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p2p: fix dial metrics not picking up the right error #31621

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Merged
merged 10 commits into from
Apr 15, 2025
Merged

p2p: fix dial metrics not picking up the right error #31621

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f5e0ead
fix dial metrics not picking up the right error
cskiraly Apr 12, 2025
f202047
p2p: wrap internal error in new error type
cskiraly Apr 14, 2025
6635c0f
Update server.go
fjl Apr 14, 2025
3596026
Update metrics.go
fjl Apr 14, 2025
fd020d9
Update server.go
fjl Apr 14, 2025
7e1e26c
p2p: add catchall dialOtherError meter
cskiraly Apr 14, 2025
b7626f0
p2p: list underlying errors for some meters
cskiraly Apr 15, 2025
f724db5
fixing TestServerSetupConn
cskiraly Apr 15, 2025
071d9a4
better comments
cskiraly Apr 15, 2025
d2fce76
p2p: update
fjl Apr 15, 2025
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p2p: wrap internal error in new error type 
Signed-off-by: Csaba Kiraly <[email protected]>
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@cskiraly
cskiraly committed Apr 14, 2025
commit f2020470f26b09c3d022b88e75fe6a97519c3a5e
3 changes: 2 additions & 1 deletion p2p/metrics.go
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Original file line number Diff line number Diff line change
Expand Up @@ -68,6 +68,7 @@ func markDialError(err error) {
return
}

var e *protoHandshakeError
switch {
case errors.Is(err, DiscTooManyPeers):
dialTooManyPeers.Mark(1)
Expand All @@ -81,7 +82,7 @@ func markDialError(err error) {
dialUnexpectedIdentity.Mark(1)
case errors.Is(err, errEncHandshakeError):
dialEncHandshakeError.Mark(1)
case errors.Is(err, errProtoHandshakeError):
case errors.As(err, &e):
dialProtoHandshakeError.Mark(1)
}
}
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12 changes: 8 additions & 4 deletions p2p/server.go
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Original file line number Diff line number Diff line change
Expand Up @@ -66,11 +66,15 @@ const (
)

var (
errServerStopped = errors.New("server stopped")
errEncHandshakeError = errors.New("rlpx enc error")
errProtoHandshakeError = errors.New("rlpx proto error")
errServerStopped = errors.New("server stopped")
errEncHandshakeError = errors.New("rlpx enc error")
)

type protoHandshakeError struct{ err error }

func (e *protoHandshakeError) Error() string { return fmt.Sprintf("rlpx proto error: %s", e.err) }
func (e *protoHandshakeError) Unwrap() error { return e.err }

// Server manages all peer connections.
type Server struct {
// Config fields may not be modified while the server is running.
Expand Down Expand Up @@ -908,7 +912,7 @@ func (srv *Server) setupConn(c *conn, dialDest *enode.Node) error {
if err != nil {
clog.Trace("Failed p2p handshake", "err", err)
//Wrapping both errors for later inspection
return fmt.Errorf("%w: %w", errProtoHandshakeError, err)
return &protoHandshakeError{err: err}
}
if id := c.node.ID(); !bytes.Equal(crypto.Keccak256(phs.ID), id[:]) {
clog.Trace("Wrong devp2p handshake identity", "phsid", hex.EncodeToString(phs.ID))
Expand Down
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