front-end | semantic analysis for the Cypher Query Language | Parser library
kandi X-RAY | front-end Summary
kandi X-RAY | front-end Summary
Parsing, AST and semantic analysis for the Cypher Query Language
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QUESTION
I'm working on a hobby project. The project is basically an integrable live support service. To describe my questions easily, I will call my service service.com
and call the website that uses my service website.com
. I'm thinking on implementing session management to restore disconnected visitors chat. To do that I'm planning to use cookie based session management. If owner of the website.com
wants to use my service I will provide them a JavaScript file which will inject some HTML on the body, style tags on head and implement interaction. All the website.com
's have to do will be importing that JS file and calling a function defined by that JS file. To set 3rd party cookies on that website.com
from my service.com
I will use this request/response. When website.com
requests my JS file from service.com
, my service will respond the request with the JS file along with a cookie to manage visitor's sessions. This way service.com
will set 3rd party on website.com
's visitors.
1st Question: Could this stage of setting cookie on website.com
's visitor done on the front-end with that requested JS file or locally (from the website.com
's web server) requested JS file? Would that still be a 3rd party cookie since it would be set on the front-end of the website.com
?
2nd Questios: My other question is about cookie consents. Can a website that sets 3rd party cookies (e.g service.com
) on some other website (e.g website.com
) ask to allow their cookies on that website.com
? In other words, can I ask website.com
's visitors to allow only 3rd party cookies that are set by service.com
with the JS file I serve/give to website.com
? Would that be legal?
3rd Question: How do cookie consent banners work behind the scenes? What happens when you accept/deny all of the 3rd party cookies used on a website? Or what happens when you filter and accepy only a few of them? How does the process of allowing/disallowing work? Is there some kind of JavaScript that is triggered when you click that "Accept" button or "Decline" button? You can provide me any resources on this topic.
Thanks!
...ANSWER
Answered 2022-Mar-29 at 23:101st Question It depends on how the cookie is created and stored. If the cookie is storing a user-specific, website-specific session ID and will only ever be used on that website, it can be stored using a 1st party cookie set by the JavaScript you serve to the front-end. If it's to be used on other websites (such as a unique user ID for adtech firms) then that would be 3rd party.
2nd Question That's not your responsibility. It is the responsibility of the website provider as a "data controller" (the website owner) to declare their "data providers" (you) to their users and give them a choice whether or not they would like to have their data stored and (potentially) processed.
You can however respect the DoNotTrack
setting the browser provides and you can also implement a workflow which allows your code to await
permission of some sort. By that I mean, you can ensure your code doesn't execute until a function such as cookiePermissionProvided()
is called. That would allow the developer of the site to implement your code into their site's cookie consent callback effectively.
3rd Question You may or may not be surprised to here this, but some of them do absolutely diddly squat.
However, the ones that actually work usually use some kind of promise or callback functionality such as ...
QUESTION
Google recently sent me an email with the following:
One or more of your web applications uses the legacy Google Sign-In JavaScript library. Please migrate your project(s) to the new Google Identity Services SDK before March 31, 2023
The project in question uses the Google Drive API alongside the now legacy authentication client.
The table on the migration page (https://developers.google.com/identity/gsi/web/guides/migration) says:
Old New Notes JavaScript libraries apis.google.com/js/platform.js accounts.google.com/gsi/client Replace old with new. apis.google.com/js/api.js accounts.google.com/gsi/client Replace old with new.I was currently using gapi
on the front-end to perform authorization which is loaded from apis.google.com/js/api.js
. According to the table I would need to replace it with the new library.
I've tried the following to authenticate and authorize in the same manner that I used to do with gapi:
...ANSWER
Answered 2021-Aug-26 at 19:19In the new Gooogle Identity Services, the authentication moment and the authorization moment are separated. This means, GIS provides different APIs for websites to call on these two different moments. You cannot combine them together in one API call (and UX flow) any more.
In the authenction moment, users just sign in or sign up into your website (by leveraging the information shared by Google). The only decision users need to make is whether they want to sign in (or sign-up). No authorization-related decison need to make at this point.
In the authentication moment, users will see consistent One Tap or button UX across all websites (since the same scopes are requested implicitly). Consistence leads to more smoothly UX, which may further lead to more usage. With the consitent and optimized authentication UX (across all websites), users will have a better experience with federated sign-in.
After users sign-in, when you really want to load some data from a Google data service, you can call GIS authorization API to trigger an UX flow to allow end users to grant the permission. That's the authorization moment.
