spfl4j logging

src/main/kotlin/com/aitrainer/api/ApiApplication.kt

@@ -1,5 +1,6 @@
 package com.aitrainer.api
 
+import org.slf4j.LoggerFactory
 import org.springframework.boot.SpringApplication
 import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.boot.builder.SpringApplicationBuilder
@@ -10,7 +11,7 @@ import org.springframework.web.bind.annotation.RestController
 @SpringBootApplication
 @RestController
 class ApiApplication
-
+    private val logger = LoggerFactory.getLogger(ApiApplication::class.simpleName)
     @Override
     fun configure(application: SpringApplicationBuilder): SpringApplicationBuilder {
         return application.sources(ApiApplication::class.java)
@@ -18,11 +19,12 @@ class ApiApplication
 
 
     fun main(args: Array<String>) {
+        logger.info(" ---- Start aitrainer API")
         SpringApplication.run(ApiApplication::class.java, *args)
     }
 
 
     @RequestMapping( "/")
     fun hello(): String {
-        return "Hello Aitrainer API";
+        return "Hello Aitrainer API"
     }

src/main/kotlin/com/aitrainer/api/controller/ExerciseTypeController.kt

@@ -2,6 +2,8 @@ package com.aitrainer.api.controller
 
 import com.aitrainer.api.model.ExerciseType
 import com.aitrainer.api.repository.ExerciseTypeRepository
+import org.slf4j.LoggerFactory
+
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.*
 import javax.validation.Valid
@@ -9,17 +11,27 @@ import javax.validation.Valid
 @RestController
 @RequestMapping("/api")
 class ExerciseTypeController ( private val exerciseTypeRepository: ExerciseTypeRepository ) {
-    
+    private val logger = LoggerFactory.getLogger(javaClass)
+
     @GetMapping("/exercise_type")
-    fun getAllExerciseType(): List<ExerciseType> =
-            exerciseTypeRepository.findAll()
+    fun getAllExerciseType(): List<ExerciseType> {
+        val list: List<ExerciseType> = exerciseTypeRepository.findAll()
+        logger.info("Get All exercise types: $list")
+        return list
+    }
+
+
 
     @PostMapping("/exercise_type")
-    fun createNewExerciseType(@Valid @RequestBody exerciseType: ExerciseType): ExerciseType =
-            exerciseTypeRepository.save(exerciseType)
+    fun createNewExerciseType(@Valid @RequestBody exerciseType: ExerciseType): ExerciseType {
+        logger.info("Create new exercise type: $exerciseType")
+        return exerciseTypeRepository.save(exerciseType)
+    }
+
 
     @GetMapping("/exercise_type/{id}")
     fun getExerciseTypeById(@PathVariable(value = "id") exerciseTypeId: Long): ResponseEntity<ExerciseType> {
+        logger.info("Get exercise type by id: $exerciseTypeId")
         return exerciseTypeRepository.findById(exerciseTypeId).map { exerciseType -> 
             ResponseEntity.ok(exerciseType)
         }.orElse(ResponseEntity.notFound().build())
@@ -35,7 +47,7 @@ class ExerciseTypeController ( private val exerciseTypeRepository: ExerciseTypeR
     @PutMapping("/exercise_type/{id}")
     fun updateExerciseTypesById(@PathVariable(value = "id") exerciseTypeId: Long,
                           @Valid @RequestBody newExerciseType: ExerciseType): ResponseEntity<ExerciseType> {
-
+        logger.info("Update exercise type by id: $exerciseTypeId with object $newExerciseType")
         return exerciseTypeRepository.findById(exerciseTypeId).map { existingExerciseType ->
             val updatedExerciseType: ExerciseType = existingExerciseType
                     .copy(name = newExerciseType.name,