Fix various Files.list resource leaks

The stream returned by Files.list must be closed according to the Javadoc. In most usages it was correctly done, but there were a few that had slipped through
quarkusio · Feb 6, 2022 · c9d6848 · c9d6848
1 parent b69b631
commit c9d6848
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Showing 5 changed files with 40 additions and 30 deletions.
diff --git a/...-jib/deployment/src/main/java/io/quarkus/container/image/jib/deployment/JibProcessor.java b/...-jib/deployment/src/main/java/io/quarkus/container/image/jib/deployment/JibProcessor.java
@@ -426,22 +426,25 @@ private JibContainerBuilder createContainerBuilderFromFastJar(String baseJvmImag
 
                 FileEntriesLayer.Builder bootLibsLayerBuilder = FileEntriesLayer.builder();
                 Path bootLibPath = componentsPath.resolve(JarResultBuildStep.LIB).resolve(JarResultBuildStep.BOOT_LIB);
-                Files.list(bootLibPath).forEach(lib -> {
-                    try {
-                        AbsoluteUnixPath libPathInContainer = workDirInContainer.resolve(JarResultBuildStep.LIB)
-                                .resolve(JarResultBuildStep.BOOT_LIB)
-                                .resolve(lib.getFileName());
-                        if (appCDSResult.isPresent()) {
-                            // the boot lib jars need to preserve the modification time because otherwise AppCDS won't work
-                            bootLibsLayerBuilder.addEntry(lib, libPathInContainer, Files.getLastModifiedTime(lib).toInstant());
-                        } else {
-                            bootLibsLayerBuilder.addEntry(lib, libPathInContainer);
-                        }
+                try (Stream<Path> boolLibPaths = Files.list(bootLibPath)) {
+                    boolLibPaths.forEach(lib -> {
+                        try {
+                            AbsoluteUnixPath libPathInContainer = workDirInContainer.resolve(JarResultBuildStep.LIB)
+                                    .resolve(JarResultBuildStep.BOOT_LIB)
+                                    .resolve(lib.getFileName());
+                            if (appCDSResult.isPresent()) {
+                                // the boot lib jars need to preserve the modification time because otherwise AppCDS won't work
+                                bootLibsLayerBuilder.addEntry(lib, libPathInContainer,
+                                        Files.getLastModifiedTime(lib).toInstant());
+                            } else {
+                                bootLibsLayerBuilder.addEntry(lib, libPathInContainer);
+                            }
 
-                    } catch (IOException e) {
-                        throw new UncheckedIOException(e);
-                    }
-                });
+                        } catch (IOException e) {
+                            throw new UncheckedIOException(e);
+                        }
+                    });
+                }
                 jibContainerBuilder.addFileEntriesLayer(bootLibsLayerBuilder.build());
 
                 Path deploymentPath = componentsPath.resolve(JarResultBuildStep.LIB).resolve(JarResultBuildStep.DEPLOYMENT_LIB);

diff --git a/extensions/qute/deployment/src/main/java/io/quarkus/qute/deployment/QuteProcessor.java b/extensions/qute/deployment/src/main/java/io/quarkus/qute/deployment/QuteProcessor.java
@@ -1272,12 +1272,14 @@ void collectTemplates(ApplicationArchivesBuildItem applicationArchives,
             for (Path path : artifact.getResolvedPaths()) {
                 if (Files.isDirectory(path)) {
                     // Try to find the templates in the root dir
-                    Path basePath = Files.list(path).filter(QuteProcessor::isBasePath).findFirst().orElse(null);
-                    if (basePath != null) {
-                        LOGGER.debugf("Found extension templates dir: %s", path);
-                        scan(basePath, basePath, BASE_PATH + "/", watchedPaths, templatePaths, nativeImageResources,
-                                config);
-                        break;
+                    try (Stream<Path> paths = Files.list(path)) {
+                        Path basePath = paths.filter(QuteProcessor::isBasePath).findFirst().orElse(null);
+                        if (basePath != null) {
+                            LOGGER.debugf("Found extension templates dir: %s", path);
+                            scan(basePath, basePath, BASE_PATH + "/", watchedPaths, templatePaths, nativeImageResources,
+                                    config);
+                            break;
+                        }
                     }
                 } else {
                     try (FileSystem artifactFs = ZipUtils.newFileSystem(path)) {
@@ -1298,8 +1300,8 @@ void collectTemplates(ApplicationArchivesBuildItem applicationArchives,
                 for (Path rootDir : tree.getRoots()) {
                     // Note that we cannot use ApplicationArchive.getChildPath(String) here because we would not be able to detect 
                     // a wrong directory name on case-insensitive file systems
-                    try {
-                        Path basePath = Files.list(rootDir).filter(QuteProcessor::isBasePath).findFirst().orElse(null);
+                    try (Stream<Path> rootDirPaths = Files.list(rootDir)) {
+                        Path basePath = rootDirPaths.filter(QuteProcessor::isBasePath).findFirst().orElse(null);
                         if (basePath != null) {
                             LOGGER.debugf("Found templates dir: %s", basePath);
                             basePaths.add(basePath);

