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/*
* =========================================================================================
* Copyright © 2013 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.metric
/**
* Identify a `thing` that is being monitored by Kamon. A [[kamon.metric.Entity]] is used to identify tracked `things`
* in both the metrics recording and reporting sides. Only the name and category fields are used with determining
* equality between two entities.
*
* // TODO: Find a better word for `thing`.
*/
class Entity(val name: String, val category: String, val metadata: Map[String, String]) {
override def equals(o: Any): Boolean = {
if (this eq o.asInstanceOf[AnyRef])
true
else if ((o.asInstanceOf[AnyRef] eq null) || !o.isInstanceOf[Entity])
false
else {
val thatAsEntity = o.asInstanceOf[Entity]
category == thatAsEntity.category && name == thatAsEntity.name
}
}
override def hashCode: Int = {
var result: Int = name.hashCode
result = 31 * result + category.hashCode
return result
}
}
object Entity {
def apply(name: String, category: String): Entity =
apply(name, category, Map.empty)
def apply(name: String, category: String, metadata: Map[String, String]): Entity =
new Entity(name, category, metadata)
def create(name: String, category: String): Entity =
apply(name, category, Map.empty)
def create(name: String, category: String, metadata: Map[String, String]): Entity =
new Entity(name, category, metadata)
}
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