In this article, we will see a simple way to Get File Size in C#.NET.

We will be using a very useful class FileInfo available in C#.NET.

We will cover below aspects,

FileInfo class provides properties and instance methods while dealing with the file,

• Directory – retrieves an object that represents the parent directory of a file.
• DirectoryName – retrieves the full path of the parent directory of a file.
• Exists – checks for the presence of a file.
• IsReadOnly – gets or sets a value that specifies whether a file can be modified.
• Length -gets the size of a file.
• The name gets the name of a file.

Below is a sample method that will give you file size in bytes which you can convert to KB or MB size as required.

 
static long GetFileSize(string FilePath)
        {
            if (File.Exists(FilePath))
            {
                return new FileInfo(FilePath).Length;
            }
            return 0;
        }

FileInfo class has a length property that gives the size, in bytes, of the current file.

            int bytesRead;

            string filePath = @"C:\Test\File\file-input- 
            thecodebuzz.txt";


            long fileSizeibBytes = GetFileSize(filePath);
            

C# Get file size in Bytes

long fileSizeibBytes = GetFileSize(filePath);

C# Get file size in KB

Below is an example to get file size in KB using C#,

long fileSizeibKbs = fileSizeibBytes / 1024;

C# get file size in MB or GB

long fileSizeibMbs = fileSizeibBytes / (1024*1024);

References :

• Unit Test and Mock File methods

• Open file in browser instead of downloading

Do you have any comments or ideas or any better suggestions to share?

Please sound off your comments below.

Happy Coding !!

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The post How to Get File Size in C# .NET first appeared on TheCodeBuzz.

Today in this article, we shall see how to execute the Curl POST JSON command.

CURL is a tool to transfer data from or to a server, using different types of protocol protocols.

Today we shall cover below basic scenarios of using curl commands,

Curl POST JSON with string request

Command :

Post example with string object as request body

curl -X POST "your-post-url" -H "accept: text/plain" -H "Content-Type: application/json" -d "\"your string request data\""

In the above command,

-X —-> The HTTP verb indicating operation is GET, POST, PUT or DELETE, etc

–d or --data  —-> the data you want to send.

Example 1

Above we are passing String object as a request body.

curl -X POST "https://localhost:44341/api/Values" -H "accept: text/plain" -H "Content-Type: application/json" -d "\"kjhlkjlj\""

Curl POST JSON request

Example2

curl -X POST "https://localhost:44341/api/Values" -H "accept: text/plain" -H "Content-Type: application/json" -d '{"key1":"value1", "key2":"value2"}'

Above we are passing JSON data as the request body parameter.

The response header is as below,

 access-control-allow-origin: * 
 content-type: text/plain; charset=utf-8 
 date: Fri, 24 Jan 2020 00:30:12 GMT 
 server: Microsoft-IIS/10.0 
 transfer-encoding: chunked 
 x-powered-by: ASP.NET 

CURL POST JSON using Basic Authentication

Below is a simple command which you can use against API or service which expects Basic Authentication credentials.

Command:

curl -X POST "<URL>" -H "accept: text/plain" -H "Authorization: Basic <TOKEN>"

Example:

curl -X POST "https://localhost:44378/Accounts" -H "accept: text/plain" -H "Authorization: Basic ZGZzZGY6c2Rmcw=="

I have executed the commands using Git Bash shell,

One can also pass username and password in the format -u username: password which gets translated to Bas64 string.

CURL JWT Bearer Authentication

Below is a basic command which you can run use against API or service which expects JWT Bearer authentication credential.

Command:

curl -X POST "https://localhost:44341/api/Values" -H "accept: text/plain" -H "Authorization: Bearer <token>

Example:

curl -X POST "https://localhost:44341/api/Values" -H "accept: text/plain" -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1Nzk4MzkzODksImlzcyI6Imh0dHBzOi8vbG9jYWxob3N0OjQ0MzQxIiwiYXVkIjoiaHR0cHM6Ly9sb2NhbGhvc3Q6NDQzNDEifQ.6UTixm8bekorxcw0lL8x-mBkNVaIK003LzMtkuIhasZ8"

References:

• Testing REST API/Services using CURL Command Line

• RESTFul API Naming Conventions

Do you have any comments or ideas or any better suggestions to share?

Please sound off your comments below.

