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package solomon
import (
"reflect"
"strconv"
"sync"
"a.yandex-team.ru/library/go/core/metrics"
"a.yandex-team.ru/library/go/core/metrics/internal/pkg/metricsutil"
"a.yandex-team.ru/library/go/core/metrics/internal/pkg/registryutil"
)
var _ metrics.Registry = (*Registry)(nil)
type Registry struct {
separator string
prefix string
tags map[string]string
rated bool
useNameTag bool
subregistries map[string]*Registry
m *sync.Mutex
metrics *sync.Map
}
func NewRegistry(opts *RegistryOpts) *Registry {
r := &Registry{
separator: ".",
useNameTag: false,
subregistries: make(map[string]*Registry),
m: new(sync.Mutex),
metrics: new(sync.Map),
}
if opts != nil {
r.separator = string(opts.Separator)
r.prefix = opts.Prefix
r.tags = opts.Tags
r.rated = opts.Rated
r.useNameTag = opts.UseNameTag
for _, collector := range opts.Collectors {
collector(r)
}
}
return r
}
// Rated returns copy of registry with rated set to desired value.
func (r Registry) Rated(rated bool) metrics.Registry {
return &Registry{
separator: r.separator,
prefix: r.prefix,
tags: r.tags,
rated: rated,
useNameTag: r.useNameTag,
subregistries: r.subregistries,
m: r.m,
metrics: r.metrics,
}
}
// WithTags creates new sub-scope, where each metric has tags attached to it.
func (r Registry) WithTags(tags map[string]string) metrics.Registry {
return r.newSubregistry(r.prefix, registryutil.MergeTags(r.tags, tags))
}
// WithPrefix creates new sub-scope, where each metric has prefix added to it name.
func (r Registry) WithPrefix(prefix string) metrics.Registry {
return r.newSubregistry(registryutil.BuildFQName(r.separator, r.prefix, prefix), r.tags)
}
// ComposeName builds FQ name with appropriate separator.
func (r Registry) ComposeName(parts ...string) string {
return registryutil.BuildFQName(r.separator, parts...)
}
func (r Registry) Counter(name string) metrics.Counter {
s := &Counter{
name: r.newMetricName(name),
metricType: typeCounter,
tags: r.tags,
useNameTag: r.useNameTag,
}
return r.registerMetric(s).(metrics.Counter)
}
func (r Registry) FuncCounter(name string, function func() int64) metrics.FuncCounter {
s := &FuncCounter{
name: r.newMetricName(name),
metricType: typeCounter,
tags: r.tags,
function: function,
useNameTag: r.useNameTag,
}
return r.registerMetric(s).(metrics.FuncCounter)
}
func (r Registry) Gauge(name string) metrics.Gauge {
s := &Gauge{
name: r.newMetricName(name),
metricType: typeGauge,
tags: r.tags,
useNameTag: r.useNameTag,
}
return r.registerMetric(s).(metrics.Gauge)
}
func (r Registry) FuncGauge(name string, function func() float64) metrics.FuncGauge {
s := &FuncGauge{
name: r.newMetricName(name),
metricType: typeGauge,
tags: r.tags,
function: function,
useNameTag: r.useNameTag,
}
return r.registerMetric(s).(metrics.FuncGauge)
}
func (r Registry) Timer(name string) metrics.Timer {
s := &Timer{
name: r.newMetricName(name),
metricType: typeGauge,
tags: r.tags,
useNameTag: r.useNameTag,
}
return r.registerMetric(s).(metrics.Timer)
}
func (r Registry) Histogram(name string, buckets metrics.Buckets) metrics.Histogram {
s := &Histogram{
name: r.newMetricName(name),
metricType: typeHistogram,
tags: r.tags,
bucketBounds: metricsutil.BucketsBounds(buckets),
bucketValues: make([]int64, buckets.Size()),
useNameTag: r.useNameTag,
}
return r.registerMetric(s).(metrics.Histogram)
}
func (r Registry) DurationHistogram(name string, buckets metrics.DurationBuckets) metrics.Timer {
s := &Histogram{
name: r.newMetricName(name),
metricType: typeHistogram,
tags: r.tags,
bucketBounds: metricsutil.DurationBucketsBounds(buckets),
bucketValues: make([]int64, buckets.Size()),
useNameTag: r.useNameTag,
}
return r.registerMetric(s).(metrics.Timer)
}
func (r *Registry) newSubregistry(prefix string, tags map[string]string) *Registry {
// differ simple and rated registries
keyTags := registryutil.MergeTags(tags, map[string]string{"rated": strconv.FormatBool(r.rated)})
registryKey := registryutil.BuildRegistryKey(prefix, keyTags)
r.m.Lock()
defer r.m.Unlock()
if existing, ok := r.subregistries[registryKey]; ok {
return existing
}
subregistry := &Registry{
separator: r.separator,
prefix: prefix,
tags: tags,
rated: r.rated,
useNameTag: r.useNameTag,
subregistries: r.subregistries,
m: r.m,
metrics: r.metrics,
}
r.subregistries[registryKey] = subregistry
return subregistry
}
func (r *Registry) newMetricName(name string) string {
return registryutil.BuildFQName(r.separator, r.prefix, name)
}
func (r *Registry) registerMetric(s Metric) Metric {
if r.rated {
Rated(s)
}
// differ simple and rated registries
keyTags := registryutil.MergeTags(r.tags, map[string]string{"rated": strconv.FormatBool(r.rated)})
key := registryutil.BuildRegistryKey(s.Name(), keyTags)
oldMetric, loaded := r.metrics.LoadOrStore(key, s)
if !loaded {
return s
}
if reflect.TypeOf(oldMetric) == reflect.TypeOf(s) {
return oldMetric.(Metric)
} else {
r.metrics.Store(key, s)
return s
}
}
|
