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Document debug logging.
Also refine the formatting of TaskRunner logging. Before: [2019-12-30 16:43:19] Q1 starting: OkHttp ConnectionPool [2019-12-30 16:43:19] Q1 scheduled after 300 s: OkHttp ConnectionPool [2019-12-30 16:43:19] Q1 finished in 94 µs: OkHttp ConnectionPool [2019-12-30 16:43:19] Q359 scheduled after 0 µs: OkHttp www.youtube.com applyAndAckSettings [2019-12-30 16:43:19] Q359 starting: OkHttp www.youtube.com applyAndAckSettings [2019-12-30 16:43:19] Q361 schedule canceled (queue is shutdown): OkHttp www.youtube.com onSettings [2019-12-30 16:43:19] Q359 finished in 382 µs: OkHttp www.youtube.com applyAndAckSettings [2019-12-30 16:43:20] Q1 scheduled after 0 µs: OkHttp ConnectionPool [2019-12-30 16:43:20] Q365 scheduled after 0 µs: OkHttp android-developers.googleblog.com applyAndAckSettings [2019-12-30 16:43:20] Q1 starting: OkHttp ConnectionPool [2019-12-30 16:43:20] Q365 starting: OkHttp android-developers.googleblog.com applyAndAckSettings [2019-12-30 16:43:20] Q1 scheduled after 300 s: OkHttp ConnectionPool [2019-12-30 16:43:20] Q1 finished in 151 µs: OkHttp ConnectionPool After: [2019-12-30 16:43:19] Q10001 starting : OkHttp ConnectionPool [2019-12-30 16:43:19] Q10001 run again after 300 s : OkHttp ConnectionPool [2019-12-30 16:43:19] Q10001 finished run in 94 µs: OkHttp ConnectionPool [2019-12-30 16:43:19] Q10359 scheduled after 0 µs: OkHttp www.youtube.com applyAndAckSettings [2019-12-30 16:43:19] Q10359 starting : OkHttp www.youtube.com applyAndAckSettings [2019-12-30 16:43:19] Q10361 schedule canceled (queue is shutdown): OkHttp www.youtube.com onSettings [2019-12-30 16:43:19] Q10359 finished run in 382 µs: OkHttp www.youtube.com applyAndAckSettings [2019-12-30 16:43:20] Q10001 scheduled after 0 µs: OkHttp ConnectionPool [2019-12-30 16:43:20] Q10365 scheduled after 0 µs: OkHttp android-developers.googleblog.com applyAndAckSettings [2019-12-30 16:43:20] Q10001 starting : OkHttp ConnectionPool [2019-12-30 16:43:20] Q10365 starting : OkHttp android-developers.googleblog.com applyAndAckSettings [2019-12-30 16:43:20] Q10001 run again after 300 s : OkHttp ConnectionPool [2019-12-30 16:43:20] Q10001 finished run in 151 µs: OkHttp ConnectionPool
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/*
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* Copyright (C) 2019 Square, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package okhttp3
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import okhttp3.internal.concurrent.TaskRunner
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import okhttp3.internal.http2.Http2
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import java.util.concurrent.CopyOnWriteArraySet
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import java.util.logging.ConsoleHandler
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import java.util.logging.Level
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import java.util.logging.LogRecord
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import java.util.logging.Logger
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import java.util.logging.SimpleFormatter
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import kotlin.reflect.KClass
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object OkHttpDebugLogging {
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// Keep references to loggers to prevent their configuration from being GC'd.
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private val configuredLoggers = CopyOnWriteArraySet<Logger>()
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fun enableHttp2() = enable(Http2::class)
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fun enableTaskRunner() = enable(TaskRunner::class)
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private fun enable(loggerClass: KClass<*>) {
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val logger = Logger.getLogger(loggerClass.java.name)
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if (configuredLoggers.add(logger)) {
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logger.addHandler(ConsoleHandler().apply {
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level = Level.FINE
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formatter = object : SimpleFormatter() {
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override fun format(record: LogRecord) =
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String.format("[%1\$tF %1\$tT] %2\$s %n", record.millis, record.message)
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}
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})
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logger.level = Level.FINE
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}
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}
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}
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