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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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|
@@ -16,8 +16,18 @@ | |
| */ | ||
| package tv.dotstart.beacon.util | ||
|
|
||
| import org.apache.logging.log4j.Level | ||
| import org.apache.logging.log4j.LogManager | ||
| import org.apache.logging.log4j.Logger | ||
| import org.apache.logging.log4j.core.LoggerContext | ||
| import org.apache.logging.log4j.core.appender.RollingFileAppender | ||
| import org.apache.logging.log4j.core.appender.rolling.DefaultRolloverStrategy | ||
| import org.apache.logging.log4j.core.appender.rolling.OnStartupTriggeringPolicy | ||
| import org.apache.logging.log4j.core.config.Configurator | ||
| import org.apache.logging.log4j.core.layout.PatternLayout | ||
| import java.nio.charset.StandardCharsets | ||
| import java.nio.file.Files | ||
| import java.nio.file.Path | ||
| import kotlin.reflect.KClass | ||
|
|
||
| /** | ||
|
|
@@ -26,6 +36,15 @@ import kotlin.reflect.KClass | |
| * @author [Johannes Donath](mailto:[email protected]) | ||
| */ | ||
|
|
||
| /** | ||
| * Permits retrieving and altering of the root logger level. | ||
| */ | ||
| var rootLevel: Level | ||
| get() = LogManager.getRootLogger().level | ||
| set(value: Level) { | ||
| Configurator.setRootLevel(value) | ||
| } | ||
|
|
||
| /** | ||
| * Retrieves the logger for a given type. | ||
| * | ||
|
|
@@ -35,3 +54,56 @@ import kotlin.reflect.KClass | |
| */ | ||
| inline val <T : Any> KClass<T>.logger: Logger | ||
| get() = LogManager.getLogger(this.java) | ||
|
|
||
| /** | ||
| * Configures the root logger to write all of its logs to a given storage location. | ||
| */ | ||
| fun configureLogStorage(target: Path) { | ||
| Files.createDirectories(target) | ||
|
|
||
| val ctx = LoggerContext.getContext(false) | ||
| val root = ctx.rootLogger | ||
| val cfg = ctx.configuration | ||
|
|
||
| val layout = PatternLayout.newBuilder() | ||
| .withPattern("[%d{HH:mm:ss}] [%25.25t] [%level]: %msg%n") | ||
| .withCharset(StandardCharsets.UTF_8) | ||
| .withAlwaysWriteExceptions(true) | ||
| .withConfiguration(cfg) | ||
| .build() | ||
|
|
||
| val policy = OnStartupTriggeringPolicy.createPolicy(0) | ||
|
|
||
| val strategy = DefaultRolloverStrategy.newBuilder() | ||
| .withMax("10") | ||
| .withMin("1") | ||
| .withFileIndex("min") | ||
| .withConfig(cfg) | ||
| .build() | ||
|
|
||
| val fileAppender = (RollingFileAppender.newBuilder<RollingFileAppenderBuilder>() as RollingFileAppender.Builder<RollingFileAppenderBuilder>).apply { | ||
| name = "File" | ||
| configuration = cfg | ||
| setLayout(layout) | ||
|
|
||
| withFileName(target.resolve("latest.log").toAbsolutePath().toString()) | ||
| withFilePattern(target.resolve("lantern.log").toAbsolutePath().toString() + ".%i") | ||
| withAppend(true) | ||
| withImmediateFlush(true) | ||
| withPolicy(policy) | ||
| withStrategy(strategy) | ||
| }.build() | ||
|
|
||
| fileAppender.start() | ||
|
|
||
| cfg.addAppender(fileAppender) | ||
| root.addAppender(fileAppender) | ||
| } | ||
|
|
||
| /** | ||
| * Utility class which works around log4j's current API issues. | ||
| * | ||
| * See https://stackoverflow.com/questions/49601627/how-to-specify-recursive-generic-parameter-in-kotlin/50565929#50565929 | ||
| * for more information on the topic. | ||
| */ | ||
| private class RollingFileAppenderBuilder : RollingFileAppender.Builder<RollingFileAppenderBuilder>() | ||