org.gradle.api.internal.TaskInternal Java Examples

public void execute(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
    List<String> messages = new ArrayList<String>();
    for (TaskValidator validator : task.getValidators()) {
        validator.validate(task, messages);
    }
    if (!messages.isEmpty()) {
        List<InvalidUserDataException> causes = new ArrayList<InvalidUserDataException>();
        messages = messages.subList(0, Math.min(5, messages.size()));
        for (String message : messages) {
            causes.add(new InvalidUserDataException(message));
        }
        String errorMessage;
        if (messages.size() == 1) {
            errorMessage = String.format("A problem was found with the configuration of %s.", task);
        } else {
            errorMessage = String.format("Some problems were found with the configuration of %s.", task);
        }
        state.executed(new TaskValidationException(errorMessage, causes));
        return;
    }
    executer.execute(task, state, context);
}
 

/**
 * Finds tasks that will have exactly the given name, without necessarily creating or configuring the tasks. Returns null if no such match found.
 */
@Nullable
public TaskSelectionResult selectWithName(String name, Project project, boolean includeSubProjects) {
    if (!includeSubProjects) {
        TaskInternal task = (TaskInternal) project.getTasks().findByName(name);
        if (task != null) {
            return new FixedTaskSelectionResult(Collections.<Task>singleton(task));
        }
    } else {
        LinkedHashSet<Task> tasks = new LinkedHashSet<Task>();
        new MultiProjectTaskSelectionResult(name, project).collectTasks(tasks);
        if (!tasks.isEmpty()) {
            return new FixedTaskSelectionResult(tasks);
        }
    }

    return null;
}
 

public TaskArtifactState getStateFor(final TaskInternal task) {

        if (!task.getOutputs().getHasOutput()) { // Only false if no declared outputs AND no Task.upToDateWhen spec. We force to true for incremental tasks.
            return new NoHistoryArtifactState();
        }

        final TaskArtifactState state = repository.getStateFor(task);

        if (startParameter.isRerunTasks()) {
            return new RerunTaskArtifactState(state, task, "Executed with '--rerun-tasks'.");
        }

        if (!task.getOutputs().getUpToDateSpec().isSatisfiedBy(task)) {
            return new RerunTaskArtifactState(state, task, "Task.upToDateWhen is false.");
        }

        return state;
    }
 

public void execute(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
    List<String> messages = new ArrayList<String>();
    for (TaskValidator validator : task.getValidators()) {
        validator.validate(task, messages);
    }
    if (!messages.isEmpty()) {
        List<InvalidUserDataException> causes = new ArrayList<InvalidUserDataException>();
        messages = messages.subList(0, Math.min(5, messages.size()));
        for (String message : messages) {
            causes.add(new InvalidUserDataException(message));
        }
        String errorMessage;
        if (messages.size() == 1) {
            errorMessage = String.format("A problem was found with the configuration of %s.", task);
        } else {
            errorMessage = String.format("Some problems were found with the configuration of %s.", task);
        }
        state.executed(new TaskValidationException(errorMessage, causes));
        return;
    }
    executer.execute(task, state, context);
}
 

public TaskInternal createTask(Map<String, ?> args) {
    TaskInternal task = taskFactory.createTask(args);
    TaskClassInfo taskClassInfo = getTaskClassInfo(task.getClass());

    if (taskClassInfo.incremental) {
        // Add a dummy upToDateWhen spec: this will for TaskOutputs.hasOutputs() to be true.
        task.getOutputs().upToDateWhen(new Spec<Task>() {
            public boolean isSatisfiedBy(Task element) {
                return true;
            }
        });
    }

    for (Factory<Action<Task>> actionFactory : taskClassInfo.taskActions) {
        task.doFirst(actionFactory.create());
    }

    if (taskClassInfo.validator != null) {
        task.doFirst(taskClassInfo.validator);
        taskClassInfo.validator.addInputsAndOutputs(task);
    }

