Introduction to building AWS Lambda using .NET Core 3.1 (Introduction for .NET developers)

[@thetechlancer]

I usually do not comment but to be honest this was a task given to me at my job and I was searching for it so long. This saved much time and easily I did my task. Highly appreciated!

[@DotNetCoreCentral]

Glad I could help!

[@amidatongassassin]

Thank you so much for creating this tutorial. I find all the detail super clear and detailed. Thank you!

[@DotNetCoreCentral]

@amidatongassassin, thanks for watching!

[@mahendranchinnaiah7593]

Thank you so much. Most awaited topic.

[@DotNetCoreCentral]

@Mahendran Chinnaiah, thanks for watching and taking the time to write a comment!

[@praneethsign]

Thanks Bhai this is very helpful.. Hope more vidoes coming on AWS and C# combo 😍

[@DotNetCoreCentral]

@Praneeth Reddy, thanks for watching!

[@christopher5731]

Excellent video nice pacing and explanation of what you are doing.

[@DotNetCoreCentral]

@Ju66ernaut, thanks for watching!

[@shubhamandhale7634]

Can we debug this lamba locally? If yes how?

[@RodrigoMtzs]

really nice explanation!

[@DotNetCoreCentral]

@Rodrigo Martinez, thanks for watching!

[@ofercarmeli6508]

Great review. Thanks!!!

[@DotNetCoreCentral]

@Ofer Carmeli, thanks for watching!

[@sreejithkalarikkal1707]

I am using Aws SDK (.Net) and trying to create lambda function which needs encrypt an object while uploading to S3 bucket (encryption SSE KMS customer managed key) . Please help on below queries 1)how can I access the KMS CMK from lambda c# code? how to use that CMK key in S3 Putobject request serverside encryption type?

[@AntoVargheseVadakkan]

Very Helpful

[@DotNetCoreCentral]

@Anto Varghese, thanks!

[@keshavsingh4522]

great Job, thanks

[@DotNetCoreCentral]

@Keshav Singh, thanks for watching!

[@juanalbertomd]

I am pretty new using AWS lambda, I followed all the steps in the video, but when I am deploying the function I get this message: Error retrieving configuration for function LambdaDemo: The security token included in the request is invalid. What else do I need to configure?

[@motivationforthomas]

Hii Juan Alberto, I too got the same. Did you find any fix for it ?

[@hunqiangng2511]

how could like link two Llambda for SNS?

[@meganj7155]

I want to create a listener for a queue if not lambda where should I deploy it . Thanks in advance

[@DotNetCoreCentral]

you can deploy it as a console app inside a ECS cluster

[@cuomo24]

Thanks for this, very helpful. I have a request - could you do a walkthrough on how to hook this up to api gateway and test it with Postman?

[@DotNetCoreCentral]

@cuomo24, thanks for watching! The API Gateway integration is coming out tonight!

[@KleinKwakuFHouzin]

thank you

[@DotNetCoreCentral]

Thanks for watching!

[@skkkks2321]

Hello Sir, I created the lambda function but deploy has Error: Error retrieving configuration for function TAFunction: Unable to get IAM security credentials from EC2 Instance Metadata Service. Any Idea.Thanks

[@DotNetCoreCentral]

@Skk Kks, your IAM role is not configured properly. You need to first make sure that the profile that you are using has credentials set up for Lambda deployment access.

[@skkkks2321]

@@DotNetCoreCentral Great, it works, Thanks a million

[@DotNetCoreCentral]

@@skkkks2321 you are welcome!

[@sandeeprm9474]

Hi , is it possible to write multithreaded function in lambda using .net core?

[@DotNetCoreCentral]

@sandeep rm, you can, but I do not see any reason to use multiple threads inside of a Lambda function. Lambda should be a single responsibility function. AWS already takes care of scaling functions horizontally based on the load.

[@shalinireddymolakaseema7016]

i am confused after going into the visual studio code.How you got the file in there?

[@DotNetCoreCentral]

@shalini reddy molakaseema, after I created the code using dotnet command and AWS template, I opened the folder where the code is created by the code generator and opened the project from there. The dotnet/aws template generator will create a folder where you execute the command.

[@shalinireddymolakaseema7016]

Created publish archive (C:\Users\SMolak1\LambdaDemo\src\LambdaDemo\bin\Release etcoreapp3.1\LambdaDemo.zip). Error retrieving configuration for function LambdaDemo: Credential must have exactly 5 slash-delimited elements, e.g. keyid/date/region/service/term, got 'ACOGSupportRole/[e-mail]/20210422/us-east-1/lambda/aws4_request'@@@@@@@@GOT THIS ERROR

[@DotNetCoreCentral]

@@shalinireddymolakaseema7016 which step are you getting this error?

[@shalinireddymolakaseema7016]

@@DotNetCoreCentral in the final step while file getting zipped

[@DotNetCoreCentral]

@@shalinireddymolakaseema7016 looks like the zip file is created properly, it is failing after that. 1. Can you check if you configured your profile properly using AWS CLI? the command is "aws configure" 2. Are you calling the function in this format, where you are passing the profile name? if not is the profile name set in the was json configuration? "dotnet lambda deploy-function TestFunction --profile your-profile --region us-east-2 "

[@shoaibahmed342007]

Receiving "Error retrieving configuration for function Function: Unable to get IAM security credentials from EC2 Instance Metadata Service" during deployment the function.

[@DotNetCoreCentral]

@Shoaib Ahmed, did you follow the instructions to create the local AWS secret using the IAM user?

[@vivekgowda1576]

The target process exited without raising a CoreCLR started event. Ensure that the target process is configured to use .NET Core. This may be expected if the target process did not run on .NET Core. The program '[14396] dotnet-lambda-test-tool-6.0.exe' has exited with code 2147516566 (0x80008096). Getting this error ?

[@mikebreeden6071]

This was excellent and really what I needed. Now I need the "glue" I need to find your other videos that show how this connects to other services. Could you please put up links to any other parts of this that you have made? Thank you much. ... In case anyone else wants it, I found the next video: kzbin.info/www/bejne/l5WVnpdpaNlki5I

[@DotNetCoreCentral]

@Mike Breeden, thanks for watching! I am glad my video was helpful for you. I have created a playlist and made it available on my channel page called AWS. You should be able to find all videos related to AWS under that playlist.