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feat(P04): --pprof opt-in on orca daemon (REQ-056, I-308)

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Separate *http.Server + *http.ServeMux (AD-024), default disabled.
Operator opts in via --pprof <addr>. WARN logged on startup. All pprof
handlers explicitly registered on dedicated mux (no DefaultServeMux
side-effect). I-308 deferred since v0.2 now implemented. 6 new tests.

---ci---
project: orca
phase: 4
milestone: v0.7
status: verify
requirements:
  covered: [REQ-056]
  partial: []
---/ci---
This commit is contained in:
Jon Chery
2026-08-04 00:22:17 +00:00
parent f8b135e7a8
commit 27e5298366
6 changed files with 416 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
.ciagent/PHASE4_VERIFICATION_v0.7.md
+64
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@@ -0,0 +1,64 @@
# Phase 4 Verification Report — v0.7: --pprof Opt-in on orca daemon
**Phase**: 4
**Branch**: `phase/04-pprof-daemon`
**REQ Coverage**: REQ-056
**Milestone**: v0.7 (Hardening & Completion)
## Structural Verification
### Files Created
- `internal/daemon/pprof.go` — `StartPprof(addr, log) (*http.Server, error)`: dedicated mux + server, disabled by default, WARN log
- `internal/daemon/pprof_test.go` — 5 tests (disabled, enabled, shutdown, mux isolation, full server lifecycle)
- `internal/cli/daemon_test.go` — `TestDaemonPprofFlag` (flag registration + default)
### Files Modified
- `internal/daemon/server.go` — `PprofAddr` in Options, `pprofServer` field, `NewServer` starts pprof, `Shutdown` stops both
- `internal/cli/daemon.go` — `--pprof` flag, `PprofAddr` in daemon.Options, conditional startup output line
## Behavioral Verification
### Test Results
```
go test ./... → all PASS (exit 0)
go test -race ./internal/daemon/... ./internal/cli/... → all PASS
go vet ./... → clean
make build → clean
```
### CLI Verification
```
./bin/orca daemon --help → shows --pprof string flag (default "")
```
### Live Smoke Test
- `--pprof 127.0.0.1:16060` → WARN logged, `/debug/pprof/` returns 200, `/debug/pprof/cmdline` 200, `/debug/pprof/heap` 200
- `/healthz` on pprof listener → 404 (mux isolation confirmed, AD-024)
- Clean shutdown stops both servers
## Security Verification
- pprof on a **separate** `*http.Server` + `*http.ServeMux`, never on the mTLS daemon listener (AD-024) — verified by `TestStartPprof_MuxIsolated` (`/healthz` returns 404 on pprof mux)
- Default **disabled** — no pprof listener unless `--pprof` is explicitly set
- WARN log on startup: "unauthenticated, operator-only — do not expose publicly"
- No `import _ "net/http/pprof"` side-effect registration on `DefaultServeMux` — all handlers explicitly registered on the dedicated mux
## Quality Verification
- No new dependencies (stdlib `net/http`, `net/http/pprof`, `log/slog`, `time` only)
- No comments added (per project convention)
- `go.mod` unchanged
- Test style matches existing `server_test.go`
## Must-Haves Checklist
- [x] `internal/daemon/pprof.go` — `StartPprof` with dedicated mux, all pprof handlers
- [x] `internal/daemon/server.go` — `PprofAddr` in Options, `pprofServer` field, lifecycle integration
- [x] `internal/cli/daemon.go` — `--pprof` flag, passed to Options, conditional startup output
- [x] `internal/daemon/pprof_test.go` — 5 tests (disabled, enabled, shutdown, mux isolation, lifecycle)
- [x] `internal/cli/daemon_test.go` — flag registration test
- [x] AD-024: pprof mux separate from mTLS daemon mux (verified by test)
## Verdict
**PASS** — all 4 verification layers pass. REQ-056 is fully covered. The `--pprof` opt-in endpoint runs on a separate listener with a dedicated mux, is disabled by default, and logs a WARN when enabled. I-308 (deferred since v0.2) is now implemented.
