angelo | Sinatra-like DSL for Reel that supports WebSockets and SSE | Websocket library
kandi X-RAY | angelo Summary
kandi X-RAY | angelo Summary
Just like Sinatra, Angelo gives you an expressive DSL for creating web applications. There are some notable differences, but the basics remain the same: you can either create a "classic" application by requiring angelo/main and using the DSL at the top level of your script, or a "modular" application by requiring angelo, subclassing Angelo::Base, and calling .run! on that class for the service to start. In addition, and perhaps more importantly, Angelo is built on Reel, which is built on Celluloid::IO and gives you a reactor with evented IO in Ruby!.
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Top functions reviewed by kandi - BETA
- Render a template .
- Initializes the request .
- Sends a file .
- Sets the filters for the given params .
- Returns error for error
- Iterates over each socket
- Dispatch to the request
- Removes a client from the socket .
- Parses requests .
- Parses a string encoded value .
angelo Key Features
angelo Examples and Code Snippets
Community Discussions
Trending Discussions on angelo
QUESTION
i am just learning about this combo of Optional chain and Nullish coalescing.
Here is the object
ANSWER
Answered 2021-Apr-13 at 18:02Perhaps return a value from the function otherwise it has an undefined value:
QUESTION
I have been trying to animate route transitions using framer-motion but can't wrap my head around the exit animations. Entry animations work as they should.
I want the component to slide in from the left and slide to the right when route changes.
I have
- wrapped the Switch component using AnimatedPresence from framer-motion and used a location object and taken its pathname as its key.
- Wrapped all of this using BrowserRouter
- Ensured I have used motion component from framer-motion at the root element of each of my functional components
App.js
...ANSWER
Answered 2021-Mar-26 at 22:54QUESTION
I have an R string column containing education information (university + degree). I would like to extract the degree and creating two categorial variables to indicate undergraduate or graduate degree (undergrad.dummy
and grad.dummy
).
ANSWER
Answered 2021-Feb-23 at 00:34Keep the pattern vectors in a list
, loop over the list
with map
(from purrr
), paste
them into a single string by collapse
ing with |
(OR
) use that in pattern
within str_detect
, returns a logical vector, coerce it to binary (as.integer
or +
), rename the columns from map_dfc
and bind those columns to original dataset
QUESTION
Using the w3schools.com SQL tutorial Northwind database, I'm trying to display the category that has the most products shipped. Additionally, I want to display the net income from all sales in that category. I can't figure out how to take the category with the most products shipped, and use the amount of products shipped to calculate the net income of that category. This is because there are many different products that have the same CategoryID but different prices.
...ANSWER
Answered 2021-Jan-25 at 07:24So first of all you get the income for each product and category and then based on that you find total income for that category and you do this with the help of subquery, then you join this resultant table with the category table and with the help of group by you find the product count and total income for each category, below is the sql query for more indepth understanding
QUESTION
It seems to me that using getters and setters for an object inside a class has no point to it. As I understand it, get/set is useful because it prevents someone outside the class changing something that shouldn't be changed or changing it to something it shouldn't be. However it seems pointless for objects. For example, I have a person with an address, I want to prevent editing the address, you can only view it:
...ANSWER
Answered 2021-Jan-18 at 04:53Consider this class.
QUESTION
I have a long list of events that are in a pandas dataframe with the event start and end dates for each event. How can I find the "nearest" event in each city & venue combination using pandas.groupby()
?
Nearest event could be an event in the past, if no new upcoming events. i.e latest event in the dataframe in this case, which happened to be in the past. If there are multiple upcoming events, the one closest in the future will be considered as nearest event.
I tried groupby.agg("max")
as below but that will give the event that is farthest in the future always:
ANSWER
Answered 2021-Jan-13 at 03:24IIUC,
QUESTION
I was looking to include a responsive card template into my project and used one of the templates from CodePen to do this. However, when I copied the code from CodePen to my own platform, The card would not expand when I click on "click on expand" like it is unresponsive. But over here, the code runs fine, but not on the IDE I am using.