    return task;
}
 

private TaskInternal createTaskObject(ProjectInternal project, final Class<? extends TaskInternal> type, String name, boolean generateGetters) {
    if (!Task.class.isAssignableFrom(type)) {
        throw new InvalidUserDataException(String.format(
                "Cannot create task of type '%s' as it does not implement the Task interface.",
                type.getSimpleName()));
    }

    final Class<? extends TaskInternal> generatedType;
    if (generateGetters) {
        generatedType = generator.generate(type);
    } else {
        generatedType = type;
    }

    return AbstractTask.injectIntoNewInstance(project, name, new Callable<TaskInternal>() {
        public TaskInternal call() throws Exception {
            try {
                return instantiator.newInstance(generatedType);
            } catch (ObjectInstantiationException e) {
                throw new TaskInstantiationException(String.format("Could not create task of type '%s'.", type.getSimpleName()),
                        e.getCause());
            }
        }
    });
}
 

public TaskArtifactState getStateFor(final TaskInternal task) {

        if (!task.getOutputs().getHasOutput()) { // Only false if no declared outputs AND no Task.upToDateWhen spec. We force to true for incremental tasks.
            return new NoHistoryArtifactState();
        }

        final TaskArtifactState state = repository.getStateFor(task);

        if (startParameter.isRerunTasks()) {
            return new RerunTaskArtifactState(state, task, "Executed with '--rerun-tasks'.");
        }

        if (!task.getOutputs().getUpToDateSpec().isSatisfiedBy(task)) {
            return new RerunTaskArtifactState(state, task, "Task.upToDateWhen is false.");
        }

        return state;
    }
 

public TaskArtifactState getStateFor(final TaskInternal task) {

        if (!task.getOutputs().getHasOutput()) { // Only false if no declared outputs AND no Task.upToDateWhen spec. We force to true for incremental tasks.
            return new NoHistoryArtifactState();
        }

        final TaskArtifactState state = repository.getStateFor(task);

        if (startParameter.isRerunTasks()) {
            return new RerunTaskArtifactState(state, task, "Executed with '--rerun-tasks'.");
        }

        if (!task.getOutputs().getUpToDateSpec().isSatisfiedBy(task)) {
            return new RerunTaskArtifactState(state, task, "Task.upToDateWhen is false.");
        }

        return state;
    }
 

private TaskInternal createTaskObject(ProjectInternal project, final Class<? extends TaskInternal> type, String name, boolean generateGetters) {
    if (!Task.class.isAssignableFrom(type)) {
        throw new InvalidUserDataException(String.format(
                "Cannot create task of type '%s' as it does not implement the Task interface.",
                type.getSimpleName()));
    }

    final Class<? extends TaskInternal> generatedType;
    if (generateGetters) {
        generatedType = generator.generate(type);
    } else {
        generatedType = type;
    }

    return AbstractTask.injectIntoNewInstance(project, name, new Callable<TaskInternal>() {
        public TaskInternal call() throws Exception {
            try {
                return instantiator.newInstance(generatedType);
            } catch (ObjectInstantiationException e) {
                throw new TaskInstantiationException(String.format("Could not create task of type '%s'.", type.getSimpleName()),
                        e.getCause());
            }
        }
    });
}
 

public TaskInternal createTask(Map<String, ?> args) {
    TaskInternal task = taskFactory.createTask(args);
    TaskClassInfo taskClassInfo = getTaskClassInfo(task.getClass());