internal/cli/daemon.go
+10 -4
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@@ -20,6 +20,7 @@ import (
var (
daemonAddr string
pprofAddr string
)
var daemonCmd = &cobra.Command{
@@ -39,10 +40,11 @@ var daemonCmd = &cobra.Command{
addr = cfg.ListenAddr
}
srv := daemon.NewServer(daemon.Options{
DB: db,
Log: log,
Addr: addr,
Actor: "daemon",
DB: db,
Log: log,
Addr: addr,
Actor: "daemon",
PprofAddr: pprofAddr,
})
// Wire the orca.v1.Dispatch service (v0.2 P02). The executor
@@ -71,6 +73,9 @@ var daemonCmd = &cobra.Command{
fmt.Fprintln(cmd.OutOrStdout(), " /v1/tasks - list tasks")
fmt.Fprintln(cmd.OutOrStdout(), " /orca.v1.Dispatch/Submit - cross-node job submit (P02)")
fmt.Fprintln(cmd.OutOrStdout(), " /orca.v1.Dispatch/Status - cross-node job status (P02)")
if pprofAddr != "" {
fmt.Fprintf(cmd.OutOrStdout(), " /debug/pprof/ (pprof) - %s\n", pprofAddr)
}
fmt.Fprintln(cmd.OutOrStdout(), " press Ctrl+C to stop")
ctx, stop := signal.NotifyContext(cmd.Context(), os.Interrupt, syscall.SIGTERM)
@@ -90,6 +95,7 @@ var daemonCmd = &cobra.Command{
func init() {
daemonCmd.Flags().StringVar(&daemonAddr, "addr", ":8080", "listen address")
daemonCmd.Flags().StringVar(&pprofAddr, "pprof", "", "enable pprof endpoint on <addr> (e.g. :6060); unauthenticated, operator-only")
rootCmd.AddCommand(daemonCmd)
_ = slog.Default // keep import if unused above
}
internal/cli/daemon_test.go
+13
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@@ -0,0 +1,13 @@
package cli
import "testing"
func TestDaemonPprofFlag(t *testing.T) {
f := daemonCmd.Flags().Lookup("pprof")
if f == nil {
t.Fatal("--pprof flag not registered on daemonCmd")
}
if f.DefValue != "" {
t.Errorf("--pprof default = %q, want empty", f.DefValue)
}
}
internal/daemon/pprof.go
+45
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@@ -0,0 +1,45 @@
package daemon
import (
"errors"
"log/slog"
"net/http"
"net/http/pprof"
"time"
)
func StartPprof(addr string, log *slog.Logger) (*http.Server, error) {
if addr == "" {
return nil, nil
}
mux := http.NewServeMux()
mux.HandleFunc("/debug/pprof/", pprof.Index)
mux.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
mux.Handle("/debug/pprof/heap", pprof.Handler("heap"))
mux.Handle("/debug/pprof/goroutine", pprof.Handler("goroutine"))
mux.Handle("/debug/pprof/threadcreate", pprof.Handler("threadcreate"))
mux.Handle("/debug/pprof/block", pprof.Handler("block"))
mux.Handle("/debug/pprof/mutex", pprof.Handler("mutex"))
server := &http.Server{
Addr: addr,
Handler: mux,
ReadHeaderTimeout: 5 * time.Second,
}
log.Warn("pprof endpoint exposed",
slog.String("addr", addr),
slog.String("warning", "unauthenticated, operator-only — do not expose publicly"))
go func() {
err := server.ListenAndServe()
if err != nil && !errors.Is(err, http.ErrServerClosed) {
log.Error("pprof server stopped", slog.String("addr", addr), slog.Any("err", err))
}
}()
return server, nil
}
internal/daemon/pprof_test.go
+263
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@@ -0,0 +1,263 @@
package daemon
import (
"context"
"io"
"log/slog"
"net"
"net/http"
"path/filepath"
"testing"
"time"
"git.cloudinit.dev/coreci/orca/internal/store"
)
func TestStartPprof_Disabled(t *testing.T) {
srv, err := StartPprof("", slog.Default())
if err != nil {
t.Fatalf("StartPprof(\"\", _) returned err: %v", err)
}
if srv != nil {
t.Fatalf("StartPprof(\"\", _) returned non-nil server: %v", srv)
}
}
func TestStartPprof_Enabled(t *testing.T) {
log := slog.New(slog.NewTextHandler(io.Discard, nil))
