private string generateExecCounterNode(string nidSwitchActivity)
{
var sb = new StringBuilder();
var nSteps =
from a in _activities
select a.Behavior.StepTimings.Count();
sb.AppendFormat("const step = [{0}];\n", string.Join(", ", nSteps));
sb.Append(@"
let currActivity = global.get('currActivity') || 1;
let currStep = global.get('currStep') || 0; // for the first execution.
// Increment the counter.
++currStep;
// Check if the task is over.
if (currActivity === 1 + step.length) {
return msg;
}
if (step[currActivity - 1] < currStep) {
++currActivity;
currStep = 1;
}
global.set('currActivity', currActivity);
global.set('currStep', currStep);
return msg;
");
var node = new NRFunctionNode(sb.ToString());
node.Wire(nidSwitchActivity);
node.WriteTo(_writer);
return(node.Id);
}
private void generateParallelFlow(ParallelTiming timing, NRFunctionNode prev, NRJoinFunctionNode next)
{
var svcmap = _activity.ServiceMap;
foreach (var anim in timing.Animations)
{
var service = svcmap.Lookup(anim.ShapeId);
if (null == service)
{
// No available service for the shape.
continue;
}
JObject flowObj;
using (var flow =
anim.Type == AnimationType.Entrance ?
service.ActivationFlow :
service.DeactivationFlow)
using (var flowReader = flow.Reader)
{
flowObj = (JObject)JToken.ReadFrom(flowReader);
}
var meta = (JObject)flowObj["meta"];
var nidIn = (string)meta["in"];
var nidOut = (string)meta["out"];
var topic =
$@"{service.nodeName}-{(anim.Type == AnimationType.Entrance ? "activation" : "deactivation")}";
var nodeTopic = new NRFunctionNode(func: $"msg.topic = '{topic}';return msg;");
nodeTopic.Wire(next.Id);
nodeTopic.WriteTo(_writer);
nidIn = generateCopyOfFlow((JArray)flowObj["flow"], nidIn, nidOut, nodeTopic.Id);
// If this animation effect has a delay, put a delay node.
var nidFirst = nidIn;
if (anim.HasDefiniteDelay && anim.Delay > 0)
{
var nodeDelay = new NRDelayNode(anim.Delay);
nodeDelay.Wire(nidIn);
nodeDelay.WriteTo(_writer);
nidFirst = nodeDelay.Id;
}
prev.Wire(nidFirst);
next.AddTopic(topic);
}
prev.WriteTo(_writer);
}
private string generateStepFlow(StepTiming timing, string nidReturn)
{
var firstNode = new NRFunctionNode();
var prev = firstNode;
foreach (var parTiming in timing.ParallelTimings)
{
var next = new NRJoinFunctionNode();
// prev will be written in this invocation.
generateParallelFlow(parTiming, prev, next);
prev = next;
}
// For understandability.
var last = prev;
last.Wire(nidReturn);
last.WriteTo(_writer);
return(firstNode.Id);
}
private string generateHttpResFuncNode(string nidHttpRes, int?currActivity, int?currStep, bool taskFinished)
{
var _currActivity = currActivity?.ToString() ?? @"global.get('currActivity')";
var _currStep = currStep?.ToString() ?? @"global.get('currStep')";
string func = $@"
msg.payload = {{
status: {JsonConvert.SerializeObject(HttpResponseBody.StatusType.Success, Converter)},
curr_activity: {_currActivity},
curr_step: {_currStep},
task_finished: {(taskFinished ? "true" : "false")}
}};
msg.headers = msg.headers || {{}};
msg.headers['Content-Type'] = 'application/json';
return msg;
";
var node = new NRFunctionNode(func);
node.Wire(nidHttpRes);
node.WriteTo(_writer);
return(node.Id);
}
public string generate(string nidHttpResFunc)
{
var returnNode = new NRFunctionNode();
var switchNode = new NRSwitchNode(NRSwitchNode.PropertyType.GLOBAL, property: "currStep",
checkall: false);
var i = 0;
var behavior = _activity.Behavior;
foreach (var stepTiming in behavior.StepTimings)
{
var nidStep = generateStepFlow(stepTiming, returnNode.Id);
var rule = new NRSwitchRule(NRSwitchRule.OperatorType.EQ, (i + 1).ToString(),
NRSwitchRule.ValueType.Num);
switchNode.AddRule(rule);
switchNode.Wire(nidStep, i);
++i;
}
returnNode.Wire(nidHttpResFunc);
returnNode.WriteTo(_writer);
switchNode.WriteTo(_writer);
return(switchNode.Id);
}
