ec2.WaitUntilPasswordDataAvailableWithContext never works (always returns ResourceNotReady)

[barri2gi]

Confirm by changing [ ] to [x] below to ensure that it's a bug:

• I've gone though Developer Guide and API reference
• I've checked AWS Forums and StackOverflow for answers
• I've searched for previous similar issues and didn't find any solution

Describe the bug
Calling ec2.WaitUntilPasswordDataAvailableWithContext always exceeds the timeout and returns ResourceNotReady, even when the instance's password data is ready and available

Version of AWS SDK for Go?
v1.33.5

Version of Go (go version)?
go1.14.2 darwin/amd64

To Reproduce (observed behavior)

1. Launch a new Windows EC2 t2.micro instance in the us-east-1 region, providing a key-pair. I used AMI ID ami-05bb2dae0b1de90b3. Wait until the instance is running and verify its password data is available in the AWS Management Console via the "Connect" button, then the "Get Password" button.

2. Run the following code

package main

import (
	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/awserr"
	"github.com/aws/aws-sdk-go/aws/request"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/ec2"
	"os"

	"fmt"
)

func main() {

	// Initialize a session in us-east-1 that the SDK will use to load
	// credentials from the shared credentials file ~/.aws/credentials.
	session, _ := session.NewSession(aws.NewConfig().WithRegion("us-east-1"))
	ec2Client := ec2.New(session)

	// Verify the password data is available and start a waiter to test that functionality
	instanceId := "i-019ca9f16bb7d5b0e"
	passwordDataInputRequest := &ec2.GetPasswordDataInput{
		InstanceId: aws.String(instanceId),
	}
	getPasswordDataOutput, _ := ec2Client.GetPasswordData(passwordDataInputRequest)
	if len(*getPasswordDataOutput.PasswordData) > 0 {
		fmt.Printf("password data is ready for %s. starting waiter to test that functionality...\n", instanceId)
		ctx := aws.BackgroundContext()
		err := ec2Client.WaitUntilPasswordDataAvailableWithContext(ctx, passwordDataInputRequest, request.WithWaiterMaxAttempts(5))
		if err != nil {
			aerr, ok := err.(awserr.Error)
			if ok && aerr.Code() == request.WaiterResourceNotReadyErrorCode {
				fmt.Fprintf(os.Stderr, "timed out while waiting for password data to become available for %s\n", instanceId)
			}
			panic(fmt.Errorf("failed to wait for password data to become available for %s:\n%v", instanceId, err))
		}
	}
}

Expected behavior
I expect the waiter to return almost immediately, as it's clear the instance's password data does exist.

Additional context
Nothing to add

[diehlaws]

Thanks for bringing this to our attention @barri2gi. I'm able to reproduce the described behavior - issuing a GetPasswordData call for an instance that has password data available elicits a successful response from the service, however WaitUntilPasswordDataAvailable times out on the same instance despite the HTTP response from the service including the expected PasswordData field. We're looking into this behavior and will update the issue once we have additional information.

[stobrien89]

Created a separate ticket to request replacement of existing waiter: P51806969

[lucix-aws]

aws/aws-sdk-go#5270

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