buffer file outputs

This makes "Resolving MavenDependencyRoots..." output somewhat faster on
my machine.

p2-maven-plugin/src/main/java/org/eclipse/tycho/p2maven/transport/FtpTransportProtocolHandler.java

@@ -1,22 +1,32 @@
 package org.eclipse.tycho.p2maven.transport;
 
-import org.apache.commons.io.FileUtils;
-import org.apache.commons.net.ftp.*;
-import org.codehaus.plexus.component.annotations.Component;
-import org.codehaus.plexus.component.annotations.Requirement;
-import org.codehaus.plexus.logging.Logger;
-import org.codehaus.plexus.personality.plexus.lifecycle.phase.Disposable;
-import org.eclipse.tycho.MavenRepositorySettings.Credentials;
+import static java.lang.String.format;
 
-import java.io.*;
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
 import java.net.SocketException;
 import java.net.URI;
 import java.nio.file.Files;
 import java.time.Duration;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
-import static java.lang.String.format;
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.net.ftp.FTP;
+import org.apache.commons.net.ftp.FTPClient;
+import org.apache.commons.net.ftp.FTPCmd;
+import org.apache.commons.net.ftp.FTPConnectionClosedException;
+import org.apache.commons.net.ftp.FTPFile;
+import org.apache.commons.net.ftp.FTPReply;
+import org.codehaus.plexus.component.annotations.Component;
+import org.codehaus.plexus.component.annotations.Requirement;
+import org.codehaus.plexus.logging.Logger;
+import org.codehaus.plexus.personality.plexus.lifecycle.phase.Disposable;
+import org.eclipse.tycho.MavenRepositorySettings.Credentials;
 
 /**
  * Handles files discovery over the FTP protocol.
@@ -93,7 +103,7 @@ public File getFile(final URI uri) throws IOException {
             final File tempFile = Files.createTempFile(parent.toPath(), "download", ".tmp").toFile();
             tempFile.deleteOnExit();
 
-            try (final OutputStream os = new FileOutputStream(tempFile)) {
+			try (final OutputStream os = new BufferedOutputStream(new FileOutputStream(tempFile))) {
                 if (!client.retrieveFile(remotePath, os)) {
                     final String message = client.getReplyString();
                     throw new IOException(format("Error retrieving file: %s. Message: %s", remotePath, message));

p2-maven-plugin/src/main/java/org/eclipse/tycho/p2maven/transport/SharedHttpCacheStorage.java

@@ -12,11 +12,13 @@
  *******************************************************************************/
 package org.eclipse.tycho.p2maven.transport;
 
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 import java.net.HttpURLConnection;
 import java.net.URI;
 import java.text.DateFormat;
@@ -72,7 +74,7 @@ protected boolean removeEldestEntry(final Map.Entry<File, CacheLine> eldest) {
 
 	/**
 	 * Fetches the cache entry for this URI
-	 * 
+	 *
 	 * @param uri
 	 * @return
 	 * @throws FileNotFoundException if the URI is know to be not found
@@ -266,7 +268,7 @@ public synchronized File fetchFile(URI uri, HttpTransportFactory transportFactor
 				}
 				response.checkResponseCode();
 				tempFile = File.createTempFile("download", ".tmp", file.getParentFile());
-				try (FileOutputStream os = new FileOutputStream(tempFile)) {
+				try (OutputStream os = new BufferedOutputStream(new FileOutputStream(tempFile))) {
 					response.transferTo(os);
 				} catch (IOException e) {
 					tempFile.delete();
@@ -390,7 +392,7 @@ protected void updateHeader(Headers response, int code) throws IOException, File
 				}
 			}
 			FileUtils.forceMkdir(file.getParentFile());
-			try (FileOutputStream out = new FileOutputStream(headerFile)) {
+			try (OutputStream out = new BufferedOutputStream(new FileOutputStream(headerFile))) {
 				// we store the header here, this might be a 404 response or (permanent)
 				// redirect we probably need to work with later on
 				header.store(out, null);

sisu-osgi/sisu-equinox-launching/src/main/java/org/eclipse/sisu/equinox/launching/internal/DefaultEquinoxInstallationFactory.java

@@ -150,7 +150,7 @@ public EquinoxInstallation createInstallation(EquinoxInstallationDescription des
             File configIni = new File(location, TychoConstants.CONFIG_INI_PATH);
             File configurationLocation = configIni.getParentFile();
             configurationLocation.mkdirs();
-            try (FileOutputStream fos = new FileOutputStream(configIni)) {
+            try (OutputStream fos = new BufferedOutputStream(new FileOutputStream(configIni))) {
                 p.store(fos, null);
             }
 
