micro/broker/options.go
2016-12-06 18:59:41 +00:00

114 lines
2.3 KiB
Go

package broker
import (
"crypto/tls"
"github.com/micro/go-micro/broker/codec"
"github.com/micro/go-micro/registry"
"golang.org/x/net/context"
)
type Options struct {
Addrs []string
Secure bool
Codec codec.Codec
TLSConfig *tls.Config
// Other options for implementations of the interface
// can be stored in a context
Context context.Context
}
type PublishOptions struct {
// Other options for implementations of the interface
// can be stored in a context
Context context.Context
}
type SubscribeOptions struct {
// AutoAck defaults to true. When a handler returns
// with a nil error the message is acked.
AutoAck bool
// Subscribers with the same queue name
// will create a shared subscription where each
// receives a subset of messages.
Queue string
// Other options for implementations of the interface
// can be stored in a context
Context context.Context
}
type Option func(*Options)
type PublishOption func(*PublishOptions)
type SubscribeOption func(*SubscribeOptions)
type contextKeyT string
var (
registryKey = contextKeyT("github.com/micro/go-micro/registry")
)
func newSubscribeOptions(opts ...SubscribeOption) SubscribeOptions {
opt := SubscribeOptions{
AutoAck: true,
}
for _, o := range opts {
o(&opt)
}
return opt
}
// Addrs sets the host addresses to be used by the broker
func Addrs(addrs ...string) Option {
return func(o *Options) {
o.Addrs = addrs
}
}
// Codec sets the codec used for encoding/decoding used where
// a broker does not support headers
func Codec(c codec.Codec) Option {
return func(o *Options) {
o.Codec = c
}
}
// DisableAutoAck will disable auto acking of messages
// after they have been handled.
func DisableAutoAck() SubscribeOption {
return func(o *SubscribeOptions) {
o.AutoAck = false
}
}
// Queue sets the name of the queue to share messages on
func Queue(name string) SubscribeOption {
return func(o *SubscribeOptions) {
o.Queue = name
}
}
func Registry(r registry.Registry) Option {
return func(o *Options) {
o.Context = context.WithValue(o.Context, registryKey, r)
}
}
// Secure communication with the broker
func Secure(b bool) Option {
return func(o *Options) {
o.Secure = b
}
}
// Specify TLS Config
func TLSConfig(t *tls.Config) Option {
return func(o *Options) {
o.TLSConfig = t
}
}