Currently (August 2021), only authentication API has been published. If your website only cares about authentication, you can migrate to GIS now. If you also need the authorization API, you have to wait for further notice.
QUESTION
I have a ratchet WebSocket server, whose entityManager
is initialized from the backend. However, if some changes happen from one of the front-ends since the state of the entityManager
of the WebSocket server is different from the backend, the new changes are not reflected in the data that is served by the WebSocket server.
For this purpose, I wrote some listeners on the backend that listen for changes in these entities in and then send a request to the server like so:
...ANSWER
Answered 2022-Mar-08 at 15:30Doctrine uses the identity map
The websocket server is a daemon and all cleanup tasks are the responsibility of the developer
Use
\Doctrine\ORM\EntityManager::find
with the $lockMode
argument = \Doctrine\DBAL\LockMode::NONE
OR
Call the \Doctrine\ORM\EntityManager::clean
method before \Doctrine\ORM\EntityManager::find
QUESTION
I am using Spring Security along with Spring Authorization Server and experimenting with creating an auth server.
I have a basic flow allowing me to login with the pre-built login page (from a baledung guide - this is the code I'm working off ). I'm assuming this login page form comes from formLogin()
like so:
ANSWER
Answered 2021-Oct-07 at 20:54Re your comnent: "I'm attempting to build an Authorization Server":
Coding your own Authorization Server (AS) or having to build its code yourself is highly inadvisable, since it is easy to get bogged down in plumbing or to make security mistakes.
By all means use Spring OAuth Security in your apps though. It is hard enough to get these working as desired, without taking on extra work.
SUGGESTED APPROACH
Choose a free AS and run it as a Docker Container, then connect to its endpoints from your apps.
If you need to customize logins, use a plugin model, write a small amount of code, then deploy a JAR file or two to the Docker container.
This will get you up and running very quickly. Also, since Spring Security is standards based, you are free to change your mind about providers, and defer decisions on the final one.
EXAMPLE IMPLEMENTATION
Curity, along with other good choices like Keycloak or Ory Hydra are Java based and support plugins:
QUESTION
I am using fetch
in a NodeJS application. Technically, I have a ReactJS front-end calling the NodeJS backend (as a proxy), and then the proxy calls out to backend services on a different domain.
However, from logging errors from consumers (I haven't been able to reproduce this issue myself) I see that a lot of these proxy calls (using fetch
) throw an error that just says Network Request Failed
, which is of no help. Some context:
- This only occurs on a subset of all total calls (lets say 5% of traffic)
- Users that encounter this error can often make the same call again some time later (next couple minutes/hours/days) and it will go through
- From Application Insights, I can see no correlation between browsers, locations, etc
- Calls often return fast, like < 100 ms
- All calls are HTTPS, non are HTTP
- We have a fetch polyfill from
fetch-ponyfill
that will take over iffetch
is not available (Internet Explorer). I did test this package itself and the calls went through fine. I also mentioned that this error does occur on browsers that do supportfetch
, so I don't think this is the error. - Fetch settings for all requests
- Method is set per request, but I've seen it fail on different types (GET, POST, etc)
- Mode is set to 'same-origin'. I thought this was odd, since we were sending a request from one domain to another, but I tried to set it differently and it didn't affect anything. Also, why would some requests work for some, but not for others?
- Body is set per request, based on the data being sent.
- Headers is usually just
Accept
andContent-Type
, both set to JSON.
I have tried researching this topic before, but most posts I found referenced React native applications running on iOS, where you have to set some security permissions in the plist file to allow HTTP requests or something to do with transport security.
I have implement logging specific points for the data in Application Insights, and I can see that fetch()
was called, but then()
was never reached; it went straight to the .catch()
. So it's not even reaching code that parses the request, because apparently no request came back (we then parse the JSON response and call other functions, but like I said, it doesn't even reach this point).
Which is also odd, since the request never comes back, but it fails (often) within 100 ms.
My suspicions:
- Some consumers have some sort of add-on for there browser that is messing with the request. Although, I run with uBlock Origin and HTTPS Everywhere and I have not seen this error. I'm not sure what else could be modifying requests that would cause it to immediately fail.
- The call goes through, which then reaches an Azure Application Gateway, which might fail for some reason (too many connected clients, not enough ports, etc) and returns a response that immediately fails the
fetch
call without running the.then()
on the response.
