eventsource | EventSource client for Node.js and Browser | Websocket library
kandi X-RAY | eventsource Summary
kandi X-RAY | eventsource Summary
This library is a pure JavaScript implementation of the EventSource client. The API aims to be W3C compatible. You can use it with Node.js or as a browser polyfill for browsers that don't have native EventSource support.
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Top functions reviewed by kandi - BETA
- Format the given value into a string .
- Writable stream .
- Decodes the input string into an array
- Decode input characters .
- ReadableStream state .
- Adds an event listener to the target .
- Pushes buffers to the buffer .
- Format a property .
- Index of the given value in a buffer .
- Destroys the entity .
eventsource Key Features
eventsource Examples and Code Snippets
Community Discussions
Trending Discussions on eventsource
QUESTION
I have a log file from our friends at Microsoft in a very challenging format. The file is as follows:
- File is a .CSV
- Four fields, the fourth contains JSON
- All JSON key pairs are wrapped with two sets of double quotes
I have an export of several of these files, and I want to quickly parse them in Terminal using GREP to find key events.
Sanitized Example:
...ANSWER
Answered 2022-Apr-08 at 14:50Probably not the best, but working
QUESTION
I am using Server Sent Events (SSE) and my code to connect to my SSE backend looks like this:
...ANSWER
Answered 2022-Mar-12 at 00:35The connection occurs after the current Javascript execution has completed. I believe this would be safe to assume for all browsers, though I don't have a definitive reference.
For example, Chrome starts the connection from a timer, which probably ties into the same event loop as, for example, setTimeout
: https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/modules/eventsource/event_source.cc;l=99?q=EventSource&ss=chromium
QUESTION
I'm exposing a simple SSE endpoint using the SseEmitter
Spring API, persisting all the emitters in a ConcurrentHashMap
. The timeout for each emitter is set to 24 hours. Every 10 seconds I'm sending a message to all the clients. Clients are subscribed with native EventSource
implementation, listening for events of particular name.
Unfortunately, I've noticed that every 5 minutes the connection is lost and reestablished again - even though timeout of emitter was explicitly set to 24 hours. Client's part does log it as an error, however on server side there's nothing. The issue occurs on both Tomcat and Jetty. I'd like to keep the session open without any interruptions, so resetting the connection every 5 minutes is unacceptable. Any ideas why this could be happening?
...ANSWER
Answered 2022-Feb-21 at 14:33Alright, seems it was an issue with Stackblitz's service worker. I've just implemented the same client-side solution in Chrome's plain console and the disconnecting is no longer happening.
QUESTION
I would like to implement Event Source feed of _changes
for some documents in publicly readable database in CouchDB. Unfortunately, I get 405 error and:
ANSWER
Answered 2022-Feb-12 at 12:10Solution (inspired by: https://stackoverflow.com/a/50914749/2626200):
QUESTION
I'm new to AWS and working on SQS to trigger a lambda function. The order of the function is, Lambda A and pass queue to SQS, then SQS trigger Lambda B.
When I run Lambda A, I see Lambda B is triggered as I expected. However, when I run Lambda A within 5 minutes after the last run of Lambda A, Lambda B is not triggered. I'm wondering if there is a default time set of "5 minutes" to use SQS triggering Lambda function. If so, how can I change to "0 minute"?
Does anybody have the similar issue before? Thanks,
...ANSWER
Answered 2022-Jan-25 at 04:05Just ensure that you have not set the below setting in SQS. This setting could delay your Lambda function to running after x time.
QUESTION
I'll show below the simplified version of the SSE part of my React project.
For some reason, I am not being able to change the state of a variable inside the EventSource.onmessage function.
...ANSWER
Answered 2022-Jan-14 at 17:20It's a stale enclosure over the variable
state value in the onmessage
callback handler.
You could use a React ref and an useEffect
hook to cache the variable
state value and access the cached value in the onmessage
callback.
Example:
QUESTION
I am trying to create a rule that will trigger everytime AWS Secrets Manager Rotation is succeeded. However the rule was not triggered even though Rotation Succeeded Event is log in Event History.
Here's my event pattern:
...ANSWER
Answered 2022-Jan-06 at 08:53To use AWS API Call via CloudTrail
in EB, you must enable CloudTrial trial:
To record events with a detail-type value of AWS API Call via CloudTrail, a CloudTrail trail with logging enabled is required.
QUESTION
I'm able to create an SQS queue + lambda function and connect them via trigger/subscription.
How can I create a topic filter via CDK?
I'm able to create the topic, lambda, and trigger / subscription like so:
...ANSWER
Answered 2021-Dec-15 at 08:12AWS SQS and SNS are different servies. SQS has queues, SNS has topics.
I'm assuming you're indeed talking about SQS. Filtering for SQS queues was impossible until two weeks ago, when this was added.
The support for this feature has not been implemented in CDK yet.
I am not completely sure whether CloudFormation supports this at all at this point, but you can try working with the low-level CfnEventSourceMapping resource, here are the CloudFormation docs for it.
QUESTION
I want to enable DynamoDB streams on my lambda using AWS CDK which I am able to do but I also want to enable the filter criteria on lambda
But I am getting this error:
Invalid filter pattern definition. (Service: AWSLambda; Status Code: 400; Error Code: InvalidParameterValueException
This is the event I am getting from DynamoDB streams:
...ANSWER
Answered 2021-Dec-16 at 09:41Here's the DynamoDB streams filter Pattern
syntax for new records with a channel
of email
:
QUESTION
I'm trying to authenticate via graph api to AD with Azure.Identity UsernamePasswordCredential but whenever I initialise the credential ctor, it throws the following exception:
...ANSWER
Answered 2021-Oct-05 at 11:07I had a similar issue with Azure.Storage.Blobs getting the exception
System.TypeInitializationException: The type initializer for 'Azure.Core.Pipeline.LoggingPolicy' threw an exception. ---> System.TypeInitializationException: The type initializer for 'Azure.Core.Diagnostics.AzureCoreEventSource' threw an exception. ---> System.NotImplementedException: The method or operation is not implemented.
I solved it by installing Azure.Core. I hope it might be useful to you.
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