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https://github.com/prometheus/node_exporter.git
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501ccf9fb4
* Add --collector.netdev.device-whitelist flag Sometimes it is desired to monitor only one netdev. The golang regexp does not support a negated regex, so the ignored-devices flag is too cumbersome for this task. This change introduces a new flag: accept-devices, which is mutually exclusive to ignored-devices. This flag allows specifying ONLY the netdev you'd like. Signed-off-by: Noam Meltzer <noam@cynerio.co>
73 lines
2.2 KiB
Go
73 lines
2.2 KiB
Go
// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !nonetdev
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package collector
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import (
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"errors"
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"regexp"
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"strconv"
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"github.com/prometheus/common/log"
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)
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/*
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <ifaddrs.h>
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#include <net/if.h>
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*/
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import "C"
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func getNetDevStats(ignore *regexp.Regexp, accept *regexp.Regexp) (map[string]map[string]string, error) {
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netDev := map[string]map[string]string{}
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var ifap, ifa *C.struct_ifaddrs
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if C.getifaddrs(&ifap) == -1 {
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return nil, errors.New("getifaddrs() failed")
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}
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defer C.freeifaddrs(ifap)
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for ifa = ifap; ifa != nil; ifa = ifa.ifa_next {
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if ifa.ifa_addr.sa_family == C.AF_LINK {
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dev := C.GoString(ifa.ifa_name)
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if ignore != nil && ignore.MatchString(dev) {
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log.Debugf("Ignoring device: %s", dev)
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continue
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}
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if accept != nil && !accept.MatchString(dev) {
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log.Debugf("Ignoring device: %s", dev)
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continue
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}
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devStats := map[string]string{}
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data := (*C.struct_if_data)(ifa.ifa_data)
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devStats["receive_packets"] = strconv.Itoa(int(data.ifi_ipackets))
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devStats["transmit_packets"] = strconv.Itoa(int(data.ifi_opackets))
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devStats["receive_errs"] = strconv.Itoa(int(data.ifi_ierrors))
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devStats["transmit_errs"] = strconv.Itoa(int(data.ifi_oerrors))
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devStats["receive_bytes"] = strconv.Itoa(int(data.ifi_ibytes))
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devStats["transmit_bytes"] = strconv.Itoa(int(data.ifi_obytes))
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devStats["receive_multicast"] = strconv.Itoa(int(data.ifi_imcasts))
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devStats["transmit_multicast"] = strconv.Itoa(int(data.ifi_omcasts))
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devStats["receive_drop"] = strconv.Itoa(int(data.ifi_iqdrops))
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netDev[dev] = devStats
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}
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}
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return netDev, nil
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}
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