Agent to teardown sessions on signals

[ip1981]

Closes #1476.

jul 15 15:24:10 c1.local iml-agent-daemon[663]: Jul 15 15:24:10.810 DEBUG iml_agent::http_comms::crypto_client: resp headers: {"server": "nginx/1.16.1", "date": "Wed, 15 Jul 2020 15:24:10 GMT", "content-length": "0", "connection": "keep-alive"}
jul 15 15:24:13 c1.local systemd[1]: Stopping Rust IML Agent Daemon...
jul 15 15:24:13 c1.local iml-agent-daemon[663]: Jul 15 15:24:13.191  INFO iml_agent_daemon: Terminating...
jul 15 15:24:13 c1.local iml-agent-daemon[663]: Jul 15 15:24:13.191  INFO iml_agent::http_comms::session: Terminating all sessions
jul 15 15:24:13 c1.local iml-agent-daemon[663]: Jul 15 15:24:13.191  INFO iml_agent::http_comms::session: Terminating session PluginName("stats")/Id("40cf2205-aaee-44ef-9601-f6a38b306851")
jul 15 15:24:13 c1.local iml-agent-daemon[663]: Jul 15 15:24:13.192  INFO iml_agent::http_comms::session: Terminating session PluginName("ntp")/Id("928ba107-9443-4df2-9e86-da141bd958f2")
jul 15 15:24:13 c1.local iml-agent-daemon[663]: Jul 15 15:24:13.192  INFO iml_agent::http_comms::session: Terminating session PluginName("postoffice")/Id("8162b9b7-3fda-47a2-bc55-9fa3b12c860b")
jul 15 15:24:13 c1.local iml-agent-daemon[663]: Jul 15 15:24:13.192 DEBUG iml_agent::daemon_plugins::postoffice: Ending Inotify Listen for /etc/iml/postman.conf
jul 15 15:24:13 c1.local iml-agent-daemon[663]: Jul 15 15:24:13.192  INFO iml_agent::http_comms::session: Terminating session PluginName("device")/Id("13a704ce-f772-4caa-9233-649f27a1c85a")
jul 15 15:24:13 c1.local iml-agent-daemon[663]: Jul 15 15:24:13.193  INFO iml_agent::http_comms::session: Terminating session PluginName("ostpool")/Id("370515a3-0986-4b04-8b2a-db1dda484d3e")
jul 15 15:24:13 c1.local iml-agent-daemon[663]: Jul 15 15:24:13.193  INFO iml_agent::http_comms::session: Terminating session PluginName("action_runner")/Id("d64d353c-30ed-45c3-bb4e-a7163d580783")
jul 15 15:24:13 c1.local systemd[1]: Stopped Rust IML Agent Daemon.
jul 15 15:24:13 c1.local systemd[1]: Started Rust IML Agent Daemon.
jul 15 15:24:13 c1.local iml-agent-daemon[1828]: Jul 15 15:24:13.280  INFO iml_agent_daemon: Starting Rust agent_daemon
jul 15 15:24:13 c1.local iml-agent-daemon[1828]: unable to write 'random state'
jul 15 15:24:13 c1.local iml-agent-daemon[1828]: Jul 15 15:24:13.312  INFO iml_agent::daemon_plugins::daemon_plugin: Loaded the following DaemonPlugins:

Signed-off-by: Igor Pashev pashev.igor@gmail.com

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This change is 

[mkpankov]

Reviewed 1 of 1 files at r1.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @ip1981 and @utopiabound)

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iml-agent/src/main.rs, line 48 at r1 (raw file):

pooler, pooler_reg

Typos: poller

[ip1981]

Probably we could make a utility function:

async fn main () {
  // spawn
  signals().await;
  // clean up
}

[jgrund]

Has a conflict on latest master

[mkpankov]

Reviewed 1 of 1 files at r3.
Reviewable status: all files reviewed, 3 unresolved discussions (waiting on @ip1981, @jgrund, and @utopiabound)