prometheus/vendor/github.com/aws/aws-sdk-go/service/ec2/customizations.go

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