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122 lines
4.0 KiB
122 lines
4.0 KiB
// Copyright 2019 HAProxy Technologies
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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package discovery
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import (
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"context"
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"errors"
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"github.com/haproxytech/client-native/v6/configuration"
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"github.com/haproxytech/dataplaneapi/haproxy"
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)
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// ServiceDiscoveryParams configuration for a specific service discovery
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type ServiceDiscoveryParams interface{}
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// ServiceDiscovery represents the required methods for a service discovery
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type ServiceDiscovery interface {
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AddNode(id string, params ServiceDiscoveryParams) error
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GetNode(id string) (ServiceDiscoveryParams, error)
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GetNodes() (ServiceDiscoveryParams, error)
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RemoveNode(id string) error
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UpdateNode(id string, params ServiceDiscoveryParams) error
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}
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// ServiceDiscoveries manages all registered service discovery services
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type ServiceDiscoveries interface {
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AddNode(serviceName string, id string, params ServiceDiscoveryParams) error
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AddService(serviceName string, serviceImpl ServiceDiscovery) error
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GetNode(serviceName string, id string) (ServiceDiscoveryParams, error)
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GetNodes(serviceName string) (ServiceDiscoveryParams, error)
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RemoveNode(serviceName string, id string) error
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RemoveService(serviceName string) error
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UpdateNode(serviceName string, id string, params ServiceDiscoveryParams) error
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}
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// ServiceDiscoveriesParams contain the parameters for the service discovery initialization
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type ServiceDiscoveriesParams struct {
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Client configuration.Configuration
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ReloadAgent haproxy.IReloadAgent
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Context context.Context
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}
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// NewServiceDiscoveries creates a new ServiceDiscoveries instance
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func NewServiceDiscoveries(params ServiceDiscoveriesParams) ServiceDiscoveries {
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sd := &serviceDiscoveryImpl{
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services: NewInstanceStore(),
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}
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sd.AddService("consul", NewConsulDiscoveryService(params))
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_ = sd.AddService("aws", NewAWSDiscoveryService(params))
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return sd
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}
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type serviceDiscoveryImpl struct {
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services Store
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}
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func (s *serviceDiscoveryImpl) AddNode(serviceName string, id string, params ServiceDiscoveryParams) error {
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sd, err := s.services.Read(serviceName)
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if err != nil {
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return errors.New("service not found")
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}
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return sd.(ServiceDiscovery).AddNode(id, params)
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}
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func (s *serviceDiscoveryImpl) AddService(serviceName string, serviceImpl ServiceDiscovery) error {
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if err := s.services.Create(serviceName, serviceImpl); err != nil {
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return errors.New("service already exists")
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}
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return nil
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}
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func (s *serviceDiscoveryImpl) GetNode(serviceName string, id string) (ServiceDiscoveryParams, error) {
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sd, err := s.services.Read(serviceName)
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if err != nil {
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return nil, errors.New("service not found")
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}
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return sd.(ServiceDiscovery).GetNode(id)
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}
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func (s *serviceDiscoveryImpl) GetNodes(serviceName string) (ServiceDiscoveryParams, error) {
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sd, err := s.services.Read(serviceName)
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if err != nil {
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return nil, errors.New("service not found")
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}
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return sd.(ServiceDiscovery).GetNodes()
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}
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func (s *serviceDiscoveryImpl) RemoveNode(serviceName string, id string) error {
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sd, err := s.services.Read(serviceName)
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if err != nil {
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return errors.New("service not found")
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}
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return sd.(ServiceDiscovery).RemoveNode(id)
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}
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func (s *serviceDiscoveryImpl) RemoveService(serviceName string) error {
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if err := s.services.Delete(serviceName); err != nil {
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return errors.New("service not found")
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}
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return nil
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}
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func (s *serviceDiscoveryImpl) UpdateNode(serviceName string, id string, params ServiceDiscoveryParams) error {
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sd, err := s.services.Read(serviceName)
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if err != nil {
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return errors.New("service not found")
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}
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return sd.(ServiceDiscovery).UpdateNode(id, params)
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}
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