rdev/internal/handlers/projects_stream.go
jordan 39df51defd feat: Add multi-provider code agent interface with Claude Code and OpenCode adapters
Implements weeks 1-4 of the multi-provider architecture:

Week 1 - Foundation:
- Add domain models (AgentProvider, AgentRequest, AgentEvent, AgentResult)
- Define CodeAgent port interface with Execute, Cancel, Capabilities
- Create thread-safe provider registry with first-registered default

Week 2 - Claude Code Adapter:
- Extract kubectl exec logic into CodeAgent implementation
- Parse stream-json output format (init, message, tool_use, result)
- Support session continuation via --resume flag

Week 3 - OpenCode Adapter:
- HTTP/SSE client for opencode serve API
- Session management (create, send message, abort)
- Event streaming with documented buffer rationale

Week 4 - Quality & Polish:
- Fix race condition in OpenCode Cancel method
- Add AgentRequest.Validate() with ErrPromptRequired, ErrInvalidTimeout
- Document DefaultAvailabilityTimeout constants
- Add HTTP error context for debugging

Also includes:
- Work queue system with PostgreSQL adapter
- Credential store for infrastructure secrets
- Project templates with Woodpecker CI integration
- Comprehensive test coverage

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-27 09:25:51 -07:00

89 lines
1.9 KiB
Go

// Package handlers provides HTTP handlers for the rdev API.
package handlers
import (
"encoding/json"
"fmt"
"net/http"
"sync"
)
// streamManager manages SSE event streams.
type streamManager struct {
mu sync.RWMutex
streams map[string][]chan streamEvent
}
type streamEvent struct {
Type string
Data map[string]any
}
func newStreamManager() *streamManager {
return &streamManager{
streams: make(map[string][]chan streamEvent),
}
}
func (sm *streamManager) Subscribe(streamID string) chan streamEvent {
sm.mu.Lock()
defer sm.mu.Unlock()
ch := make(chan streamEvent, 100)
sm.streams[streamID] = append(sm.streams[streamID], ch)
return ch
}
func (sm *streamManager) Unsubscribe(streamID string, ch chan streamEvent) {
sm.mu.Lock()
defer sm.mu.Unlock()
channels := sm.streams[streamID]
for i, c := range channels {
if c == ch {
sm.streams[streamID] = append(channels[:i], channels[i+1:]...)
close(ch)
break
}
}
}
func (sm *streamManager) Send(streamID, eventType string, data map[string]any) {
sm.mu.RLock()
defer sm.mu.RUnlock()
for _, ch := range sm.streams[streamID] {
select {
case ch <- streamEvent{Type: eventType, Data: data}:
default:
// Channel full, skip
}
}
}
func (sm *streamManager) Close(streamID string) {
sm.mu.Lock()
defer sm.mu.Unlock()
for _, ch := range sm.streams[streamID] {
close(ch)
}
delete(sm.streams, streamID)
}
// writeSSE writes a Server-Sent Event.
func writeSSE(w http.ResponseWriter, flusher http.Flusher, event string, data map[string]any) {
writeSSEWithID(w, flusher, "", event, data)
}
// writeSSEWithID writes a Server-Sent Event with an optional event ID.
func writeSSEWithID(w http.ResponseWriter, flusher http.Flusher, id, event string, data map[string]any) {
dataBytes, _ := json.Marshal(data)
if id != "" {
_, _ = fmt.Fprintf(w, "id: %s\n", id)
}
_, _ = fmt.Fprintf(w, "event: %s\n", event)
_, _ = fmt.Fprintf(w, "data: %s\n\n", dataBytes)
flusher.Flush()
}