Programmatically initialize logger, with a new file logger

src/main/kotlin/ca/gosyer/core/logging/LoggingSetup.kt

@@ -0,0 +1,76 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+package ca.gosyer.core.logging
+
+import org.apache.logging.log4j.Level
+import org.apache.logging.log4j.LogManager
+import org.apache.logging.log4j.core.LoggerContext
+import org.apache.logging.log4j.core.appender.ConsoleAppender
+import org.apache.logging.log4j.core.config.builder.api.ComponentBuilder
+import org.apache.logging.log4j.core.config.builder.api.ConfigurationBuilderFactory
+import java.io.File
+
+const val consolePattern =
+    "%highlight{%d{" + '$' + "{LOG_DATEFORMAT_PATTERN:-HH:mm:ss.SSS}} [%t] " + '$' + "{LOG_LEVEL_PATTERN:-%p}/%c{1}: %m%n" + '$' + "{LOG_EXCEPTION_CONVERSION_WORD:-%xEx}}{FATAL=red blink, ERROR=red, WARN=yellow bold, INFO=black, DEBUG=black, TRACE=black}"
+const val filePattern =
+    "%d{" + '$' + "{LOG_DATEFORMAT_PATTERN:-HH:mm:ss.SSS}} [%t] " + '$' + "{LOG_LEVEL_PATTERN:-%p}/%c{1}: %m%n" + '$' + "{LOG_EXCEPTION_CONVERSION_WORD:-%xEx}"
+
+@Suppress("UPPER_BOUND_VIOLATED_WARNING")
+fun initializeLogger(loggingLocation: File) {
+    val ctx = LogManager.getContext(false) as LoggerContext
+    val builder = ConfigurationBuilderFactory.newConfigurationBuilder()
+        .apply {
+            setStatusLevel(Level.WARN)
+            setConfigurationName("LoggerBuilder")
+            add(
+                newAppender("Console", "Console")
+                    .addAttribute(
+                        "target",
+                        ConsoleAppender.Target.SYSTEM_OUT
+                    )
+                    .add(
+                        newLayout("PatternLayout")
+                            .addAttribute("disableAnsi", "false")
+                            .addAttribute("pattern", consolePattern)
+                    )
+            )
+            add(
+                newAppender("Rolling", "RollingFile")
+                    .addAttribute(
+                        "fileName",
+                        loggingLocation.absolutePath.trimEnd { it == '/' || it == '\\' } + "/rolling.log"
+                    )
+                    .addAttribute(
+                        "filePattern",
+                        loggingLocation.absolutePath.trimEnd { it == '/' || it == '\\' } + "/archive/rolling-%d{MM-dd-yy}.log.gz"
+                    )
+                    .add(
+                        newLayout("PatternLayout")
+                            .addAttribute("pattern", filePattern)
+                    )
+                    .addComponent(
+                        newComponent<ComponentBuilder<*>>("Policies")
+                            .addComponent(
+                                newComponent<ComponentBuilder<*>>("CronTriggeringPolicy")
+                                    .addAttribute("schedule", "0 0 0 * * ?")
+                                    .addAttribute("evaluateOnStartup", "true")
+                            )
+                            .addComponent(
+                                newComponent<ComponentBuilder<*>>("SizeBasedTriggeringPolicy")
+                                    .addAttribute("size", "100M")
+                            )
+                    )
+            )
+            add(
+                newRootLogger(Level.DEBUG)
+                    .add(newAppenderRef("Console"))
+                    .add(newAppenderRef("Rolling"))
+            )
+        }
+    ctx.configuration = builder.build()
+    ctx.updateLoggers()
+}

src/main/kotlin/ca/gosyer/ui/main/main.kt

@@ -13,6 +13,7 @@ import androidx.compose.runtime.getValue
 import androidx.compose.ui.input.key.Key
 import androidx.compose.ui.unit.IntOffset
 import ca.gosyer.BuildConfig
+import ca.gosyer.core.logging.initializeLogger
 import ca.gosyer.data.DataModule
 import ca.gosyer.data.server.ServerService
 import ca.gosyer.data.server.ServerService.ServerResult
@@ -27,6 +28,7 @@ import ca.gosyer.ui.base.theme.AppTheme
 import ca.gosyer.util.lang.launchUI
 import ca.gosyer.util.lang.withUIContext
 import ca.gosyer.util.system.getAsFlow
+import ca.gosyer.util.system.userDataDir
 import com.github.weisj.darklaf.LafManager
 import com.github.weisj.darklaf.theme.DarculaTheme
 import com.github.weisj.darklaf.theme.IntelliJTheme
@@ -36,20 +38,15 @@ import com.github.zsoltk.compose.savedinstancestate.Bundle
 import kotlinx.coroutines.DelicateCoroutinesApi
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.flow.launchIn
-import org.apache.logging.log4j.core.config.Configurator
 import toothpick.configuration.Configuration
 import toothpick.ktp.KTP
 import toothpick.ktp.extension.getInstance
+import java.io.File
 import java.util.logging.Level
 
 @OptIn(DelicateCoroutinesApi::class)
 fun main() {
-    val clazz = MainViewModel::class.java
-    Configurator.initialize(
-        null,
-        clazz.classLoader,
-        clazz.getResource("log4j2.xml")?.toURI()
-    )
+    initializeLogger(File(userDataDir, "logging"))
 
     if (BuildConfig.DEBUG) {
         System.setProperty("kotlinx.coroutines.debug", "on")

src/main/resources/log4j2.xml

@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Configuration
-        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xmlns="http://logging.apache.org/log4j/2.0/config"
-        xsi:noNamespaceSchemaLocation="Log4j-config.xsd">
-    <Appenders>
-        <Console name="Console" target="SYSTEM_OUT">
-            <PatternLayout disableAnsi="false" pattern="%highlight{%d{${LOG_DATEFORMAT_PATTERN:-HH:mm:ss.SSS}} [%t] ${LOG_LEVEL_PATTERN:-%p}/%c{1}: %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%xEx}}{FATAL=red blink, ERROR=red, WARN=yellow bold, INFO=black, DEBUG=black, TRACE=black}" />
-        </Console>
-    </Appenders>
-
-    <Loggers>
-        <Root level="debug">
-            <AppenderRef ref="Console"/>
-        </Root>
-    </Loggers>
-
-</Configuration>