76 lines
1.8 KiB
Go
76 lines
1.8 KiB
Go
package server
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import (
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"github.com/micro/go-micro/registry"
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)
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// Handler interface represents a Service request handler. It's generated
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// by passing any type of public concrete object with methods into server.NewHandler.
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// Most will pass in a struct.
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//
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// Example:
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//
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// type Service struct {}
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//
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// func (s *Service) Method(context, request, response) error {
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// return nil
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// }
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//
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type Handler interface {
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Name() string
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Handler() interface{}
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Endpoints() []*registry.Endpoint
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Options() HandlerOptions
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}
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// Subscriber interface represents a subscription to a given topic using
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// a specific subscriber function or object with methods.
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type Subscriber interface {
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Topic() string
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Subscriber() interface{}
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Endpoints() []*registry.Endpoint
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Options() SubscriberOptions
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}
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type HandlerOptions struct {
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Internal bool
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Metadata map[string]map[string]string
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}
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type SubscriberOptions struct {
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Queue string
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Internal bool
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}
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// Internal Handler options specifies that a handler is not advertised
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// to the discovery system. In the future this may also limit request
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// to the internal network or authorised user.
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func InternalHandler(b bool) HandlerOption {
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return func(o *HandlerOptions) {
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o.Internal = b
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}
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}
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// EndpointMetadata is a Handler option that allows metadata to be added to
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// individual endpoints.
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func EndpointMetadata(endpoint string, metadata map[string]string) HandlerOption {
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return func(o *HandlerOptions) {
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o.Metadata[endpoint] = metadata
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}
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}
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// Internal Subscriber options specifies that a subscriber is not advertised
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// to the discovery system.
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func InternalSubscriber(b bool) SubscriberOption {
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return func(o *SubscriberOptions) {
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o.Internal = b
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}
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}
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// Shared queue name distributed messages across subscribers
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func SubscriberQueue(n string) SubscriberOption {
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return func(o *SubscriberOptions) {
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o.Queue = n
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}
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}
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