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memory.go
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memory.go
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// Copyright 2018-2024 CERN
//
// 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.
//
// In applying this license, CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
package memory
import (
"fmt"
"sync"
"github.com/cs3org/reva/pkg/registry"
)
// Registry implements the Registry interface.
type Registry struct {
// m protects async access to the services map.
sync.Mutex
// services map a service name with a set of nodes.
services map[string]registry.Service
}
// Add implements the Registry interface. If the service is already known in this registry it will only update the nodes.
func (r *Registry) Add(svc registry.Service) error {
r.Lock()
defer r.Unlock()
// append the nodes if the service is already registered.
if _, ok := r.services[svc.Name()]; ok {
s := service{
name: svc.Name(),
nodes: make([]node, 0),
}
s.mergeNodes(svc.Nodes(), r.services[svc.Name()].Nodes())
r.services[svc.Name()] = s
return nil
}
r.services[svc.Name()] = svc
return nil
}
// GetService implements the Registry interface. There is currently no load balance being done, but it should not be
// hard to add.
func (r *Registry) GetService(name string) (registry.Service, error) {
r.Lock()
defer r.Unlock()
if service, ok := r.services[name]; ok {
return service, nil
}
return nil, fmt.Errorf("service %v not found", name)
}
// New returns an implementation of the Registry interface.
func New(m map[string]interface{}) registry.Registry {
// c, err := registry.ParseConfig(m)
// if err != nil {
// return nil
// }
return &Registry{
services: map[string]registry.Service{},
}
}