This PR allows for specifying a workload when retrieving the POSIX signals stream. Right now only 1 type of workload is supported (Cell) and only a single Cell can be specified.
To achieve this the eBPF probe now surfaces the cgroup_id and the observe_service has a cache that allows for looking up the cgroup_path for a cgroup_id. With the cgroup_path we can filter out signals relevant to a specific cell.
This PR allows for specifying a workload when retrieving the POSIX signals stream. Right now only 1 type of workload is supported (
Cell) and only a singleCellcan be specified.To achieve this the eBPF probe now surfaces the
cgroup_idand theobserve_servicehas a cache that allows for looking up thecgroup_pathfor acgroup_id. With thecgroup_pathwe can filter out signals relevant to a specific cell.