91aa109f5b
- Implemented a state management system for handling different streaming chunk types, including stream start, group start, text, thinking, tool calls, metadata, errors, and stream end. - Introduced a new Send method in the context to facilitate message sending to the client. - Enhanced the output package with message sending capabilities, including support for message groups and flushing. - Improved error handling and message ID generation for better streaming reliability and user feedback.
79 lines
1.8 KiB
Go
79 lines
1.8 KiB
Go
package cui
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import (
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"encoding/json"
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"github.com/yaoapp/yao/agent/context"
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"github.com/yaoapp/yao/agent/output/message"
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)
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// Writer implements the message.Writer interface for CUI clients
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type Writer struct {
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ctx *context.Context
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adapter *Adapter
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}
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// NewWriter creates a new CUI writer
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func NewWriter(ctx *context.Context) (*Writer, error) {
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return &Writer{
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ctx: ctx,
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adapter: NewAdapter(),
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}, nil
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}
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// Write writes a single message to the output stream
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func (w *Writer) Write(msg *message.Message) error {
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// CUI adapter passes messages through as-is
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chunks, err := w.adapter.Adapt(msg)
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if err != nil {
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return err
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}
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// Send each chunk
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for _, chunk := range chunks {
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if err := w.sendChunk(chunk); err != nil {
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return err
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}
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}
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return nil
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}
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// WriteGroup writes a message group to the output stream
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func (w *Writer) WriteGroup(group *message.MessageGroup) error {
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// For CUI, we send a group start message, all messages, then a group end message
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// The group structure itself is also sent for clients that want it
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// Send the group
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if err := w.sendChunk(group); err != nil {
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return err
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}
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return nil
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}
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// Flush flushes any buffered data to the output stream
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func (w *Writer) Flush() error {
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// For SSE, we don't need explicit flushing
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// The underlying connection handles it
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return nil
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}
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// Close closes the writer and cleans up resources
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func (w *Writer) Close() error {
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// Nothing to clean up for CUI writer
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return nil
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}
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// sendChunk sends a chunk to the output stream
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func (w *Writer) sendChunk(chunk interface{}) error {
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// Convert chunk to JSON
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data, err := json.Marshal(chunk)
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if err != nil {
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return err
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}
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// Send via context's writer
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// The context knows how to send data based on the connection type (SSE, WebSocket, etc.)
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return w.ctx.Send(data)
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}
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