forked from ccfos/huatuo
130 lines
3.4 KiB
Go
130 lines
3.4 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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"bytes"
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"context"
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"encoding/binary"
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"fmt"
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"huatuo-bamai/internal/bpf"
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"huatuo-bamai/internal/pod"
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"huatuo-bamai/internal/utils/bpfutil"
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"huatuo-bamai/pkg/metric"
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"huatuo-bamai/pkg/tracing"
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)
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func init() {
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tracing.RegisterEventTracing("mmcgroup", newMemoryCgroup)
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}
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func newMemoryCgroup() (*tracing.EventTracingAttr, error) {
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return &tracing.EventTracingAttr{
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TracingData: &memoryCgroup{},
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Internal: 10,
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Flag: tracing.FlagTracing | tracing.FlagMetric,
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}, nil
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}
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type memoryCgroupMetric struct {
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DirectstallCount uint64
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}
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//go:generate $BPF_COMPILE $BPF_INCLUDE -s $BPF_DIR/memory_cgroup.c -o $BPF_DIR/memory_cgroup.o
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type memoryCgroup struct {
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bpf bpf.BPF
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isRuning bool
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}
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func (c *memoryCgroup) Update() ([]*metric.Data, error) {
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if !c.isRuning {
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return nil, nil
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}
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containersMap := make(map[uint64]*pod.Container)
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containers, err := pod.GetNormalContainers()
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if err != nil {
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return nil, fmt.Errorf("Can't get normal container: %w", err)
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}
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for _, container := range containers {
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containersMap[container.CSS["memory"]] = container
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}
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items, err := c.bpf.DumpMapByName("mem_cgroup_map")
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if err != nil {
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return nil, fmt.Errorf("Can't dump mem_cgroup_map: %w", err)
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}
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var (
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cgroupMetric memoryCgroupMetric
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containersMetric []*metric.Data
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css uint64
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)
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for _, v := range items {
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keyBuf := bytes.NewReader(v.Key)
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if err := binary.Read(keyBuf, binary.LittleEndian, &css); err != nil {
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return nil, fmt.Errorf("mem_cgroup_map key: %w", err)
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}
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valBuf := bytes.NewReader(v.Value)
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if err := binary.Read(valBuf, binary.LittleEndian, &cgroupMetric); err != nil {
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return nil, fmt.Errorf("mem_cgroup_map value: %w", err)
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}
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if container, exist := containersMap[css]; exist {
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containersMetric = append(containersMetric,
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metric.NewContainerGaugeData(container, "directstallcount",
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float64(cgroupMetric.DirectstallCount),
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"counting of cgroup try_charge reclaim", nil))
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}
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}
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// if events haven't happened, upload zero for all containers.
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if len(items) == 0 {
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for _, container := range containersMap {
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containersMetric = append(containersMetric,
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metric.NewContainerGaugeData(container, "directstallcount", float64(0),
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"counting of cgroup try_charge reclaim", nil))
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}
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}
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return containersMetric, nil
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}
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func (c *memoryCgroup) Start(ctx context.Context) error {
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var err error
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c.bpf, err = bpf.LoadBpf(bpfutil.ThisBpfOBJ(), nil)
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if err != nil {
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return fmt.Errorf("LoadBpf memory_cgroup.o: %w", err)
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}
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defer c.bpf.Close()
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if err = c.bpf.Attach(); err != nil {
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return fmt.Errorf("failed to Attach, err: %w", err)
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}
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childCtx, cancel := context.WithCancel(ctx)
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defer cancel()
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c.bpf.WaitDetachByBreaker(childCtx, cancel)
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c.isRuning = true
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<-childCtx.Done()
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c.isRuning = false
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return nil
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}
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