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package client
import (
"context"
"encoding/json"
"fmt"
"io"
"net/url"
"github.com/aws/smithy-go"
smithymiddleware "github.com/aws/smithy-go/middleware"
smithyhttp "github.com/aws/smithy-go/transport/http"
)
type buildEndpoint struct {
Endpoint string
}
func (b *buildEndpoint) ID() string {
return "BuildEndpoint"
}
func (b *buildEndpoint) HandleBuild(ctx context.Context, in smithymiddleware.BuildInput, next smithymiddleware.BuildHandler) (
out smithymiddleware.BuildOutput, metadata smithymiddleware.Metadata, err error,
) {
request, ok := in.Request.(*smithyhttp.Request)
if !ok {
return out, metadata, fmt.Errorf("unknown transport, %T", in.Request)
}
if len(b.Endpoint) == 0 {
return out, metadata, fmt.Errorf("endpoint not provided")
}
parsed, err := url.Parse(b.Endpoint)
if err != nil {
return out, metadata, fmt.Errorf("failed to parse endpoint, %w", err)
}
request.URL = parsed
return next.HandleBuild(ctx, in)
}
type serializeOpGetCredential struct{}
func (s *serializeOpGetCredential) ID() string {
return "OperationSerializer"
}
func (s *serializeOpGetCredential) HandleSerialize(ctx context.Context, in smithymiddleware.SerializeInput, next smithymiddleware.SerializeHandler) (
out smithymiddleware.SerializeOutput, metadata smithymiddleware.Metadata, err error,
) {
request, ok := in.Request.(*smithyhttp.Request)
if !ok {
return out, metadata, fmt.Errorf("unknown transport type, %T", in.Request)
}
params, ok := in.Parameters.(*GetCredentialsInput)
if !ok {
return out, metadata, fmt.Errorf("unknown input parameters, %T", in.Parameters)
}
const acceptHeader = "Accept"
request.Header[acceptHeader] = append(request.Header[acceptHeader][:0], "application/json")
if len(params.AuthorizationToken) > 0 {
const authHeader = "Authorization"
request.Header[authHeader] = append(request.Header[authHeader][:0], params.AuthorizationToken)
}
return next.HandleSerialize(ctx, in)
}
type deserializeOpGetCredential struct{}
func (d *deserializeOpGetCredential) ID() string {
return "OperationDeserializer"
}
func (d *deserializeOpGetCredential) HandleDeserialize(ctx context.Context, in smithymiddleware.DeserializeInput, next smithymiddleware.DeserializeHandler) (
out smithymiddleware.DeserializeOutput, metadata smithymiddleware.Metadata, err error,
) {
out, metadata, err = next.HandleDeserialize(ctx, in)
if err != nil {
return out, metadata, err
}
response, ok := out.RawResponse.(*smithyhttp.Response)
if !ok {
return out, metadata, &smithy.DeserializationError{Err: fmt.Errorf("unknown transport type %T", out.RawResponse)}
}
if response.StatusCode < 200 || response.StatusCode >= 300 {
return out, metadata, deserializeError(response)
}
var shape *GetCredentialsOutput
if err = json.NewDecoder(response.Body).Decode(&shape); err != nil {
return out, metadata, &smithy.DeserializationError{Err: fmt.Errorf("failed to deserialize json response, %w", err)}
}
out.Result = shape
return out, metadata, err
}
func deserializeError(response *smithyhttp.Response) error {
// we could be talking to anything, json isn't guaranteed
// see https://github.com/aws/aws-sdk-go-v2/issues/2316
if response.Header.Get("Content-Type") == "application/json" {
return deserializeJSONError(response)
}
msg, err := io.ReadAll(response.Body)
if err != nil {
return &smithy.DeserializationError{
Err: fmt.Errorf("read response, %w", err),
}
}
return &EndpointError{
// no sensible value for Code
Message: string(msg),
Fault: stof(response.StatusCode),
statusCode: response.StatusCode,
}
}
func deserializeJSONError(response *smithyhttp.Response) error {
var errShape *EndpointError
if err := json.NewDecoder(response.Body).Decode(&errShape); err != nil {
return &smithy.DeserializationError{
Err: fmt.Errorf("failed to decode error message, %w", err),
}
}
errShape.Fault = stof(response.StatusCode)
errShape.statusCode = response.StatusCode
return errShape
}
// maps HTTP status code to smithy ErrorFault
func stof(code int) smithy.ErrorFault {
if code >= 500 {
return smithy.FaultServer
}
return smithy.FaultClient
}
func addProtocolFinalizerMiddlewares(stack *smithymiddleware.Stack, options Options, operation string) error {
if err := stack.Finalize.Add(&resolveAuthSchemeMiddleware{operation: operation, options: options}, smithymiddleware.Before); err != nil {
return fmt.Errorf("add ResolveAuthScheme: %w", err)
}
if err := stack.Finalize.Insert(&getIdentityMiddleware{options: options}, "ResolveAuthScheme", smithymiddleware.After); err != nil {
return fmt.Errorf("add GetIdentity: %w", err)
}
if err := stack.Finalize.Insert(&resolveEndpointV2Middleware{options: options}, "GetIdentity", smithymiddleware.After); err != nil {
return fmt.Errorf("add ResolveEndpointV2: %w", err)
}
if err := stack.Finalize.Insert(&signRequestMiddleware{}, "ResolveEndpointV2", smithymiddleware.After); err != nil {
return fmt.Errorf("add Signing: %w", err)
}
return nil
}
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