mirror of
https://gitea.com/Lydanne/buildx.git
synced 2025-11-04 10:03:42 +08:00
121 lines
3.4 KiB
Go
121 lines
3.4 KiB
Go
package http
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"net/http"
|
|
|
|
smithy "github.com/aws/smithy-go"
|
|
"github.com/aws/smithy-go/middleware"
|
|
)
|
|
|
|
// ClientDo provides the interface for custom HTTP client implementations.
|
|
type ClientDo interface {
|
|
Do(*http.Request) (*http.Response, error)
|
|
}
|
|
|
|
// ClientDoFunc provides a helper to wrap a function as an HTTP client for
|
|
// round tripping requests.
|
|
type ClientDoFunc func(*http.Request) (*http.Response, error)
|
|
|
|
// Do will invoke the underlying func, returning the result.
|
|
func (fn ClientDoFunc) Do(r *http.Request) (*http.Response, error) {
|
|
return fn(r)
|
|
}
|
|
|
|
// ClientHandler wraps a client that implements the HTTP Do method. Standard
|
|
// implementation is http.Client.
|
|
type ClientHandler struct {
|
|
client ClientDo
|
|
}
|
|
|
|
// NewClientHandler returns an initialized middleware handler for the client.
|
|
func NewClientHandler(client ClientDo) ClientHandler {
|
|
return ClientHandler{
|
|
client: client,
|
|
}
|
|
}
|
|
|
|
// Handle implements the middleware Handler interface, that will invoke the
|
|
// underlying HTTP client. Requires the input to be a Smithy *Request. Returns
|
|
// a smithy *Response, or error if the request failed.
|
|
func (c ClientHandler) Handle(ctx context.Context, input interface{}) (
|
|
out interface{}, metadata middleware.Metadata, err error,
|
|
) {
|
|
req, ok := input.(*Request)
|
|
if !ok {
|
|
return nil, metadata, fmt.Errorf("expect Smithy http.Request value as input, got unsupported type %T", input)
|
|
}
|
|
|
|
builtRequest := req.Build(ctx)
|
|
if err := ValidateEndpointHost(builtRequest.Host); err != nil {
|
|
return nil, metadata, err
|
|
}
|
|
|
|
resp, err := c.client.Do(builtRequest)
|
|
if resp == nil {
|
|
// Ensure a http response value is always present to prevent unexpected
|
|
// panics.
|
|
resp = &http.Response{
|
|
Header: http.Header{},
|
|
Body: http.NoBody,
|
|
}
|
|
}
|
|
if err != nil {
|
|
err = &RequestSendError{Err: err}
|
|
|
|
// Override the error with a context canceled error, if that was canceled.
|
|
select {
|
|
case <-ctx.Done():
|
|
err = &smithy.CanceledError{Err: ctx.Err()}
|
|
default:
|
|
}
|
|
}
|
|
|
|
// HTTP RoundTripper *should* close the request body. But this may not happen in a timely manner.
|
|
// So instead Smithy *Request Build wraps the body to be sent in a safe closer that will clear the
|
|
// stream reference so that it can be safely reused.
|
|
if builtRequest.Body != nil {
|
|
_ = builtRequest.Body.Close()
|
|
}
|
|
|
|
return &Response{Response: resp}, metadata, err
|
|
}
|
|
|
|
// RequestSendError provides a generic request transport error. This error
|
|
// should wrap errors making HTTP client requests.
|
|
//
|
|
// The ClientHandler will wrap the HTTP client's error if the client request
|
|
// fails, and did not fail because of context canceled.
|
|
type RequestSendError struct {
|
|
Err error
|
|
}
|
|
|
|
// ConnectionError returns that the error is related to not being able to send
|
|
// the request, or receive a response from the service.
|
|
func (e *RequestSendError) ConnectionError() bool {
|
|
return true
|
|
}
|
|
|
|
// Unwrap returns the underlying error, if there was one.
|
|
func (e *RequestSendError) Unwrap() error {
|
|
return e.Err
|
|
}
|
|
|
|
func (e *RequestSendError) Error() string {
|
|
return fmt.Sprintf("request send failed, %v", e.Err)
|
|
}
|
|
|
|
// NopClient provides a client that ignores the request, and returns an empty
|
|
// successful HTTP response value.
|
|
type NopClient struct{}
|
|
|
|
// Do ignores the request and returns a 200 status empty response.
|
|
func (NopClient) Do(r *http.Request) (*http.Response, error) {
|
|
return &http.Response{
|
|
StatusCode: 200,
|
|
Header: http.Header{},
|
|
Body: http.NoBody,
|
|
}, nil
|
|
}
|