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params.go
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/
params.go
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package codebook
import (
"context"
"errors"
cadre_metrics "github.com/moderntv/cadre/metrics"
"github.com/nats-io/nats.go"
"github.com/rs/zerolog"
"google.golang.org/protobuf/proto"
)
type LoadAllFunc[K comparable, T any] func(ctx context.Context) (entries map[K]*T, err error)
type Params[K comparable, T any] struct {
Context context.Context
Log zerolog.Logger
MetricsRegistry *cadre_metrics.Registry
Invalidations *Invalidations
Name string
LoadAllFunc LoadAllFunc[K, T]
Timeouts Timeouts
MemsizeEnabled bool
}
func (p *Params[K, T]) check() error {
if p.Context == nil {
return errors.New("context must be set")
}
if p.Name == "" {
return errors.New("name must be set")
}
if p.LoadAllFunc == nil {
return errors.New("LoadAllFunc must be provided")
}
err := p.Timeouts.check()
if err != nil {
return err
}
if p.Invalidations != nil {
return p.Invalidations.check()
}
return nil
}
type Invalidations struct {
Nats *nats.Conn
Prefix string
Messages map[string]proto.Message
}
func (i *Invalidations) check() error {
if i.Nats == nil {
return errors.New("no nats connection specified")
}
if len(i.Messages) == 0 {
return errors.New("empty invalidation messages")
}
return nil
}