newsfeed | Demo : implementing a Twitter-like news feed using Apache
kandi X-RAY | newsfeed Summary
kandi X-RAY | newsfeed Summary
This is an experimental sample project for [Samza] demonstrating how to implement a Twitter-like real-time news feed. It uses an asymmetric follower model, where each user sees the messages posted by all users they are following. Each time someone follows someone, that’s a follow event. Each time someone posts a message, that’s a message event. If you don’t have real data, this project includes Samza jobs for generating a random social graph and random messages, respectively. The fan-out job uses Samza’s [state management] facilities to store the list of followers for each user. Every time that user posts a message, the fan-out job makes a copy of that message for each follower, and sends it to the follower on a separate deliveries stream. A downstream job then groups together all the messages that need to be delivered to the same user (called a home timeline, again implemented using Samza state).
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Top functions reviewed by kandi - BETA
- Processes incoming messages
- Stuff out all followers of a given sender
- Process a message event
- Process a follow events event
- Sends a random event window
- Get current date time
- Generates a random user
- Sends a window of news
- Process an incoming message
- Initialize social - graph
- Initialize home - timer
newsfeed Key Features
newsfeed Examples and Code Snippets
Lines of Code : 15
License : No License
Copypublic static void main(String[] args){
Newsfeed sampleFeed = new Newsfeed();
System.out.println("The top topic is "+ sampleFeed.getTopTopic());
sampleFeed.viewTopic(1);
sampleFeed.viewTopic(1);
sampleFeed.viewTopic(3);
public static void main(String[] args){
String[] robotArticles = {"Oil News", "Innovative Motors", "Humans: Exterminate Or Not?", "Organic Eye Implants", "Path Finding in an Unknown World"};
int[] robotViewers = {87, 32, 13, 11, 7};
doubl Community Discussions
Trending Discussions on newsfeed
QUESTION
I'm getting the following error while trying to make a get request to the NewsApi.org api. Everything seems to be correct according to their documentation, and my setup is basically the same as a lot of tutorials and some come samples I found on github.
...ANSWER
Answered 2021-Jun-01 at 14:01You're running an older version of Retrofit without coroutine support.
To enable support for suspend functions, upgrade Retrofit to version 2.6.0 or higher.
QUESTION
I'm fetching news from a news api with sample response as below. When i try to accesses the articles the line data['articles'] generates following error-
Element implicitly has an 'any' type because expression of type '"articles"' can't be used to index type 'Object'. Property 'articles' does not exist on type 'Object'.
...ANSWER
Answered 2021-May-24 at 12:36Your http.get is by default returning an Object type. You should typecast it. For now any would work but I suggest creating an interface specific for your type:
QUESTION
This is different to creating a Flutter UI using a Chrome Extension. That is indeed possible and able to confirmed on the first page of search engine results.
I am wondering whether a Chrome Extension could modify a website built with Flutter for the following use case:
This Flutter Web App has a newsfeed, and I wish to write a Chrome Extension which would to remove elements/widgets which contain text/keywords that I am not interested in seeing.
Basically is it possible for a Chrome Extension to Add/Remove Widgets discriminating by text at Runtime in a Flutter Web App?
...ANSWER
Answered 2021-May-08 at 04:35Short answer: no. Long answer: with a lot of time and work it's possible, but is probably not worth doing and shouldn't be considered a feasible use case.
For a typical html/css/js app, web extensions using js can easily simply modify the html and css of the web page, instantly removing elements.
For a Flutter Web application, all of the dart code is compiled to js, and this is used to draw to a single HTML element on the page. So the js file must be modified as opposed to the html or css.
The fact that the dart code is compiled to js, means that it should technically still be able to be modified on the client side with a Chrome extension. The Chrome extension could perhaps use chrome.scripting to copy and inject a modifed js file or chrome.declarativeWebRequest to replace the downloaded js file with the modified one.
Finding which js to modify might be difficult, but if the source map is available it could be easier.
Modding a Flutter Application with a Chrome extension is somewhere inbetween:
- modding a video game to include an extra menu or some helpful UI or modified assets or character behaviour in game (although without memory injection as opposed to modifying a unity web app or unity or unreal in general)
- using a web extension to modify a typical web app.
Overall, modifying a Flutter Web App by using a Chrome Extension (or any means really other than working with the developers of the web app) would be quite difficult and may not be worth the effort.
QUESTION
I am following this tutorial https://www.youtube.com/watch?v=Xd0J18isFEQ for my app which is a simple app that shows a list of values on the homescreen + then has a detail view for each row
I have implemented a router to dictate the routing for my app as below:
...ANSWER
Answered 2021-May-07 at 19:00navigate, as written, wants to take one argument, but you're sending it both an HStack and a VStack.
