Source code for insights.specs.datasources.ps

"""
Custom datasources for ps information
"""
from insights.core.context import HostContext
from insights.core.dr import SkipComponent
from insights.core.plugins import datasource
from insights.core.spec_factory import DatasourceProvider, simple_command
from insights.specs import Specs


[docs]class LocalSpecs(Specs): """ Local specs used only by ps datasources """ ps_eo_args = simple_command("/bin/ps -eo pid,args") """ Returns ps output including pid and full args """
@datasource(LocalSpecs.ps_eo_args, HostContext) def ps_eo_cmd(broker): """ Custom datasource to collect the full paths to all running commands on the system provided by the ``ps -eo pid,args`` command. After collecting the data, all of the args are trimmed to leave only the command including full path. Sample output from the ``ps -eo pid, args`` command:: PID COMMAND 1 /usr/lib/systemd/systemd --switched-root --system --deserialize 31 2 [kthreadd] 3 [rcu_gp] 4 [rcu_par_gp] 6 [kworker/0:0H-events_highpri] 9 [mm_percpu_wq] 10 [rcu_tasks_kthre] 11 /usr/bin/python3 /home/user1/python_app.py 12 [kworker/u16:0-kcryptd/253:0] This datasource trims off the args to minimize possible PII and sensitive information. After trimming the data looks like this:: PID COMMAND 1 /usr/lib/systemd/systemd 2 [kthreadd] 3 [rcu_gp] 4 [rcu_par_gp] 6 [kworker/0:0H-events_highpri] 9 [mm_percpu_wq] 10 [rcu_tasks_kthre] 11 /usr/bin/python3 12 [kworker/u16:0-kcryptd/253:0] Returns: str: Returns a multiline string in the same format as ``ps`` output Raises: SkipComponent: Raised if no data is available """ content = broker[LocalSpecs.ps_eo_args].content data = [] data.append('PID COMMAND') start = False for l in content: if 'PID' in l and 'COMMAND' in l: start = True continue if not start: continue pid, args = l.strip().split(None, 1) if ' ' in args: cmd, _ = args.split(None, 1) else: cmd = args data.append('{0} {1}'.format(pid, cmd)) if len(data) > 1: return DatasourceProvider('\n'.join(data), relative_path='insights_commands/ps_eo_cmd') raise SkipComponent()