92 lines
2.7 KiB
Go
92 lines
2.7 KiB
Go
package ec2
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import (
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"time"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/awsutil"
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"github.com/aws/aws-sdk-go/aws/client"
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"github.com/aws/aws-sdk-go/aws/endpoints"
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"github.com/aws/aws-sdk-go/aws/request"
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)
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const (
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// customRetryerMinRetryDelay sets min retry delay
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customRetryerMinRetryDelay = 1 * time.Second
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// customRetryerMaxRetryDelay sets max retry delay
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customRetryerMaxRetryDelay = 8 * time.Second
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)
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func init() {
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initRequest = func(r *request.Request) {
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if r.Operation.Name == opCopySnapshot { // fill the PresignedURL parameter
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r.Handlers.Build.PushFront(fillPresignedURL)
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}
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// only set the retryer on request if config doesn't have a retryer
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if r.Config.Retryer == nil && (r.Operation.Name == opModifyNetworkInterfaceAttribute || r.Operation.Name == opAssignPrivateIpAddresses) {
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maxRetries := client.DefaultRetryerMaxNumRetries
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if m := r.Config.MaxRetries; m != nil && *m != aws.UseServiceDefaultRetries {
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maxRetries = *m
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}
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r.Retryer = client.DefaultRetryer{
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NumMaxRetries: maxRetries,
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MinRetryDelay: customRetryerMinRetryDelay,
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MinThrottleDelay: customRetryerMinRetryDelay,
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MaxRetryDelay: customRetryerMaxRetryDelay,
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MaxThrottleDelay: customRetryerMaxRetryDelay,
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}
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}
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}
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}
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func fillPresignedURL(r *request.Request) {
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if !r.ParamsFilled() {
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return
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}
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origParams := r.Params.(*CopySnapshotInput)
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// Stop if PresignedURL/DestinationRegion is set
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if origParams.PresignedUrl != nil || origParams.DestinationRegion != nil {
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return
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}
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origParams.DestinationRegion = r.Config.Region
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newParams := awsutil.CopyOf(r.Params).(*CopySnapshotInput)
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// Create a new request based on the existing request. We will use this to
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// presign the CopySnapshot request against the source region.
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cfg := r.Config.Copy(aws.NewConfig().
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WithEndpoint("").
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WithRegion(aws.StringValue(origParams.SourceRegion)))
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clientInfo := r.ClientInfo
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resolved, err := r.Config.EndpointResolver.EndpointFor(
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clientInfo.ServiceName, aws.StringValue(cfg.Region),
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func(opt *endpoints.Options) {
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opt.DisableSSL = aws.BoolValue(cfg.DisableSSL)
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opt.UseDualStack = aws.BoolValue(cfg.UseDualStack)
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},
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)
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if err != nil {
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r.Error = err
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return
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}
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clientInfo.Endpoint = resolved.URL
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clientInfo.SigningRegion = resolved.SigningRegion
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// Presign a CopySnapshot request with modified params
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req := request.New(*cfg, clientInfo, r.Handlers, r.Retryer, r.Operation, newParams, r.Data)
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url, err := req.Presign(5 * time.Minute) // 5 minutes should be enough.
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if err != nil { // bubble error back up to original request
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r.Error = err
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return
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}
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// We have our URL, set it on params
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origParams.PresignedUrl = &url
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}
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