host.id resource auto-detection

[mwear]

Problem Statement

I would like to be able collect host.id for non-containerized environments.

Proposed Solution

There is currently a spec PR: open-telemetry/opentelemetry-specification#3173 that proposes using the following sources to collect host.id per platform:

OS	Primary	Fallback
Linux	contents of /etc/machine-id	contents of /var/lib/dbus/machine-id
BSD	contents of /etc/hostid	output of kenv -q smbios.system.uuid
MacOS	IOPlatformUUID line from the output of ioreg -rd1 -c "IOPlatformExpertDevice"	-
Windows	MachineGuid from registry HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Cryptography	-

Alternatives

We could use off the shelf libraries, although they differ in implementation from what is specified. It would also be a dependency we do not control.

Prior Art

Similar libraries:

• gopsutil - https://github.com/shirou/gopsutil
• machineid - https://github.com/denisbrodbeck/machineid/

This is the JS implementation of the spec proposal:
open-telemetry/opentelemetry-js#3575

Here is a PR that attempts to address the same problem in the collector (using gopsutil):
open-telemetry/opentelemetry-collector-contrib#18740

Additional Context

I have an implementation that I will open as a PR shortly. Please assign this issue to me.