Logging to journald/systemd does not add scope about conmon-rs

[saschagrunert]

Looks like the fields are available, for example when using journalctl -o verbose, -o json or --output-fields=...

See: tokio-rs/tracing#2118 (reply in thread)

2022-05-12 09:07:20.828614 CEST [s=20b2555f06b54ae2977e7c3de68aea52;i=c50f31;b=ece98242ae0446218e2a5a3b1c45efa7;m=6a8373ee;t=5decb357fdc58;x=2ba630d1c6b5c343]
    PRIORITY=6
    _UID=1000
    _GID=100
    _CAP_EFFECTIVE=0
    _SELINUX_CONTEXT=kernel
    _AUDIT_LOGINUID=1000
    _SYSTEMD_OWNER_UID=1000
    _SYSTEMD_SLICE=user-1000.slice
    _MACHINE_ID=4ef6243ad0d84d968b0a6e3060f537ba
    _HOSTNAME=nixos
    _TRANSPORT=journal
    _SYSTEMD_USER_SLICE=-.slice
    _AUDIT_SESSION=1
    _SYSTEMD_CGROUP=/user.slice/user-1000.slice/session-1.scope
    _SYSTEMD_SESSION=1
    _SYSTEMD_UNIT=session-1.scope
    SYSLOG_IDENTIFIER=conmonrs
    _COMM=conmonrs
    _EXE=/home/sascha/git/conmon-rs/target/debug/conmonrs
    TARGET=conmon::rpc
    CODE_FILE=conmon-rs/server/src/rpc.rs
    SPAN_NAME=create_container
    SPAN_TARGET=conmon::rpc
    SPAN_CODE_FILE=conmon-rs/server/src/rpc.rs
    MESSAGE=Got a create container request
    _BOOT_ID=ece98242ae0446218e2a5a3b1c45efa7
    _SYSTEMD_INVOCATION_ID=0da0c431609e4615a2daec637f6cc035
    _CMDLINE=/home/sascha/git/conmon-rs/target/debug/conmonrs --runtime /run/current-system/sw/bin/runc --runtime-dir /tmp/conmon-client2847946209 --runtime-root /tmp/conmon-client2847946209/root --log-level debug --log-driver systemd
    _PID=130708
    SPAN_CODE_LINE=71
    F_CONTAINER_ID=b4d44536b7a58e187d26e843af6480ccd73d7dd4a3fe34b66dbc8a7eb07fc42a
    F_UUID=28fe31d8-ab08-40dd-9df6-06a2bc6e4d3c
    CODE_LINE=74
    _SOURCE_REALTIME_TIMESTAMP=1652339240828614

Thu 2022-05-12 09:07:20.829355 CEST [s=20b2555f06b54ae2977e7c3de68aea52;i=c50f34;b=ece98242ae0446218e2a5a3b1c45efa7;m=6a8375b2;t=5decb357fde1c;x=a253f70c717e9ad9]
    PRIORITY=6
    _UID=1000
    _GID=100
    _CAP_EFFECTIVE=0
    _SELINUX_CONTEXT=kernel
    _AUDIT_LOGINUID=1000
    _SYSTEMD_OWNER_UID=1000
    _SYSTEMD_SLICE=user-1000.slice
    _MACHINE_ID=4ef6243ad0d84d968b0a6e3060f537ba
    _HOSTNAME=nixos
    _TRANSPORT=journal
    _SYSTEMD_USER_SLICE=-.slice
    _AUDIT_SESSION=1
    _SYSTEMD_CGROUP=/user.slice/user-1000.slice/session-1.scope
    _SYSTEMD_SESSION=1
    _SYSTEMD_UNIT=session-1.scope
    SYSLOG_IDENTIFIER=conmonrs
    _COMM=conmonrs
    _EXE=/home/sascha/git/conmon-rs/target/debug/conmonrs
    TARGET=conmon::rpc
    CODE_FILE=conmon-rs/server/src/rpc.rs
    SPAN_NAME=create_container
    SPAN_TARGET=conmon::rpc
    SPAN_CODE_FILE=conmon-rs/server/src/rpc.rs
    _BOOT_ID=ece98242ae0446218e2a5a3b1c45efa7
    _SYSTEMD_INVOCATION_ID=0da0c431609e4615a2daec637f6cc035
    _CMDLINE=/home/sascha/git/conmon-rs/target/debug/conmonrs --runtime /run/current-system/sw/bin/runc --runtime-dir /tmp/conmon-client2847946209 --runtime-root /tmp/conmon-client2847946209/root --log-level debug --log-driver systemd
    _PID=130708
    SPAN_CODE_LINE=71
    F_CONTAINER_ID=b4d44536b7a58e187d26e843af6480ccd73d7dd4a3fe34b66dbc8a7eb07fc42a
    F_UUID=28fe31d8-ab08-40dd-9df6-06a2bc6e4d3c
    CODE_LINE=83
    MESSAGE=PID file is /tmp/conmon-client2847946209/pidfile
    _SOURCE_REALTIME_TIMESTAMP=1652339240829355