Adds Logback config and updates logging

src/main/kotlin/net/halfbinary/prettyplayerapi/controller/TrackController.kt

@@ -1,6 +1,7 @@
 package net.halfbinary.prettyplayerapi.controller
 
 import com.mpatric.mp3agic.Mp3File
+import io.github.oshai.kotlinlogging.KotlinLogging
 import net.halfbinary.prettyplayerapi.model.TrackInfo
 import net.halfbinary.prettyplayerapi.service.MusicService
 import org.springframework.web.bind.annotation.CrossOrigin
@@ -8,6 +9,8 @@ import org.springframework.web.bind.annotation.GetMapping
 import org.springframework.web.bind.annotation.PathVariable
 import org.springframework.web.bind.annotation.RestController
 
+private val logger = KotlinLogging.logger {}
+
 @RestController
 @CrossOrigin
 class TrackController(private val musicService: MusicService) {
@@ -17,6 +20,7 @@ class TrackController(private val musicService: MusicService) {
         val trackFile = Mp3File(file)
         trackFile.id3v2Tag.artist
         trackFile.id3v2Tag.apply {
+            logger.debug { "Getting track $trackNumber. $title by $artist on $album" }
             return TrackInfo(album, artist, title)
         }
     }

src/main/kotlin/net/halfbinary/prettyplayerapi/service/AlbumCacheService.kt

@@ -37,6 +37,7 @@ class AlbumCacheService(private val albumRepository: AlbumRepository) {
     }
 
     suspend fun cacheAlbums(refresh: Boolean = false) {
+        logger.debug { "Starting the cache process with refresh set to $refresh" }
         createAlbumArtRootDir()
         val list = getAlbumRootDir()
             .walkTopDown()
@@ -56,6 +57,7 @@ class AlbumCacheService(private val albumRepository: AlbumRepository) {
             }
 
         albumRepository.albumCache = convertAlbumListToMapForCache(list)
+        //TODO: Write cache to file for later reading...or get a DB going?
         logger.info { "Albums cached: ${albumRepository.albumCache.size}" }
     }
 
@@ -83,8 +85,8 @@ class AlbumCacheService(private val albumRepository: AlbumRepository) {
     }
 
     suspend fun getAndWriteAlbumImageFile(file: File, folderHash: String, folder: Path, refresh: Boolean = false) {
+        logger.info { "Checking album $folder with hash $folderHash" }
         val hashedFile = File("$ALBUM_ART_ROOT_DIR/$folderHash.jpg")
-        logger.info { "Looking at $hashedFile" }
         if(refresh || !hashedFile.exists()) {
             logger.debug { "No image for $folder, making one..." }
             val imageByteStream = Mp3File(file).id3v2Tag.albumImage.inputStream()
@@ -93,7 +95,7 @@ class AlbumCacheService(private val albumRepository: AlbumRepository) {
             val outputImage = BufferedImage(300, 300, BufferedImage.TYPE_INT_RGB)
             outputImage.graphics.drawImage(scaledImage, 0, 0, null)
             ImageIO.write(outputImage, "jpg", hashedFile)
-            logger.debug { "Wrote new image file." }
+            logger.trace { "Wrote new image file for $folder with hash $folderHash" }
         }
     }
 

src/main/kotlin/net/halfbinary/prettyplayerapi/service/StartupService.kt

@@ -17,7 +17,6 @@ class StartupService(private val albumCacheService: AlbumCacheService) {
     suspend fun onStartup() {
         coroutineScope {
             launch {
-                logger.info { "Starting up..." }
                 albumCacheService.doAlbumCache()
             }
         }

src/main/resources/logback.xml

@@ -0,0 +1,11 @@
+<configuration>
+  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+    </encoder>
+  </appender>
+  <logger name="net.halfbinary.prettyplayerapi" level="debug" />
+  <root level="info">
+    <appender-ref ref="STDOUT" />
+  </root>
+</configuration>