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ipn/ipnlocal: add some verbose logging to taildrive peerapi handler

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Updates tailscale/corp#29702

Signed-off-by: Percy Wegmann <percy@tailscale.com>
This commit is contained in:
Percy Wegmann 2025-06-17 13:38:17 -05:00 committed by Percy Wegmann
parent 939355f667
commit 4431fb89c2
1 changed files with 21 additions and 14 deletions
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35
ipn/ipnlocal/peerapi.go
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@ -247,6 +247,10 @@ func (h *peerAPIHandler) logf(format string, a ...any) {
h.ps.b.logf("peerapi: "+format, a...)
}
func (h *peerAPIHandler) logfv1(format string, a ...any) {
h.ps.b.logf("[v1] peerapi: "+format, a...)
}
// isAddressValid reports whether addr is a valid destination address for this
// node originating from the peer.
func (h *peerAPIHandler) isAddressValid(addr netip.Addr) bool {
@ -1015,6 +1019,7 @@ func (rbw *requestBodyWrapper) Read(b []byte) (int, error) {
}
func (h *peerAPIHandler) handleServeDrive(w http.ResponseWriter, r *http.Request) {
h.logfv1("taildrive: got %s request from %s", r.Method, h.peerNode.Key().ShortString())
if !h.ps.b.DriveSharingEnabled() {
h.logf("taildrive: not enabled")
http.Error(w, "taildrive not enabled", http.StatusNotFound)
@ -1055,21 +1060,23 @@ func (h *peerAPIHandler) handleServeDrive(w http.ResponseWriter, r *http.Request
}
r.Body = bw
if r.Method == httpm.PUT || r.Method == httpm.GET {
defer func() {
switch wr.statusCode {
case 304:
// 304s are particularly chatty so skip logging.
default:
contentType := "unknown"
if ct := wr.Header().Get("Content-Type"); ct != "" {
contentType = ct
}
h.logf("taildrive: share: %s from %s to %s: status-code=%d ext=%q content-type=%q tx=%.f rx=%.f", r.Method, h.peerNode.Key().ShortString(), h.selfNode.Key().ShortString(), wr.statusCode, parseDriveFileExtensionForLog(r.URL.Path), contentType, roundTraffic(wr.contentLength), roundTraffic(bw.bytesRead))
defer func() {
switch wr.statusCode {
case 304:
// 304s are particularly chatty so skip logging.
default:
log := h.logf
if r.Method != httpm.PUT && r.Method != httpm.GET {
log = h.logfv1
}
}()
}
contentType := "unknown"
if ct := wr.Header().Get("Content-Type"); ct != "" {
contentType = ct
}
log("taildrive: share: %s from %s to %s: status-code=%d ext=%q content-type=%q tx=%.f rx=%.f", r.Method, h.peerNode.Key().ShortString(), h.selfNode.Key().ShortString(), wr.statusCode, parseDriveFileExtensionForLog(r.URL.Path), contentType, roundTraffic(wr.contentLength), roundTraffic(bw.bytesRead))
}
}()
r.URL.Path = strings.TrimPrefix(r.URL.Path, taildrivePrefix)
fs.ServeHTTPWithPerms(p, wr, r)