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Fix logging from inside the WASM runtime #7355
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When using `RuntimeLogger` to log something from the runtime, we didn't set any logging level. So, we actually did not log anything from the runtime as logging is disabled by default. This pr fixes that by setting the logging level to `TRACE`. It also adds a test to ensure this does not break again ;)
tomusdrw
reviewed
Oct 19, 2020
frame/support/src/debug.rs
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| @@ -185,6 +193,7 @@ impl log::Log for RuntimeLogger { | |||
| } | |||
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| fn log(&self, record: &log::Record) { | |||
| debug(&"Hey2"); | |||
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I suppose this is not intended.
| // | ||
| // If we don't set any level, logging is disabled | ||
| // completly. | ||
| log::set_max_level(log::LevelFilter::Trace); |
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AFAIR it shouldn't matter. We already return true in log::Log::enabled which should be responsible for filtering like that? Are you sure it's actually filtered somewhere internally in log crate?
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Yes. I checked that. Remove the line and the test fails ;)
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https://docs.rs/log/0.4.11/log/#implementing-a-logger
They also mention it here that you need to call it.
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https://docs.rs/log/0.4.11/src/log/macros.rs.html#46
Here they call the max_level function that checks the value that is set with set_max_value
bkchr
commented
Oct 19, 2020
tomusdrw
approved these changes
Oct 20, 2020
| // | ||
| // If we don't set any level, logging is disabled | ||
| // completly. | ||
| log::set_max_level(log::LevelFilter::Trace); |
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When using
RuntimeLoggerto log something from the runtime, we didn'tset any logging level. So, we actually did not log anything from the
runtime as logging is disabled by default. This pr fixes that by setting
the logging level to
TRACE. It also adds a test to ensure this doesnot break again ;)