@@ -201,7 +201,7 @@ private Manifest getManifest(File file) throws IOException {
 
     /**
      * See
-     * 
+     *
      * <pre>
      * https://help.eclipse.org/latest/topic/org.eclipse.platform.doc.isv/reference/misc/runtime-options.html#osgidev
      * </pre>

tycho-core/src/main/java/org/eclipse/tycho/core/EcJLogFileEnhancer.java

@@ -14,11 +14,10 @@
 
 import java.io.File;
 import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
 import java.io.IOException;
-import java.io.OutputStreamWriter;
 import java.io.Writer;
 import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -93,7 +92,7 @@ private static void writeDocuments(Set<File> needsUpdate, Map<File, Document> do
             throws IOException, FileNotFoundException {
         for (File file : needsUpdate) {
             Document document = documents.get(file);
-            try (Writer w = new OutputStreamWriter(new FileOutputStream(file), StandardCharsets.UTF_8);
+            try (Writer w = Files.newBufferedWriter(file.toPath(), StandardCharsets.UTF_8);
                     XMLWriter xw = new XMLWriter(w)) {
                 document.toXML(xw);
             }

tycho-core/src/main/java/org/eclipse/tycho/core/maven/TychoMavenLifecycleParticipant.java

@@ -17,9 +17,8 @@
 
 import java.io.BufferedWriter;
 import java.io.File;
-import java.io.FileOutputStream;
 import java.io.IOException;
-import java.io.OutputStreamWriter;
+import java.nio.file.Files;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -129,7 +128,7 @@ public void afterProjectsRead(MavenSession session) throws MavenExecutionExcepti
         try {
             validate(projects);
 
-            // setting this system property to let EF figure out where the traffic 
+            // setting this system property to let EF figure out where the traffic
             // is coming from (#467418)
             System.setProperty(P2_USER_AGENT_KEY, P2_USER_AGENT_VALUE + TychoVersion.getTychoVersion());
 
@@ -163,8 +162,8 @@ public void afterProjectsRead(MavenSession session) throws MavenExecutionExcepti
                                 Set<MavenProject> visited = new HashSet<>();
                                 modelWriter.write(new File(project.getBasedir(), "pom-model.xml"), Map.of(),
                                         project.getModel());
-                                try (BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
-                                        new FileOutputStream(new File(project.getBasedir(), "requirements.txt"))))) {
+                                try (BufferedWriter writer = Files.newBufferedWriter(
+                                        new File(project.getBasedir(), "requirements.txt").toPath())) {
                                     writer.write(project.getId() + ":\r\n");
                                     dumpProjectRequirements(project, writer, closure, dependencyProjects, "\t",
                                             visited);
@@ -179,7 +178,7 @@ public void afterProjectsRead(MavenSession session) throws MavenExecutionExcepti
             }
         } catch (BuildFailureException e) {
             // build failure is not an internal (unexpected) error, so avoid printing a stack
-            // trace by wrapping it in MavenExecutionException   
+            // trace by wrapping it in MavenExecutionException
             throw new MavenExecutionException(e.getMessage(), e);
         }
         buildListeners.notifyBuildStart(session);

tycho-core/src/main/java/org/eclipse/tycho/core/resolver/MavenTargetDefinitionContent.java

@@ -12,6 +12,7 @@
  *******************************************************************************/
 package org.eclipse.tycho.core.resolver;
 
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -368,7 +369,8 @@ private IInstallableUnit generateSourceBundle(String symbolicName, String bundle
         attr.putValue(Constants.BUNDLE_NAME, "Source Bundle for " + symbolicName + ":" + bundleVersion);
         attr.putValue(Constants.BUNDLE_SYMBOLICNAME, symbolicName + ".source");
         attr.putValue(Constants.BUNDLE_VERSION, bundleVersion);
-        try (JarOutputStream stream = new JarOutputStream(new FileOutputStream(tempFile), manifest)) {
+        try (JarOutputStream stream = new JarOutputStream(new BufferedOutputStream(new FileOutputStream(tempFile)),
+                manifest)) {
             try (JarFile jar = new JarFile(sourceFile)) {
                 Enumeration<JarEntry> entries = jar.entries();
                 while (entries.hasMoreElements()) {

tycho-core/src/main/java/org/eclipse/tycho/p2/repository/ArtifactRepositoryBaseImpl.java

