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// Package jsonrpc provides JSON RPC utilities for serialization of AWS
// requests and responses.
package jsonrpc
//go:generate go run -tags codegen ../../../private/model/cli/gen-protocol-tests ../../../models/protocol_tests/input/json.json build_test.go
//go:generate go run -tags codegen ../../../private/model/cli/gen-protocol-tests ../../../models/protocol_tests/output/json.json unmarshal_test.go
import (
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/private/protocol/json/jsonutil"
"github.com/aws/aws-sdk-go/private/protocol/rest"
)
var emptyJSON = []byte("{}")
// BuildHandler is a named request handler for building jsonrpc protocol
// requests
var BuildHandler = request.NamedHandler{
Name: "awssdk.jsonrpc.Build",
Fn: Build,
}
// UnmarshalHandler is a named request handler for unmarshaling jsonrpc
// protocol requests
var UnmarshalHandler = request.NamedHandler{
Name: "awssdk.jsonrpc.Unmarshal",
Fn: Unmarshal,
}
// UnmarshalMetaHandler is a named request handler for unmarshaling jsonrpc
// protocol request metadata
var UnmarshalMetaHandler = request.NamedHandler{
Name: "awssdk.jsonrpc.UnmarshalMeta",
Fn: UnmarshalMeta,
}
// Build builds a JSON payload for a JSON RPC request.
func Build(req *request.Request) {
var buf []byte
var err error
if req.ParamsFilled() {
buf, err = jsonutil.BuildJSON(req.Params)
if err != nil {
req.Error = awserr.New(request.ErrCodeSerialization, "failed encoding JSON RPC request", err)
return
}
} else {
buf = emptyJSON
}
// Always serialize the body, don't suppress it.
req.SetBufferBody(buf)
if req.ClientInfo.TargetPrefix != "" {
target := req.ClientInfo.TargetPrefix + "." + req.Operation.Name
req.HTTPRequest.Header.Add("X-Amz-Target", target)
}
// Only set the content type if one is not already specified and an
// JSONVersion is specified.
if ct, v := req.HTTPRequest.Header.Get("Content-Type"), req.ClientInfo.JSONVersion; len(ct) == 0 && len(v) != 0 {
jsonVersion := req.ClientInfo.JSONVersion
req.HTTPRequest.Header.Set("Content-Type", "application/x-amz-json-"+jsonVersion)
}
}
// Unmarshal unmarshals a response for a JSON RPC service.
func Unmarshal(req *request.Request) {
defer req.HTTPResponse.Body.Close()
if req.DataFilled() {
err := jsonutil.UnmarshalJSON(req.Data, req.HTTPResponse.Body)
if err != nil {
req.Error = awserr.NewRequestFailure(
awserr.New(request.ErrCodeSerialization, "failed decoding JSON RPC response", err),
req.HTTPResponse.StatusCode,
req.RequestID,
)
}
}
return
}
// UnmarshalMeta unmarshals headers from a response for a JSON RPC service.
func UnmarshalMeta(req *request.Request) {
rest.UnmarshalMeta(req)
}
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