mirror of
https://github.com/luxfi/node.git
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zeekay
7cf87b230b
The module already called itself github.com/luxfi/node while containing no node in Go: cmd/luxd was twenty-one lines that printed the size of a few types, and the Go column of the matrix measured a VM plugin. A repo that fetches the thing it claims to be has not replaced it, so the Go sources move in — 1515 files, the daemon and everything under it — and the build reaches outside this module for nothing. Rust and C++ sit beside it unchanged and are still measured against it by the differential. That is the point of one repo: the reference implementation and the two ports are the same checkout, so parity is a thing you can run rather than a thing you assert. Verified: builds, and the closure carries no lux-private — checked at build time rather than believed. The daemon starts twelve chains on a local network (P X C Q Z A B G K M F, plus D through its plugin) and reports healthy.
63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
// Copyright (C) 2019-2025, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package metrics
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import (
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"errors"
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"fmt"
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"sync"
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"github.com/luxfi/metric"
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)
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var errReregisterGatherer = errors.New("attempted to register a gatherer when one is already registered")
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var _ OptionalGatherer = (*optionalGatherer)(nil)
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// OptionalGatherer extends the Gatherer interface by allowing the optional
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// registration of a single gatherer. If no gatherer is registered, Gather will
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// return no metrics and no error. If a gatherer is registered, Gather will
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// return the results of calling Gather on the provided gatherer.
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type OptionalGatherer interface {
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metric.Gatherer
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// Register the provided gatherer. If a gatherer was previously registered,
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// an error will be returned.
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Register(gatherer metric.Gatherer) error
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}
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type optionalGatherer struct {
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lock sync.RWMutex
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gatherer metric.Gatherer
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}
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func NewOptionalGatherer() OptionalGatherer {
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return &optionalGatherer{}
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}
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func (g *optionalGatherer) Gather() ([]*metric.MetricFamily, error) {
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g.lock.RLock()
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defer g.lock.RUnlock()
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if g.gatherer == nil {
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return nil, nil
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}
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return g.gatherer.Gather()
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}
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func (g *optionalGatherer) Register(gatherer metric.Gatherer) error {
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g.lock.Lock()
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defer g.lock.Unlock()
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if g.gatherer != nil {
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return fmt.Errorf("%w; existing: %#v; new: %#v",
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errReregisterGatherer,
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g.gatherer,
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gatherer,
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)
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}
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g.gatherer = gatherer
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return nil
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}
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