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// Copyright 2019 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.jdisc.metric;
import com.yahoo.jdisc.Metric;
import com.yahoo.jrt.TransportMetrics;
import java.util.function.ToLongFunction;
import static com.yahoo.jrt.TransportMetrics.*;
/**
* Emits jrt metrics
*
* @author bjorncs
*/
class JrtMetrics {
private final TransportMetrics transportMetrics = TransportMetrics.getInstance();
private final Metric metric;
private volatile Snapshot previousSnapshot;
JrtMetrics(Metric metric) {
this.metric = metric;
}
void emitMetrics() {
Snapshot snapshot = transportMetrics.snapshot();
increment("jrt.transport.tls-certificate-verification-failures", Snapshot::tlsCertificateVerificationFailures, snapshot);
increment("jrt.transport.peer-authorization-failures", Snapshot::peerAuthorizationFailures, snapshot);
increment("jrt.transport.server.tls-connections-established", Snapshot::serverTlsConnectionsEstablished, snapshot);
increment("jrt.transport.client.tls-connections-established", Snapshot::clientTlsConnectionsEstablished, snapshot);
increment("jrt.transport.server.unencrypted-connections-established", Snapshot::serverUnencryptedConnectionsEstablished, snapshot);
increment("jrt.transport.client.unencrypted-connections-established", Snapshot::clientUnencryptedConnectionsEstablished, snapshot);
previousSnapshot = snapshot;
}
private void increment(String metricName, ToLongFunction<Snapshot> metricGetter, Snapshot snapshot) {
long currentValue = metricGetter.applyAsLong(snapshot);
long increment = previousSnapshot != null
? currentValue - metricGetter.applyAsLong(previousSnapshot)
: currentValue;
metric.add(metricName, increment, null);
}
}
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