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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.logging;
/**
* Carry information about how the query covered the document corpus.
*/
public class Coverage {
private final long docs;
private final long active;
private final long targetActive;
private final int degradedReason;
private final static int DEGRADED_BY_MATCH_PHASE = 1;
private final static int DEGRADED_BY_TIMEOUT = 2;
private final static int DEGRADED_BY_ADAPTIVE_TIMEOUT = 4;
public Coverage(long docs, long active, long targetActive, int degradedReason) {
this.docs = docs;
this.active = active;
this.targetActive = targetActive;
this.degradedReason = degradedReason;
}
public long getDocs() {
return docs;
}
public long getActive() {
return active;
}
public static int toDegradation(boolean degradeByMatchPhase, boolean degradedByTimeout, boolean degradedByAdaptiveTimeout) {
int v = 0;
if (degradeByMatchPhase) {
v |= DEGRADED_BY_MATCH_PHASE;
}
if (degradedByTimeout) {
v |= DEGRADED_BY_TIMEOUT;
}
if (degradedByAdaptiveTimeout) {
v |= DEGRADED_BY_ADAPTIVE_TIMEOUT;
}
return v;
}
public long getTargetActive() { return targetActive; }
public boolean isDegraded() { return (degradedReason != 0) || isDegradedByNonIdealState(); }
public boolean isDegradedByMatchPhase() { return (degradedReason & DEGRADED_BY_MATCH_PHASE) != 0; }
public boolean isDegradedByTimeout() { return (degradedReason & DEGRADED_BY_TIMEOUT) != 0; }
public boolean isDegradedByAdapativeTimeout() { return (degradedReason & DEGRADED_BY_ADAPTIVE_TIMEOUT) != 0; }
public boolean isDegradedByNonIdealState() { return (degradedReason == 0) && (getResultPercentage() != 100);}
/**
* An int between 0 (inclusive) and 100 (inclusive) representing how many
* percent coverage the result sets this Coverage instance contains information
* about had.
*/
public int getResultPercentage() {
long total = targetActive;
if (docs < total) {
return (int) Math.round(docs * 100.0d / total);
}
if ((total == 0) && isDegradedByTimeout()) {
return 0;
}
return 100;
}
}
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