micro/server/options.go

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package server
import (
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"github.com/micro/go-micro/broker"
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"github.com/micro/go-micro/codec"
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"github.com/micro/go-micro/registry"
"github.com/micro/go-micro/transport"
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)
type options struct {
codecs map[string]codec.NewCodec
broker broker.Broker
registry registry.Registry
transport transport.Transport
metadata map[string]string
name string
address string
advertise string
id string
version string
hdlrWrappers []HandlerWrapper
subWrappers []SubscriberWrapper
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}
func newOptions(opt ...Option) options {
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opts := options{
codecs: make(map[string]codec.NewCodec),
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}
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for _, o := range opt {
o(&opts)
}
if opts.broker == nil {
opts.broker = broker.DefaultBroker
}
if opts.registry == nil {
opts.registry = registry.DefaultRegistry
}
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if opts.transport == nil {
opts.transport = transport.DefaultTransport
}
if len(opts.address) == 0 {
opts.address = DefaultAddress
}
if len(opts.name) == 0 {
opts.name = DefaultName
}
if len(opts.id) == 0 {
opts.id = DefaultId
}
if len(opts.version) == 0 {
opts.version = DefaultVersion
}
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return opts
}
func (o options) Name() string {
return o.name
}
func (o options) Id() string {
return o.name + "-" + o.id
}
func (o options) Version() string {
return o.version
}
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func (o options) Address() string {
return o.address
}
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func (o options) Advertise() string {
return o.advertise
}
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func (o options) Metadata() map[string]string {
return o.metadata
}
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// Server name
func Name(n string) Option {
return func(o *options) {
o.name = n
}
}
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// Unique server id
func Id(id string) Option {
return func(o *options) {
o.id = id
}
}
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// Version of the service
func Version(v string) Option {
return func(o *options) {
o.version = v
}
}
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// Address to bind to - host:port
func Address(a string) Option {
return func(o *options) {
o.address = a
}
}
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// The address to advertise for discovery - host:port
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func Advertise(a string) Option {
return func(o *options) {
o.advertise = a
}
}
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// Broker to use for pub/sub
func Broker(b broker.Broker) Option {
return func(o *options) {
o.broker = b
}
}
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// Codec to use to encode/decode requests for a given content type
func Codec(contentType string, c codec.NewCodec) Option {
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return func(o *options) {
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o.codecs[contentType] = c
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}
}
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// Registry used for discovery
func Registry(r registry.Registry) Option {
return func(o *options) {
o.registry = r
}
}
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// Transport mechanism for communication e.g http, rabbitmq, etc
func Transport(t transport.Transport) Option {
return func(o *options) {
o.transport = t
}
}
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// Metadata associated with the server
func Metadata(md map[string]string) Option {
return func(o *options) {
o.metadata = md
}
}
// Adds a handler Wrapper to a list of options passed into the server
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func WrapHandler(w HandlerWrapper) Option {
return func(o *options) {
o.hdlrWrappers = append(o.hdlrWrappers, w)
}
}
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// Adds a subscriber Wrapper to a list of options passed into the server
func WrapSubscriber(w SubscriberWrapper) Option {
return func(o *options) {
o.subWrappers = append(o.subWrappers, w)
}
}