Make sure that the new templates have been installed by running this command: Install the AWS Lambda Templates extension to the dotnet command line, and ensure that the AWS templates have been installed These extensions will let you deploy and invoke a Lambda function from the command line.ĭotnet tool install -g Install the extensions to the dotnet command line. NET development and Lambda functions is here: The first step was to read the AWS documentation on writing Lambda functions using C#. Of course, I could have used my MacBook to remote into my Windows machine, but out of curiosity, I wanted to see if I could do everything on my MacBook. I wanted to write refactor the code as a Lambda function, but I wanted to do so using Visual Studio Code on my lightweight MacBook instead of using my much-heavier Windows machine. The generated document will then be stored on S3, and a notification would be broadcast on SNS. This way, when the company has to generate a lot of documents at month-end, we can kick off a Lambda function that would generate a single document. When many people need to generate documents at the same time, the performance of the server degrades so severely that it impacts the company.Īs part of the migration to AWS that I am doing, I wanted to take this document-generation process and move it to a Lambda function on AWS. Currently, the document generation process runs on a single HP D元60 server. One of CTO-as-a-Service’s clients current has a synchronous function that is used to generate Microsoft Word documents from data that is stored in an SQL Server database. This article details the steps that I took in order to write my first C#-based Lambda function on my MacBook and deploy it to AWS. I have been a big fan of Visual Studio Code for writing Node and Python apps, but I never tried to write a. Since my primary laptop is now a Mid-2012 MacBook Air, I have been using Visual Studio for Mac as my primary IDE for writing C# apps, mainly using Xamarin. NET Core applications is to use Visual Studio 2017/2019 on my Windows laptop. If you goto the aws lambda console, you will find the newly created serverless function, what you uploaded couple of sec ago.The way that I have usually written C#. Important: this is an internal testing tool, you can test the lambda in many different was, like with api gateway, Read this for more possibility If everything gone smooth, you will arrive at the testing tool, you can enter some string into the input field, without that, you will get an error - as the lambda can't parse the empty input into string. At the first step, just enter somehthing in the "function name" field, and press nextĪt the second step, you need to select an existing role (permission), for the function, or you can create a new one, you can fine tune many other parameters, but for this tutorial, let's go with the defaults.ĭuring the publising you will see the progress log output a nice wizard will guide you through the process. Let's upload it to the aws, of course the workflow also very well prepared by amazon, just press the "publish to aws lambda" in the solution explorer shortcut menu. The ready made source is quite simple, but works like a charm, and it's a good starting point for your learning curve You can choose from many different blueprint, so you don't need to write the skeleton boilerplate code, everything will be ready on your table - quick server :-) - select the "empty function" blueprint for this test In visual studio, with the aws toolkit, creating a lambda function is easy like 1-2-3, just create a new project, and select the proper template from the dialog, The credential information will be store locally, in your profile (windows), under c:\users\XXX\.aws\credentials, you can use this credential information by the other aws tools, like the aws cli. The AWS Explorer is a very nice handy tool, integrated into visual studioĪs a setup phase, you need to enter the aws credentials to have a smooth experience, if you are not the the us-east1 region, then click on the "click here", and you will get the account profile dialog, just enter the access key, and the secret key, and everything is ready-to-go. To easily handle all the aws related task, amazon developed a nice extension for Visual studio, an "AWS Toolkit for Visual Studio", you can download from the marketplace, or the link is available at the amazon website Īfter installing you will have a very handy menu at the solution explorer (publish to aws lambda) - and extra tools / project templates in studio, you can manage many aws resource from visual studio - (i like it) - for example, you can launch ec2 instance directly from studio. Many people think that creating a lambda function is hard, that's not true, you can create lambda many different way, many of them very easy, we are going for the visual studio path Install AWS toolkit
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