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// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.api.integration;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.HostName;
import com.yahoo.vespa.hosted.controller.api.integration.routing.RotationStatus;
import com.yahoo.vespa.hosted.controller.api.integration.zone.ZoneId;
import java.util.Collections;
import java.util.Map;
/**
* A service which returns metric values on request
*
* @author bratseth
*/
public interface MetricsService {
ApplicationMetrics getApplicationMetrics(ApplicationId application);
DeploymentMetrics getDeploymentMetrics(ApplicationId application, ZoneId zone);
// TODO: Remove default once implementation catches up
/**
* Get status for a global rotation
* @param rotationName The fully qualified domain name of the rotation
*/
default Map<HostName, RotationStatus> getRotationStatus(String rotationName) {
return Collections.emptyMap();
}
Map<String, SystemMetrics> getSystemMetrics(ApplicationId application, ZoneId zone);
class DeploymentMetrics {
private final double queriesPerSecond;
private final double writesPerSecond;
private final long documentCount;
private final double queryLatencyMillis;
private final double writeLatencyMillis;
public DeploymentMetrics(double queriesPerSecond, double writesPerSecond,
long documentCount,
double queryLatencyMillis, double writeLatencyMillis) {
this.queriesPerSecond = queriesPerSecond;
this.writesPerSecond = writesPerSecond;
this.documentCount = documentCount;
this.queryLatencyMillis = queryLatencyMillis;
this.writeLatencyMillis = writeLatencyMillis;
}
public double queriesPerSecond() { return queriesPerSecond; }
public double writesPerSecond() { return writesPerSecond; }
public long documentCount() { return documentCount; }
public double queryLatencyMillis() { return queryLatencyMillis; }
public double writeLatencyMillis() { return writeLatencyMillis; }
}
class ApplicationMetrics {
private final double queryServiceQuality;
private final double writeServiceQuality;
public ApplicationMetrics(double queryServiceQuality, double writeServiceQuality) {
this.queryServiceQuality = queryServiceQuality;
this.writeServiceQuality = writeServiceQuality;
}
/** Returns the quality of service for queries as a number between 1 (perfect) and 0 (none) */
public double queryServiceQuality() { return queryServiceQuality; }
/** Returns the quality of service for writes as a number between 1 (perfect) and 0 (none) */
public double writeServiceQuality() { return writeServiceQuality; }
}
class SystemMetrics {
private final double cpuUtil;
private final double memUtil;
private final double diskUtil;
/**
* @param cpuUtil percentage of system cpu utilization
* @param memUtil percentage of system memory utilization
* @param diskUtil percentage of system disk utilization
*/
public SystemMetrics(double cpuUtil, double memUtil, double diskUtil) {
this.cpuUtil = cpuUtil;
this.memUtil = memUtil;
this.diskUtil = diskUtil;
}
/** @return the percentage of cpu utilization **/
public double cpuUtil() { return cpuUtil; }
/** @return the percentage of memory utilization **/
public double memUtil() { return memUtil; }
/** @return the percentage of disk utilization **/
public double diskUtil() { return diskUtil; }
public static class Builder {
private double cpuUtil;
private double memUtil;
private double diskUtil;
public void setCpuUtil(double cpuUtil) {
this.cpuUtil = cpuUtil;
}
public void setMemUtil(double memUtil) {
this.memUtil = memUtil;
}
public void setDiskUtil(double diskUtil) {
this.diskUtil = diskUtil;
}
public SystemMetrics build() { return new SystemMetrics(cpuUtil, memUtil, diskUtil); }
}
}
}
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