Happy Coding !!

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The post Curl POST JSON with examples – Guidelines first appeared on TheCodeBuzz.

Today in this article, We shall see how to enable Swagger OpenAPI documentation and Add/Hide OpenAPI Swagger based on Environment (DEV, TEST, PROD)

You might get this requirement on a few occasions where you may want to control the display of API methods based on the environment example DEV, TEST, PROD.

There could be multiple requirements like hide or exclude routes API, endpoint, or Controller for Swagger OpenAPI documentation based on the environment your API running.

This customization could be of use to many of you as swagger is not just an API description tool.

It also allows you to test any of your APIs by passing inputs and getting the required results.

Today in this article, we will cover below aspects,

Today we will control how to display API based on a selected environment i.e. if you are running your swagger in the “TEST” environment then it will not display API that is in DEV or in progress and not meant to be used in a higher environment.

ASP.NET Core uses OpenAPI V3.0 specifications which are guidelines and specifications around how the API documentation should be.

In today’s article, we shall cover below,

• Adding OpenAPI V3 documentation specification to API

• Enabling Swagger based on the Environment

Create ASP.NET Core API

Create ASP.NET Core 3.1 or .NET 5.0 API

Add Swashbuckle.AspNetCore NuGet package

Please add below Nuget package to your API using a Command prompt or PMC(package manager console) or Nuget Package Manager

PM> Install-Package Swashbuckle.AspNetCore -Version 5.6.3

Note: Please use the version to the latest available.

This NuGet package shall add all other required components as shown below and you need not have to add them explicitly,

• Swashbuckle.AspNetCore.SwaggerUI
• Swashbuckle.AspNetCore.Swagger
• Swashbuckle.AspNetCore.SwaggerGen

Let’s talk about a simple scenario where I have new API development going on and that API swagger definition I don’t want to be available to the TEST region yet.

Below are the two APIs that I would like to control the display based on the environment.

Let’s assume below the sample API route and I have already released it for DEV and then moved it to TEST environment.

        [HttpGet]
        [Route("US")]
        public IEnumerable<WeatherForecastUS> GetWatherUSA()
        {
            var rng = new Random();
            return Enumerable.Range(1, 5).Select(index => new 
             WeatherForecast
            {
                Date = DateTime.Now.AddDays(index),
                TemperatureC = rng.Next(-20, 55),
                Summary = Summaries[rng.Next(Summaries.Length)]
            })
            .ToArray();
        }

Now let’s assume, I have a new route as below for UK which I would like to display for DEV alone but not the TEST or PROD region.

        [HttpGet]
        [Route("UK")]
        public IEnumerable<WeatherForecastUK> GetWeatherUK()
        {
            var rng = new Random();
            return Enumerable.Range(1, 5).Select(index => new 
            WeatherForecastNew
            {
                DateOfForcast = DateTime.Now.AddDays(index),
                Temperature = rng.Next(-20, 55),
                Summary = Summaries[rng.Next(Summaries.Length)]
            })
            .ToArray();
        }

Currently, you shall see the swagger API definition generated as below,

Please see the below article on enabling basic Swagger API documentation,

• Add Swagger API Documentation in ASP.NET Core 3.1

Adding IDocumentFilter implementation

Please add the IDocumentFilter implementation as below,

public class CustomEnviornmentFilter : IDocumentFilter
    {

        public void Apply(OpenApiDocument swaggerDoc, DocumentFilterContext context)
        {
// Add your implementation here 
        }
      }

Below is the complete implementation for Apply method,

Remove or Hide API routes from the Swagger API definition

Below is the implementation for removing the required routes from API documentation.

private static void RemoveOtherRoutes(OpenApiDocument swaggerDoc, string kepath)
        {
            var removeRoutes = swaggerDoc.Paths.Where(
                               x => x.Key.ToLower().Contains(kepath.ToLower()))
                                .ToList();
            removeRoutes.ForEach(x => { swaggerDoc.Paths.Remove(x.Key); });
        }

Update ConfigureServices() method

You need to enable the above CustomDocument filter within AddSwaggerGen,

 c.DocumentFilter<CustomEnviornmentFilter>();

Please here for more details on the configuration.

Enabling Custom Attributes on Method or Controller

I see custom attribute annotation as the easiest way of managing the method environment.

