Warn about unknown application config files

Author: radcortez

core/deployment/src/main/java/io/quarkus/deployment/steps/ConfigGenerationBuildStep.java

@@ -40,6 +40,7 @@
 import io.quarkus.deployment.annotations.BuildStep;
 import io.quarkus.deployment.annotations.ExecutionTime;
 import io.quarkus.deployment.annotations.Record;
+import io.quarkus.deployment.builditem.ApplicationArchivesBuildItem;
 import io.quarkus.deployment.builditem.CombinedIndexBuildItem;
 import io.quarkus.deployment.builditem.ConfigClassBuildItem;
 import io.quarkus.deployment.builditem.ConfigMappingBuildItem;
@@ -69,6 +70,7 @@
 import io.quarkus.gizmo.MethodCreator;
 import io.quarkus.gizmo.MethodDescriptor;
 import io.quarkus.gizmo.ResultHandle;
+import io.quarkus.paths.PathCollection;
 import io.quarkus.runtime.LaunchMode;
 import io.quarkus.runtime.annotations.StaticInitSafe;
 import io.quarkus.runtime.configuration.ConfigBuilder;
@@ -267,8 +269,11 @@ void generateConfigClass(
             List<RunTimeConfigBuilderBuildItem> runTimeConfigBuilders)
             throws IOException {
 
-        reportUnknownBuildProperties(launchModeBuildItem.getLaunchMode(),
-                configItem.getReadResult().getUnknownBuildProperties());
+        // So it only reports during the build, because it is very likely that the property is available in runtime
+        // and, it will be caught by the RuntimeConfig and log double warnings
+        if (!launchModeBuildItem.getLaunchMode().isDevOrTest()) {
+            ConfigDiagnostic.unknownProperties(configItem.getReadResult().getUnknownBuildProperties());
+        }
 
         if (liveReloadBuildItem.isLiveReload()) {
             return;
@@ -320,14 +325,6 @@ void generateConfigClass(
                 .run();
     }
 
-    private static void reportUnknownBuildProperties(LaunchMode launchMode, Set<String> unknownBuildProperties) {
-        // So it only reports during the build, because it is very likely that the property is available in runtime
-        // and, it will be caught by the RuntimeConfig and log double warnings
-        if (!launchMode.isDevOrTest()) {
-            ConfigDiagnostic.unknownProperties(unknownBuildProperties);
-        }
-    }
-
     @BuildStep
     public void suppressNonRuntimeConfigChanged(
             BuildProducer<SuppressNonRuntimeConfigChangedWarningBuildItem> suppressNonRuntimeConfigChanged) {
@@ -441,6 +438,31 @@ public void watchConfigFiles(BuildProducer<HotDeploymentWatchedFileBuildItem> wa
         }
     }
 
+    @BuildStep
+    @Record(ExecutionTime.RUNTIME_INIT)
+    void unknownConfigFiles(
+            ApplicationArchivesBuildItem applicationArchives,
+            LaunchModeBuildItem launchModeBuildItem,
+            ConfigRecorder configRecorder) throws Exception {
+
+        PathCollection rootDirectories = applicationArchives.getRootArchive().getRootDirectories();
+        if (!rootDirectories.isSinglePath()) {
+            return;
+        }
+
+        Set<String> buildTimeFiles = new HashSet<>();
+        buildTimeFiles.addAll(ConfigDiagnostic.configFiles(rootDirectories.getSinglePath()));
+        buildTimeFiles.addAll(ConfigDiagnostic.configFilesFromLocations());
+
+        // Report always at build time since config folder and locations may differ from build to runtime
+        ConfigDiagnostic.unknownConfigFiles(buildTimeFiles);
+
+        // No need to include the application files, because they don't change
+        if (!launchModeBuildItem.getLaunchMode().isDevOrTest()) {
+            configRecorder.unknownConfigFiles();
+        }
+    }
+
     @BuildStep(onlyIf = NativeOrNativeSourcesBuild.class)
     @Record(ExecutionTime.RUNTIME_INIT)
     void warnDifferentProfileUsedBetweenBuildAndRunTime(ConfigRecorder configRecorder) {

core/runtime/src/main/java/io/quarkus/runtime/configuration/ConfigDiagnostic.java

@@ -1,17 +1,30 @@
 package io.quarkus.runtime.configuration;
 
+import static io.smallrye.config.SmallRyeConfig.SMALLRYE_CONFIG_LOCATIONS;
+
+import java.io.IOException;
+import java.net.URI;
+import java.nio.file.DirectoryStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.NoSuchElementException;
+import java.util.Optional;
 import java.util.Set;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.CopyOnWriteArraySet;
+import java.util.function.Consumer;
 
 import org.eclipse.microprofile.config.Config;
 import org.eclipse.microprofile.config.ConfigProvider;
+import org.eclipse.microprofile.config.spi.ConfigSource;
 import org.jboss.logging.Logger;
 
 import io.quarkus.runtime.ImageMode;
+import io.smallrye.config.SmallRyeConfig;
 import io.smallrye.config.common.utils.StringUtil;
 
