/
service_handler.go
138 lines (117 loc) · 4.14 KB
/
service_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 amalgam8
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) getServiceInstances(w rest.ResponseWriter, r *rest.Request) {
sname := r.PathParam(RouteParamServiceName)
if sname == "" {
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
"error": "service name is required",
}).Warn("Failed to lookup service")
i18n.Error(r, w, http.StatusBadRequest, i18n.ErrorServiceNameMissing)
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 lookup service %s", sname)
// error response set by routes.catalog()
return
}
if instances, err := catalog.List(sname, nil); err != nil {
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
"error": err,
}).Errorf("Failed to lookup service %s", sname)
i18n.Error(r, w, statusCodeFromError(err), i18n.ErrorServiceEnumeration)
return
} else if instances == nil || len(instances) == 0 {
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
"error": "no such service name",
}).Warnf("Failed to lookup service %s", sname)
i18n.Error(r, w, http.StatusNotFound, i18n.ErrorServiceNotFound)
return
} else {
insts := make([]*ServiceInstance, len(instances))
for index, si := range instances {
inst, err := copyInstanceWithFilter(sname, si, nil)
if err != nil {
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
"error": err,
}).Warnf("Failed to lookup service %s", sname)
i18n.Error(r, w, http.StatusInternalServerError, i18n.ErrorFilterGeneric)
return
}
insts[index] = inst
}
if err := w.WriteJson(&InstanceList{ServiceName: sname, Instances: insts}); err != nil {
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
"error": err,
}).Warnf("Failed to encode lookup response for %s", sname)
i18n.Error(r, w, http.StatusInternalServerError, i18n.ErrorInternalServer)
return
}
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
}).Infof("Lookup service %s (%d)", sname, len(insts))
}
}
func (routes *Routes) listServices(w rest.ResponseWriter, r *rest.Request) {
catalog := routes.catalog(w, r)
if catalog == nil {
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
"error": "catalog is nil",
}).Error("Failed to list services")
// 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",
}).Error("Failed to list services")
i18n.Error(r, w, http.StatusInternalServerError, i18n.ErrorServiceEnumeration)
return
}
listRes := &ServicesList{Services: make([]string, len(services), len(services))}
for index, svc := range services {
listRes.Services[index] = svc.ServiceName
}
err := w.WriteJson(listRes)
if err != nil {
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
"error": err,
}).Warn("Failed to encode services list")
i18n.Error(r, w, http.StatusInternalServerError, i18n.ErrorEncoding)
return
}
routes.logger.WithFields(log.Fields{
"namespace": r.Env[env.Namespace],
}).Infof("List services (%d)", len(listRes.Services))
}