portable_ada VS rust-prometheus

For getting UTF-8 support one can also use Dmitry Kazakovs Simple components (http://www.dmitry-kazakov.de/ada/components). Based on it have made a UTF-8 version which is Ada/Spark based (https://github.com/joakim-strandberg/aida_2012). Another one I have been toying with is cross-compiler: https://github.com/joakim-strandberg/portable_ada . To print to standard out using UTF-8 the easiest way is probably enabling "-gnatW8" in order for normal String types be interpreted as UTF-8 strings. Using the UTF-8 support in the links I would recommend making one's own Ada bindings to the OS. It should be easy to do on Mac OS X and Linux where UTF-8 is enabled by default but more of an issue on Windows where the UTF-8 encoded strings need to be converted to UTF-16 before being handed over to the OS.

[dependencies] prometheus = { git = "https://github.com/tikv/rust-prometheus", rev = "ac86a264223c8d918a43e739ca3c48bb4aaedb90", features = ["process"] }

Metrics exposition is implemented with prometheus crate.

The new Elasticsearch exporter is written in the Rust programming language and is open-sourced on GitHub: github.com/vinted/elasticsearch-exporter-rs. The exporter uses asynchronous Tokio runtime, Rust Prometheus instrumentation library and the official Elasticsearch client library. Metrics collection is decoupled from the serving /metrics endpoint. In addition, Elasticsearch time-based metrics in milliseconds are converted into seconds to comply with Prometheus best practices (metrics ending in “millis” are replaced by “seconds”, “_bytes” and “_seconds” and postfixes are added where appropriate).

Rust has a popular binding: https://github.com/tikv/rust-prometheus