Opentelemetry support

This crate is a fork of EmbarkStudios/tracing-logfmt that adds the opentelemetry trace and span id to the log output.

Logfmt

Logfmt is a compact and simple log format for structured logging. Each log row contains one level of key/value pairs. To keep it as compact and readable as possible, values are only quoted if needed.

key=value otherkey="value with spaces" third="with escaped \"chars\""

There is no strict standard for the format, but it was first documented in this article by Brandur Leach.

License

This contribution is dual licensed under EITHER OF

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

at your option.

For clarity, "your" refers to Embark or any other licensee/user of the contribution.