Move participants.json file to resource directory, update CatalogNode…

…DirectoryExtension.java

federated-catalog/fc-03-static-node-directory/README.md

@@ -44,10 +44,9 @@ However, this solution is intended for use only within the sample scope; in prod
 
 ### Target Node Resolver
 
-#### TargetNodeResolver
-The [CatalogNodeResolver](./target-node-resolver/src/main/java/org/eclipse/edc/sample/extension/fc/CatalogNodeDirectory.java) 
+The [CatalogNodeDirectory](./target-node-resolver/src/main/java/org/eclipse/edc/sample/extension/fc/CatalogNodeDirectory.java) 
 implements TargetNodeDirectory and overrides its `getAll()` method. 
-In our implementation, this method maps the array of Json objects from the [`participant.json`](./target-node-resolver/resources/participants.json) 
+In our implementation, this method maps the file content of [`participant.json`](./target-node-resolver/resources/participants.json) 
 to a list of TargetNodes.
 
 ```java
@@ -56,7 +55,7 @@ public class CatalogNodeDirectory implements TargetNodeDirectory {
     @Override
     public List<TargetNode> getAll() {
         try {
-            return objectMapper.readValue(participantListFile, new TypeReference<>() {});
+            return objectMapper.readValue(participantFileContent, new TypeReference<>() {});
         } catch (IOException e) {
             throw new RuntimeException(e);
         }

federated-catalog/fc-03-static-node-directory/target-node-resolver/src/main/java/org/eclipse/edc/sample/extension/fc/CatalogNodeDirectory.java

@@ -19,24 +19,24 @@
 import org.eclipse.edc.crawler.spi.TargetNode;
 import org.eclipse.edc.crawler.spi.TargetNodeDirectory;
 
-import java.io.File;
 import java.io.IOException;
 import java.util.List;
 
 public class CatalogNodeDirectory implements TargetNodeDirectory {
 
     private final ObjectMapper objectMapper;
-    private final File participantListFile;
+    private final String participantFileContent;
 
-    public CatalogNodeDirectory(ObjectMapper objectMapper, File participantListFile) {
+
+    public CatalogNodeDirectory(ObjectMapper objectMapper, String participantFileContent) {
         this.objectMapper = objectMapper;
-        this.participantListFile = participantListFile;
+        this.participantFileContent = participantFileContent;
     }
 
     @Override
     public List<TargetNode> getAll() {
         try {
-            return objectMapper.readValue(participantListFile, new TypeReference<>() {});
+            return objectMapper.readValue(participantFileContent, new TypeReference<>() {});
         } catch (IOException e) {
             throw new RuntimeException(e);
         }

federated-catalog/fc-03-static-node-directory/target-node-resolver/src/main/java/org/eclipse/edc/sample/extension/fc/CatalogNodeDirectoryExtension.java

@@ -18,30 +18,31 @@
 import org.eclipse.edc.runtime.metamodel.annotation.Inject;
 import org.eclipse.edc.runtime.metamodel.annotation.Provider;
 import org.eclipse.edc.spi.system.ServiceExtension;
-import org.eclipse.edc.spi.system.ServiceExtensionContext;
 import org.eclipse.edc.spi.types.TypeManager;
 
-import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 
 public class CatalogNodeDirectoryExtension implements ServiceExtension {
     @Inject
     private TypeManager typeManager;
 
-    private File participantListFile;
+    @Provider 
+    public TargetNodeDirectory federatedCacheNodeDirectory() {
+        String participantsFilePath = "participants.json";
 
-    @Override
-    public void initialize(ServiceExtensionContext context) {
-        var participantsFilePath = "federated-catalog/fc-03-static-node-directory/target-node-resolver/resources/participants.json";
+        ClassLoader classLoader = getClass().getClassLoader();
+        try (InputStream participantFileInputStream = classLoader.getResourceAsStream(participantsFilePath)) {
+            if (participantFileInputStream == null) {
+                throw new RuntimeException("Participant list file does not exist: " + participantsFilePath);
+            }
 
-        participantListFile = new File(participantsFilePath).getAbsoluteFile();
-        if (!participantListFile.exists()) {
-            throw new RuntimeException("Participant list file does not exist: " + participantsFilePath);
-        }
-    }
+            String participantFileContent = new String(participantFileInputStream.readAllBytes(), StandardCharsets.UTF_8);
 
-    @Provider 
-    public TargetNodeDirectory federatedCacheNodeDirectory() {
-        return new CatalogNodeDirectory(typeManager.getMapper(), participantListFile);
+            return new CatalogNodeDirectory(typeManager.getMapper(), participantFileContent);
+        } catch (IOException e) {
+            throw new RuntimeException("Failed to read and map participant list file: " + participantsFilePath, e);
+        }
     }
-
 }

system-tests/build.gradle.kts

@@ -18,10 +18,6 @@ plugins {
     `java-library`
 }
 
-tasks.test {
-    workingDir = rootProject.projectDir
-}
-
 dependencies {
     testImplementation(libs.edc.junit)
     testImplementation(libs.edc.json.ld.lib)