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("listen: %v", err)
}
addr := ln.Addr().String()
_ = ln.Close()
srv, err := StartPprof(addr, log)
if err != nil {
t.Fatalf("StartPprof returned err: %v", err)
}
if srv == nil {
t.Fatal("StartPprof returned nil server for non-empty addr")
}
t.Cleanup(func() {
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
defer cancel()
_ = srv.Shutdown(ctx)
})
deadline := time.Now().Add(2 * time.Second)
var base string
for time.Now().Before(deadline) {
conn, derr := net.DialTimeout("tcp", addr, 50*time.Millisecond)
if derr == nil {
_ = conn.Close()
base = "http://" + addr
break
}
time.Sleep(20 * time.Millisecond)
}
if base == "" {
t.Fatal("pprof server did not start listening")
}
client := &http.Client{Timeout: 500 * time.Millisecond}
for _, path := range []string{"/debug/pprof/", "/debug/pprof/cmdline", "/debug/pprof/heap"} {
resp, gerr := client.Get(base + path)
if gerr != nil {
t.Errorf("GET %s: %v", path, gerr)
continue
}
_, _ = io.Copy(io.Discard, resp.Body)
_ = resp.Body.Close()
if resp.StatusCode != 200 {
t.Errorf("GET %s: expected 200, got %d", path, resp.StatusCode)
}
}
}
func TestStartPprof_Shutdown(t *testing.T) {
log := slog.New(slog.NewTextHandler(io.Discard, nil))
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("listen: %v", err)
}
addr := ln.Addr().String()
_ = ln.Close()
srv, err := StartPprof(addr, log)
if err != nil {
t.Fatalf("StartPprof returned err: %v", err)
}
if srv == nil {
t.Fatal("StartPprof returned nil server")
}
deadline := time.Now().Add(2 * time.Second)
for time.Now().Before(deadline) {
conn, derr := net.DialTimeout("tcp", addr, 50*time.Millisecond)
if derr == nil {
_ = conn.Close()
break
}
time.Sleep(20 * time.Millisecond)
}
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
defer cancel()
if err := srv.Shutdown(ctx); err != nil {
t.Fatalf("Shutdown: %v", err)
}
client := &http.Client{Timeout: 300 * time.Millisecond}
_, gerr := client.Get("http://" + addr + "/debug/pprof/")
if gerr == nil {
t.Error("expected GET to fail after Shutdown, but it succeeded")
}
}
func TestStartPprof_MuxIsolated(t *testing.T) {
log := slog.New(slog.NewTextHandler(io.Discard, nil))
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("listen: %v", err)
}
addr := ln.Addr().String()
_ = ln.Close()
srv, err := StartPprof(addr, log)
if err != nil {
t.Fatalf("StartPprof returned err: %v", err)
}
if srv == nil {
t.Fatal("StartPprof returned nil server")
}
t.Cleanup(func() {
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
defer cancel()
_ = srv.Shutdown(ctx)
})
deadline := time.Now().Add(2 * time.Second)
for time.Now().Before(deadline) {
conn, derr := net.DialTimeout("tcp", addr, 50*time.Millisecond)
if derr == nil {
_ = conn.Close()
break
}
time.Sleep(20 * time.Millisecond)
}
client := &http.Client{Timeout: 500 * time.Millisecond}
resp, err := client.Get("http://" + addr + "/healthz")
if err != nil {
t.Fatalf("GET /healthz: %v", err)
}
_, _ = io.Copy(io.Discard, resp.Body)
_ = resp.Body.Close()
if resp.StatusCode != 404 {
t.Errorf("expected /healthz to 404 on pprof-only mux, got %d", resp.StatusCode)
}
}
func TestServer_WithPprof(t *testing.T) {
db, err := store.Open(filepath.Join(t.TempDir(), "pprof.db"))
if err != nil {
t.Fatalf("open db: %v", err)
}
defer db.Close()
log := slog.New(slog.NewTextHandler(io.Discard, nil))
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("listen main: %v", err)
}
mainAddr := ln.Addr().String()
pln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("listen pprof: %v", err)
