Alexander
137 lines
3.6 KiB
Go
137 lines
3.6 KiB
Go
package main
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import (
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"context"
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"fmt"
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"io"
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"net/http"
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"os"
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"os/signal"
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"syscall"
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"time"
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"github.com/fujin/anthropic-proxy/internal/auth"
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"github.com/fujin/anthropic-proxy/internal/config"
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"github.com/fujin/anthropic-proxy/internal/logging"
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"github.com/fujin/anthropic-proxy/internal/proxy"
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"github.com/fujin/anthropic-proxy/internal/server"
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"github.com/fujin/anthropic-proxy/internal/telemetry"
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"github.com/rs/zerolog/log"
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)
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func run() error {
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cfg, err := config.Load("config.yaml")
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if err != nil {
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return fmt.Errorf("load config: %w", err)
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}
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// Initialize telemetry (metrics always active; OTLP export when endpoint set)
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telemetryShutdown, logBridge, err := telemetry.Setup(context.Background(), cfg.Telemetry)
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if err != nil {
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return fmt.Errorf("telemetry setup: %w", err)
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}
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defer telemetryShutdown(context.Background())
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var extraWriters []io.Writer
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if logBridge != nil {
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extraWriters = append(extraWriters, logBridge)
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}
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logging.Setup(logging.Config{
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Level: cfg.Logging.Level,
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File: cfg.Logging.File,
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MaxSizeMB: cfg.Logging.MaxSizeMB,
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MaxBackups: cfg.Logging.MaxBackups,
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MaxAgeDays: cfg.Logging.MaxAgeDays,
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Compress: cfg.Logging.Compress,
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}, extraWriters...)
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// Load credentials from ~/.claude/.credentials.json
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creds, err := config.LoadDefaultCredentials()
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if err != nil {
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return fmt.Errorf("load credentials: %w", err)
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}
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var cred *auth.Credential
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if len(creds) > 0 {
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cred = creds[0]
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// If token is expired, try refresh first
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if !cred.ExpiresAt.IsZero() && time.Now().After(cred.ExpiresAt) {
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log.Info().Msg("token expired, attempting refresh")
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refreshCtx, refreshCancel := context.WithTimeout(context.Background(), 15*time.Second)
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refreshErr := auth.RefreshToken(refreshCtx, cred)
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refreshCancel()
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if refreshErr != nil {
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log.Warn().Err(refreshErr).Msg("refresh failed, initiating login")
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cred = nil // fall through to login
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} else {
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log.Info().Msg("token refreshed")
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}
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}
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}
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if cred == nil {
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// Non-TTY check: if stdin is not a terminal, can't do interactive login
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fi, statErr := os.Stdin.Stat()
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if statErr == nil && (fi.Mode()&os.ModeCharDevice) == 0 {
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return fmt.Errorf("no valid credentials found; run the proxy interactively for initial login")
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}
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log.Info().Msg("no credentials found, starting OAuth login")
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cred, err = auth.Login(context.Background())
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if err != nil {
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return fmt.Errorf("login failed: %w", err)
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}
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}
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log.Info().Str("credential", cred.Email).Msg("credential loaded")
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pool := auth.NewPool([]*auth.Credential{cred})
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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pool.RefreshExpiring(context.Background())
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auth.StartBackgroundRefresh(ctx, pool)
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var profile *proxy.SniffedProfile
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if cfg.ClaudeBinary != "" {
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log.Info().Str("binary", cfg.ClaudeBinary).Msg("sniffing claude-code")
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profile, err = proxy.SniffClaudeCode(cfg.ClaudeBinary)
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if err != nil {
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log.Warn().Err(err).Msg("sniff failed, using defaults")
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}
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}
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log.Info().Int("port", cfg.Port).Msg("starting server")
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srv := server.New(cfg, pool, profile)
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quit := make(chan os.Signal, 1)
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signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
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go func() {
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<-quit
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log.Info().Msg("shutting down")
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cancel()
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shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer shutdownCancel()
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if err := srv.Shutdown(shutdownCtx); err != nil {
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log.Error().Err(err).Msg("shutdown error")
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}
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}()
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if err := srv.Start(); err != nil && err != http.ErrServerClosed {
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return err
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}
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return nil
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}
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func main() {
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if err := run(); err != nil {
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log.Error().Err(err).Msg("fatal error")
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os.Exit(1)
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}
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}
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