments\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"text\":\"An alert for *group/name* has been resolved after passing successfully 5 time(s) in a row:\\n\\u003e description-2\",\"short\":false,\"color\":\"#36A64F\",\"fields\":[{\"title\":\"Condition results\",\"value\":\":white_check_mark: - `[CONNECTED] == true`\",\"short\":false},{\"title\":\"\",\"value\":\":white_check_mark: - `[STATUS] == 200`\",\"short\":false}]}]}",
},
}
for _, scenario := range scenarios {
@ -193,11 +193,11 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
},
scenario.Resolved,
)
if body != scenario.ExpectedBody {
if string(body) != scenario.ExpectedBody {
t.Errorf("expected %s, got %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())
}
})