Examples with Frame com.walmartlabs.concord.svm.Frame used on opensource projects

Example 1 with Frame

use of com.walmartlabs.concord.svm.Frame in project concord by walmartlabs.

the class Main method getTopLevelVariables.

private static Map<String, Serializable> getTopLevelVariables(ProcessSnapshot snapshot) {
    State state = snapshot.vmState();
    List<Frame> frames = state.getFrames(state.getRootThreadId());
    Frame rootFrame = frames.get(frames.size() - 1);
    return rootFrame.getLocals();
}

Example 2 with Frame

use of com.walmartlabs.concord.svm.Frame in project concord by walmartlabs.

the class TaskCallCommand method execute.

@Override
protected void execute(Runtime runtime, State state, ThreadId threadId) {
    Frame frame = state.peekFrame(threadId);
    frame.pop();
    Context ctx = runtime.getService(Context.class);
    TaskProviders taskProviders = runtime.getService(TaskProviders.class);
    ExpressionEvaluator expressionEvaluator = runtime.getService(ExpressionEvaluator.class);
    TaskCall call = getStep();
    String taskName = call.getName();
    Task t = taskProviders.createTask(ctx, taskName);
    if (t == null) {
        throw new IllegalStateException("Task not found: '" + taskName + "'");
    }
    TaskCallInterceptor interceptor = runtime.getService(TaskCallInterceptor.class);
    CallContext callContext = CallContext.builder().taskName(taskName).correlationId(ctx.execution().correlationId()).currentStep(getStep()).processDefinition(ctx.execution().processDefinition()).build();
    TaskCallOptions opts = Objects.requireNonNull(call.getOptions());
    Variables input = new MapBackedVariables(VMUtils.prepareInput(expressionEvaluator, ctx, opts.input(), opts.inputExpression()));
    TaskResult result;
    try {
        result = interceptor.invoke(callContext, Method.of(t, "execute", Collections.singletonList(input)), () -> t.execute(input));
    } catch (TaskException e) {
        result = TaskResult.fail(e.getCause());
    } catch (RuntimeException e) {
        throw e;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    TaskCallUtils.processTaskResult(runtime, ctx, taskName, opts, result);
}

Example 3 with Frame

use of com.walmartlabs.concord.svm.Frame in project concord by walmartlabs.

the class TaskResumeCommand method execute.

@Override
protected void execute(Runtime runtime, State state, ThreadId threadId) {
    Frame frame = state.peekFrame(threadId);
    frame.pop();
    Context ctx = runtime.getService(Context.class);
    String taskName = getStep().getName();
    TaskProviders taskProviders = runtime.getService(TaskProviders.class);
    Task task = taskProviders.createTask(ctx, getStep().getName());
    if (task == null) {
        throw new IllegalStateException("Task not found: " + taskName);
    }
    if (!(task instanceof ReentrantTask)) {
        throw new IllegalStateException("The task doesn't implement the " + ReentrantTask.class.getSimpleName() + " interface and cannot be used as a \"reentrant\" task: " + taskName);
    }
    ReentrantTask rt = (ReentrantTask) task;
    TaskCallInterceptor.CallContext callContext = TaskCallInterceptor.CallContext.builder().taskName(taskName).correlationId(ctx.execution().correlationId()).currentStep(getStep()).processDefinition(ctx.execution().processDefinition()).build();
    TaskCallInterceptor interceptor = runtime.getService(TaskCallInterceptor.class);
    TaskResult result;
    try {
        result = interceptor.invoke(callContext, TaskCallInterceptor.Method.of(rt, "resume", Collections.singletonList(event)), () -> rt.resume(event));
    } catch (TaskException e) {
        result = TaskResult.fail(e.getCause());
    } catch (RuntimeException e) {
        throw e;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    TaskCallUtils.processTaskResult(runtime, ctx, taskName, getStep().getOptions(), result);
}

Example 4 with Frame

use of com.walmartlabs.concord.svm.Frame in project concord by walmartlabs.

the class VMUtils method putLocal.

/**
 * Puts a local variable into the nearest root frame of the specified thread.
 * Only {@link Serializable} values are allowed.
 */
public static void putLocal(State state, ThreadId threadId, String key, Object value) {
    Frame root = assertNearestRoot(state, threadId);
    putLocal(root, key, value);
}

Example 5 with Frame

use of com.walmartlabs.concord.svm.Frame in project concord by walmartlabs.

the class VMUtils method getCombinedLocals.

/**
 * Returns a map of all variables combined, starting from the bottom of the stack.
 */
public static Map<String, Object> getCombinedLocals(State state, ThreadId threadId) {
    Map<String, Object> result = new LinkedHashMap<>();
    List<Frame> frames = state.getFrames(threadId);
    for (int i = frames.size() - 1; i >= 0; i--) {
        Frame f = frames.get(i);
        result.putAll(f.getLocals());
    }
    return Collections.unmodifiableMap(result);
}