    // TODO:DAZ Make this more general purpose, and support IncrementalTaskActions added via another mechanism.
    if (taskClassInfo.incremental) {
        // Add a dummy upToDateWhen spec: this will for TaskOutputs.hasOutputs() to be true.
        task.getOutputs().upToDateWhen(new Spec<Task>() {
            public boolean isSatisfiedBy(Task element) {
                return true;
            }
        });
    }

    for (Factory<Action<Task>> actionFactory : taskClassInfo.taskActions) {
        task.doFirst(actionFactory.create());
    }

    if (taskClassInfo.validator != null) {
        task.doFirst(taskClassInfo.validator);
        taskClassInfo.validator.addInputsAndOutputs(task);
    }

    return task;
}
 

public void execute(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
    boolean skip;
    try {
        skip = !task.getOnlyIf().isSatisfiedBy(task);
    } catch (Throwable t) {
        state.executed(new GradleException(String.format("Could not evaluate onlyIf predicate for %s.", task), t));
        return;
    }

    if (skip) {
        LOGGER.info("Skipping {} as task onlyIf is false.", task);
        state.skipped("SKIPPED");
        return;
    }

    executer.execute(task, state, context);
}
 

public TaskInternal createTask(Map<String, ?> args) {
    TaskInternal task = taskFactory.createTask(args);
    TaskClassInfo taskClassInfo = getTaskClassInfo(task.getClass());

    if (taskClassInfo.incremental) {
        // Add a dummy upToDateWhen spec: this will for TaskOutputs.hasOutputs() to be true.
        task.getOutputs().upToDateWhen(new Spec<Task>() {
            public boolean isSatisfiedBy(Task element) {
                return true;
            }
        });
    }

    for (Factory<Action<Task>> actionFactory : taskClassInfo.taskActions) {
        task.doFirst(actionFactory.create());
    }

    if (taskClassInfo.validator != null) {
        task.doFirst(taskClassInfo.validator);
        taskClassInfo.validator.addInputsAndOutputs(task);
    }

    return task;
}
 

public TaskArtifactState getStateFor(final TaskInternal task) {

        if (!task.getOutputs().getHasOutput()) { // Only false if no declared outputs AND no Task.upToDateWhen spec. We force to true for incremental tasks.
            return new NoHistoryArtifactState();
        }

        final TaskArtifactState state = repository.getStateFor(task);

        if (startParameter.isRerunTasks()) {
            return new RerunTaskArtifactState(state, task, "Executed with '--rerun-tasks'.");
        }

        if (!task.getOutputs().getUpToDateSpec().isSatisfiedBy(task)) {
            return new RerunTaskArtifactState(state, task, "Task.upToDateWhen is false.");
        }

        return state;
    }
 

public TaskInternal createTask(Map<String, ?> args) {
    Map<String, Object> actualArgs = new HashMap<String, Object>(args);
    checkTaskArgsAndCreateDefaultValues(actualArgs);

    String name = actualArgs.get(Task.TASK_NAME).toString();
    if (!GUtil.isTrue(name)) {
        throw new InvalidUserDataException("The task name must be provided.");
    }

    Class<? extends TaskInternal> type = (Class) actualArgs.get(Task.TASK_TYPE);
    Boolean generateSubclass = Boolean.valueOf(actualArgs.get(GENERATE_SUBCLASS).toString());
    TaskInternal task = createTaskObject(project, type, name, generateSubclass);

    Object dependsOnTasks = actualArgs.get(Task.TASK_DEPENDS_ON);
    if (dependsOnTasks != null) {
        task.dependsOn(dependsOnTasks);
    }
    Object description = actualArgs.get(Task.TASK_DESCRIPTION);
    if (description != null) {
        task.setDescription(description.toString());
    }
    Object group = actualArgs.get(Task.TASK_GROUP);
    if (group != null) {
        task.setGroup(group.toString());
    }
    Object action = actualArgs.get(Task.TASK_ACTION);
    if (action instanceof Action) {
        Action<? super Task> taskAction = (Action<? super Task>) action;
        task.doFirst(taskAction);
    } else if (action != null) {
        Closure closure = (Closure) action;
        task.doFirst(closure);
    }

    return task;
}
 

public static TaskStateChanges create(final TaskInternal task, final TaskExecution previousExecution) {
    return new SimpleTaskStateChanges() {
        @Override
        protected void addAllChanges(List<TaskStateChange> changes) {
            if (previousExecution == null) {
                changes.add(new DescriptiveChange("No history is available."));
            }
        }
    };
}
 

