Question 137002 in Amazon Web Sevices Question posted in
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Amazon web services – How can I catch 410 error from `postToConnection` call via golang aws sdk?

I am using websocket apigateway in AWS to manage websocket connections. There are cases that the connection is disconnected but the @disconnect route is not triggered. In this case, postToConnection api call will return 410 error.

I am using golang sdk github.com/aws/aws-sdk-go-v2/service/apigatewaymanagementapi. The postToConnection API returns PostToConnectionOutput, error. How can I detect whether the error is 410 error?

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2

Answers


  1. 0

    You can check the returned error is a type of GoneException

    See https://aws.github.io/aws-sdk-go-v2/docs/handling-errors/

        import(
      api "github.com/aws/aws-sdk-go-v2/service/apigatewaymanagementapi"
      apitypes "github.com/aws/aws-sdk-go-v2/service/apigatewaymanagementapi/types"
    )
    


    func main() {
        
        svc := api.New(api.Options{
            Region: "your-region",
        })
    
        output, err := svc.PostToConnection(ctx, &api.PostToConnectionInput{
            ConnectionId: aws.String("your-connection-id"),
        })
    
        if err != nil {
            var gne *apitypes.GoneException
            if errors.As(err, &gne) {
                log.Println("error:", gne.Error())
            }
            return
        }
    }
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  2. 0

    To detect whether the error returned from the postToConnection API is a 410 error, you can check the error type using a type assertion.

    Here is an example:

    import "github.com/aws/aws-sdk-go-v2/service/apigatewaymanagementapi"

func myFunction() {
    // Create a new client
    client := apigatewaymanagementapi.New(myConfig)

    // Make the postToConnection API call
    _, err := client.PostToConnection(myContext, myInput)

    // Check if the error is a 410 error
    if aerr, ok := err.(apigatewaymanagementapi.GoneException); ok {
        // Handle the 410 error here
        // e.g. reconnect or close the connection
    } else {
        // Handle other errors here
        // e.g. log the error or retry the API call
    }
}

    In the above example, we first make the postToConnection API call and check the error returned by the API call. We then use a type assertion to check if the error is of type apigatewaymanagementapi.GoneException. If the error is a GoneException, we can handle it appropriately, for example, by reconnecting or closing the connection.

    If the error is not a GoneException, we can handle it in some other way, for example, by logging the error or retrying the API call.

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