flowa | Service level control flow for Node.js | Reactive Programming library
kandi X-RAY | flowa Summary
kandi X-RAY | flowa Summary
Each flow is a set of tasks. It starts by a compound task which is basically a task that groups a set of single or other compound tasks. Single tasks are either async or sync functions that are executed and called by passing an object called context to allow sharing data between tasks and an optional callback function for async tasks that use callbacks instead of promises. Each compound task's sub tasks are executed by a runner that can be a serial execution (default type) or a parallel execution.
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QUESTION
I want do something like this where the gateway payload is a String and serviceA & serviceB both return lists.
...ANSWER
Answered 2020-Aug-26 at 21:53QUESTION
Went through a few of secondary axis solutions proposed here but didn't get it right. I am trying to plot Elevation on the left y-axis and FlowA & Flowb on the right y-axis. My sample code will do the Elevation plotting however, struggling to get the FlowA & FlowB variables on the secondary axis. Any help would be appreciated.
ANSWER
Answered 2020-Aug-22 at 17:40The solution in here works just fine for me. But I would like to add some adjustments because the code will be slightly different for your data. According to the solution, we will use 3 geom objects that represent the elevation, FlowA, and FlowB. We will also make the secondary axis for FlowA and FlowB.
QUESTION
Let's say we have a graph that looks like this:
...ANSWER
Answered 2019-May-02 at 07:48Returning a None, will not really create a new object… Wraping to a Some (not to an Option which will do the nullcheck) can make better performance too. I think you can’t really bypass without a null element, but if you have a nonValid/null in your return type that can be used as None too. (For ex if they are objects with long id, you can create an invalid element with the id=-1 element and filter it out.) I think there will be no silver bullet here.
BUT: I think this is not a problem, you will not lost significant performance, your code will have probably other mutch larger bottlenecks, so let it go :D
(Reposted my answer from the lightbend discuss)
QUESTION
I am trying to install terminalizer on OSX using npm but I get error with and without using sudo. Not sure how I can proceed with fixing it and installing it successfully:
ANSWER
Answered 2018-Dec-22 at 21:57The following installed the Terminalizer (adding the --unsafe-perm flag) (please pitch in if there's a better solution. I am no expert in npm):
QUESTION
Is it possible to initiate a flow session from a flow that is annoted with InitiatedBy to a flow which is also annoted with InitiatedBy?
For example:
@InitiatingFlow
Class FlowA
@InitiatedBy(FlowA.class)
Class FlowB
@InitiatedBy(FlowB.class)
Class FlowC
is it possible to achieve sequence of flow session like: A->B->C ?
...ANSWER
Answered 2018-Nov-26 at 11:47Yes, this is possible, as follows:
QUESTION
Consider the following case: node A builds and signs a TX which is sent to B for signing.
...ANSWER
Answered 2018-Mar-27 at 21:02On receiving a transaction, you will be able to interrogate all the inputs, outputs and commands. Typically, the interrogation would happen inside the contracts verify method.
Yes, if anything were to change the root ID would indeed change. Note that it's not possible to change anything within a transaction once it has been signed.
Other things you could look for is the presence of the transaction being notarised.
It depends on what your contract needs to do, but yes, you would check which commands are present within a transaction e.g. in the issuance of a security, you might check that only one issue command is present.
You can also check the commands have received the required counterparty signatures.
If you would like to discuss in person, feel free to join one of office hour sessions - https://www.corda.net/support/technical-office-hours/
QUESTION
Newbie question about Ajax and promises.
I have two JS functions, flowA() and flowB(), which both call an Ajax fetch function, defined as follows:
ANSWER
Answered 2017-Dec-10 at 17:57function ajaxGetQuestions() {
return $.ajax( { // this returns a promise
// DB call..
}).done({
// Build a DOM structure with results...
});
}
QUESTION
I've been trying to figure this out for a while and I'm stuck. My approach seems inefficient and incorrect.
What I am doing is, generating my form values using *ngFor, I am dynamically creating form controls for Answer's as well as questions.
The issue is that, on Submit I need to have the answers associated with the questions, so I can pass to the next screen. The questions generated from the *ngFor are sorted by checkbox selected, if the selected = true; then bubble the question to the top.
The issue is that on submit, pvqForm passed the formControls, I need to associate the answer with the question it was associated with. FormControls have a prefix {{i}} --> index, however, this index is after the sort. So Index 19 may not be question_id = '19'.
The Object I am trying to achieve onSubmit is:
...ANSWER
Answered 2017-Jul-22 at 12:41You can remove a lot of your duplication using Form Arrays.
These can be created using the Form Builder
I have also grouped question and answers together.
QUESTION
I'm having issues getting always the last value from combination obtained with a combineLatest operator.
I have 2 hot flowables (a, b) generating events at high frequency (an event every 100ms each):
...ANSWER
Answered 2017-Jul-11 at 10:11You can apply onBackpressureLatest on both flowA and flowB and use the overload of combineLatest which let's you specify the prefetch amount.
QUESTION
I have created a graph to paralellise two flows with the same input. The flows produce Future[Option[Entity]]. If flowA fails I would like to return a Future[None] but the recover does not seem to be called
...ANSWER
Answered 2017-Jan-25 at 08:56The recover combinator comes into play when an exception has been propagated from upstream.
A Future.failed is not an exception, but a valid element.
You would need something like
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