180 lines
2.8 KiB
Go
180 lines
2.8 KiB
Go
package mock
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import (
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"errors"
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"sync"
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"github.com/micro/go-micro/broker"
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"github.com/pborman/uuid"
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)
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type mockBroker struct {
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opts broker.Options
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sync.RWMutex
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connected bool
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Subscribers map[string][]*mockSubscriber
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}
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type mockPublication struct {
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topic string
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message *broker.Message
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}
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type mockSubscriber struct {
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id string
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topic string
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exit chan bool
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handler broker.Handler
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opts broker.SubscribeOptions
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}
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func (m *mockBroker) Options() broker.Options {
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return m.opts
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}
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func (m *mockBroker) Address() string {
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return ""
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}
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func (m *mockBroker) Connect() error {
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m.Lock()
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defer m.Unlock()
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if m.connected {
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return nil
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}
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m.connected = true
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return nil
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}
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func (m *mockBroker) Disconnect() error {
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m.Lock()
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defer m.Unlock()
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if !m.connected {
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return nil
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}
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m.connected = false
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return nil
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}
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func (m *mockBroker) Init(opts ...broker.Option) error {
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for _, o := range opts {
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o(&m.opts)
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}
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return nil
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}
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func (m *mockBroker) Publish(topic string, message *broker.Message, opts ...broker.PublishOption) error {
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m.Lock()
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defer m.Unlock()
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if !m.connected {
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return errors.New("not connected")
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}
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subs, ok := m.Subscribers[topic]
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if !ok {
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return nil
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}
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p := &mockPublication{
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topic: topic,
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message: message,
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}
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for _, sub := range subs {
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if err := sub.handler(p); err != nil {
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return err
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}
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}
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return nil
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}
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func (m *mockBroker) Subscribe(topic string, handler broker.Handler, opts ...broker.SubscribeOption) (broker.Subscriber, error) {
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m.Lock()
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defer m.Unlock()
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if !m.connected {
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return nil, errors.New("not connected")
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}
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var options broker.SubscribeOptions
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for _, o := range opts {
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o(&options)
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}
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sub := &mockSubscriber{
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exit: make(chan bool, 1),
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id: uuid.NewUUID().String(),
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topic: topic,
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handler: handler,
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opts: options,
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}
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m.Subscribers[topic] = append(m.Subscribers[topic], sub)
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go func() {
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<-sub.exit
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m.Lock()
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var newSubscribers []*mockSubscriber
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for _, sb := range m.Subscribers[topic] {
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if sb.id == sub.id {
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continue
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}
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newSubscribers = append(newSubscribers, sb)
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}
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m.Subscribers[topic] = newSubscribers
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m.Unlock()
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}()
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return sub, nil
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}
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func (m *mockBroker) String() string {
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return "mock"
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}
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func (m *mockPublication) Topic() string {
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return m.topic
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}
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func (m *mockPublication) Message() *broker.Message {
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return m.message
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}
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func (m *mockPublication) Ack() error {
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return nil
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}
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func (m *mockSubscriber) Options() broker.SubscribeOptions {
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return m.opts
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}
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func (m *mockSubscriber) Topic() string {
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return m.topic
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}
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func (m *mockSubscriber) Unsubscribe() error {
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m.exit <- true
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return nil
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}
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func NewBroker(opts ...broker.Option) broker.Broker {
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var options broker.Options
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for _, o := range opts {
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o(&options)
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}
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return &mockBroker{
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opts: options,
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Subscribers: make(map[string][]*mockSubscriber),
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}
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}
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