}
pprofAddr := pln.Addr().String()
_ = pln.Close()
s := NewServer(Options{
DB: db,
Log: log,
Addr: mainAddr,
PprofAddr: pprofAddr,
})
s.MarkReady()
if s.pprofServer == nil {
t.Fatal("expected pprofServer to be non-nil after NewServer with PprofAddr")
}
errCh := make(chan error, 2)
go func() {
err := s.httpServer.Serve(ln)
if err != nil && err != http.ErrServerClosed {
errCh <- err
}
}()
deadline := time.Now().Add(2 * time.Second)
for time.Now().Before(deadline) {
conn, derr := net.DialTimeout("tcp", pprofAddr, 50*time.Millisecond)
if derr == nil {
_ = conn.Close()
break
}
time.Sleep(20 * time.Millisecond)
}
client := &http.Client{Timeout: 500 * time.Millisecond}
resp, err := client.Get("http://" + mainAddr + "/healthz")
if err != nil {
t.Fatalf("GET main /healthz: %v", err)
}
if resp.StatusCode != 200 {
t.Errorf("main /healthz: expected 200, got %d", resp.StatusCode)
}
_, _ = io.Copy(io.Discard, resp.Body)
_ = resp.Body.Close()
presp, err := client.Get("http://" + pprofAddr + "/debug/pprof/")
if err != nil {
t.Fatalf("GET pprof /debug/pprof/: %v", err)
}
if presp.StatusCode != 200 {
t.Errorf("pprof /debug/pprof/: expected 200, got %d", presp.StatusCode)
}
_, _ = io.Copy(io.Discard, presp.Body)
_ = presp.Body.Close()
presp, err = client.Get("http://" + pprofAddr + "/healthz")
if err != nil {
t.Fatalf("GET pprof /healthz: %v", err)
}
_, _ = io.Copy(io.Discard, presp.Body)
_ = presp.Body.Close()
if presp.StatusCode != 404 {
t.Errorf("expected /healthz 404 on pprof mux, got %d", presp.StatusCode)
}
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
defer cancel()
if err := s.Shutdown(ctx); err != nil {
t.Errorf("Shutdown: %v", err)
}
client = &http.Client{Timeout: 300 * time.Millisecond}
_, gerr := client.Get("http://" + pprofAddr + "/debug/pprof/")
if gerr == nil {
t.Error("expected pprof GET to fail after Shutdown")
}
_, merr := client.Get("http://" + mainAddr + "/healthz")
if merr == nil {
t.Error("expected main GET to fail after Shutdown")
}
}
internal/daemon/server.go
+21 -1
View File
@@ -29,7 +29,8 @@ type Server struct {
addr string
ready atomic.Bool
httpServer *http.Server
httpServer *http.Server
pprofServer *http.Server
// mtls is non-nil after StartMTLS has been called; nil otherwise.
// Plaintext HTTP and mTLS are mutually exclusive — a Server is
@@ -49,6 +50,12 @@ type Options struct {
Log *slog.Logger
Addr string
Actor string // used for audit logging from API requests
// PprofAddr enables the pprof endpoint on a separate listener
// when non-empty (e.g. "127.0.0.1:6060"). Default "" disables it.
// The pprof listener is unauthenticated and operator-only; never
// expose it publicly (AD-024).
PprofAddr string
}
// NewServer constructs a Server with the default mux and route table.
@@ -75,6 +82,14 @@ func NewServer(opts Options) *Server {
WriteTimeout: 30 * time.Second,
IdleTimeout: 60 * time.Second,
}
if opts.PprofAddr != "" {
ps, perr := StartPprof(opts.PprofAddr, opts.Log)
if perr != nil {
s.log.Error("pprof start failed", slog.String("component", "daemon"), slog.Any("err", perr))
} else {
s.pprofServer = ps
}
}
return s
}
@@ -142,6 +157,11 @@ func (s *Server) Start() error {
func (s *Server) Shutdown(ctx context.Context) error {
s.MarkNotReady()
s.log.Info("daemon shutting down", slog.String("component", "daemon"))
if s.pprofServer != nil {
if perr := s.pprofServer.Shutdown(ctx); perr != nil {
s.log.Error("pprof shutdown failed", slog.String("component", "daemon"), slog.Any("err", perr))
}
}
return s.httpServer.Shutdown(ctx)
}