 /**
@@ -152,4 +165,79 @@ public static String getNiceErrorMessage() {
     public static Set<String> getErrorKeys() {
         return new HashSet<>(errorKeys);
     }
+
+    private static final DirectoryStream.Filter<Path> CONFIG_FILES_FILTER = new DirectoryStream.Filter<>() {
+        @Override
+        public boolean accept(final Path entry) {
+            // Ignore .properties, because we know these are have a default loader in core
+            // Ignore profile files. The loading rules require the main file to be present, so we only need the type
+            String filename = entry.getFileName().toString();
+            return Files.isRegularFile(entry) && filename.startsWith("application.") && !filename.endsWith(".properties");
+        }
+    };
+
+    public static Set<String> configFiles(Path configFilesLocation) throws IOException {
+        if (!Files.exists(configFilesLocation)) {
+            return Collections.emptySet();
+        }
+
+        Set<String> configFiles = new HashSet<>();
+        try (DirectoryStream<Path> candidates = Files.newDirectoryStream(configFilesLocation, CONFIG_FILES_FILTER)) {
+            for (Path candidate : candidates) {
+                configFiles.add(candidate.toString());
+            }
+        }
+        return configFiles;
+    }
+
+    public static Set<String> configFilesFromLocations() throws Exception {
+        SmallRyeConfig config = ConfigProvider.getConfig().unwrap(SmallRyeConfig.class);
+
+        Set<String> configFiles = new HashSet<>();
+        configFiles.addAll(configFiles(Paths.get(System.getProperty("user.dir"), "config")));
+        Optional<List<URI>> optionalLocations = config.getOptionalValues(SMALLRYE_CONFIG_LOCATIONS, URI.class);
+        optionalLocations.ifPresent(new Consumer<List<URI>>() {
+            @Override
+            public void accept(final List<URI> locations) {
+                for (URI location : locations) {
+                    Path path = location.getScheme() != null && location.getScheme().equals("file") ? Paths.get(location)
+                            : Paths.get(location.getPath());
+                    if (Files.isDirectory(path)) {
+                        try {
+                            configFiles.addAll(configFiles(path));
+                        } catch (IOException e) {
+                            // Ignore
+                        }
+                    }
+                }
+            }
+        });
+
+        return configFiles;
+    }
+
+    public static void unknownConfigFiles(final Set<String> configFiles) {
+        SmallRyeConfig config = ConfigProvider.getConfig().unwrap(SmallRyeConfig.class);
+        Set<String> configNames = new HashSet<>();
+        for (ConfigSource configSource : config.getConfigSources()) {
+            if (configSource.getName() != null && configSource.getName().contains("application")) {
+                configNames.add(configSource.getName());
+            }
+        }
+
+        for (String configFile : configFiles) {
+            boolean found = false;
+            for (String configName : configNames) {
+                if (configName.contains(configFile)) {
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                log.warnf(
+                        "Unrecognized configuration file %s found; Please, check if your are providing the proper extension to load the file",
+                        configFile);
+            }
+        }
+    }
 }

core/runtime/src/main/java/io/quarkus/runtime/configuration/ConfigRecorder.java

@@ -97,4 +97,8 @@ public void handleNativeProfileChange(List<String> buildProfiles) {
             }
         }
     }
+
+    public void unknownConfigFiles() throws Exception {
+        ConfigDiagnostic.unknownConfigFiles(ConfigDiagnostic.configFilesFromLocations());
+    }
 }

integration-tests/test-extension/extension/deployment/src/test/java/io/quarkus/config/UnknownConfigFilesTest.java

@@ -0,0 +1,38 @@
+package io.quarkus.config;
+
+import static io.smallrye.common.constraint.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.LogRecord;
+import java.util.stream.Collectors;
+
+import org.jboss.shrinkwrap.api.asset.EmptyAsset;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.test.QuarkusUnitTest;
+
+class UnknownConfigFilesTest {
+    @RegisterExtension
+    static final QuarkusUnitTest TEST = new QuarkusUnitTest()
+            .withApplicationRoot((jar) -> jar
+                    .addAsResource(EmptyAsset.INSTANCE, "application.properties")
+                    .addAsResource(EmptyAsset.INSTANCE, "application-prod.properties")
+                    .addAsResource(EmptyAsset.INSTANCE, "application.yaml"))
+            .setLogRecordPredicate(record -> record.getLevel().intValue() >= Level.WARNING.intValue())
+            .assertLogRecords(logRecords -> {
+                List<LogRecord> unknownConfigFiles = logRecords.stream()
+                        .filter(l -> l.getMessage().startsWith("Unrecognized configuration file"))
+                        .collect(Collectors.toList());
+
+                assertEquals(1, unknownConfigFiles.size());
+                assertTrue(unknownConfigFiles.get(0).getParameters()[0].toString().contains("application.yaml"));
+            });
+
+    @Test
+    void unknownConfigFiles() {
+
+    }
+}