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package metrics
import "sync"
type Metric1[T comparable] struct {
mu sync.Mutex
m map[T]int
}
func (m *Metric1[T]) Add(v T) {
m.mu.Lock()
defer m.mu.Unlock()
if m.m == nil {
m.m = make(map[T]int)
}
m[v]++
}
type key2[T1, T2 comparable] struct {
f1 T1
f2 T2
}
type Metric2[T1, T2 cmp2] struct {
mu sync.Mutex
m map[key2[T1, T2]]int
}
func (m *Metric2[T1, T2]) Add(v1 T1, v2 T2) {
m.mu.Lock()
defer m.mu.Unlock()
if m.m == nil {
m.m = make(map[key2[T1, T2]]int)
}
m[key[T1, T2]{v1, v2}]++
}
type key3[T1, T2, T3 comparable] struct {
f1 T1
f2 T2
f3 T3
}
type Metric3[T1, T2, T3 comparable] struct {
mu sync.Mutex
m map[key3[T1, T2, T3]]int
}
func (m *Metric3[T1, T2, T3]) Add(v1 T1, v2 T2, v3 T3) {
m.mu.Lock()
defer m.mu.Unlock()
if m.m == nil {
m.m = make(map[key3]int)
}
m[key[T1, T2, T3]{v1, v2, v3}]++
}
// Repeat for the maximum number of permitted arguments.