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config.go
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config.go
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package benchmark
import (
"errors"
"time"
"github.com/kakao/varlog/internal/flags"
"github.com/kakao/varlog/pkg/types"
)
const (
defaultClusterID = flags.DefaultClusterID
DefaultMessageSize = 0
DefaultBatchSize = 1
DefaultConcurrency = 0
DefaultDuration = 1 * time.Minute
DefaultReportInterval = 3 * time.Second
)
type config struct {
cid types.ClusterID
targets []Target
mraddrs []string
duration time.Duration
reportInterval time.Duration
reportEncoder ReportEncoder
singleConnPerTarget bool
}
func newConfig(opts []Option) (config, error) {
cfg := config{
cid: defaultClusterID,
duration: DefaultDuration,
reportInterval: DefaultReportInterval,
}
for _, opt := range opts {
opt.apply(&cfg)
}
if err := cfg.validate(); err != nil {
return config{}, err
}
return cfg, nil
}
func (cfg *config) validate() error {
if len(cfg.mraddrs) == 0 {
return errors.New("no metadata repository address")
}
if len(cfg.targets) == 0 {
return errors.New("no load target")
}
for _, target := range cfg.targets {
if err := target.Valid(); err != nil {
return err
}
}
return nil
}
type Option interface {
apply(*config)
}
type funcOption struct {
f func(*config)
}
func newFuncOption(f func(*config)) *funcOption {
return &funcOption{f: f}
}
func (fo *funcOption) apply(cfg *config) {
fo.f(cfg)
}
func WithClusterID(cid types.ClusterID) Option {
return newFuncOption(func(cfg *config) {
cfg.cid = cid
})
}
func WithTargets(targets ...Target) Option {
return newFuncOption(func(cfg *config) {
cfg.targets = targets
})
}
func WithMetadataRepository(addrs []string) Option {
return newFuncOption(func(cfg *config) {
cfg.mraddrs = addrs
})
}
func WithDuration(duration time.Duration) Option {
return newFuncOption(func(cfg *config) {
cfg.duration = duration
})
}
func WithReportInterval(reportInterval time.Duration) Option {
return newFuncOption(func(cfg *config) {
cfg.reportInterval = reportInterval
})
}
func WithReportEncoder(enc ReportEncoder) Option {
return newFuncOption(func(cfg *config) {
cfg.reportEncoder = enc
})
}
func WithSingleConnPerTarget() Option {
return newFuncOption(func(cfg *config) {
cfg.singleConnPerTarget = true
})
}