forked from ccfos/huatuo
104 lines
2.6 KiB
Go
104 lines
2.6 KiB
Go
// Copyright 2025 The HuaTuo Authors
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//
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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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package collector
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import (
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"fmt"
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"huatuo-bamai/internal/log"
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"huatuo-bamai/pkg/metric"
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"huatuo-bamai/pkg/tracing"
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"github.com/prometheus/procfs"
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)
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const (
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skMemQuantum = 4096
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)
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type tcpMemCollector struct {
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tcpMemMetric []*metric.Data
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}
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func init() {
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tracing.RegisterEventTracing("tcp_mem", newTCPMemCollector)
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}
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func newTCPMemCollector() (*tracing.EventTracingAttr, error) {
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return &tracing.EventTracingAttr{
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TracingData: &tcpMemCollector{
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tcpMemMetric: []*metric.Data{
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metric.NewGaugeData("usage_pages", 0, "tcp mem usage(pages)", nil),
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metric.NewGaugeData("usage_bytes", 0, "tcp mem usage(bytes)", nil),
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metric.NewGaugeData("limit_pages", 0, "tcp mem limit(pages)", nil),
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metric.NewGaugeData("usage_percent", 0, "tcp mem usage percent", nil),
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},
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},
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Flag: tracing.FlagMetric,
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}, nil
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}
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func (c *tcpMemCollector) getTCPMem() (tcpMem, tcpMemBytes, tcpMemLimit float64, err error) {
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fs, err := procfs.NewDefaultFS()
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if err != nil {
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log.Infof("failed to open sysfs: %v", err)
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return -1, -1, -1, err
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}
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values, err := fs.SysctlInts("net.ipv4.tcp_mem")
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if err != nil {
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log.Infof("error obtaining sysctl info: %v", err)
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return -1, -1, -1, err
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}
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tcpMemLimit = float64(values[2])
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stat4, err := fs.NetSockstat()
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if err != nil {
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log.Infof("failed to get NetSockstat: %v", err)
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return -1, -1, -1, err
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}
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for _, p := range stat4.Protocols {
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if p.Protocol != "TCP" {
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continue
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}
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if p.Mem == nil {
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return -1, -1, -1, fmt.Errorf("failed to read tcpmem usage")
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}
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tcpMem = float64(*p.Mem)
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tcpMemBytes = float64(*p.Mem * skMemQuantum)
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}
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return tcpMem, tcpMemBytes, tcpMemLimit, nil
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}
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func (c *tcpMemCollector) Update() ([]*metric.Data, error) {
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tcpMem, tcpMemBytes, tcpMemLimit, err := c.getTCPMem()
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if err != nil {
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log.Infof("couldn't get tcpmem: %v", err)
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return nil, err
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}
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c.tcpMemMetric[0].Value = tcpMem
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c.tcpMemMetric[1].Value = tcpMemBytes
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c.tcpMemMetric[2].Value = tcpMemLimit
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c.tcpMemMetric[3].Value = tcpMem / tcpMemLimit
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return c.tcpMemMetric, nil
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}
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