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main: Add logging support controlled by command line

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This makes the log macros (error!, warn!, info!, etc) in the code work.
It currently defaults to showing only error! messages, but by passing an
increasing number of "-v"s on the command line the verbosity can be
increased.

By default log output goes onto stderr but it can also be sent to a
file.

Fixes: #121

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2019-08-07 12:19:21 +01:00
parent 91ce39e2a6
commit fca911e5f3
3 changed files with 86 additions and 0 deletions
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@@ -160,6 +160,7 @@ dependencies = [
"credibility 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
"dirs 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
"lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
"log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
"ssh2 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
"tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
"vmm 0.1.0",