How Function as a Service OR Software as a Service can be tested thoroughly.
What is the nitty gritty involved in testing FaaS in and out ? Below are some of the pointers that come to my mind but would like to expand on this list.
Automated Tests
Negative Tests
Security Tests
Checking access restrictions
Scalability
Above items are focused on activities which can be performed locally or in testing environments but would like to consider scenarios if it should be or can be tested after deployment to Cloud.
How can Kubernetes pods be tested for scalability ?
There are a few different ways that you can test FaaS / SaaS in and out of the cloud tools. One way is to use a tool like SoapUI or Postman to make calls to the API and check the responses. Another way is to use a tool like Selenium to automate the UI and check the results.
Related
I am working on a small project trying to control some steps of a workflow in a web application using MS teams. My idea is to use R as an intermediate step between the application (which has a number of API endpoints I can call from R) and Microsoft Teams chats (or channels). Users would then use a set of keywords in the chat to lead to an action in the application. For example they might use "publish ABC-123" in a specific chat and this would lead to the application publishing document ABC-123 somewhere via R which would orchestrate everything.
I have a couple of ideas but there are drawbacks:
I thought originally about using microsoft365r. We have an app registered in Microsoft 365 which would allow us to monitor a specific chat for messages that trigger actions in R. The problem with this approach is that we would need to have the R code running and checking MS Teams every couple of minutes. It is certainly doable, but not very elegant.
Another option could be setting up a plumber API and an outgoing webhook in MS Teams. This seems like the ideal way to do it, but webhooks in MS Teams require https and as far as I understand this is not straightforward to implement in plumber.
I would appreciate any ideas on how to do this. I know I am not very specific, but mostly looking for high level pointers of what I could look at. Many thanks!
You actually have a bunch of options for this:
Create a bot directly in code, e.g. per https://learn.microsoft.com/en-us/microsoftteams/platform/bots/what-are-bots . There's a bit of a learning curve of course, and it depends on whether you have development skills outside of r, e.g. python, .net, whatever. The bot would then call your code as needed.
Create a no-code bot using Power Virtual Agents. This is the equivalent, for bots, of Power Apps or Power Automate, if you're familiar with those.
Create a workflow, either in Power Automate or Azure Logic Apps, that can listen for and respond to messages. This is kind of similar to a bot, but with finer scope (and therefore less capability). If you want it to call out to your app, e.g. to an endpoint, you'd need a Premium Connecter for Power Automate, or you can use an Azure Logic App directly (uses the same engine, but the pricing model is different for these and Power Automate is a little easier to work with.
Outgoing webhook - you can implement these as standalone, but actually from your use case it sounds like a bot would be better anyway, and it's kind of what you need to build to make this kind of webhook work properly anyway.
I was surfing on internet for solutions and tools related to the API Layer and I find a company (maybe a startup) that is developing an ecosystem that allow to "virtualize the API Layer" (at the moment only in .net Core). It seems they allow to don't code the Api layer, don't write documentation of endpoints, don't writeE2E test (automatically inferred), change behaviour of endpoints at runtime and reuse the entire stack in another project. Do you think is it really possible something like this and useful in the world of API development? thanks
If I understand the question, your wondering about setting up an API layer with just the endpoints, but the endpoints have empty logic in them, right?
If so, then yes its possible to do this with a variety of tools. One tool I use is Postman, which allows you to setup a "skeleton" API you can call for design/testing purposes.
It allows standing up a mock server that hosts your skeleton API, in which any consumer can hook into.
Most performance testing tools seem to be geared towards load testing web applications.
How do I load test a CorDapp?
Do I have to write an RPC Client to trigger flows or is there a Corda tool to enable this?
Looks like you need to wrap flow with an REST API in order to use state of the art tools. This also enables quick tests with Postman and alike.
In other words, what part of Google Cloud Endpoints is not in the SDK?
