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+/*
+ * =========================================================================================
+ * Copyright © 2013-2015 the kamon project <http://kamon.io/>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the
+ * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific language governing permissions
+ * and limitations under the License.
+ * =========================================================================================
+ */
+
+package kamon.annotation;
+
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+
+/**
+ * A marker annotation to define a method as a timed.
+ * <p>
+ * <p>
+ * Given a method like this:
+ * <pre><code>
+ * {@literal @}Timed(name = "coolName", tags="""${{'my-cool-tag':'my-cool-value'}}""")
+ * public String coolName(String name) {
+ * return "Hello " + name;
+ * }
+ * </code></pre>
+ * <p>
+ * <p>
+ * A histogram for the defining method with the name {@code coolName} will be created and each time the
+ * {@code #coolName(String)} method is invoked, the latency of execution will be recorded.
+ */
+@Target(ElementType.METHOD)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Time {
+ /**
+ * @return The histogram's name.
+ */
+ String name();
+
+ /**
+ * Tags are a way of adding dimensions to metrics,
+ * these are constructed using EL syntax e.g. """${{'algorithm':'1','env':'production'}}"""
+ *
+ * @return the tags associated to the histogram
+ */
+ String tags() default "";
+}