@@ -17,6 +17,7 @@
 import static org.eclipse.tycho.p2.repository.ArtifactProviderImplUtilities.canWriteToSink;
 import static org.eclipse.tycho.p2.repository.BundleConstants.BUNDLE_ID;
 
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
@@ -440,7 +441,7 @@ public OutputStream beginWrite() throws IllegalStateException, ArtifactSinkExcep
             artifactFile.getParentFile().mkdirs();
 
             try {
-                currentOutputStream = new FileOutputStream(artifactFile);
+                currentOutputStream = new BufferedOutputStream(new FileOutputStream(artifactFile));
             } catch (FileNotFoundException e) {
                 throw new ArtifactSinkException("I/O error while creating artifact file " + artifactFile, e);
             }

tycho-core/src/main/java/org/eclipse/tycho/p2/repository/FileBasedTychoRepositoryIndex.java

@@ -110,7 +110,7 @@ public synchronized void save() throws IOException {
             reconcile();
             // minimize time window for corrupting the file by first writing to a temp file, then moving it
             File tempFile = File.createTempFile("index", "tmp", indexFile.getParentFile());
-            write(new FileOutputStream(tempFile));
+            write(new BufferedOutputStream(new FileOutputStream(tempFile)));
             if (indexFile.isFile()) {
                 indexFile.delete();
             }

tycho-core/src/main/java/org/eclipse/tycho/p2/repository/module/ModuleArtifactMap.java

@@ -14,10 +14,12 @@
 
 import static org.eclipse.tycho.p2.repository.BundleConstants.BUNDLE_ID;
 
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
@@ -34,7 +36,7 @@
 /**
  * {@link RepositoryReader} that reads the artifact file locations from the
  * "local-artifacts.properties" file.
- * 
+ *
  * @see TychoConstants#FILE_NAME_LOCAL_ARTIFACTS
  */
 class ModuleArtifactMap {
@@ -56,7 +58,7 @@ public static ModuleArtifactMap createInstance(File repositoryRoot) throws Provi
     }
 
     private ModuleArtifactMap(File repositoryRoot) {
-        // TODO constant FILE_NAME_LOCAL_ARTIFACTS should only be needed here 
+        // TODO constant FILE_NAME_LOCAL_ARTIFACTS should only be needed here
         this.mapFile = new File(repositoryRoot, TychoConstants.FILE_NAME_LOCAL_ARTIFACTS);
         this.automaticArtifactFolder = new File(repositoryRoot, "extraArtifacts");
     }
@@ -143,7 +145,8 @@ private void store() throws ProvisionException {
             if (entry.getKey() == null) {
                 outputProperties.put(TychoConstants.KEY_ARTIFACT_MAIN, entry.getValue().getAbsolutePath());
             } else {
-                outputProperties.put(TychoConstants.KEY_ARTIFACT_ATTACHED + entry.getKey(), entry.getValue().getAbsolutePath());
+                outputProperties.put(TychoConstants.KEY_ARTIFACT_ATTACHED + entry.getKey(),
+                        entry.getValue().getAbsolutePath());
             }
         }
 
@@ -159,7 +162,7 @@ private void store() throws ProvisionException {
     }
 
     private static void writeProperties(Properties properties, File outputFile) throws IOException {
-        try (FileOutputStream outputStream = new FileOutputStream(outputFile);) {
+        try (OutputStream outputStream = new BufferedOutputStream(new FileOutputStream(outputFile))) {
             properties.store(outputStream, null);
         }
     }

tycho-core/src/main/java/org/eclipse/tycho/p2/resolver/FeatureGenerator.java

@@ -12,6 +12,7 @@
  *******************************************************************************/
 package org.eclipse.tycho.p2.resolver;
 
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -102,7 +103,7 @@ private static Feature createFeature(Element featureElement, List<IInstallableUn
         }
         File tempFile = File.createTempFile("feature", ".jar");
         tempFile.deleteOnExit();
-        try (JarOutputStream stream = new JarOutputStream(new FileOutputStream(tempFile))) {
+        try (JarOutputStream stream = new JarOutputStream(new BufferedOutputStream(new FileOutputStream(tempFile)))) {
             stream.putNextEntry(new ZipEntry(FEATURE_XML_ENTRY));
             OutputStreamWriter writer = new OutputStreamWriter(stream);
             prettyPrintXml(doc, writer);

tycho-core/src/main/java/org/eclipse/tycho/p2resolver/P2GeneratorImpl.java

@@ -13,10 +13,12 @@
  *******************************************************************************/
 package org.eclipse.tycho.p2resolver;
 
