Refactor: move method to get annotated double value
- Move to AnnotationKeys to remove code duplication
Change-Id: Icf8b4322fc88e43ab531402d0e403a38d186f48e
diff --git a/core/api/src/main/java/org/onlab/onos/net/AnnotationKeys.java b/core/api/src/main/java/org/onlab/onos/net/AnnotationKeys.java
index eace91c..5777022 100644
--- a/core/api/src/main/java/org/onlab/onos/net/AnnotationKeys.java
+++ b/core/api/src/main/java/org/onlab/onos/net/AnnotationKeys.java
@@ -28,4 +28,23 @@
* Annotation key for latency.
*/
public static final String LATENCY = "latency";
+
+ /**
+ * Returns the value annotated object for the specified annotation key.
+ * The annotated value is expected to be String that can be parsed as double.
+ * If parsing fails, the returned value will be 1.0.
+ *
+ * @param annotated annotated object whose annotated value is obtained
+ * @param key key of annotation
+ * @return double value of annotated object for the specified key
+ */
+ public static double getAnnotatedValue(Annotated annotated, String key) {
+ double value;
+ try {
+ value = Double.parseDouble(annotated.annotations().value(key));
+ } catch (NumberFormatException e) {
+ value = 1.0;
+ }
+ return value;
+ }
}