diff --git a/...oyment/src/main/java/io/quarkus/smallrye/openapi/deployment/SmallRyeOpenApiProcessor.java b/...oyment/src/main/java/io/quarkus/smallrye/openapi/deployment/SmallRyeOpenApiProcessor.java
@@ -20,6 +20,7 @@
 import java.util.Optional;
 import java.util.Set;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import org.eclipse.microprofile.config.Config;
 import org.eclipse.microprofile.config.ConfigProvider;
@@ -847,9 +848,11 @@ private List<String> getResourceFiles(String pathName, Path target) throws IOExc
             if (classes != null) {
                 Path path = classes.resolve(pathName);
                 if (Files.exists(path)) {
-                    return Files.list(path).map((t) -> {
-                        return pathName + "/" + t.getFileName().toString();
-                    }).collect(Collectors.toList());
+                    try (Stream<Path> paths = Files.list(path)) {
+                        return paths.map((t) -> {
+                            return pathName + "/" + t.getFileName().toString();
+                        }).collect(Collectors.toList());
+                    }
                 }
             }
         }

diff --git a/.../src/main/java/io/quarkus/webjar/locator/deployment/WebJarLocatorStandaloneBuildStep.java b/.../src/main/java/io/quarkus/webjar/locator/deployment/WebJarLocatorStandaloneBuildStep.java
@@ -8,6 +8,7 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.stream.Stream;
 
 import org.jboss.logging.Logger;
 
@@ -65,8 +66,8 @@ public void findWebjarsAndCreateHandler(
                     provider.apply(tree -> {
                         final Path webjarsDir = tree.getPath(WEBJARS_PREFIX);
                         final Path nameDir;
-                        try {
-                            nameDir = Files.list(webjarsDir).filter(Files::isDirectory).findFirst().get();
+                        try (Stream<Path> webjarsDirPaths = Files.list(webjarsDir)) {
+                            nameDir = webjarsDirPaths.filter(Files::isDirectory).findFirst().get();
                         } catch (IOException e) {
                             throw new UncheckedIOException(e);
                         }

diff --git a/...ls/registry-client/src/main/java/io/quarkus/registry/client/maven/MavenRegistryCache.java b/...ls/registry-client/src/main/java/io/quarkus/registry/client/maven/MavenRegistryCache.java
@@ -13,6 +13,7 @@
 import java.util.Collection;
 import java.util.List;
 import java.util.Objects;
+import java.util.stream.Stream;
 import org.eclipse.aether.artifact.DefaultArtifact;
 
 public class MavenRegistryCache implements RegistryCache {
@@ -50,8 +51,8 @@ public void clearCache() throws RegistryResolutionException {
                 throw new RegistryResolutionException("Failed to resolve " + coords + " locally", e);
             }
             if (Files.exists(dir)) {
-                try {
-                    Files.list(dir).forEach(path -> {
+                try (Stream<Path> dirPaths = Files.list(dir)) {
+                    dirPaths.forEach(path -> {
                         try {
                             Files.delete(path);
                         } catch (IOException e) {