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aws/aws-sdk-go-v2

Discuss you're experiences and questions with the Developer Preview AWS SDK for Go v2

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Nov 28 23:06

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jasdel on syncModels

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alikor

@alikor

can anyone point me to the documentation of this sdk v2 specificaly calling a aws lambda function

Renato Marinho

@renatomarinho

This message was deleted

Kai Hendry

@kaihendry

whoa, this is big news https://blog.golang.org/go-cloud

Kai Hendry

@kaihendry

google/go-cloud#259

Jason Del Ponte

@jasdel

Thanks for linking that @kaihendry go-cloud only supports the V1 AWS SDK for Go. Since the V2 SDK is still in preview this makes sense. I imagine a future version of go-cloud could support the v2 SDK once v2 is production ready.

Kai Hendry

@kaihendry

@jasdel wasn't there a trick to get detailed error responses...can't recall

RE permission errors

Kai Hendry

@kaihendry

@jasdel how do I get CredentialsChainVerboseErrors working in v2? Oh damn, here it is aws/aws-sdk-go-v2#98

Kai Hendry

@kaihendry

@jasdel you might find https://youtu.be/GXCFMxQ2tp4 fun

Kai Hendry

@kaihendry

@jasdel is there a good API to track when a forecast increases ? i.e. event upon it

(a billing forcast)

Kai Hendry

@kaihendry

is there no multipart api for golang? https://docs.aws.amazon.com/AmazonS3/latest/dev/uploadobjusingmpu.html

William Antonelli

@nanohard

@kaihendry https://docs.aws.amazon.com/sdk-for-go/api/service/s3/#CreateMultipartUploadInput

William Antonelli

@nanohard

@kaihendry There's this gist for reference: https://github.com/apoorvam/aws-s3-multipart-upload/blob/master/aws-multipart-upload.go

Kai Hendry

@kaihendry

nanohard: trying to figure out actually how to do it direct from a browser

Kai Hendry

@kaihendry

how does one get the AWS account number ?

Kai Hendry

@kaihendry

i wrote https://github.com/unee-t/estimatedcharges/blob/master/main.go to help print my estimatedcosts between accounts i am working on. Could it be better?

Kai Hendry

@kaihendry

is there a way to enumerate/range through credentials on a system?

Kai Hendry

@kaihendry

Struggling to change an S3 object to public

Kai Hendry

@kaihendry

sorry, i mean to change the content type of an S3 object

Luke Mallon

@Nalum

Hello all, I'm trying to use the SDK to start a mediaconvert job and need to use a custom endpoint to do so. Do I need to setup a custom EndpointResolver on my mediaconvert client or is there another way to use the custom endpoint?

Jason Del Ponte

@jasdel

@Nalum you can use the aws.ResolveWithEndpointURL utility to wrap your URL for media convert when creating the client. https://godoc.org/github.com/aws/aws-sdk-go-v2/aws#ResolveWithEndpointURL

@kaihendry sorry, i'm not aware of an API for tracking prices. The AWS Pricing service might be helpful for current pricing, https://aws.amazon.com/pricing/

@kaihendry thanks for sharing the video as well.

Luke Mallon

@Nalum

Do I get the URL via the mediaconvert.DescribeEndpointsRequest https://godoc.org/github.com/aws/aws-sdk-go-v2/service/mediaconvert#DescribeEndpointsRequest.Send?

Jason Del Ponte

@jasdel

Fixing #98 is still in our backlog, and plan to fix this issue. Tracking that issue is the best way to follow the status when update is available

@Nalum Correct i think that is the API that you need to use. It will return a URL endpoint that you use with the ResolveWithEndpointURL. Also if you have feedback on the naming of that helper please let us know. The aws package is kind of large and might be hard to find some things if not named well.

Luke Mallon

@Nalum

Thanks for the help :)

Luke Mallon

@Nalum

@jasdel the main thing that puts me at odds with the sdk is the use of pointers everywhere :)

Jason Del Ponte

@jasdel

Thanks for the feedback :) It can be counter intuitive at first. We've looked at several solutions both with v1 SDK and again with v2. So far using pointers has shown to be the best overall solution in the longterm. With that said, we're glad to review any additional ideas you have. aws/aws-sdk-go-v2#205 was the most recent discussion on pointers in the SDK

Luke Mallon

@Nalum

Thanks will have a read through :+1:

Jason Del Ponte

@jasdel

aws/aws-sdk-go#294 and aws/aws-sdk-go#363 are notable earlier discussions prior to the v1 SDK's original release.

Luke Mallon

@Nalum

@jasdel thanks for the links. I understand the reasoning behind the decision to use pointers and face that decision in my own work at the moment as well. It'll just take a little time to get used to :)

Kai Hendry

@kaihendry

Wonder if this getwidgetimage API Jeff mentions is available ? https://youtu.be/k85zzSRZLoc?t=117 @jasdel

kaihendry @kaihendry notices https://godoc.org/github.com/aws/aws-sdk-go-v2/service/cloudwatch#GetMetricWidgetImageRequest

Kai Hendry

@kaihendry

@jasdel MetricWidget needs better examples / documentation

or rather it needs modelling / typing

Kai Hendry

@kaihendry

now I see the source here: https://s.natalian.org/2018-10-03/1538577575_2558x1406.png

Kai Hendry

@kaihendry

@jasdel please critique https://github.com/kaihendry/prazespeed/blob/master/main.go ;)

fifarafa

@fifarafa

Hi, is v2 safe to use in production? When the Preview stage will finish?

Alwin Doss

@alwindoss

If I understand the time line correctly v1 of the SDK was in developer preview for just a couple of months. V2 has been in developer preview for almost a year now. It would help if we know the timeline when this would be production ready.

Pawel Lekki

@lekki

Hello guys, is it possible that v2 is significantly slower than v1. After upgrading to v2 calling dynamodb.GetItem by PK is no longer single digit ms. We're seeing at least 20ms performance degradation.

George Bolo

@gbolo

hey all

given an Instance struct, how do i determine the amount of memory it has? Do i need to maintain my own mapping of instanceType and memorySize?

I am able to determine core count with the CpuOptions attribute in this struct. But seems like there nothing for memory

golangengineer

@golangengineer

hey all, glad to discover the room

newbie question here: is there a main 'Go' or 'Golang' room, I can join for non-AWS-sdk questions?

Kai Hendry

@kaihendry

@jasdel wrt to the S3 API, should we be using s3manager to upload files as a rule?

Jason Del Ponte

@jasdel

@kaihendry correct, in general the S3manager will provide a better experience and retry capability that the S3 API's directly.

Kai Hendry

@kaihendry

@jasdel thanks, I'll try use pointer receivers more then aws/aws-sdk-go-v2#263