Examples with ParallelBlockOptions com.walmartlabs.concord.runtime.v2.model.ParallelBlockOptions used on opensource projects

Example 1 with ParallelBlockOptions

use of com.walmartlabs.concord.runtime.v2.model.ParallelBlockOptions in project concord by walmartlabs.

the class ParallelCommand method execute.

@Override
protected void execute(Runtime runtime, State state, ThreadId threadId) {
    Frame frame = state.peekFrame(threadId);
    frame.pop();
    // parallel execution consist of "forks" for each command running in separate threads
    // and a combined "join" executing in the parent (current) thread
    List<Map.Entry<ThreadId, Command>> forks = commands.stream().map(e -> new AbstractMap.SimpleEntry<>(state.nextThreadId(), e)).collect(Collectors.toList());
    ParallelBlockOptions opts = Objects.requireNonNull(getStep().getOptions());
    Command outVarsCommand;
    if (!opts.outExpr().isEmpty()) {
        Map<String, Object> accumulator = new ConcurrentHashMap<>();
        outVarsCommand = new CollectVariablesCommand(accumulator);
        frame.push(new EvalVariablesCommand(runtime.getService(Context.class), accumulator, opts.outExpr(), frame));
    } else {
        outVarsCommand = new CopyVariablesCommand(opts.out(), State::peekFrame, frame);
    }
    Collection<ThreadId> forkIds = forks.stream().map(Map.Entry::getKey).collect(Collectors.toSet());
    frame.push(new JoinCommand(forkIds));
    Collections.reverse(forks);
    forks.forEach(f -> {
        Command cmd = new ForkCommand(f.getKey(), outVarsCommand, f.getValue());
        frame.push(cmd);
    });
}