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
@@ -54,7 +56,6 @@
 import org.eclipse.equinox.p2.publisher.IPublisherResult;
 import org.eclipse.equinox.p2.publisher.PublisherInfo;
 import org.eclipse.equinox.p2.publisher.actions.IFeatureRootAdvice;
-import org.eclipse.tycho.p2maven.tmp.BundlesAction;
 import org.eclipse.equinox.p2.publisher.eclipse.Feature;
 import org.eclipse.equinox.p2.publisher.eclipse.FeaturesAction;
 import org.eclipse.equinox.p2.repository.artifact.IArtifactDescriptor;
@@ -92,6 +93,7 @@
 import org.eclipse.tycho.p2maven.actions.CategoryDependenciesAction;
 import org.eclipse.tycho.p2maven.actions.ProductDependenciesAction;
 import org.eclipse.tycho.p2maven.actions.ProductFile2;
+import org.eclipse.tycho.p2maven.tmp.BundlesAction;
 import org.osgi.framework.BundleException;
 
 @Component(role = P2Generator.class)
@@ -485,7 +487,7 @@ static void writeArtifactLocations(File outputFile, Map<String, File> artifactLo
     }
 
     private static void writeProperties(Properties properties, File outputFile) throws IOException {
-        try (FileOutputStream outputStream = new FileOutputStream(outputFile)) {
+        try (OutputStream outputStream = new BufferedOutputStream(new FileOutputStream(outputFile))) {
             properties.store(outputStream, null);
         }
     }

tycho-core/src/main/java/org/eclipse/tycho/p2tools/MirrorApplicationServiceImpl.java

@@ -13,9 +13,11 @@
  *******************************************************************************/
 package org.eclipse.tycho.p2tools;
 
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 import java.net.HttpURLConnection;
 import java.net.URI;
 import java.net.URLConnection;
@@ -521,7 +523,8 @@ private void writeP2Index(File repositoryDestination) throws FacadeException {
         properties.setProperty("version", "1");
         properties.setProperty("artifact.repository.factory.order", "artifacts.xml,!");
         properties.setProperty("metadata.repository.factory.order", "content.xml,!");
-        try (FileOutputStream stream = new FileOutputStream(new File(repositoryDestination, P2_INDEX_FILE))) {
+        try (OutputStream stream = new BufferedOutputStream(
+                new FileOutputStream(new File(repositoryDestination, P2_INDEX_FILE)))) {
             properties.store(stream, null);
         } catch (IOException e) {
             throw new FacadeException("writing index file failed", e);
@@ -531,7 +534,8 @@ private void writeP2Index(File repositoryDestination) throws FacadeException {
     private void compressXml(File repositoryDestination, String name) throws FacadeException {
         File jarFile = new File(repositoryDestination, name + ".jar");
         File xmlFile = new File(repositoryDestination, name + ".xml");
-        try (JarOutputStream jarOutputStream = new JarOutputStream(new FileOutputStream(jarFile))) {
+        try (JarOutputStream jarOutputStream = new JarOutputStream(
+                new BufferedOutputStream(new FileOutputStream(jarFile)))) {
             jarOutputStream.putNextEntry(new JarEntry(xmlFile.getName()));
             Files.copy(xmlFile.toPath(), jarOutputStream);
         } catch (IOException e) {

tycho-core/src/main/java/org/eclipse/tycho/p2tools/RepositoryReferenceTool.java

@@ -12,9 +12,11 @@
  *******************************************************************************/
 package org.eclipse.tycho.p2tools;
 
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 import java.util.HashSet;
 import java.util.Set;
 import java.util.stream.Collectors;
@@ -77,7 +79,7 @@ public class RepositoryReferenceTool {
      * <li>The results of the referenced reactor modules,
      * <li>The non-reactor content of the module's target platform.
      * </ol>
-     * 
+     *
      * @param module
      *            The current Maven project
      * @param session
@@ -120,7 +122,8 @@ private void addTargetPlatformRepository(RepositoryReferences sources, MavenSess
         try {
             File repositoryLocation = new File(project.getBuild().getDirectory(), "targetPlatformRepository");
             repositoryLocation.mkdirs();
-            try (FileOutputStream stream = new FileOutputStream(new File(repositoryLocation, "content.xml"))) {
+            try (OutputStream stream = new BufferedOutputStream(
+                    new FileOutputStream(new File(repositoryLocation, "content.xml")))) {
 
                 TargetPlatform targetPlatform = projectManager.getTargetPlatform(project)
                         .orElseThrow(() -> new MojoFailureException(TychoConstants.TYCHO_NOT_CONFIGURED + project));