80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package redisactivity
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import (
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"errors"
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"fmt"
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"reflect"
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"regexp"
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"strings"
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"time"
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"github.com/redis/go-redis/v9"
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"proxy-pool/internal/platform/credentials"
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)
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var (
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ErrInvalidOptions = errors.New("invalid redis activity adapter options")
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namespacePattern = regexp.MustCompile(`^[A-Za-z0-9._-]+$`)
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)
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type Options struct {
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Namespace string
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Credentials credentials.Store
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OperationTTL time.Duration
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MaxCandidateScan int
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MaxRuntimeCounters int
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MaxInventoryScan int
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CleanupLimit int
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}
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type Adapter struct {
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client redis.Scripter
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credentials credentials.Store
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keys keyspace
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options Options
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}
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func New(client redis.Scripter, options Options) (*Adapter, error) {
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options.Namespace = strings.TrimSpace(options.Namespace)
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if options.MaxRuntimeCounters == 0 {
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options.MaxRuntimeCounters = options.MaxCandidateScan
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}
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if options.MaxInventoryScan == 0 {
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options.MaxInventoryScan = options.MaxCandidateScan
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}
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if nilInterface(client) || nilInterface(options.Credentials) ||
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!namespacePattern.MatchString(options.Namespace) || options.OperationTTL <= 0 ||
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options.MaxCandidateScan <= 0 || options.MaxRuntimeCounters <= 0 ||
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options.MaxInventoryScan <= 0 || options.CleanupLimit <= 0 {
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return nil, ErrInvalidOptions
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}
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return &Adapter{
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client: client,
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credentials: options.Credentials,
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keys: newKeyspace(options.Namespace),
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options: options,
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}, nil
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}
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func (a *Adapter) Format(state fmt.State, _ rune) {
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if a == nil {
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_, _ = state.Write([]byte("redisactivity.Adapter<nil>"))
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return
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}
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_, _ = fmt.Fprintf(state, "redisactivity.Adapter{Namespace:%q}", a.options.Namespace)
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}
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func nilInterface(value any) bool {
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if value == nil {
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return true
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}
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reflected := reflect.ValueOf(value)
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switch reflected.Kind() {
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case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Pointer, reflect.Slice:
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return reflected.IsNil()
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default:
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return false
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}
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}
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