@ViewBuilder can solve this for you, which is an annotation (used often in SwiftUI, especially in the built-in components) that lets the view have/return multiple root-level elements:
QUESTION
I appreciate this question might be asked a lot and I've seen/tried many answers but I can't find a solution that doesn't involve conventional arrays. I have a data set with the following structure and example data:
...ANSWER
Answered 2021-May-05 at 04:35Ok so I figured it out, I guess I was just calling the onAppear too late and should have been called inside the foreach. I had to change the dataModel to make Result and Fields both equatable and then you can do the following:
QUESTION
I have 3 model User, Follow, and Post
and these relations are like:
User model:
ANSWER
Answered 2021-Apr-27 at 15:11 Post::where(function ($query) {
//generating followers and own user_id array
$followers = Follow::where('user_id', Auth::user()->id)->get();
$followers_and_me = [];
array_push($followers_and_me, Auth::user()->id);
foreach ($followers as $item) {
array_push($followers_and_me, $item->follow_id);
}
//query for specific posts
for ($i =0; $iorWhere('user_id', $followers_and_me[$i]);
}
})->orderBy('id', 'desc')->paginate(5);
QUESTION
So, I don't really know how to write JS, I am developing a mobile app in Flutter, and I would be grateful for some help and clarifications regarding Future/Promises in JS.
I got a collection of posts for each user, and I want to create an .onCreate function which when a user posts a new post (a new document is created inside the 'posts/userId/user_posts' collection), then it gets all the user's followers (from a collection 'user_followers/userUid') and for each follower, it writes the postUid and postOwnerUid to that follower's newsFeed collection ('user_news_feed/followerId').
This is what I got right now, but I am walking blind, since I really don't know JS and I don't know how can I await a write function while inside a get function.
And how do I prevent Cloud Timeouts? If for instance the user has 1000 followers, how can I prevent Firebase from shutting down my function and making sure all the followers are notified?
...ANSWER
Answered 2021-Apr-20 at 11:12As explained in the doc, in a background Cloud Function like an onCreate() for Firestore, you need to return a Promise when all the asynchronous work is completed. So in your case, one possibility is to use Promise.all() because you don't know upfront how many documents are in the followers subcollection. Since Promise.all() returns a single Promise you can include it in the Promise chain that you need to return in the Cloud Function.
QUESTION
I'm working on a Like button. It's working just fine unless user refresh the page. When page is not refreshed the like button itself change the style and add 1 to the like count if user click on it. But when the page is refreshed the like button remain the like count and the previous style then add 1 to the like count and change to the new style if user click on it. That's the problem.
The like button looks like this:
Here is the Javascript code:
...ANSWER
Answered 2021-Mar-20 at 23:27As this is probably your answer:
In your screenshot, you have the yellow thumb in the tool bar, is this what you want to be selected/highlighted when they page refresh? To show they have already liked it?
Assuming this is the case, when you run the code to draw that button, you need to get a list of users who have like it, and compare to the current user, and then if current user is in that list, add the "selected" class (or whatever you do on click initially) so the button looks selected.
I am not a PHP developer, but in pseudo code would be something like:
QUESTION
I am currently working with Accessing json using php in wordpress. For displaying like button I am using the shortcode echo do_shortcode('[likebtn]'); inside the loop,but unfortunately when i click one like buttons all the like buttons are liked.
...ANSWER
Answered 2021-Mar-17 at 07:25Please make sure to post as much details when you post a question. I believe you are using the plugin named LikeBtn. If so, as per the documentation, it talks about a parameter called identifier :
Button
identifierparameter is used for statistics analysis. Ifidentifierparameter is not specified, post ID is used.If specifying custom
identifieryou will see button identifier in statistics and most liked content widget instead of post title. You also will be unable to sort posts by likes. Make sure to specify a unique identifier for each like button using identifier parameter, otherwise all the buttons will reflect the same number of likes.
So am guessing that your code is run on a Page or Post, which makes the plugin auto fetch that Page/Post's id as identifier since you are not explicitly passing it to the shortcode. Hence, all like buttons are getting updated at once when you click one of it!
What you have to do is, pass a unique id as identifier to that shortcode (in that loop). I think you can pass $pr->ClusterID as the identifier, but I don't know whether it's a unique id or not. If not, you have to brainstorm for what to be passed as identifier which would be unique (no repetitions on that same Page/Post)
EDIT
So, you can change your echo line to something like this:
QUESTION
Parsed JSON. Now I'm trying to display all this in a view.
But getting an error
...ANSWER
Answered 2021-Mar-10 at 11:17Perform the json decoding in a class that conforms to ObservableObject and assign the result of the decoding to a @Published property
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Install newsfeed
You can use newsfeed like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the newsfeed component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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