add entire query and headers as well

hook/hook.go

@@ -21,6 +21,8 @@ const (
 	SourcePayload       string = "payload"
 	SourceString        string = "string"
 	SourceEntirePayload string = "entire-payload"
+	SourceEntireQuery   string = "entire-query"
+	SourceEntireHeaders string = "entire-headers"
 )
 
 // CheckPayloadSignature calculates and verifies SHA1 signature of the given payload
@@ -159,6 +161,22 @@ func (ha *Argument) Get(headers, query, payload *map[string]interface{}) (string
 			return "", false
 		}
 
+		return string(r), true
+	case SourceEntireHeaders:
+		r, err := json.Marshal(headers)
+
+		if err != nil {
+			return "", false
+		}
+
+		return string(r), true
+	case SourceEntireQuery:
+		r, err := json.Marshal(query)
+
+		if err != nil {
+			return "", false
+		}
+
 		return string(r), true
 	}