Return a guard variable from `create_logger()` which the caller can
implicitly drop to guarantee that all threads started by the async log
drain are stopped.
This fixes a long-standing bug [1] whereby the agent could panic with
the following error, generated by the `slog` logging crate:
```
slog::Fuse Drain: Custom { kind: Other, error: "serde serialization error: Bad file descriptor (os error 9)" }
```
[1] - See https://github.com/kata-containers/kata-containers/issues/171.
Signed-off-by: James O. D. Hunt <james.o.hunt@intel.com>
Anyone can collaborate in the Kata Containers project, so instead of
adding her/his name and email to the Cargo.toml files, use
`The Kata Containers community` as name and
`kata-dev@lists.katacontainers.io` as email.
fixes#643
Signed-off-by: Julio Montes <julio.montes@intel.com>
Added new functions to convert to/from a log level name (like `debug`)
to/from the equivalent `slog::Level::Debug`.
Signed-off-by: James O. D. Hunt <james.o.hunt@intel.com>
The agent logger is useful and generic enough that it can be used by
other components, so move the agent logging package to below a top level
`pkg` to encourage re-use.
Signed-off-by: James O. D. Hunt <james.o.hunt@intel.com>