Where I got the whole code from initially: https://codepen.io/ryanparag/pen/EOBdOK
The HTML/CSS of the card:
...ANSWER
Answered 2021-Jan-09 at 23:37You're referencing javascript with the wrong tag.
Javascript should be referenced with a
It worked here and in codepen site, because both are not using a reference to the javascript, they are "creating one".
EDIT: To avoid the following error in the repl.it site:
QUESTION
I'm trying to run a dynamic query with a model as below:
...ANSWER
Answered 2020-Nov-12 at 04:00It is possible if you use .Equals()
, which will first check to see if the types are identical and, if they are not, will perform a cast to the run-time type.
QUESTION
I'm pretty newbie in kubernetes. I'm wondering what is the best production deployment scenario in kubernetes environments.
In the old school I was used to put in DMZ layer just the Web Server (e.g. Nginx or Apache) and in other layer (let's call it AS Layer). In this way just the web server are on DMZ and a malicious attack can be done just only on the Web Server VMs.
As far as I know this approach is no more needed in K8S deployments; this because K8S handles the network, pods and traffic by itself. So I was thinking about the most sure deployment scenario.
Let's suppose to have 3 worker nodes and 3 master nodes. I actually deploy my solution like in this picture:
As you can see I put in DMZ layer just the worker nodes; master nodes are in the AS layer.
What I'm wondering is: is this deployment "sure enough". What I'm worried about is that is there is a malicious attack, the hacker will access to the worker node that is much different from a Web Server (where he can find just static files)
Another scenario, in "old style school" would be the following one:
In this case in the DMZ i just put Web Server and in the AS layer I put the full K8S cluster. But I don't know if this makes sense and how much feasible it is (every time a new POD/Service is added to the cluster maybe I should configure the Web Servers in DMZ in order to route requests to this new Service)
What do you think about the two approaches? Which one is the "best"?
Thank you
Angelo
...ANSWER
Answered 2020-Nov-10 at 13:08There's multiple ways to deal with this type of scenario in Kubernetes. I'm assuming you are dealing with an on-prem deployment.
- You could have a front-end cluster in the DMZ and an internal cluster inside the corporate firewall. This is the most secure option but it's expensive and time consuming to implement and manage.
- You could create separate nodepools for the DMZ and the internal systems, and implement network policies to restrict the network traffic between them. I'd make sure that the DMZ nodepool isn't the default one, so that deployments need to target the DMZ pool explicitly.
- Use only namespaces and network policies to restrict the traffic between pods running in the DMZ. This should be secure enough in most cases, as pods run in an operating system jail and are only able to access resources allocated to them.
One important thing to keep in mind is that containers within pods should run under a normal user account and never under root, except maybe for init containers.
For more information see: https://kubernetes.io/docs/tasks/administer-cluster/securing-a-cluster/
QUESTION
I'm currently working on a project that uses "twig" for the first time, so I apologize if this is not very clear.
I have developed a custom function that embeds SVG icons on the twig templates, but for this particular project I am graded more for coverage and unit testing than anything else. Because of this I am trying to use phpunit to test if my function works as intended.
In order to do that I believe I must render an instance of the custom function on the test file, and then compare it with the raw SVG file on my directory. But I am having trouble using the render method. I believe because I don't have a twig environment available in the test.
I have looked for something similar here and I have found this previous question: "https://stackoverflow.com/questions/17026405/twig-template-unit-testing?rq=1". The answer to this question recommends using the following:
...ANSWER
Answered 2020-Nov-09 at 19:52TestCase
(phpunit class your test extends) is insufficient. you might have missed that symfony provides an extension called KernelTestCase
which provides a kernel you can get the twig environment from (or WebTestCase
, which also provides a client you can use to navigate your website).
So instead of
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Install angelo
On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.
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