I've seen several people saying that simply running their application elsewhere doesn't work. For exaple, see: https://groups.google.com/forum/#!searchin/appscale_community/endpoints/appscale_community/BFagV00RUcU/taaAoV5mxNEJ
What part of Google Cloud Endpoints is not in the SDK? Are there any initiatives going to try to implement that?
Endpoints has two components. The first is the SDK, and the second is the API proxy. In theory, both could work on other platforms, but the reality is that you would need to really understand the finer details of the interaction between the two to execute it. You could also in theory try to use the dev server servlets to run on other platforms. I make no guarantees about the robustness of either solution.
I am pretty new to stuff related to server and backend services and I want to develop a mobile app with a backend part. I want this backend to serve an ios app, an android app as well as a website.
My concerns today are how does the frontend part communicate with the backend part :
does it work the same way a website works ? (Http request to the server ?)
how does happen the exchange of datas between the frontend and the backend ?
which are the common solutions to my problem ?
is there an efficient way to desing this backend to serve mobile apps as well as a website ?
is parse (https://parse.com/) a good starting point ?
Thanks
Looking at your questions in turn:
does it work the same way a website works ? (Http request to the server ?)
There are many options, but probably the most common, or fashionable, at the moment is to use a RESTFUL interface:
http://en.wikipedia.org/wiki/Representational_state_transfer
Previously, a SOAP based web service might have been the most common choice:
http://en.wikipedia.org/wiki/SOAP
See here for some discussion on why you might use REST rather than the SOAP now:
Why would one use REST instead of SOAP based services?
how does happen the exchange of datas between the frontend and the backend ?
Assuming REST, HTTP is used to transport messages and application data is typically included in XML or JSON forms
which are the common solutions to my problem ?
I think this is covered by the other parts of the question/answer.
is there an efficient way to desing this backend to serve mobile apps as well as a website ?
Thats very dependent on your particular server application, especially its size and architecture. If the server application is broken down into components or parts, and the parts that generate the 'views' or the 'HTML' pages for the web app are distinct and well separated from the 'backend' parts of your server application, AND your application is of a type that the functionality is largely the same whether the end user is using a web site or a mobile and it is just the way the view are generated for the different devices that differs, then an efficient design would be one that keeps as much of the backend common as possible. If the use of the application is very different when used by a mobile client this may not make sense. More generally, an efficient design would keep as much functionality as possible common between the Mobile and Web applications.
It would definitely be worth becoming familiar with the 'Model View Controller' architectural pattern as most of the server side frameworks, as well as many of the Javascript Web client frameworks and even the iOS and (to a lesser extent) Android frameworks use these concepts:
http://en.wikipedia.org/wiki/Model–view–controller
One important considerations whether you need 'push' or notification like functionality on your mobile app. If so you may want to look at some of the common solutions to understand if they meet your needs - probably easiest to start with Apple and Google's offerings to get an understanding, but there are lots of other solutions available also:
https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Chapters/ApplePushService.html
http://developer.android.com/google/gcm/index.html
is parse (https://parse.com/) a good starting point ?
I am not familiar with this service but you might be better looking at a simple REST based approach first and see if it meets your needs.
To answer your question
is parse (https://parse.com/) a good starting point ?
Yes it is.
But I would recommend you to read well on topics such as
REST services
RESTful services vs SOAP - a good article
REST/JSON vs REST/JSON
Services such as parse are called Mobile Backend as a Service (MBaaS).They are ideal to quickly create web services for mobile developers who have little experience with backend development.
A quick search on google on 'MBaaS' will return many services similar to parse and most offer free developer accounts. (With a certain Number of free API calls per second/app)
I have used Apigee similarly & the open source equivalent is Usergrid.
These services will provide a GUI for the developer to create & deploy services and the services are immediately available.
Separate test & production end points will be available.
In addition to basic CRUD operations, these services will also enable easy social network integration, caching & analytics (Depends on service provider)
Features such as security, scalability are built in by the MBaaS provider(Like Parse).