dweiss commented on code in PR #14824:
URL: https://github.com/apache/lucene/pull/14824#discussion_r2159174610
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build-tools/build-infra/src/main/java/org/apache/lucene/gradle/plugins/spotless/ApplyGoogleJavaFormatTask.java:
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@@ -0,0 +1,77 @@
+package org.apache.lucene.gradle.plugins.spotless;
+
+import com.google.googlejavaformat.java.FormatterException;
+import org.gradle.api.file.ConfigurableFileCollection;
+import org.gradle.api.file.ProjectLayout;
+import org.gradle.api.tasks.TaskAction;
+import org.gradle.work.DisableCachingByDefault;
+import org.gradle.work.InputChanges;
+import org.gradle.workers.WorkAction;
+import org.gradle.workers.WorkParameters;
+import org.gradle.workers.WorkQueue;
+
+import javax.inject.Inject;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@DisableCachingByDefault
+public abstract class ApplyGoogleJavaFormatTask extends
ParentGoogleJavaFormatTask {
+ @Inject
+ public ApplyGoogleJavaFormatTask(ProjectLayout layout) {
+ super(layout, "apply");
+ }
+
+ @TaskAction
+ public void formatSources(InputChanges inputChanges) throws IOException {
+ WorkQueue workQueue = getWorkQueue();
+ List<File> sourceFiles = getIncrementalBatch(inputChanges);
+ if (sourceFiles.isEmpty()) {
+ return;
+ }
+
+ getLogger().info("Will apply formatting to {} source {} in this run.",
+ sourceFiles.size(), sourceFiles.size() == 1 ? "file" :
"files");
+
+ for (var sourceFile : sourceFiles) {
+ workQueue.submit(ApplyGoogleJavaFormatAction.class, params -> {
+ params.getTargetFiles().setFrom(List.of(sourceFile));
+ });
+ }
+
+ Path taskOutput = getOutputChangeListFile().get().getAsFile().toPath();
+ Files.writeString(
+ taskOutput,
+
sourceFiles.stream().map(File::getPath).collect(Collectors.joining("\n")));
+
+ workQueue.await();
+ }
+
+ public static abstract class ApplyGoogleJavaFormatAction implements
WorkAction<ApplyGoogleJavaFormatAction.Parameters> {
+ public interface Parameters extends WorkParameters {
+ ConfigurableFileCollection getTargetFiles();
+ }
+
+ @Override
+ public void execute() {
+ var formatter = getFormatter();
+
+ for (File inputFile : getParameters().getTargetFiles().getFiles())
{
+ var inputPath = inputFile.toPath();
+ try {
+ String input = Files.readString(inputPath);
+ String output = formatter.formatSourceAndFixImports(input);
+
+ if (!input.equals(output)) {
+ Files.writeString(inputPath, output);
+ }
Review Comment:
@breskeby this is one example where I think gradle build model doesn't shine
- for this task, the outputs and inputs overlap. It takes input files, formats
them and writes them back to the same location. I know Ned Twigg (spotless) had
similar problems.
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