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Message.scala
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Message.scala
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.openwhisk.common
import org.apache.openwhisk.core.entity.InvokerInstanceId
case object GracefulShutdown
case object Enable
// States an Invoker can be in
sealed trait InvokerState {
val asString: String
val isUsable: Boolean
}
object InvokerState {
// Invokers in this state can be used to schedule workload to
sealed trait Usable extends InvokerState { val isUsable = true }
// No workload should be scheduled to invokers in this state
sealed trait Unusable extends InvokerState { val isUsable = false }
// A completely healthy invoker, pings arriving fine, no system errors
case object Healthy extends Usable { val asString = "up" }
// The invoker can not create a container
case object Unhealthy extends Unusable { val asString = "unhealthy" }
// Pings are arriving fine, the invoker does not respond with active-acks in the expected time though
case object Unresponsive extends Unusable { val asString = "unresponsive" }
// The invoker is down
case object Offline extends Unusable { val asString = "down" }
}
/**
* Describes an abstract invoker. An invoker is a local container pool manager that
* is in charge of the container life cycle management.
*
* @param id a unique instance identifier for the invoker
* @param status it status (healthy, unhealthy, unresponsive, offline)
*/
case class InvokerHealth(id: InvokerInstanceId, status: InvokerState) {
override def equals(obj: scala.Any): Boolean = obj match {
case that: InvokerHealth => that.id == this.id && that.status == this.status
case _ => false
}
override def toString = s"InvokerHealth($id, $status)"
}