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6beee27886
This PR modifies how the metrics library handles `Enabled`: previously, the package `init` decided whether to serve real metrics or just dummy-types. This has several drawbacks: - During pkg init, we need to determine whether metrics are enabled or not. So we first hacked in a check if certain geth-specific commandline-flags were enabled. Then we added a similar check for geth-env-vars. Then we almost added a very elaborate check for toml-config-file, plus toml parsing. - Using "real" types and dummy types interchangeably means that everything is hidden behind interfaces. This has a performance penalty, and also it just adds a lot of code. This PR removes the interface stuff, uses concrete types, and allows for the setting of Enabled to happen later. It is still assumed that `metrics.Enable()` is invoked early on. The somewhat 'heavy' operations, such as ticking meters and exp-decay, now checks the enable-flag to prevent resource leak. The change may be large, but it's mostly pretty trivial, and from the last time I gutted the metrics, I ensured that we have fairly good test coverage. --------- Co-authored-by: Felix Lange <fjl@twurst.com> |
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| .. | ||
| bft | ||
| downloader | ||
| ethconfig | ||
| fetcher | ||
| filters | ||
| gasprice | ||
| hooks | ||
| tracers | ||
| util | ||
| api.go | ||
| api_backend.go | ||
| api_test.go | ||
| api_tracer.go | ||
| backend.go | ||
| backend_test.go | ||
| bloombits.go | ||
| handler.go | ||
| handler_test.go | ||
| helper_test.go | ||
| metrics.go | ||
| peer.go | ||
| protocol.go | ||
| protocol_test.go | ||
| state_accessor.go | ||
| sync.go | ||
| sync_test.go | ||