stackdriver_logger 0.4.0

A logger for Google's Stackdriver with a cli-friendly fallback for local development
Documentation
# Stackdriver logger

A logger for Google's Stackdriver.\
In debug mode, we fall back back to [pretty-env-logger](https://github.com/seanmonstar/pretty-env-logger).\
In release mode, we output JSON formatted logs compatible with Stackdriver.

## Usage
```rust
use stackdriver_logger;
use log::{error, info, trace, debug, warn};

fn main() {
    stackdriver_logger::init();

    trace!("trace log");
    debug!("debug log");
    info!("info log");
    warn!("warn log");
    error!("error log");
}
```

## Behavior
You need to provide two environment variables, `SERVICE_NAME` and `SERVICE_VERSION`, everything else
is handled by the library. \
We're using Cargo's `CARGO_PKG_NAME` and `CARGO_PKG_VERSION` as a fallback, but these are only available
if you run your application via Cargo. \
`serviceName` and `serviceVersion` are left blank if none of the above are found.

## Enabling logging
This library accepts a `RUST_LOG` env variable, it works exactly like in [`env_logger`](https://github.com/sebasmagri/env_logger). \
By default, everything is disabled except for `error!`.
To enable all logs for your application :

```
RUST_LOG=your_application cargo run
```

For more details, take a look at the [env_logger docs](https://docs.rs/env_logger/0.6.0/env_logger/#enabling-logging).

## License
Licensed under either of

- Apache License, Version 2.0 ([LICENSE-APACHE]LICENSE-APACHE or http://apache.org/licenses/LICENSE-2.0)
- MIT license ([LICENSE-MIT]LICENSE-MIT or http://opensource.org/licenses/MIT)