Statuscake: Implement Equals function using TestTags (#610)

* Implement Equals function using TestTags

It is mentioned in a comment in the code itself but because of the
discrepency between the fields in the EndpointMonitor CR and the
Statuscake API it is not immediately clear how to compare an old monitor
with an updated monitor. The way I have elected to check this is to use
the TestTags field to include some kind of identifier that should be
updated on any change. So if the tags have changed then the monitor
should be updated.

* Remove already merged content

pkg/monitors/statuscake/statuscake-mappers.go

@@ -1,7 +1,10 @@
 package statuscake
 
 import (
+	"strings"
+
 	statuscake "github.com/StatusCakeDev/statuscake-go"
+	endpointmonitorv1alpha1 "github.com/stakater/IngressMonitorController/v2/api/v1alpha1"
 	"github.com/stakater/IngressMonitorController/v2/pkg/models"
 )
 
@@ -11,6 +14,10 @@ func StatusCakeMonitorMonitorToBaseMonitorMapper(statuscakeData StatusCakeMonito
 	m.Name = statuscakeData.WebsiteName
 	m.URL = statuscakeData.WebsiteURL
 	m.ID = statuscakeData.TestID
+
+	var providerConfig endpointmonitorv1alpha1.StatusCakeConfig
+	providerConfig.TestTags = strings.Join(statuscakeData.Tags, ",")
+	m.Config = &providerConfig
 	return &m
 }
 
@@ -20,6 +27,10 @@ func StatusCakeApiResponseDataToBaseMonitorMapper(statuscakeData statuscake.Upti
 	m.Name = statuscakeData.Data.Name
 	m.URL = statuscakeData.Data.WebsiteURL
 	m.ID = statuscakeData.Data.ID
+
+	var providerConfig endpointmonitorv1alpha1.StatusCakeConfig
+	providerConfig.TestTags = strings.Join(statuscakeData.Data.Tags, ",")
+	m.Config = &providerConfig
 	return &m
 }
 

pkg/monitors/statuscake/statuscake-monitor.go

@@ -34,8 +34,17 @@ type StatusCakeMonitorService struct {
 }
 
 func (monitor *StatusCakeMonitorService) Equal(oldMonitor models.Monitor, newMonitor models.Monitor) bool {
-	// TODO: Retrieve oldMonitor config and compare it here
-	return false
+	// Since there is a discrepency between the fields in the endpointmonitor CR and the statuscake API
+	// use the tags to define a last updated by tags. This ensures we are not ratelimited by statuscake.
+	oldConf := oldMonitor.Config.(*endpointmonitorv1alpha1.StatusCakeConfig)
+	newConf := newMonitor.Config.(*endpointmonitorv1alpha1.StatusCakeConfig)
+	if oldConf.TestTags != newConf.TestTags {
+		msg := "Found a difference between the old TestTags and new TestTags. Updating the UptimeCheck..."
+		log.Info(msg, "Old Tags", oldConf.TestTags, "New Tags", newConf.TestTags)
+		return false
+	} else {
+		return true
+	}
 }
 
 // buildUpsertForm function is used to create the form needed to Add or update a monitor
@@ -219,7 +228,7 @@ func buildUpsertForm(m models.Monitor, cgroup string) url.Values {
 	if providerConfig != nil && providerConfig.Confirmation > 0 {
 		f.Add("confirmation", strconv.Itoa(providerConfig.Confirmation))
 	}
-	if providerConfig != nil {
+	if providerConfig != nil && len(providerConfig.FindString) > 0 {
 		f.Add("find_string", providerConfig.FindString)
 	}
 	if providerConfig != nil && len(providerConfig.RawPostData) > 0 {