Querying json with RESTful API using Azure - json

In brief I have some json files which I would like to have publicly available as databases for anyone to make queries on. The querying should be via a REST API. All this needs to be done using Azure.
What might be the fastest/simplest way of doing this? I have researched things like json-server, Azure's Cosmos DB, and so on, but everything seems to be either not what I'm asking for or way too much.
Any help or pointers in the right direction would be appreciated.
Thanks!

Have you looked into Azure Blob Storage? Each of the blobs is essentially a file that is stored in Azure which you can house Json data.
https://azure.microsoft.com/en-us/services/storage/blobs/
Then you can layer NoDb (https://github.com/cloudscribe/NoDb/blob/master/README.md), or something similar, in a repository on top and expose with Web API. You will need to write a custom storage path resolver to connect to Azure (https://github.com/cloudscribe/cloudscribe.SimpleContent/blob/master/src/cloudscribe.SimpleContent.Storage.NoDb/PostStoragePathResolver.cs). This approach would not scale very well for high throughput applications but could be switched out for EF and a bigger document store (i.e. CosmosDb) later without having to adjust your API layer.

Related

Whats the best way to deploy predefined data via api calls?

I have several json files that represent the payload for different API's(I can map which API to call based on the file name, but other methods could be applied as well),
what is the best practice to populate my data on the application with the help of those json files?
My first though was to use some automation framework(rest assured for example) to accomplish my task, but I think it might be an overkill for my scenario.
p.s. snapshot of DB/query direct to DB is not an option because of the nature of the application.

Is there a way to store images in Azure or AWS without hosting the application on their platforms?

I am currently developing a full-stack web application for the first time. It is a store that needs to give users the ability to upload "books", edit, delete, and manage them. As of now, I have a React front-end, that calls an Express API using Axios that queries a MySQL database. This currently can manage the product details, titles, and simple labels and relations.
However, I now need to store images and .json files dynamically as well. So, I have researched and need to use Azure Storage to store these images and allow access to them by the end-user. I have researched it and the client would like to use Azure storage as well.
I have gotten quite overwhelmed looking into the Azure documentation for Javascript image uploading, and every "tutorial" starts with create a web application, storage account, and app service.
All I would like to do is store images from the user in Azure storage, so that when I eventually deploy the website, the data is available to be accessed and then my front end or API can call Azure to get the images for the user. I apologize if the question is confusing or vague, I am really just overwhelmed by Azure's documentation and it seems like such a simple and common problem. Any guidance or references would be greatly appreciated.
Yes, it's quite possible. You simply create an Azure Storage account and upload your files as blobs via that account. Then they will be available publicly on the Internet, and your web application can reference them from wherever it is hosted.
It is possible as I believe it is quite a common practice to have a Content Delivery Network to deliver the images. I am not very familiar with Azure but I am with AWS and I can tell you that you can use an AWS S3 bucket to store the images and JSON. It comes with many different configuration options to allow content to be protected or open to the general internet.

Flutter connecting to a database in server

I'm new to flutter and i really want to know, is there a way to connect to a database server (for instance mysql) in flutter rather using firebase. I'm working on a smart parking system project where i need to insert the latitude and longitude of the parking area which is free into the database which is created in server and retrieve it whenever user requests for it. It would be great if anyone gives solution for above mentioned problem (Flutter with database).
Since Flutter is just a UI Framework, topics such as persistence and databases may be out of scope or may depend on the use case.
Flutter UI's can persist data (application state) for short periods of time in a manner that is really only useful for the purposes of creating a good User Experience (is this button click? is it green? etc.)
For persisting more useful data outside of the application and on the actual device, you may want to consider the Shared Preferences Plugin for Flutter.
Wraps NSUserDefaults (on iOS) and SharedPreferences (on Android),
providing a persistent store for simple data. Data is persisted to
disk automatically and asynchronously.
Now, if you require persisting data in any centralized manner (e.g. RDMS, Firebase, or any data persistence service) your options are:
Persistence options that have a Flutter plugin (e.g. Firestore, Firebase)
Build your own service layer using HTTP, gRPC that talks to some backend service that provides access to a data store. You can do this with Express, Rails, CloudFunctions, etc.
As for connecting directly to a database such as MySQL, I don't see why you couldn't do that (maybe there is some technical limitation), but this would be a very bad idea in any practical situations as (unlike Firebase/Firestore) you won't be able to protect your data store once any client application has write access.
It sounds like you need a central read/write data store, so your best bet may be to host a server that provides access to a database while exposing an API to Flutter for which you can use dart:io to make requests.
Try using sqflite. It's a package you can include in your Flutter app that allows you to persist data to the local device. You will need to use the path_provider as well. Here is the link to the repository on Github https://github.com/tekartik/sqflite

Creating a REST API for static hosting

I know this sounds crazy, but I had a thought and I was willing to try it out. I use GitLab pages for all my online projects, but a lot of them are ASP.NET MVC, which is an issue as I don't think you can run ASP.NET MVC sites on GitLab pages. I then thought, what if I make a site using something like angular or node.js, and have a central API for all my web projects? I thought that was a great idea, until I realized I couldn't use a database either. I guess what I'm asking is, would it be possible to create a REST API that uses JSON files for storage and node.js as the request pages, to create an API without a database?
Of course.
If you think about a database from the perspective of your application code, it is basically just a place to store and retrieve data.
Imagine the database library you are using has two simple methods, store and retrieve. In your application code, you could write db.store('here is the item') and the later on, db.retrieve().
However, those store and retrieve methods could be implemented in many different ways to provide the same effective behavior from the perspective of your application. Some examples:
Send/query the data to/from an external data store, such as PostgreSQL
Write it to a file on disk and read it back later
Store the data in memory
Make HTTP requests to an external system to store the data
Some of these options will be more or less appropriate depending on your exact requirements, however, the general idea is that given a database API, you could implement the exact same method signatures with a completely different approach.

Synchronise local WebSQL/IndexedDB database with 'pre-built' database file?

Is there any plan to make it possible to download (or synchronise from) a 'pre-built' database file, so to speak, for use with a local web browser database like WebSQL or IndexedDB?
At the moment, to add or update a local database it's necessary to export or store data in a format such as XML or JSON, then get, parse and store the data.
I am under the impression that what you're looking for would be too much over-standardization on the browser side. As I understand it, IndexedDB is meant to be simple and robust enough for anyone to write JavaScript code that does the synchronization to your database server of choice.
In the meantime, you might take a look at these projects:
PouchDB - An implementation of CouchDB on top of IndexedDB. One of the premises is to offer the same synchronization (master-to-master) decentralized capabilities of CouchDB on the browser.
BrowserCouch - A similar project but using WebSQL as browser storage.