/
OneLineLogFormat.kt
65 lines (59 loc) · 2.05 KB
/
OneLineLogFormat.kt
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/*
* Copyright (C) 2022 Square, Inc.
*
* Licensed 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 okhttp3.curl.logging
import java.io.PrintWriter
import java.io.StringWriter
import java.time.Instant
import java.time.ZoneOffset
import java.time.format.DateTimeFormatterBuilder
import java.time.temporal.ChronoField.HOUR_OF_DAY
import java.time.temporal.ChronoField.MINUTE_OF_HOUR
import java.time.temporal.ChronoField.NANO_OF_SECOND
import java.time.temporal.ChronoField.SECOND_OF_MINUTE
import java.util.logging.Formatter
import java.util.logging.LogRecord
/**
* Is Java8 Data and Time really this bad, or is writing this on a plane from just javadocs a bad
* idea?
*
* Why so much construction?
*/
class OneLineLogFormat : Formatter() {
private val d =
DateTimeFormatterBuilder()
.appendValue(HOUR_OF_DAY, 2)
.appendLiteral(':')
.appendValue(MINUTE_OF_HOUR, 2)
.optionalStart()
.appendLiteral(':')
.appendValue(SECOND_OF_MINUTE, 2)
.optionalStart()
.appendFraction(NANO_OF_SECOND, 3, 3, true)
.toFormatter()
private val offset = ZoneOffset.systemDefault()
override fun format(record: LogRecord): String {
val message = formatMessage(record)
val time = Instant.ofEpochMilli(record.millis).atZone(offset)
return if (record.thrown != null) {
val sw = StringWriter(4096)
val pw = PrintWriter(sw)
record.thrown.printStackTrace(pw)
String.format("%s\t%s%n%s%n", time.format(d), message, sw.toString())
} else {
String.format("%s\t%s%n", time.format(d), message)
}
}
}