go-sdk/mcp/protocol/content.go
Rob Findley 8efb54691d internal/mcp/protocol: move out of mcp/internal, as it's used in the API
The generated protocol package is part of the SDK API, so it shouldn't
be internal.

Change-Id: I5306af48019b1599707b939b348eb6ae4f766ca9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/670356
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
2025-05-06 10:18:38 -07:00

42 lines
1.2 KiB
Go

// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
package protocol
import (
"encoding/json"
"fmt"
)
// Content is the wire format for content, including all fields.
type Content struct {
Type string `json:"type"`
Text string `json:"text,omitempty"`
MIMEType string `json:"mimeType,omitempty"`
Data string `json:"data,omitempty"`
Resource *Resource `json:"resource,omitempty"`
}
// Resource is the wire format for embedded resources, including all fields.
type Resource struct {
URI string `json:"uri,"`
MIMEType string `json:"mimeType,omitempty"`
Text string `json:"text"`
Blob *string `json:"blob"` // blob is a pointer to distinguish empty from missing data
}
func (c *Content) UnmarshalJSON(data []byte) error {
type wireContent Content // for naive unmarshaling
var c2 wireContent
if err := json.Unmarshal(data, &c2); err != nil {
return err
}
switch c2.Type {
case "text", "image", "audio", "resource":
default:
return fmt.Errorf("unrecognized content type %s", c.Type)
}
*c = Content(c2)
return nil
}