For #2, I remember I had traced a network call that failed and returned Network Request Failed
: Made it through the proxy -> made it through the Application Gateway -> hit the backend services -> backend services sent a response. I am currently requesting access to backend service logs in order to verify this on some more recent calls (last time I did this, I did it through a screenshare with a backend developer), and hopefully clear up the path back to the client (the ReactJS application). I do remember though that it made it to the backend services successfully.
So I'm honestly not sure what's going on here. Does anyone have any insight?
...ANSWER
Answered 2022-Jan-25 at 15:48Based on your excellent description and detective work, it's clear that the problem is between your Node app and the other domain. The other domain is throwing an error and your proxy has no choice but to say that there's an error on the server. That's why it's always throwing a 500-series error, the Network Request Failed
error that you're seeing.
It's an intermittent problem, so the error is inconsistent. It's a waste of your time to continue to look at the browser because the problem will have been created beyond that, either in your proxy translating that request or on the remote server. You have to find that error.
Here's what I'd do...
Implement brute-force logging in your Node app. You can use Bunyan, or Winston or just require(fs)
and write out to some file when an error occurs. Then look at the results. Only log it out when the response code from the other server is in the 400 or 500 ranges. Log the request object and the response object.
Something like this with Bunyan:
QUESTION
I have a react project which has two pages and each page has its own css file.
1- Page1.jsx -> Page1.css
2- Page2.jsx -> Page2.css
Each css file is only included in its corresponding jsx file. Both css files share similar class name (example: column, image-place, etc.)
The problem is Page1 is affected by Page2 CSS file.
I am not expert in front-end technologies. Any help will be appreciated.
...ANSWER
Answered 2021-Dec-19 at 11:51Are you using create-react-app?
If so, use css-modules instead https://create-react-app.dev/docs/adding-a-css-modules-stylesheet/
CSS Modules allows the scoping of CSS by automatically creating a unique classname
QUESTION
I'm trying to query from a table where the teacherId
is equal to the teacherId
of the person that logs in but I can't pass that teacherId
from the front-end to the back-end.
This is the back end
...ANSWER
Answered 2021-Dec-16 at 21:38You need to use
QUESTION
I have the initial state of tree diagram that I'm building, with collapse animation and custom node design but whatever I try to make the tree vertical instead of horizontal I mess something else (animation not working well, the lines are wrong and other problems).
I'm trying to visualize a merkle tree where a vertical display is more intuitive. unfortunately I dont have strong background in front-end or deep understanding of d3 lib.
Here is the code:
...ANSWER
Answered 2021-Nov-18 at 11:10The three changes below from your code show that the flip from horizontal to vertical orientation is based on the transform
attribute of the nodes during enter and update, and the drawing of the links.
You can see that because the changes put x and y in the normal order, that the natural orientation is vertical - but many examples of D3 trees out there have horizontal orientations.
There's a few other questions that address this e.g. here, here and here. As they are a few years old this post shows a D3 v5 example of the general principle.
Change 1 - note the change flips x and y:
QUESTION
I need to export huge amount of rows to Excel. I am using Laravel-excel. I followed all the suggestions given in documentation for exporting large database.
...ANSWER
Answered 2021-Nov-12 at 08:42Look at your queue's timeout value. From the documentation at https://laravel.com/docs/8.x/queues#job-expirations-and-timeouts :
"The queue:work Artisan command exposes a --timeout option. If a job is processing for longer than the number of seconds specified by the timeout value, the worker processing the job will exit with an error. Typically, the worker will be restarted automatically by a process manager configured on your server."
Jobs involving shorter numbers of rows look to be completing within the timeout value. Longer ones are not - much as with php.ini and max_execution times, if the job takes too long the system worries that it's broken, in some way, and terminates the job.
QUESTION
I have created a RDS cluster with 2 instances using terraform. When I am upgrading the RDS from front-end, it modifies the cluster. But when I do the same using terraform, it destroys the instance.
We tried create_before_destroy, and it gives error.
We tried with ignore_changes=engine but that didn't make any changes.
Is there any way to prevent it?
...ANSWER
Answered 2021-Oct-30 at 13:04Terraform is seeing the engine version change on the instances and is detecting this as an action that forces replacement.
Remove (or ignore changes to) the engine_version
input for the aws_rds_cluster_instance
resources.
AWS RDS upgrades the engine version for cluster instances itself when you upgrade the engine version of the cluster (this is why you can do an in-place upgrade via the AWS console).
By excluding the engine_version
input, Terraform will see no changes made to the aws_rds_cluster_instance
s and will do nothing.
AWS will handle the engine upgrades for the instances internally.
If you decide to ignore changes, use the ignore_changes
argument within a lifecycle
block:
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