Node: Use RPC server for metrics
Context
This merge request allows to use RPC server for metrics.
This new version 1.0 of Resto now allows to launch a server with a specific callback. The Prometheus-app callback is now used as a callback for the RPC server.
This MR depends on opam-repository!357 (merged) as it requires Resto version 1.0
Manually testing the MR
- Run a sandbox node (without any metrics server)
- Check
tezos-client rpc get /metrics
Checklist
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Document the interface of any function added or modified (see the coding guidelines) -
Document any change to the user interface, including configuration parameters (see node configuration) -
Provide automatic testing (see the testing guide). -
For new features and bug fixes, add an item in the appropriate changelog ( docs/protocols/alpha.rstfor the protocol and the environment,CHANGES.rstat the root of the repository for everything else). -
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