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117 lines
2.9 KiB
117 lines
2.9 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/client-native/v6/models"
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"github.com/haproxytech/dataplaneapi/haproxy"
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)
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type awsServiceDiscovery struct {
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services Store
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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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// NewAWSDiscoveryService creates a new ServiceDiscovery that connects to AWS
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func NewAWSDiscoveryService(params ServiceDiscoveriesParams) ServiceDiscovery {
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return &awsServiceDiscovery{
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services: NewInstanceStore(),
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client: params.Client,
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reloadAgent: params.ReloadAgent,
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context: params.Context,
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}
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}
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func (a awsServiceDiscovery) AddNode(id string, params ServiceDiscoveryParams) (err error) {
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aParams, ok := params.(*models.AwsRegion)
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if !ok {
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return errors.New("expected *models.AwsRegion")
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}
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var instance *awsInstance
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instance, err = newAWSRegionInstance(a.context, aParams, a.client, a.reloadAgent)
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if err != nil {
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return
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}
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if err = a.services.Create(id, instance); err != nil {
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return
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}
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if *aParams.Enabled {
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instance.start()
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}
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return
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}
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func (a awsServiceDiscovery) GetNode(id string) (params ServiceDiscoveryParams, err error) {
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var i interface{}
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if i, err = a.services.Read(id); err != nil {
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return
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}
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return i.(*awsInstance).params, nil
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}
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func (a awsServiceDiscovery) GetNodes() (ServiceDiscoveryParams, error) {
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var awsRegions models.AwsRegions
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for _, as := range a.services.List() {
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awsRegions = append(awsRegions, as.(*awsInstance).params)
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}
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return awsRegions, nil
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}
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func (a awsServiceDiscovery) RemoveNode(id string) error {
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return a.services.Delete(id)
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}
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func (a awsServiceDiscovery) UpdateNode(id string, params ServiceDiscoveryParams) error {
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newParams, ok := params.(*models.AwsRegion)
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if !ok {
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return errors.New("expected *models.AwsRegion")
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}
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return a.services.Update(id, func(item interface{}) (err error) {
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ai := item.(*awsInstance)
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if err = ai.updateTimeout(*newParams.RetryTimeout); err != nil {
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if *ai.params.Enabled {
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ai.stop()
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}
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return errors.New("invalid retry_timeout")
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}
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switch {
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case *newParams.Enabled == *ai.params.Enabled:
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break
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case *newParams.Enabled && !*ai.params.Enabled:
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ai.start()
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default:
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ai.stop()
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}
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ai.params = newParams
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if *ai.params.Enabled {
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ai.update <- struct{}{}
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}
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return
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})
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}
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