event-bus | EventBus is a simple JavaScript library for managing events | Pub Sub library
kandi X-RAY | event-bus Summary
kandi X-RAY | event-bus Summary
EventBus is a simple JavaScript library for managing events. It can be used in both NodeJS and the browser. The main driver for this library is enabling frontend microservices to interact with each other, allowing certain tasks to be deferred to another service, thus making our frontend microservices truly micro.
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QUESTION
I created a simple ionic app that allows users to book services. The user would select a service category, choose a service(s) then navigate to a form to complete the booking.
I've setup an event bus using tiny emitter
since the project uses vue 3 with the composition api. The data emits as expected however when navigating to the booking form the listener is not triggered.
The expected behaviour is to get the selected service(s) and send it along with the rest of the booking info to a REST api.
eventBus.js
...ANSWER
Answered 2021-May-25 at 14:27This may be a framework level bug. I've spoken to the Ionic team via twitter and was advised to use query params instead so that's the route I took.
QUESTION
I want to send to CloudWatch logs ALL the events sent to a custom event bus.
I created the custom event bus: my-event-bus
I created the CloudWatch log group
I created the event bus policy so everyone within my account can put an event into my-event-bus
I created a rule for that custom bus
This is the rule:
...ANSWER
Answered 2021-May-21 at 00:20aws.events
belongs to AWS, not to you, thus you can't define it as source of your events. Only AWS can do it.
You need to use your own custom name for the source of your events, e.g. myapp.events
.
QUESTION
I want to configure vertx at k8s by using hazelcast-kubernetes in Quarkus.
I need configure event-bus like this:
...ANSWER
Answered 2021-Mar-29 at 08:15I don't believe you can configure VertxOptions
from code.
You could put a cluster.xml
Hazelcast configuration file in the classpath instead.
Note that the Vert.x cluster managers are not supported in Quarkus yet. You can make them work in JVM mode (see this attempt with Infinispan) but not in native mode.
QUESTION
So, I'm trying to automate docker build and push process and as well as the kubectl apply deployment process and for this, I have created a skaffold config file in main folder as follows:
...ANSWER
Answered 2021-Mar-19 at 14:03Artifacts use context:
to reference the source locations.
I think you must be using an old version of Skaffold. Newer versions of Skaffold provide more detail:
QUESTION
Hello I have a command bus, a query bus, which basically has a keypair with the name of the command or query and the handler and then I execute the command that should publish my event. But I have some doubts about how I could do my event-bus. is the command-bus part of an event-bus? how could I do an event-bus with the handlers
command-bus:
...ANSWER
Answered 2021-Mar-24 at 13:47I see there's some confusion between the various Buses and the Event Store. Before attempting to implement an Event Bus, you need to answer one important question that lies at the foundation of any Event Sourcing implementation:
- How to preserve the Event Store as the Single Source of Truth?
That is, your Event Store contains the complete state of the domain. This also means that the consumers of the Event Bus (whatever it ends up being - a message queue, a streaming platform, Redis, etc.) should only get the events that are persisted. Therefore, the goals become:
- Only deliver events on the Bus that are persisted to the Store (so if you get an error writing to the Store, or maybe a Concurrency Exception, do not deliver via bus!)
- Deliver all events to all interested consumers, without losing any events
These two goals intuitively translate to "I want atomic commit between the Event Store and the Event Bus". This is simplest to achieve when they're the same thing!
So, instead of thinking about how to connect an "Event Bus" to command handlers and send events back and forth, think about how to retrieve already persisted events from the Event Store and subscribe to that. This also removes any dependency between command handlers and event subscribers - they live on different sides of the Event Store (writer vs. reader), and could be in different processes, on different machines.
QUESTION
I would like to build a generic event-bus in c++, which allows messages of arbitrary type to be passed into it, and which allows registering of handlers based on the type of the message. IE I would like to expose a method like the following:
...ANSWER
Answered 2021-Mar-15 at 03:09Extrapolating from the similar answers I put in the comments, this works for me:
QUESTION
Original Requirement:
Create a route/path on AWS Api Gateway which connects API Gateway directly to AWS Event Bridge (Cloudwatch Events) and puts/pushes event on an event bus of it.
Was able to create it and executes just fine when done from AWS Console.
Actual Problem:
When writing the AWS Cloudformation script for this API Gateway, it looks like this:
...ANSWER
Answered 2021-Feb-19 at 13:06Based on the comments,
The URI should be something like below for events:
arn:aws:apigateway:${AWS::Region}:events:action/PutEvents
QUESTION
Here is the sender verticle I have set multicast enabled and set the public host to my machines ip address
...ANSWER
Answered 2021-Jan-11 at 13:20In Vert.x 3, the cluster host and cluster public host default to localhost
.
If you only change the cluster public host in VertxOptions
, Vert.x will bind EventBus transport servers to localhost
while telling other nodes to connect to the public host.
This kind of configuration is needed when running Vert.x on some cloud providers, but in most cases you only need to set the cluster host (and then the public host will default to its value):
QUESTION
I'm using ASPNET Core and I rely heavily on Dependency Injection.
I want my event consumers to store data from messages to the database (database is a service), but services aren't yet resolved when I configure consumers via:
...ANSWER
Answered 2020-Nov-28 at 15:30First, if you have a consumer with dependencies and are using a container, I'd suggest following the documentation – particularly at the bottom where it shows how to configure consumers on a receive endpoint from the container.
In your case, this would look like:
QUESTION
Out of the blue, emitter stopped working:
event-bus.js
...ANSWER
Answered 2020-Oct-30 at 11:53According to this You should use kebab-case
format to name your custom events :
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