Let’s create three Custom Attributes for Dev , Test and Prod as below,

    /// <summary>
    /// 
    /// </summary>
    public class DevApiAttribute : ActionFilterAttribute
    {

    }

    /// <summary>
    /// 
    /// </summary>
    public class TestApiAttribute : ActionFilterAttribute
    {
    }

    /// <summary>
    /// 
    /// </summary>
    public class ProdApiAttribute : ActionFilterAttribute
    {
    }

Next, you need to just enable these attributes for each Controller or API route to specify the environment.

Let’s execute the Swagger definition in DEV environment,

That’s all, with the above arrangements, the above routes for TEST or PROD will be removed/hidden from generated swagger documentation.

I found this way we get better control on what API to show or hide.

The above settings can be applied at the Controller or Individual method/route level.

Likewise please decorate your Routes/Methods or Controller as required.

Feature Toggle for swagger routes

The above way of hiding or removing the swagger route will also resemble feature toggling.

The good thing about this approach is you can very much integrate this logic with your existing feature toggle architecture if any.

• Add Swagger API documentation to .NET Core 2.2
• Swagger API Documentation in .NET Core 3.1

Do you have any comments or suggestions or any better approach to deal with this?

Please sound off your comments below.

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The post Add/Hide OpenAPI Swagger based on Environment (DEV, TEST, PROD) first appeared on TheCodeBuzz.

Today in this article, we shall see how to write MongoDB Regex Like query ( resembles SQL ‘like’ query) using regex pattern with case sensitive and insensitive search with examples.

Today in this article, we will cover below aspects,

I shall be explaining the queries using the like query in MongoDB Shell. If you are interested to refer a mongo query without Regex, please refer to the article below,

• MongoDB ‘Like’ Query pattern -Part 1

I have a sample MongoDB document below in one of the collections. Here we shall be trying to search all the documents using a MongoDB-like query

[
  {
    "_id": "5db5a4476997188b2722c820",
    "Name": "Design Patterns",
    "Price": 54.93,
    "Category": "Computers",
    "Author": "Ralph Johnson"
  },
  {
    "_id": "5ff50353a29ce9564c2724e2",
    "Name": "Design Patterns",
    "Price": 54.93,
    "Category": "Computers",
    "Author": "Mike Casper"
  },
  {
    "_id": "5ff503cda29ce9564c2724e3",
    "Name": "Design Patterns",
    "Price": 54.93,
    "Category": "Computers",
    "Author": "TheCodeBuzz"
  }
 {
    "_id": "45b5a4476543188b2722c34550",
    "Name": "Design Patterns- II",
    "Price": 60.93,
    "Category": "Computers",
    "Author": "Ralph johnson"
  },
]

Scenarios 1 – MongoDB Regex Query with Like

Let’s build MongoDB-like query using a regex for getting Author names where the name contains a word like “J” or “j” for the Author field.

Assumptions:

“J” or “j” could be contained at the start or last or in the middle or anywhere else of Author names.

Query pattern

MongoDB regex query with case-sensitive search

{ Field Name: {'$regex' : 'string'}}

MongoDB regex query with case insensitive search

{ Field Name: {'$regex' : 'string', '$options' : 'i'}}

Example Query 1

db.Books.find({Author:{'$regex' : 'J'}})

Mongo Query Result :

   db.Books.find({Author:{'$regex' : 'J'}})
   { "_id" : ObjectId("5db5a4476997188b2722c820"), "Name" : "Design Patterns", "Price" : 54.93, "Category" : "Computers", "Author" : "Ralph Johnson" }
   { "_id" : ObjectId("5ff503cda29ce9564c2724e3"), "Name" : "Code Refactoring", "Price" : 43.15, "Category" : "Computers", "Author" : "Julia Robert" } 

db.Books.find({Author:{'$regex' : 'j'}})
 { "_id" : ObjectId("5f34a2430c3ca98a8c9052d2"), "Name" : "Design Patterns", "Price" : 54.93, "Category" : "Computers", "Author" : "Ralph johnson" }

Example Query 2 – Case insensitive

Let’s now use case insensitive query using $options,

{ Author:{'$regex' : 'J', '$options' : 'i'}

Mongo Query Result :

