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Signed-off-by: Nicolas Laduguie <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| // Copyright 2015 The Prometheus Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| //go:build !noudp_drops | ||
| // +build !noudp_drops | ||
|
|
||
| package collector | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "log/slog" | ||
| "os" | ||
|
|
||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/procfs" | ||
| ) | ||
|
|
||
| type ( | ||
| udpDropsCollector struct { | ||
| fs procfs.FS | ||
| desc *prometheus.Desc | ||
| logger *slog.Logger | ||
| } | ||
| ) | ||
|
|
||
| func init() { | ||
| registerCollector("udp_drops", defaultEnabled, NewUDPdropsCollector) | ||
| } | ||
|
|
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| // NewUDPdropsCollector returns a new Collector exposing network udp drops count. | ||
| func NewUDPdropsCollector(logger *slog.Logger) (Collector, error) { | ||
| fs, err := procfs.NewFS(*procPath) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to open procfs: %w", err) | ||
| } | ||
| return &udpDropsCollector{ | ||
| fs: fs, | ||
| desc: prometheus.NewDesc( | ||
| prometheus.BuildFQName(namespace, "udp", "drops_total"), | ||
| "Total number of datagrams dropped.", | ||
| []string{"ip"}, nil, | ||
| ), | ||
| logger: logger, | ||
| }, nil | ||
| } | ||
|
|
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| func (c *udpDropsCollector) Update(ch chan<- prometheus.Metric) error { | ||
|
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| s4, errIPv4 := c.fs.NetUDPSummary() | ||
| if errIPv4 == nil { | ||
| if s4.Drops != nil { | ||
| ch <- prometheus.MustNewConstMetric(c.desc, prometheus.CounterValue, float64(*s4.Drops), "v4") | ||
| } | ||
| } else { | ||
| if errors.Is(errIPv4, os.ErrNotExist) { | ||
| c.logger.Debug("not collecting ipv4 based metrics") | ||
| } else { | ||
| return fmt.Errorf("couldn't get udp drops: %w", errIPv4) | ||
| } | ||
| } | ||
|
|
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| s6, errIPv6 := c.fs.NetUDP6Summary() | ||
| if errIPv6 == nil { | ||
| if s6.Drops != nil { | ||
| ch <- prometheus.MustNewConstMetric(c.desc, prometheus.CounterValue, float64(*s6.Drops), "v6") | ||
| } | ||
| } else { | ||
| if errors.Is(errIPv6, os.ErrNotExist) { | ||
| c.logger.Debug("not collecting ipv6 based metrics") | ||
| } else { | ||
| return fmt.Errorf("couldn't get udp6 drops: %w", errIPv6) | ||
| } | ||
| } | ||
|
|
||
| if errors.Is(errIPv4, os.ErrNotExist) && errors.Is(errIPv6, os.ErrNotExist) { | ||
| return ErrNoData | ||
| } | ||
| return nil | ||
| } |
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