[BUG] gRPC自定义http2头信息Packet类型能采集到eBPF无法采集到，重启deepflow-server后无法Packet类型也无法采集到

[yang1992]

Search before asking

• I had searched in the issues and found no similar feature requirement.

DeepFlow Component

Agent

What you expected to happen

自定义http2头部信息，期望采集到l7_flow_log表对应的attribute_names和attribute_values字段，采集结果出现如下现象：

kprobe模式下：

1.grpc服务重启时间晚于deepflow-server，协议响应状态都是Success
Packet：使用 AF_PACKET + cBPF 采集的网卡流量数据可以采集到xxx-data，eBPF：只有很短一段时间能采集到，后面就不能采集到xxx-data，此刻重启grpc服务后Packet类型又可以采集到
2.grpc服务重启时间早于deepflow-server，协议响应状态都是Success
Packet采集不到xxx-data, eBPF也采集不到xxx-data
@yinjiping @sharang

How to reproduce

agent-group-config.yaml配置文件新增非http标准定义静态表header头信息，用于采集grpc返回结果错误码、错误信息：

l7-protocol-advanced-features:
      extra-log-fields:
        http2:
        - field-name: "xxx-data

使用grpc的UnaryServerInterceptor，invoke grpc请求，拦截返回response和err，拼凑成xxx-data，通过header返回：

func ExtractUnaryServerErrorInterceptor(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo,
	handler grpc.UnaryHandler) (interface{}, error) {

	resp, err := handler(ctx, req)
	setTrailer(ctx, info, req, resp, err)
	return resp, err
}

func setTrailer(ctx context.Context, info *grpc.UnaryServerInfo, req interface{}, resp interface{}, err error) {
	//...... //
       //获取拦截返回response和err，拼凑成data
	md := metadata.Pairs("xxx-data", data)
	grpc.SetTrailer(ctx, md)
}

DeepFlow version

Name: deepflow-server community edition
Branch: v6.5
CommitID: 8555e64
RevCount: 10792
Compiler: go version go1.21.12 linux/amd64
CompileTime: 2024-08-01 15:36:18

Defaulted container "deepflow-agent" out of: deepflow-agent, configure-sysctl (init)
10793-74069ad272adad8fb53259b8d973830c0fdf7a58
Name: deepflow-agent community edition
Branch: v6.5
CommitId: 74069ad
RevCount: 10793
Compiler: rustc 1.77.1 (7cf61ebde 2024-03-27)
CompileTime: 2024-08-02 03:12:26

DeepFlow agent list

ID NAME TYPE CTRL_IP CTRL_MAC STATE GROUP EXCEPTIONS REVISION UPGRADE_REVISION
1 master-c57a7-0-V1 K8S_VM 10.107.19.118 fe:fc:fe:a4:5a:c0 NORMAL default v6.5 10793
2 master-15d62-0-V4 K8S_VM 10.2.24.51 fe:fc:fe:97:6d:f0 NORMAL default v6.5 10793
3 master-b17e6-2-V3 K8S_VM 10.2.24.53 fe:fc:fe:2c:18:f9 NORMAL default v6.5 10793
4 master-41874-1-V2 K8S_VM 10.2.24.52 fe:fc:fe:0c:2a:26 NORMAL default v6.5 10793

Kubernetes CNI

NAMESPACE NAME DESIRED CURRENT READY UP-TO-DATE AVAILABLE NODE SELECTOR AGE
calico-system calico-node 1 1 1 1 1 kubernetes.io/os=linux 12d
kube-system kube-proxy 1 1 1 1 1 kubernetes.io/os=linux 12d
kube-system open-local-agent 1 1 1 1 1 12d

[root@master-15d62-0 fancy]# calicoctl version
Client Version: v3.26.1
Git commit: b1d192c95
Cluster Version: v3.26.1
Cluster Type: typha,kdd,k8s,operator,bgp,kubeadm

Operation-System/Kernel version

4.18.0-372.32.1.90.po1.x86_64

Anything else

http2动态表里面的header不能采集到，换成静态表里面不常用的header避免冲突，是否就没有上述问题了

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct