Reviewed on: 2019-08-30
logger is the main logging service on Fuchsia. It provides the fuchsia.logger.LogSink
service which components use to log messages, and the fuchsia.logger.Log
service which log_listener
uses to read back logs. It has a 4 MB rotating buffer in which all logs are stored. It also reads the kernel log and merges log messages from it into its buffer.
This project is included in the core
build product.
The diagnostics archivist is started on-demand by clients connecting to the LogSink
protocol. In practice this means an instance is usually running already.
Unit tests are available in the archivist_tests
package.
Integration tests for system logging are available in the logger_integration_tests
package.
$ fx run-test archivist_tests $ fx run-test logger_integration_tests
The entrypoint is located in src/main.rs
, with the rest of the code living in src/*.rs
files. Unit tests are co-located with the code and integration tests are located in the tests/
directory.