Change endpoint configuration to select single endpoint

* If REST endpoint is configured, it will be used
* If Kafka endpoint is configured, it will be used
* If both endpoints are configured, REST configuration has precedence and will be used

src/main/kotlin/dev/dnpm/etl/processor/config/AppConfiguration.kt

@@ -21,8 +21,6 @@ package dev.dnpm.etl.processor.config
 
 import com.fasterxml.jackson.databind.ObjectMapper
 import dev.dnpm.etl.processor.monitoring.ReportService
-import dev.dnpm.etl.processor.output.MtbFileSender
-import dev.dnpm.etl.processor.output.RestMtbFileSender
 import dev.dnpm.etl.processor.pseudonym.AnonymizingGenerator
 import dev.dnpm.etl.processor.pseudonym.Generator
 import dev.dnpm.etl.processor.pseudonym.GpasPseudonymGenerator
@@ -38,9 +36,7 @@ import reactor.core.publisher.Sinks
     value = [
         AppConfigProperties::class,
         PseudonymizeConfigProperties::class,
-        GPasConfigProperties::class,
-        RestTargetProperties::class,
-        KafkaTargetProperties::class
+        GPasConfigProperties::class
     ]
 )
 class AppConfiguration {
@@ -65,12 +61,6 @@ class AppConfiguration {
         return PseudonymizeService(generator, pseudonymizeConfigProperties)
     }
 
-    @ConditionalOnProperty(value = ["app.rest.uri"])
-    @Bean
-    fun restMtbFileSender(restTargetProperties: RestTargetProperties): MtbFileSender {
-        return RestMtbFileSender(restTargetProperties)
-    }
-
     @Bean
     fun reportService(objectMapper: ObjectMapper): ReportService {
         return ReportService(objectMapper)

src/main/kotlin/dev/dnpm/etl/processor/config/AppKafkaConfiguration.kt

@@ -24,10 +24,13 @@ import dev.dnpm.etl.processor.monitoring.RequestRepository
 import dev.dnpm.etl.processor.output.KafkaMtbFileSender
 import dev.dnpm.etl.processor.output.MtbFileSender
 import dev.dnpm.etl.processor.services.kafka.KafkaResponseProcessor
+import org.slf4j.LoggerFactory
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty
 import org.springframework.boot.context.properties.EnableConfigurationProperties
 import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
+import org.springframework.core.annotation.Order
 import org.springframework.kafka.core.ConsumerFactory
 import org.springframework.kafka.core.KafkaTemplate
 import org.springframework.kafka.listener.ContainerProperties
@@ -38,14 +41,19 @@ import org.springframework.kafka.listener.KafkaMessageListenerContainer
     value = [KafkaTargetProperties::class]
 )
 @ConditionalOnProperty(value = ["app.kafka.topic", "app.kafka.servers"])
+@ConditionalOnMissingBean(MtbFileSender::class)
+@Order(-5)
 class AppKafkaConfiguration {
 
+    private val logger = LoggerFactory.getLogger(AppKafkaConfiguration::class.java)
+
     @Bean
     fun kafkaMtbFileSender(
         kafkaTemplate: KafkaTemplate<String, String>,
         kafkaTargetProperties: KafkaTargetProperties,
         objectMapper: ObjectMapper
     ): MtbFileSender {
+        logger.info("Selected 'KafkaMtbFileSender'")
         return KafkaMtbFileSender(kafkaTemplate, kafkaTargetProperties, objectMapper)
     }
 

src/main/kotlin/dev/dnpm/etl/processor/config/AppRestConfiguration.kt

@@ -0,0 +1,52 @@
+/*
+ * This file is part of ETL-Processor
+ *
+ * Copyright (c) 2023  Comprehensive Cancer Center Mainfranken, Datenintegrationszentrum Philipps-Universität Marburg and Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package dev.dnpm.etl.processor.config
+
+import dev.dnpm.etl.processor.output.MtbFileSender
+import dev.dnpm.etl.processor.output.RestMtbFileSender
+import org.slf4j.LoggerFactory
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty
+import org.springframework.boot.context.properties.EnableConfigurationProperties
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.core.annotation.Order
+
+@Configuration
+@EnableConfigurationProperties(
+    value = [
+        RestTargetProperties::class
+    ]
+)
+@ConditionalOnProperty(value = ["app.rest.uri"])
+@ConditionalOnMissingBean(MtbFileSender::class)
+@Order(-10)
+class AppRestConfiguration {
+
+    private val logger = LoggerFactory.getLogger(AppRestConfiguration::class.java)
+
+    @Bean
+    fun restMtbFileSender(restTargetProperties: RestTargetProperties): MtbFileSender {
+        logger.info("Selected 'RestMtbFileSender'")
+        return RestMtbFileSender(restTargetProperties)
+    }
+
+}
+