Additionally export request configuration

src/main/java/ch/sbb/rssched/Application.java

@@ -50,8 +50,6 @@ public class Application {
 
     // TODO: Export also RSSched configuration excel to output folder
 
-    // TODO: Use instance ID for file paths.
-
     public static final String APP_CMD_SYNTAX = "rssched-matsim-client <config_file>";
     public static final String DEFAULT_HOST = "http://localhost";
     public static final String DEFAULT_PORT = "3000";

src/main/java/ch/sbb/rssched/client/config/RsschedRequestConfig.java

@@ -2,6 +2,12 @@
 
 import ch.sbb.rssched.client.config.selection.FilterStrategy;
 import ch.sbb.rssched.client.config.selection.NoFilterStrategy;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -39,6 +45,15 @@ public static Builder builder() {
         return new Builder();
     }
 
+    public String toJSON() throws JsonProcessingException {
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.registerModule(new Jdk8Module());
+        mapper.registerModule(new JavaTimeModule());
+        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS); // Ensure dates are written in ISO 8601 format
+        mapper.enable(SerializationFeature.INDENT_OUTPUT);
+        return mapper.writeValueAsString(this);
+    }
+
     /**
      * Builder class for constructing a RequestConfig instance with customized settings. Allows addition of depots,
      * shunting locations, and maintenance slots.
@@ -138,10 +153,13 @@ public static class Global {
          * Note: The transit vehicle type ids must match / exist in the matsim scenario.
          */
         private final Set<VehicleType> vehicleTypes = new HashSet<>();
+
         /**
          * The filter strategy to filter transit lines of interest, default is no filter.
          */
+        @JsonIgnore
         private FilterStrategy filterStrategy = new NoFilterStrategy();
+
         /**
          * The sample size of the run, needed to scale to 100% for the demand.
          */

src/main/java/ch/sbb/rssched/client/pipeline/request/RequestConfigWriter.java

@@ -0,0 +1,39 @@
+package ch.sbb.rssched.client.pipeline.request;
+
+import ch.sbb.rssched.client.config.RsschedRequestConfig;
+import ch.sbb.rssched.client.pipeline.core.ResultSink;
+import ch.sbb.rssched.client.pipeline.utils.io.OutputDirectoryManager;
+import lombok.extern.log4j.Log4j2;
+
+import java.io.FileWriter;
+import java.io.IOException;
+
+
+/**
+ * Request config JSON writer
+ * <p>
+ * Writes the scheduler request configuration to a JSON file in the specified output directory.
+ *
+ * @author munterfi
+ */
+@Log4j2
+public class RequestConfigWriter implements ResultSink<RequestPipe> {
+    private static final String REQUEST_CONFIG_FILE_NAME = "scheduler_request_config.json";
+    private final RsschedRequestConfig config;
+
+    public RequestConfigWriter(RsschedRequestConfig config) {
+        this.config = config;
+    }
+
+    @Override
+    public void process(RequestPipe pipe) {
+        String filePath = new OutputDirectoryManager(config.getOutputDirectory(), pipe.getRunId(),
+                config.getInstanceId()).buildFilePath(REQUEST_CONFIG_FILE_NAME);
+        log.info("Exporting request config JSON to {}", filePath);
+        try (FileWriter fileWriter = new FileWriter(filePath)) {
+            fileWriter.write(config.toJSON());
+        } catch (IOException e) {
+            throw new RuntimeException("Error writing the JSON file: " + e.getMessage(), e);
+        }
+    }
+}

src/main/java/ch/sbb/rssched/client/pipeline/request/RequestJSONWriter.java

@@ -11,8 +11,6 @@
  * Request JSON writer
  * <p>
  * Writes the scheduler request to a JSON file in the specified output directory.
- * <p>
- * Note: Although this would be a sink,
  *
  * @author munterfi
  */

src/main/java/ch/sbb/rssched/client/pipeline/request/RequestPipeline.java

@@ -32,6 +32,7 @@ public RequestPipeline(RsschedRequestConfig config) {
         // add filter
         addFilter(new RequestComposer(config));
         // add sink
+        addSink(new RequestConfigWriter(config));
         addSink(new RequestJSONWriter(config.getOutputDirectory(), config.getInstanceId()));
     }
 }

src/test/java/ch/sbb/rssched/client/config/RsschedRequestConfigReaderIT.java

@@ -39,7 +39,6 @@ void shouldReadConfigFile() throws IOException {
         assertEquals(999, config.getDepot().getDefaultCapacity());
         assertEquals("dpt_", config.getDepot().getDefaultIdPrefix());
         assertFalse(config.getDepot().isCreateAtTerminalLocations());
-
     }
 
 }