public void execute(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
    LOGGER.debug("Determining if {} is up-to-date", task);
    Clock clock = new Clock();
    TaskArtifactState taskArtifactState = repository.getStateFor(task);
    try {
        List<String> messages = new ArrayList<String>();
        if (taskArtifactState.isUpToDate(messages)) {
            LOGGER.info("Skipping {} as it is up-to-date (took {}).", task, clock.getTime());
            state.upToDate();
            return;
        }
        logOutOfDateMessages(messages, task, clock.getTime());

        task.getOutputs().setHistory(taskArtifactState.getExecutionHistory());
        context.setTaskArtifactState(taskArtifactState);

        taskArtifactState.beforeTask();
        try {
            executer.execute(task, state, context);
            if (state.getFailure() == null) {
                taskArtifactState.afterTask();
            }
        } finally {
            task.getOutputs().setHistory(null);
            context.setTaskArtifactState(null);
        }
    } finally {
        taskArtifactState.finished();
    }
}
 

public void execute(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
    LOGGER.debug("Determining if {} is up-to-date", task);
    Clock clock = new Clock();
    TaskArtifactState taskArtifactState = repository.getStateFor(task);
    try {
        List<String> messages = new ArrayList<String>();
        if (taskArtifactState.isUpToDate(messages)) {
            LOGGER.info("Skipping {} as it is up-to-date (took {}).", task, clock.getTime());
            state.upToDate();
            return;
        }
        logOutOfDateMessages(messages, task, clock.getTime());

        task.getOutputs().setHistory(taskArtifactState.getExecutionHistory());
        context.setTaskArtifactState(taskArtifactState);

        taskArtifactState.beforeTask();
        try {
            executer.execute(task, state, context);
            if (state.getFailure() == null) {
                taskArtifactState.afterTask();
            }
        } finally {
            task.getOutputs().setHistory(null);
            context.setTaskArtifactState(null);
        }
    } finally {
        taskArtifactState.finished();
    }
}
 

private TaskHistory loadHistory(final TaskInternal task) {
    return cacheAccess.useCache("Load task history", new Factory<TaskHistory>() {
        public TaskHistory create() {
            ClassLoader original = serializer.getClassLoader();
            serializer.setClassLoader(task.getClass().getClassLoader());
            try {
                TaskHistory history = taskHistoryCache.get(task.getPath());
                return history == null ? new TaskHistory() : history;
            } finally {
                serializer.setClassLoader(original);
            }
        }
    });
}
 

private TaskHistory loadHistory(final TaskInternal task) {
    return cacheAccess.useCache("Load task history", new Factory<TaskHistory>() {
        public TaskHistory create() {
            ClassLoader original = serializer.getClassLoader();
            serializer.setClassLoader(task.getClass().getClassLoader());
            try {
                TaskHistory history = taskHistoryCache.get(task.getPath());
                return history == null ? new TaskHistory() : history;
            } finally {
                serializer.setClassLoader(original);
            }
        }
    });
}
 

public TaskInternal createTask(Map<String, ?> args) {
    Map<String, Object> actualArgs = new HashMap<String, Object>(args);
    checkTaskArgsAndCreateDefaultValues(actualArgs);

    String name = actualArgs.get(Task.TASK_NAME).toString();
    if (!GUtil.isTrue(name)) {
        throw new InvalidUserDataException("The task name must be provided.");
    }

    Class<? extends TaskInternal> type = (Class) actualArgs.get(Task.TASK_TYPE);
    Boolean generateSubclass = Boolean.valueOf(actualArgs.get(GENERATE_SUBCLASS).toString());
    TaskInternal task = createTaskObject(project, type, name, generateSubclass);

