/
vip_handler.go
100 lines (84 loc) · 2.84 KB
/
vip_handler.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/registry/server/env"
"github.com/amalgam8/amalgam8/registry/utils/i18n"
)
func (routes *Routes) listVips(w rest.ResponseWriter, r *rest.Request) {
vip := r.PathParam(RouterParamVip)
if vip == "" {
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
"error": "vip is required",
}).Warn("Failed to list vip")
i18n.Error(r, w, http.StatusBadRequest, i18n.EurekaErrorVIPRequired)
return
}
catalog := routes.catalog(w, r)
if catalog == nil {
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
"error": "catalog is nil",
}).Errorf("Failed to list vip %s", vip)
// error response set by routes.catalog()
return
}
services := catalog.ListServices(nil)
if services == nil {
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
"error": "services list is nil",
}).Errorf("Failed to list vip %s", vip)
i18n.Error(r, w, http.StatusInternalServerError, i18n.EurekaErrorVIPEnumeration)
return
}
var instsCount int
apps := &Applications{Application: make([]*Application, 0, len(services))}
listRes := &ApplicationsList{Applications: apps}
for _, svc := range services {
insts, err := catalog.List(svc.ServiceName, nil)
// The service might be removed by other user in the middle
if err != nil {
continue
}
app := &Application{Name: svc.ServiceName, Instances: make([]*Instance, 0, len(insts))}
for _, inst := range insts {
if vipaddr, ok := inst.Extension[extVIP]; ok {
if vipaddr == vip {
app.Instances = append(app.Instances, buildInstanceFromRegistry(inst))
instsCount++
}
}
}
if len(app.Instances) > 0 {
apps.Application = append(apps.Application, app)
}
}
err := w.WriteJson(listRes)
if err != nil {
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
"error": err,
}).Warn("Failed to encode vips list")
i18n.Error(r, w, http.StatusInternalServerError, i18n.ErrorEncoding)
return
}
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
}).Infof("List vips (%d apps, %d insts)", len(apps.Application), instsCount)
}