diff options
Diffstat (limited to 'vendor/github.com/prometheus/procfs/net_ip_socket.go')
| -rw-r--r-- | vendor/github.com/prometheus/procfs/net_ip_socket.go | 46 |
1 files changed, 33 insertions, 13 deletions
diff --git a/vendor/github.com/prometheus/procfs/net_ip_socket.go b/vendor/github.com/prometheus/procfs/net_ip_socket.go index 4da81ea57..b70f1fc7a 100644 --- a/vendor/github.com/prometheus/procfs/net_ip_socket.go +++ b/vendor/github.com/prometheus/procfs/net_ip_socket.go @@ -50,10 +50,13 @@ type ( // UsedSockets shows the total number of parsed lines representing the // number of used sockets. UsedSockets uint64 + // Drops shows the total number of dropped packets of all UPD sockets. + Drops *uint64 } // netIPSocketLine represents the fields parsed from a single line // in /proc/net/{t,u}dp{,6}. Fields which are not used by IPSocket are skipped. + // Drops is non-nil for udp{,6}, but nil for tcp{,6}. // For the proc file format details, see https://linux.die.net/man/5/proc. netIPSocketLine struct { Sl uint64 @@ -66,6 +69,7 @@ type ( RxQueue uint64 UID uint64 Inode uint64 + Drops *uint64 } ) @@ -77,13 +81,14 @@ func newNetIPSocket(file string) (NetIPSocket, error) { defer f.Close() var netIPSocket NetIPSocket + isUDP := strings.Contains(file, "udp") lr := io.LimitReader(f, readLimit) s := bufio.NewScanner(lr) s.Scan() // skip first line with headers for s.Scan() { fields := strings.Fields(s.Text()) - line, err := parseNetIPSocketLine(fields) + line, err := parseNetIPSocketLine(fields, isUDP) if err != nil { return nil, err } @@ -104,19 +109,25 @@ func newNetIPSocketSummary(file string) (*NetIPSocketSummary, error) { defer f.Close() var netIPSocketSummary NetIPSocketSummary + var udpPacketDrops uint64 + isUDP := strings.Contains(file, "udp") lr := io.LimitReader(f, readLimit) s := bufio.NewScanner(lr) s.Scan() // skip first line with headers for s.Scan() { fields := strings.Fields(s.Text()) - line, err := parseNetIPSocketLine(fields) + line, err := parseNetIPSocketLine(fields, isUDP) if err != nil { return nil, err } netIPSocketSummary.TxQueueLength += line.TxQueue netIPSocketSummary.RxQueueLength += line.RxQueue netIPSocketSummary.UsedSockets++ + if isUDP { + udpPacketDrops += *line.Drops + netIPSocketSummary.Drops = &udpPacketDrops + } } if err := s.Err(); err != nil { return nil, err @@ -130,7 +141,7 @@ func parseIP(hexIP string) (net.IP, error) { var byteIP []byte byteIP, err := hex.DecodeString(hexIP) if err != nil { - return nil, fmt.Errorf("%s: Cannot parse socket field in %q: %w", ErrFileParse, hexIP, err) + return nil, fmt.Errorf("%w: Cannot parse socket field in %q: %w", ErrFileParse, hexIP, err) } switch len(byteIP) { case 4: @@ -144,12 +155,12 @@ func parseIP(hexIP string) (net.IP, error) { } return i, nil default: - return nil, fmt.Errorf("%s: Unable to parse IP %s: %w", ErrFileParse, hexIP, nil) + return nil, fmt.Errorf("%w: Unable to parse IP %s: %v", ErrFileParse, hexIP, nil) } } // parseNetIPSocketLine parses a single line, represented by a list of fields. -func parseNetIPSocketLine(fields []string) (*netIPSocketLine, error) { +func parseNetIPSocketLine(fields []string, isUDP bool) (*netIPSocketLine, error) { line := &netIPSocketLine{} if len(fields) < 10 { return nil, fmt.Errorf( @@ -167,7 +178,7 @@ func parseNetIPSocketLine(fields []string) (*netIPSocketLine, error) { } if line.Sl, err = strconv.ParseUint(s[0], 0, 64); err != nil { - return nil, fmt.Errorf("%s: Unable to parse sl field in %q: %w", ErrFileParse, line.Sl, err) + return nil, fmt.Errorf("%w: Unable to parse sl field in %q: %w", ErrFileParse, line.Sl, err) } // local_address l := strings.Split(fields[1], ":") @@ -178,7 +189,7 @@ func parseNetIPSocketLine(fields []string) (*netIPSocketLine, error) { return nil, err } if line.LocalPort, err = strconv.ParseUint(l[1], 16, 64); err != nil { - return nil, fmt.Errorf("%s: Unable to parse local_address port value line %q: %w", ErrFileParse, line.LocalPort, err) + return nil, fmt.Errorf("%w: Unable to parse local_address port value line %q: %w", ErrFileParse, line.LocalPort, err) } // remote_address @@ -190,12 +201,12 @@ func parseNetIPSocketLine(fields []string) (*netIPSocketLine, error) { return nil, err } if line.RemPort, err = strconv.ParseUint(r[1], 16, 64); err != nil { - return nil, fmt.Errorf("%s: Cannot parse rem_address port value in %q: %w", ErrFileParse, line.RemPort, err) + return nil, fmt.Errorf("%w: Cannot parse rem_address port value in %q: %w", ErrFileParse, line.RemPort, err) } // st if line.St, err = strconv.ParseUint(fields[3], 16, 64); err != nil { - return nil, fmt.Errorf("%s: Cannot parse st value in %q: %w", ErrFileParse, line.St, err) + return nil, fmt.Errorf("%w: Cannot parse st value in %q: %w", ErrFileParse, line.St, err) } // tx_queue and rx_queue @@ -208,20 +219,29 @@ func parseNetIPSocketLine(fields []string) (*netIPSocketLine, error) { ) } if line.TxQueue, err = strconv.ParseUint(q[0], 16, 64); err != nil { - return nil, fmt.Errorf("%s: Cannot parse tx_queue value in %q: %w", ErrFileParse, line.TxQueue, err) + return nil, fmt.Errorf("%w: Cannot parse tx_queue value in %q: %w", ErrFileParse, line.TxQueue, err) } if line.RxQueue, err = strconv.ParseUint(q[1], 16, 64); err != nil { - return nil, fmt.Errorf("%s: Cannot parse trx_queue value in %q: %w", ErrFileParse, line.RxQueue, err) + return nil, fmt.Errorf("%w: Cannot parse trx_queue value in %q: %w", ErrFileParse, line.RxQueue, err) } // uid if line.UID, err = strconv.ParseUint(fields[7], 0, 64); err != nil { - return nil, fmt.Errorf("%s: Cannot parse UID value in %q: %w", ErrFileParse, line.UID, err) + return nil, fmt.Errorf("%w: Cannot parse UID value in %q: %w", ErrFileParse, line.UID, err) } // inode if line.Inode, err = strconv.ParseUint(fields[9], 0, 64); err != nil { - return nil, fmt.Errorf("%s: Cannot parse inode value in %q: %w", ErrFileParse, line.Inode, err) + return nil, fmt.Errorf("%w: Cannot parse inode value in %q: %w", ErrFileParse, line.Inode, err) + } + + // drops + if isUDP { + drops, err := strconv.ParseUint(fields[12], 0, 64) + if err != nil { + return nil, fmt.Errorf("%w: Cannot parse drops value in %q: %w", ErrFileParse, drops, err) + } + line.Drops = &drops } return line, nil |