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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;
import com.fasterxml.jackson.core.JsonGenerator;
import java.io.IOException;
import java.time.Duration;
import java.time.Instant;
/**
* @author bjorncs
*/
class FormatUtil {
private FormatUtil() {}
static void writeSecondsField(JsonGenerator generator, String fieldName, Instant instant) throws IOException {
writeSecondsField(generator, fieldName, instant.toEpochMilli());
}
static void writeSecondsField(JsonGenerator generator, String fieldName, Duration duration) throws IOException {
writeSecondsField(generator, fieldName, duration.toMillis());
}
static void writeSecondsField(JsonGenerator generator, String fieldName, double seconds) throws IOException {
writeSecondsField(generator, fieldName, (long)(seconds * 1000));
}
static void writeSecondsField(JsonGenerator generator, String fieldName, long milliseconds) throws IOException {
generator.writeFieldName(fieldName);
generator.writeRawValue(toSecondsString(milliseconds));
}
/** @return a string with number of seconds with 3 decimals */
static String toSecondsString(long milliseconds) {
StringBuilder builder = new StringBuilder().append(milliseconds / 1000L).append('.');
long decimals = milliseconds % 1000;
if (decimals < 100) {
builder.append('0');
if (decimals < 10) {
builder.append('0');
}
}
return builder.append(decimals).toString();
}
}
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