    Object dependsOnTasks = actualArgs.get(Task.TASK_DEPENDS_ON);
    if (dependsOnTasks != null) {
        task.dependsOn(dependsOnTasks);
    }
    Object description = actualArgs.get(Task.TASK_DESCRIPTION);
    if (description != null) {
        task.setDescription(description.toString());
    }
    Object group = actualArgs.get(Task.TASK_GROUP);
    if (group != null) {
        task.setGroup(group.toString());
    }
    Object action = actualArgs.get(Task.TASK_ACTION);
    if (action instanceof Action) {
        Action<? super Task> taskAction = (Action<? super Task>) action;
        task.doFirst(taskAction);
    } else if (action != null) {
        Closure closure = (Closure) action;
        task.doFirst(closure);
    }

    return task;
}
 

private void executeAction(TaskInternal task, ContextAwareTaskAction action, TaskExecutionContext context) {
    action.contextualise(context);
    try {
        action.execute(task);
    } finally {
        action.contextualise(null);
    }
}
 

private void collect(Project project, Collection<? super Task> tasks) {
    TaskInternal task = (TaskInternal) project.getTasks().findByName(taskName);
    if (task != null) {
        tasks.add(task);
        if (task.getImpliesSubProjects()) {
            return;
        }
    }
    for (Project subProject : project.getChildProjects().values()) {
        collect(subProject, tasks);
    }
}
 

private void executeTask(TaskInfo taskInfo) {
    TaskInternal task = taskInfo.getTask();
    synchronized (lock) {
        taskListener.beforeExecute(task);
    }
    try {
        task.executeWithoutThrowingTaskFailure();
    } finally {
        synchronized (lock) {
            taskListener.afterExecute(task, task.getState());
        }
    }
}
 

public void execute(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
    if (task.getInputs().getHasSourceFiles() && task.getInputs().getSourceFiles().isEmpty()) {
        LOGGER.info("Skipping {} as it has no source files.", task);
        state.upToDate();
        return;
    }
    executer.execute(task, state, context);
}
 

public void addInputsAndOutputs(final TaskInternal task) {
    task.addValidator(this);
    for (final PropertyInfo property : properties) {
        Callable<Object> futureValue = new Callable<Object>() {
            public Object call() throws Exception {
                return property.getValue(task).getValue();
            }
        };

        property.configureAction.update(task, futureValue);
    }
}
 

public void execute(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
    if (task.getInputs().getHasSourceFiles() && task.getInputs().getSourceFiles().isEmpty()) {
        LOGGER.info("Skipping {} as it has no source files.", task);
        state.upToDate();
        return;
    }
    executer.execute(task, state, context);
}
 

private TaskHistory loadHistory(final TaskInternal task) {
    return cacheAccess.useCache("Load task history", new Factory<TaskHistory>() {
        public TaskHistory create() {
            ClassLoader original = serializer.getClassLoader();
            serializer.setClassLoader(task.getClass().getClassLoader());
            try {
                TaskHistory history = taskHistoryCache.get(task.getPath());
                return history == null ? new TaskHistory() : history;
            } finally {
                serializer.setClassLoader(original);
            }
        }
    });
}
 

private void executeTask(TaskInfo taskInfo) {
    TaskInternal task = taskInfo.getTask();
    synchronized (lock) {
        taskListener.beforeExecute(task);
    }
    try {
        task.executeWithoutThrowingTaskFailure();
    } finally {
        synchronized (lock) {
            taskListener.afterExecute(task, task.getState());
        }
    }
}
 

private void addCheck(ProjectInternal project) {
    addPlaceholderAction(project, CHECK_TASK_NAME, DefaultTask.class, new Action<TaskInternal>() {
        @Override
        public void execute(TaskInternal checkTask) {
            checkTask.setDescription("Runs all checks.");
            checkTask.setGroup(VERIFICATION_GROUP);
        }
    });
}
 

public void execute(TaskInternal task, TaskStateInternal state, TaskExecutionContext context) {
    if (state.getExecuted()) {
        return;
    }
    LOGGER.debug("Starting to execute {}", task);
    try {
        executer.execute(task, state, context);
    } finally {
        state.executed();
        LOGGER.debug("Finished executing {}", task);
    }
}