Below is the query for like in MongoDB

  > db.Books.find({Author:{'$regex' : 'J', '$options' : 'i'}})
   { "_id" : ObjectId("5db5a4476997188b2722c820"), "Name" : "Design Patterns", "Price" : 54.93, "Category" : "Computers", "Author" : "Ralph Johnson" }
   { "_id" : ObjectId("5f34a2430c3ca98a8c9052d2"), "Name" : "Design Patterns", "Price" : 54.93, "Category" : "Computers", "Author" : "Ralph johnson" }
   { "_id" : ObjectId("5ff503cda29ce9564c2724e3"), "Name" : "Code Refactoring", "Price" : 43.15, "Category" : "Computers", "Author" : "Julia Robert" } 

Scenarios 2 – MongoDB Regex Query with ‘Like’ that start with criteria

Let’s build a query to get the list of items that start with some search criteria. Example “Ro” for Author field.

Query pattern

{ Field Name : /^Ro/ }


Where Ro is your search cretieria.

Example Query

{ Author :{'$regex' : '^Ro', '$options' : 'i'}})

Search Result:

Scenarios 3 – Regex End with match Mongo Query

Let’s build a query to Get the list of items that ends with some search criteria. Example “rt” for Author field

Query pattern

{ Field Name : { ‘$regex’ : ‘robert$’ , ‘$options’ : ‘i’ } }

Where ‘robert’ is your search criteria

Example Query

{ Author :{'$regex' : 'robert$', '$options' : 'i'}}

Mongo Shell results,

   > db.Books.find({ Author :{'$regex' : 'robert$', '$options' : 'i'}})
   { "_id" : ObjectId("5ff503cda29ce9564c2724e3"), "Name" : "Code Refactoring", "Price" : 43.15, "Category" : "Computers", "Author" : "Julia Robert" } 

Above query, we have Author “Julia Robert” that matches with search criteria.

Scenarios 4 – Regex Exact Match Mongo Query

Let’s look into Regex Exact Match Mongo Query.

Query pattern

{ Field Name : { ‘$regex’ : ‘robert$’ , ‘$options’ : ‘i’ } }

Where ‘robert’ is your search criteria

Example Query:

{ Author :{'$regex' : '^julia robert$', '$options' : 'i'}}

Where ‘julia robert’ is our exact search criteria. Here Author field value has to match exactly (but case insensitive )

Mongo Shell results,

   > db.Books.find({ Author :{'$regex' : 'robert$', '$options' : 'i'}})
   { "_id" : ObjectId("5ff503cda29ce9564c2724e3"), "Name" : "Code Refactoring", "Price" : 43.15, "Category" : "Computers", "Author" : "Julia Robert" } 

Above query, we have Author “Julia Robert” that matches with exact search criteria.

References:

• MongoDB Query with ‘Like’ without Regex– Guidelines

Do you have any comments or ideas or any better suggestions to share?

Please sound off your comments below.

Happy Coding !!

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The post MongoDB Regex Like query pattern -Guidelines first appeared on TheCodeBuzz.

Today in this article, we will cover below aspects,

Azure Pipelines CI/CD pipeline configuration gives an error,

##[error]No hosted parallelism has been purchased or granted. To request a free parallelism grant, please fill out the following form https://aka.ms/azpipelines-parallelism-request

Resolution:

The issue I found to be recent updates from Microsoft guidelines and best practices.

Microsoft guidelines

We have temporarily disabled the free grant of parallel jobs for public projects and for certain private projects in new organizations. However, you can request this grant by submitting a request. Existing organizations and projects are not affected. Please note that it takes us 2-3 business days to respond to your free tier requests.

As per the above guidelines,

• New Azure DevOps public projects will no longer receive a free grant of concurrent pipelines.

• This policy won’t impact existing open-source or public project users.

• As a result, when you establish a new public project, you won’t be able to run pipelines.

Additionally for getting access to Azure DevOps pipelines, please fill out the form using the below link,

Azure DevOps Parallelism Request – https://aka.ms/azpipelines-parallelism-request

For more information please visit,

• https://docs.microsoft.com/en-us/azure/devops/pipelines/licensing/concurrent-jobs?view=azure-devops&tabs=ms-hosted

That’s all! Happy coding!

Does this help you fix your issue?

Do you have any better solutions or suggestions? Please sound off your comments below.

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