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
// Extra options settable by users.
// Used for other implementations.
Options map[string]string
}
func newOptions(opt ...Option) Options {
opts := Options{
Codecs: make(map[string]codec.NewCodec),
Metadata: map[string]string{},
Options: map[string]string{},
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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
}
if opts.Transport == nil {
opts.Transport = transport.DefaultTransport
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}
if len(opts.Address) == 0 {
opts.Address = DefaultAddress
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}
if len(opts.Name) == 0 {
opts.Name = DefaultName
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}
if len(opts.Id) == 0 {
opts.Id = DefaultId
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}
if len(opts.Version) == 0 {
opts.Version = DefaultVersion
}
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return opts
}
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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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}
}
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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 {
return func(o *Options) {
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)
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}
}