Initial Notifiers implementation

internal/config.go

@@ -17,6 +17,7 @@ const (
 	envKeyCloudflareZone       = "CLOUDFLARE_ZONE"
 	envKeyOnChangeComment      = "ON_CHANGE_COMMENT"
 	envKeyCheckIntervalSeconds = "CHECK_INTERVAL_SECONDS"
+	envKeyNotifiers            = "NOTIFIERS"
 )
 
 type Config struct {
@@ -25,6 +26,7 @@ type Config struct {
 	ApiToken            string
 	CloudflareZone      string
 	OnChangeComment     string
+	Notifiers           []string
 	CheckInterval       time.Duration
 }
 
@@ -52,11 +54,12 @@ func NewConfig() Config {
 	}
 
 	return Config{
-		DnsRecordsToCheck:   parseDNSToCheck(os.Getenv(envKeyDnsToCheck)),
+		DnsRecordsToCheck:   parseCommaDelimited(os.Getenv(envKeyDnsToCheck)),
 		PublicIpResolverTag: os.Getenv(envKeyPublicIpResolverTag),
 		ApiToken:            os.Getenv(envKeyCloudflareApiKey),
 		CloudflareZone:      os.Getenv(envKeyCloudflareZone),
 		OnChangeComment:     os.Getenv(envKeyOnChangeComment),
+		Notifiers:           parseCommaDelimited(os.Getenv(envKeyNotifiers)),
 		CheckInterval:       time.Duration(checkInterval) * time.Second,
 	}
 }

internal/helpers.go

@@ -2,10 +2,10 @@ package internal
 
 import "strings"
 
-func parseDNSToCheck(data string) []string {
+func parseCommaDelimited(data string) []string {
 	out := make([]string, 0, strings.Count(data, ",")+1)
-	for _, dns := range strings.Split(data, ",") {
-		if w := strings.TrimSpace(dns); w != "" {
+	for _, item := range strings.Split(data, ",") {
+		if w := strings.TrimSpace(item); w != "" {
 			out = append(out, w)
 		}
 	}

internal/helpers_test.go

@@ -38,8 +38,8 @@ func Test_parseDNSToCheck(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if got := parseDNSToCheck(tt.args.data); !reflect.DeepEqual(got, tt.want) {
-				t.Errorf("parseDNSToCheck() = %v, want %v", got, tt.want)
+			if got := parseCommaDelimited(tt.args.data); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("parseCommaDelimited() = %v, want %v", got, tt.want)
 			}
 		})
 	}