/
routes.go
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/
routes.go
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// Copyright 2016 IBM Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package eureka
import (
"net/http"
log "github.com/Sirupsen/logrus"
"github.com/ant0ine/go-json-rest/rest"
"github.com/amalgam8/amalgam8/pkg/auth"
"github.com/amalgam8/amalgam8/registry/server/env"
"github.com/amalgam8/amalgam8/registry/server/protocol"
"github.com/amalgam8/amalgam8/registry/store"
"github.com/amalgam8/amalgam8/registry/utils/i18n"
"github.com/amalgam8/amalgam8/registry/utils/logging"
)
const (
module = "EUREKA"
)
// Routes encapsulates information needed for the eureka protocol routes
type Routes struct {
catalogMap store.CatalogMap
logger *log.Entry
}
// New creates a new eureka Server instance
func New(catalogMap store.CatalogMap) *Routes {
return &Routes{
catalogMap: catalogMap,
logger: logging.GetLogger(module),
}
}
// RouteHandlers returns an array of routes
func (routes *Routes) RouteHandlers(middlewares ...rest.Middleware) []*rest.Route {
descriptors := []*protocol.APIDescriptor{
{
Path: applicationTemplateURL(),
Method: "POST",
Protocol: protocol.Eureka,
Operation: protocol.RegisterInstance,
Handler: routes.registerInstance,
},
{
Path: instanceTemplateURL(),
Method: "DELETE",
Protocol: protocol.Eureka,
Operation: protocol.DeregisterInstance,
Handler: routes.deregisterInstance,
},
{
Path: instanceTemplateURL(),
Method: "PUT",
Protocol: protocol.Eureka,
Operation: protocol.RenewInstance,
Handler: routes.renewInstance,
},
{
Path: applicationsURL(),
Method: "GET",
Protocol: protocol.Eureka,
Operation: protocol.ListServices,
Handler: routes.listApps,
},
{
Path: applicationsURLTrailingSlash(),
Method: "GET",
Protocol: protocol.Eureka,
Operation: protocol.ListServices,
Handler: routes.listApps,
},
{
Path: applicationTemplateURL(),
Method: "GET",
Protocol: protocol.Eureka,
Operation: protocol.ListServiceInstances,
Handler: routes.listAppInstances,
},
{
Path: instanceTemplateURL(),
Method: "GET",
Protocol: protocol.Eureka,
Operation: protocol.GetInstance,
Handler: routes.getInstanceByAppAndID,
},
{
Path: instanceQueryTemplateURL(),
Method: "GET",
Protocol: protocol.Eureka,
Operation: protocol.GetInstance,
Handler: routes.getInstanceByID,
},
{
Path: instanceStatusTemplateURL(),
Method: "PUT",
Protocol: protocol.Eureka,
Operation: protocol.SetInstanceStatus,
Handler: routes.setStatus,
},
{
Path: vipTemplateURL(),
Method: "GET",
Protocol: protocol.Eureka,
Operation: protocol.ListServiceInstances,
Handler: routes.listVips,
},
}
rts := make([]*rest.Route, 0, len(descriptors))
for _, desc := range descriptors {
desc.Handler = rest.WrapMiddlewares(middlewares, desc.Handler)
desc.Handler = protocol.APIHandler(desc.Handler, desc.Protocol, desc.Operation)
rts = append(rts, desc.AsRoute())
}
return rts
}
func (routes *Routes) catalog(w rest.ResponseWriter, r *rest.Request) store.Catalog {
if r.Env[env.Namespace] == nil {
i18n.Error(r, w, http.StatusUnauthorized, i18n.ErrorNamespaceNotFound)
return nil
}
namespace := r.Env[env.Namespace].(auth.Namespace)
if catalog, err := routes.catalogMap.GetCatalog(namespace); err != nil {
i18n.Error(r, w, http.StatusInternalServerError, i18n.ErrorInternalServer)
return nil
} else if catalog == nil {
i18n.Error(r, w, http.StatusBadRequest, i18n.ErrorNamespaceNotFound)
return nil
} else {
return catalog
}
}