Examples with Jib com.google.cloud.tools.jib.api.Jib used on opensource projects

Example 6 with Jib

use of com.google.cloud.tools.jib.api.Jib in project jib by GoogleContainerTools.

the class PluginConfigurationProcessor method computeEntrypoint.

/**
 * Computes the container entrypoint.
 *
 * <p>Computation occurs in this order:
 *
 * <ol>
 *   <li>null (inheriting from the base image), if the user specified value is {@code INHERIT}
 *   <li>the user specified one, if set
 *   <li>for a WAR project, null (inheriting) if a custom base image is specified, and {@code
 *       ["java", "-jar", "/usr/local/jetty/start.jar"]} otherwise (default Jetty base image)
 *   <li>for a non-WAR project, by resolving the main class
 * </ol>
 *
 * @param rawConfiguration raw configuration data
 * @param projectProperties used for providing additional information
 * @param jibContainerBuilder container builder
 * @return the entrypoint
 * @throws MainClassInferenceException if no valid main class is configured or discovered
 * @throws InvalidAppRootException if {@code appRoot} value is not an absolute Unix path
 * @throws InvalidContainerizingModeException if {@code containerizingMode} value is invalid
 */
@Nullable
@VisibleForTesting
static List<String> computeEntrypoint(RawConfiguration rawConfiguration, ProjectProperties projectProperties, JibContainerBuilder jibContainerBuilder) throws MainClassInferenceException, InvalidAppRootException, IOException, InvalidContainerizingModeException {
    Optional<List<String>> rawEntrypoint = rawConfiguration.getEntrypoint();
    List<String> rawExtraClasspath = rawConfiguration.getExtraClasspath();
    boolean entrypointDefined = rawEntrypoint.isPresent() && !rawEntrypoint.get().isEmpty();
    if (entrypointDefined && (rawConfiguration.getMainClass().isPresent() || !rawConfiguration.getJvmFlags().isEmpty() || !rawExtraClasspath.isEmpty() || rawConfiguration.getExpandClasspathDependencies())) {
        projectProperties.log(LogEvent.warn("mainClass, extraClasspath, jvmFlags, and expandClasspathDependencies are ignored " + "when entrypoint is specified"));
    }
    if (projectProperties.isWarProject()) {
        if (entrypointDefined) {
            return rawEntrypoint.get().size() == 1 && "INHERIT".equals(rawEntrypoint.get().get(0)) ? null : rawEntrypoint.get();
        }
        if (rawConfiguration.getMainClass().isPresent() || !rawConfiguration.getJvmFlags().isEmpty() || !rawExtraClasspath.isEmpty() || rawConfiguration.getExpandClasspathDependencies()) {
            projectProperties.log(LogEvent.warn("mainClass, extraClasspath, jvmFlags, and expandClasspathDependencies are ignored " + "for WAR projects"));
        }
        return rawConfiguration.getFromImage().isPresent() ? // Inherit if a custom base image.
        null : Arrays.asList("java", "-jar", "/usr/local/jetty/start.jar");
    }
    List<String> classpath = new ArrayList<>(rawExtraClasspath);
    AbsoluteUnixPath appRoot = getAppRootChecked(rawConfiguration, projectProperties);
    ContainerizingMode mode = getContainerizingModeChecked(rawConfiguration, projectProperties);
    switch(mode) {
        case EXPLODED:
            classpath.add(appRoot.resolve("resources").toString());
            classpath.add(appRoot.resolve("classes").toString());
            break;
        case PACKAGED:
            classpath.add(appRoot.resolve("classpath/*").toString());
            break;
        default:
            throw new IllegalStateException("unknown containerizing mode: " + mode);
    }
    if (projectProperties.getMajorJavaVersion() >= 9 || rawConfiguration.getExpandClasspathDependencies()) {
        List<Path> jars = projectProperties.getDependencies();
        Map<String, Long> occurrences = jars.stream().map(path -> path.getFileName().toString()).collect(Collectors.groupingBy(filename -> filename, Collectors.counting()));
        List<String> duplicates = occurrences.entrySet().stream().filter(entry -> entry.getValue() > 1).map(Map.Entry::getKey).collect(Collectors.toList());
        for (Path jar : jars) {
            // Handle duplicates by appending filesize to the end of the file. This renaming logic
            // must be in sync with the code that does the same in the other place. See
            // https://github.com/GoogleContainerTools/jib/issues/3331
            String jarName = jar.getFileName().toString();
            if (duplicates.contains(jarName)) {
                jarName = jarName.replaceFirst("\\.jar$", "-" + Files.size(jar)) + ".jar";
            }
            classpath.add(appRoot.resolve("libs").resolve(jarName).toString());
        }
    } else {
        classpath.add(appRoot.resolve("libs/*").toString());
    }
    String classpathString = String.join(":", classpath);
    String mainClass;
    try {
        mainClass = MainClassResolver.resolveMainClass(rawConfiguration.getMainClass().orElse(null), projectProperties);
    } catch (MainClassInferenceException ex) {
        if (entrypointDefined) {
            // We will use the user-given entrypoint, so don't fail.
            mainClass = "could-not-infer-a-main-class";
        } else {
            throw ex;
        }
    }
    addJvmArgFilesLayer(rawConfiguration, projectProperties, jibContainerBuilder, classpathString, mainClass);
    if (projectProperties.getMajorJavaVersion() >= 9) {
        classpathString = "@" + appRoot.resolve(JIB_CLASSPATH_FILE);
    }
    if (entrypointDefined) {
        return rawEntrypoint.get().size() == 1 && "INHERIT".equals(rawEntrypoint.get().get(0)) ? null : rawEntrypoint.get();
    }
    List<String> entrypoint = new ArrayList<>(4 + rawConfiguration.getJvmFlags().size());
    entrypoint.add("java");
    entrypoint.addAll(rawConfiguration.getJvmFlags());
    entrypoint.add("-cp");
    entrypoint.add(classpathString);
    entrypoint.add(mainClass);
    return entrypoint;
}