forked from gliderlabs/logspout
/
extpoints.go
336 lines (279 loc) · 6.49 KB
/
extpoints.go
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// generated by go-extpoints -- DO NOT EDIT
package router
import (
"reflect"
"sync"
"strings"
"runtime"
)
var registry = struct {
sync.Mutex
extpoints map[string]*extensionPoint
}{
extpoints: make(map[string]*extensionPoint),
}
type extensionPoint struct {
sync.Mutex
iface reflect.Type
components map[string]interface{}
}
func newExtensionPoint(iface interface{}) *extensionPoint {
ep := &extensionPoint{
iface: reflect.TypeOf(iface).Elem(),
components: make(map[string]interface{}),
}
registry.Lock()
defer registry.Unlock()
registry.extpoints[ep.iface.Name()] = ep
return ep
}
func (ep *extensionPoint) lookup(name string) (ext interface{}, ok bool) {
ep.Lock()
defer ep.Unlock()
ext, ok = ep.components[name]
return
}
func (ep *extensionPoint) all() map[string]interface{} {
ep.Lock()
defer ep.Unlock()
all := make(map[string]interface{})
for k, v := range ep.components {
all[k] = v
}
return all
}
func (ep *extensionPoint) register(component interface{}, name string) bool {
ep.Lock()
defer ep.Unlock()
if name == "" {
comType := reflect.TypeOf(component)
if comType.Kind() == reflect.Func {
nameParts := strings.Split(runtime.FuncForPC(
reflect.ValueOf(component).Pointer()).Name(), ".")
name = nameParts[len(nameParts)-1]
} else {
name = comType.Elem().Name()
}
}
_, exists := ep.components[name]
if exists {
return false
}
ep.components[name] = component
return true
}
func (ep *extensionPoint) unregister(name string) bool {
ep.Lock()
defer ep.Unlock()
_, exists := ep.components[name]
if !exists {
return false
}
delete(ep.components, name)
return true
}
func implements(component interface{}) []string {
var ifaces []string
typ := reflect.TypeOf(component)
for name, ep := range registry.extpoints {
if ep.iface.Kind() == reflect.Func && typ.AssignableTo(ep.iface) {
ifaces = append(ifaces, name)
}
if ep.iface.Kind() != reflect.Func && typ.Implements(ep.iface) {
ifaces = append(ifaces, name)
}
}
return ifaces
}
func Register(component interface{}, name string) []string {
registry.Lock()
defer registry.Unlock()
var ifaces []string
for _, iface := range implements(component) {
if ok := registry.extpoints[iface].register(component, name); ok {
ifaces = append(ifaces, iface)
}
}
return ifaces
}
func Unregister(name string) []string {
registry.Lock()
defer registry.Unlock()
var ifaces []string
for iface, extpoint := range registry.extpoints {
if ok := extpoint.unregister(name); ok {
ifaces = append(ifaces, iface)
}
}
return ifaces
}
// HttpHandler
var HttpHandlers = &httpHandlerExt{
newExtensionPoint(new(HttpHandler)),
}
type httpHandlerExt struct {
*extensionPoint
}
func (ep *httpHandlerExt) Unregister(name string) bool {
return ep.unregister(name)
}
func (ep *httpHandlerExt) Register(component HttpHandler, name string) bool {
return ep.register(component, name)
}
func (ep *httpHandlerExt) Lookup(name string) (HttpHandler, bool) {
ext, ok := ep.lookup(name)
if !ok {
return nil, ok
}
return ext.(HttpHandler), ok
}
func (ep *httpHandlerExt) All() map[string]HttpHandler {
all := make(map[string]HttpHandler)
for k, v := range ep.all() {
all[k] = v.(HttpHandler)
}
return all
}
func (ep *httpHandlerExt) Names() []string {
var names []string
for k := range ep.all() {
names = append(names, k)
}
return names
}
// AdapterFactory
var AdapterFactories = &adapterFactoryExt{
newExtensionPoint(new(AdapterFactory)),
}
type adapterFactoryExt struct {
*extensionPoint
}
func (ep *adapterFactoryExt) Unregister(name string) bool {
return ep.unregister(name)
}
func (ep *adapterFactoryExt) Register(component AdapterFactory, name string) bool {
return ep.register(component, name)
}
func (ep *adapterFactoryExt) Lookup(name string) (AdapterFactory, bool) {
ext, ok := ep.lookup(name)
if !ok {
return nil, ok
}
return ext.(AdapterFactory), ok
}
func (ep *adapterFactoryExt) All() map[string]AdapterFactory {
all := make(map[string]AdapterFactory)
for k, v := range ep.all() {
all[k] = v.(AdapterFactory)
}
return all
}
func (ep *adapterFactoryExt) Names() []string {
var names []string
for k := range ep.all() {
names = append(names, k)
}
return names
}
// AdapterTransport
var AdapterTransports = &adapterTransportExt{
newExtensionPoint(new(AdapterTransport)),
}
type adapterTransportExt struct {
*extensionPoint
}
func (ep *adapterTransportExt) Unregister(name string) bool {
return ep.unregister(name)
}
func (ep *adapterTransportExt) Register(component AdapterTransport, name string) bool {
return ep.register(component, name)
}
func (ep *adapterTransportExt) Lookup(name string) (AdapterTransport, bool) {
ext, ok := ep.lookup(name)
if !ok {
return nil, ok
}
return ext.(AdapterTransport), ok
}
func (ep *adapterTransportExt) All() map[string]AdapterTransport {
all := make(map[string]AdapterTransport)
for k, v := range ep.all() {
all[k] = v.(AdapterTransport)
}
return all
}
func (ep *adapterTransportExt) Names() []string {
var names []string
for k := range ep.all() {
names = append(names, k)
}
return names
}
// Job
var Jobs = &jobExt{
newExtensionPoint(new(Job)),
}
type jobExt struct {
*extensionPoint
}
func (ep *jobExt) Unregister(name string) bool {
return ep.unregister(name)
}
func (ep *jobExt) Register(component Job, name string) bool {
return ep.register(component, name)
}
func (ep *jobExt) Lookup(name string) (Job, bool) {
ext, ok := ep.lookup(name)
if !ok {
return nil, ok
}
return ext.(Job), ok
}
func (ep *jobExt) All() map[string]Job {
all := make(map[string]Job)
for k, v := range ep.all() {
all[k] = v.(Job)
}
return all
}
func (ep *jobExt) Names() []string {
var names []string
for k := range ep.all() {
names = append(names, k)
}
return names
}
// LogRouter
var LogRouters = &logRouterExt{
newExtensionPoint(new(LogRouter)),
}
type logRouterExt struct {
*extensionPoint
}
func (ep *logRouterExt) Unregister(name string) bool {
return ep.unregister(name)
}
func (ep *logRouterExt) Register(component LogRouter, name string) bool {
return ep.register(component, name)
}
func (ep *logRouterExt) Lookup(name string) (LogRouter, bool) {
ext, ok := ep.lookup(name)
if !ok {
return nil, ok
}
return ext.(LogRouter), ok
}
func (ep *logRouterExt) All() map[string]LogRouter {
all := make(map[string]LogRouter)
for k, v := range ep.all() {
all[k] = v.(LogRouter)
}
return all
}
func (ep *logRouterExt) Names() []string {
var names []string
for k := range ep.all() {
names = append(names, k)
}
return names
}