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Rename internal counter bookkeeping field #8

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Rename internal counter bookkeeping field #8

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21 changes: 21 additions & 0 deletions internal/metrics.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
package internal

// Counters is a trivial in-memory metrics registry for the demo service.
type Counters struct {
counts map[string]int
}

// NewCounters constructs an empty Counters.
func NewCounters() *Counters {
return &Counters{counts: make(map[string]int)}
}

// Incr increments the named counter by 1.
func (c *Counters) Incr(name string) {
c.counts[name]++
}

// Value returns the current value of the named counter.
func (c *Counters) Value(name string) int {
return c.counts[name]
}
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