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// Code generated by smithy-go-codegen DO NOT EDIT.
package appsync
import (
"context"
"fmt"
awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
"github.com/aws/aws-sdk-go-v2/service/appsync/types"
"github.com/aws/smithy-go/middleware"
smithyhttp "github.com/aws/smithy-go/transport/http"
)
// Evaluates a given template and returns the response. The mapping template can
// be a request or response template.
//
// Request templates take the incoming request after a GraphQL operation is parsed
// and convert it into a request configuration for the selected data source
// operation. Response templates interpret responses from the data source and map
// it to the shape of the GraphQL field output type.
//
// Mapping templates are written in the Apache Velocity Template Language (VTL).
func (c *Client) EvaluateMappingTemplate(ctx context.Context, params *EvaluateMappingTemplateInput, optFns ...func(*Options)) (*EvaluateMappingTemplateOutput, error) {
if params == nil {
params = &EvaluateMappingTemplateInput{}
}
result, metadata, err := c.invokeOperation(ctx, "EvaluateMappingTemplate", params, optFns, c.addOperationEvaluateMappingTemplateMiddlewares)
if err != nil {
return nil, err
}
out := result.(*EvaluateMappingTemplateOutput)
out.ResultMetadata = metadata
return out, nil
}
type EvaluateMappingTemplateInput struct {
// The map that holds all of the contextual information for your resolver
// invocation. A context is required for this action.
//
// This member is required.
Context *string
// The mapping template; this can be a request or response template. A template is
// required for this action.
//
// This member is required.
Template *string
noSmithyDocumentSerde
}
type EvaluateMappingTemplateOutput struct {
// The ErrorDetail object.
Error *types.ErrorDetail
// The mapping template; this can be a request or response template.
EvaluationResult *string
// A list of logs that were generated by calls to util.log.info and util.log.error
// in the evaluated code.
Logs []string
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationEvaluateMappingTemplateMiddlewares(stack *middleware.Stack, options Options) (err error) {
if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
return err
}
err = stack.Serialize.Add(&awsRestjson1_serializeOpEvaluateMappingTemplate{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsRestjson1_deserializeOpEvaluateMappingTemplate{}, middleware.After)
if err != nil {
return err
}
if err := addProtocolFinalizerMiddlewares(stack, options, "EvaluateMappingTemplate"); err != nil {
return fmt.Errorf("add protocol finalizers: %v", err)
}
if err = addlegacyEndpointContextSetter(stack, options); err != nil {
return err
}
if err = addSetLoggerMiddleware(stack, options); err != nil {
return err
}
if err = addClientRequestID(stack); err != nil {
return err
}
if err = addComputeContentLength(stack); err != nil {
return err
}
if err = addResolveEndpointMiddleware(stack, options); err != nil {
return err
}
if err = addComputePayloadSHA256(stack); err != nil {
return err
}
if err = addRetry(stack, options); err != nil {
return err
}
if err = addRawResponseToMetadata(stack); err != nil {
return err
}
if err = addRecordResponseTiming(stack); err != nil {
return err
}
if err = addClientUserAgent(stack, options); err != nil {
return err
}
if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
return err
}
if err = addTimeOffsetBuild(stack, c); err != nil {
return err
}
if err = addUserAgentRetryMode(stack, options); err != nil {
return err
}
if err = addOpEvaluateMappingTemplateValidationMiddleware(stack); err != nil {
return err
}
if err = stack.Initialize.Add(newServiceMetadataMiddleware_opEvaluateMappingTemplate(options.Region), middleware.Before); err != nil {
return err
}
if err = addRecursionDetection(stack); err != nil {
return err
}
if err = addRequestIDRetrieverMiddleware(stack); err != nil {
return err
}
if err = addResponseErrorMiddleware(stack); err != nil {
return err
}
if err = addRequestResponseLogging(stack, options); err != nil {
return err
}
if err = addDisableHTTPSMiddleware(stack, options); err != nil {
return err
}
return nil
}
func newServiceMetadataMiddleware_opEvaluateMappingTemplate(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
OperationName: "EvaluateMappingTemplate",
}
}
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