EPIC: analyze unix domain sockets

[fhilgers]

Implement a POC of #22 (comment).

User Story

1. As a User
2. I want to find out about unusual events on the system
3. So that I can diagnose them better

Acceptance Criteria

• Set Tracepoints for sending and receiving on a socket (changed kprobe to tracepoint)
• Send counter per file descriptor to userspace (timeseries will be created in client)
• Send events for data size and blocking length per process.

This ticket can be split into smaller ones after discussing with the team. Aspects like filtering per process and configuring the ebpf side is work for future tickets.

[der-whity]

Am I assuming correctly that by "blocking process" the duration of the syscall is meant?

Send events for [...] blocking length per process.

[tamemo99]

This issue was split in multiple issues:

• Unix Domain Socket: Ebpf #111 Unix Domain Socket: Ebpf
• Unix Domain Socket: Configuration #112 Unix Domain Socket: Configuration
• Unix Domain Socket: Daemon Collector #113 Unix Domain Socket: Daemon Collector
• Unix Domain Socket: Frontend #114 Unix Domain Socket: Frontend