<commit_before>/*
 * Copyright 2020 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gradle.internal.classpath;

import org.gradle.api.GradleException;
import org.gradle.api.UncheckedIOException;
import org.gradle.api.file.RelativePath;
import org.gradle.api.internal.file.archive.ZipEntry;
import org.gradle.api.internal.file.archive.ZipInput;
import org.gradle.api.internal.file.archive.impl.FileZipInput;
import org.gradle.internal.Pair;
import org.gradle.internal.UncheckedException;
import org.gradle.internal.file.FileException;
import org.gradle.internal.file.FileType;
import org.gradle.internal.hash.HashCode;
import org.gradle.internal.hash.Hasher;
import org.gradle.internal.hash.Hashing;
import org.gradle.internal.io.ExponentialBackoff;
import org.gradle.internal.snapshot.FileSystemLocationSnapshot;
import org.gradle.util.GFileUtils;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.ClassWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.IOException;
import java.nio.file.FileAlreadyExistsException;
import java.util.concurrent.TimeUnit;

import static java.lang.String.format;

class InstrumentingClasspathFileTransformer implements ClasspathFileTransformer {
    private static final Logger LOGGER = LoggerFactory.getLogger(InstrumentingClasspathFileTransformer.class);
    private static final int CACHE_FORMAT = 2;

    private final ClasspathWalker classpathWalker;
    private final ClasspathBuilder classpathBuilder;
    private final CachedClasspathTransformer.Transform transform;
    private final HashCode configHash;

    public InstrumentingClasspathFileTransformer(ClasspathWalker classpathWalker, ClasspathBuilder classpathBuilder, CachedClasspathTransformer.Transform transform) {
        this.classpathWalker = classpathWalker;
        this.classpathBuilder = classpathBuilder;
        this.transform = transform;
        this.configHash = configHashFor(transform);
    }

    private HashCode configHashFor(CachedClasspathTransformer.Transform transform) {
        Hasher hasher = Hashing.defaultFunction().newHasher();
        hasher.putInt(CACHE_FORMAT);
        transform.applyConfigurationTo(hasher);
        return hasher.hash();
    }

    @Override
    public File transform(File source, FileSystemLocationSnapshot sourceSnapshot, File cacheDir) {
        String name = sourceSnapshot.getType() == FileType.Directory
            ? source.getName() + ".jar"
            : source.getName();
        String destFileName = hashOf(sourceSnapshot).toString() + '/' + name;
        return transformIfNeeded(source, cacheDir, destFileName);
    }

    private File transformIfNeeded(File source, File cacheDir, String destFileName) {
        File receipt = new File(cacheDir, destFileName + ".receipt");
        File transformed = new File(cacheDir, destFileName);
        if (receipt.isFile()) {
            return transformed;
        }
        if (transformed.isFile()) {
            // A concurrent writer has already started writing to the file.
            // Just wait until the transformed file is ready for consumption.
            waitForReceiptOf(destFileName, receipt);
            return transformed;
        }
        try {
            transform(source, transformed);
        } catch (GradleException e) {
            if (e.getCause() instanceof FileAlreadyExistsException) {
                // A concurrent writer has already started writing to the file.
                // We run identical transforms concurrently and we can sometimes finish two transforms at the same
                // time in a way that Files.move (see [ClasspathBuilder.nonReplacingJar]) will see [transformed] created before
                // the move is done.
                // Just wait until the transformed file is ready for consumption.
                LOGGER.debug("Instrumented classpath file '{}' already exists.", destFileName, e);
                waitForReceiptOf(destFileName, receipt);
                return transformed;
            } else {
                throw e;
            }
        }
        try {<commit_msg>Let `InstrumentingClasspathFileTransformer` handle copy failures<commit_after>/*
 * Copyright 2020 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gradle.internal.classpath;

import org.gradle.api.UncheckedIOException;
import org.gradle.api.file.RelativePath;
import org.gradle.api.internal.file.archive.ZipEntry;
import org.gradle.api.internal.file.archive.ZipInput;
import org.gradle.api.internal.file.archive.impl.FileZipInput;
import org.gradle.internal.Pair;
import org.gradle.internal.UncheckedException;
import org.gradle.internal.file.FileException;
import org.gradle.internal.file.FileType;
import org.gradle.internal.hash.HashCode;
import org.gradle.internal.hash.Hasher;
import org.gradle.internal.hash.Hashing;
import org.gradle.internal.io.ExponentialBackoff;
import org.gradle.internal.snapshot.FileSystemLocationSnapshot;
import org.gradle.util.GFileUtils;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.ClassWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.IOException;
import java.nio.file.FileAlreadyExistsException;
import java.util.concurrent.TimeUnit;

import static java.lang.String.format;

class InstrumentingClasspathFileTransformer implements ClasspathFileTransformer {
    private static final Logger LOGGER = LoggerFactory.getLogger(InstrumentingClasspathFileTransformer.class);
    private static final int CACHE_FORMAT = 2;

    private final ClasspathWalker classpathWalker;
    private final ClasspathBuilder classpathBuilder;
    private final CachedClasspathTransformer.Transform transform;
    private final HashCode configHash;

    public InstrumentingClasspathFileTransformer(ClasspathWalker classpathWalker, ClasspathBuilder classpathBuilder, CachedClasspathTransformer.Transform transform) {
        this.classpathWalker = classpathWalker;
        this.classpathBuilder = classpathBuilder;
        this.transform = transform;
        this.configHash = configHashFor(transform);
    }

    private HashCode configHashFor(CachedClasspathTransformer.Transform transform) {
        Hasher hasher = Hashing.defaultFunction().newHasher();
        hasher.putInt(CACHE_FORMAT);
        transform.applyConfigurationTo(hasher);
        return hasher.hash();
    }

    @Override
    public File transform(File source, FileSystemLocationSnapshot sourceSnapshot, File cacheDir) {
        String name = sourceSnapshot.getType() == FileType.Directory
            ? source.getName() + ".jar"
            : source.getName();
        String destFileName = hashOf(sourceSnapshot).toString() + '/' + name;
        return transformIfNeeded(source, cacheDir, destFileName);
    }

    private File transformIfNeeded(File source, File cacheDir, String destFileName) {
        File receipt = new File(cacheDir, destFileName + ".receipt");
        File transformed = new File(cacheDir, destFileName);
        if (receipt.isFile()) {
            return transformed;
        }
        if (transformed.isFile()) {
            // A concurrent writer has already started writing to the file.
            // Just wait until the transformed file is ready for consumption.
            waitForReceiptOf(destFileName, receipt);
            return transformed;
        }
        try {
            transform(source, transformed);
        } catch (RuntimeException e) {
            if (e.getCause() instanceof FileAlreadyExistsException) {
                // A concurrent writer has already started writing to the file.
                // We run identical transforms concurrently and we can sometimes finish two transforms at the same
                // time in a way that Files.move (see [ClasspathBuilder.nonReplacingJar]) will see [transformed] created before
                // the move is done.
                // Just wait until the transformed file is ready for consumption.
                LOGGER.debug("Instrumented classpath file '{}' already exists.", destFileName, e);
                waitForReceiptOf(destFileName, receipt);
                return transformed;
            } else {
                throw e;
            }
        }
        try {
{'fraction_non_alphanumeric': 0.07942391189240708, 'fraction_numerical': 0.002329768082177274, 'mean_word_length': 3.3044667274384687, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 2, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '2021632', 'n_tokens_mistral': 2466, 'n_tokens_neox': 2340, 'n_words': 700}