mirror of https://github.com/tidwall/tile38.git
765 lines
17 KiB
Go
765 lines
17 KiB
Go
package endpoint
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import (
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"errors"
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"net/url"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/streadway/amqp"
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)
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var errExpired = errors.New("expired")
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// Protocol is the type of protocol that the endpoint represents.
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type Protocol string
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const (
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// Local protocol
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Local = Protocol("local")
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// HTTP protocol
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HTTP = Protocol("http")
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// Disque protocol
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Disque = Protocol("disque")
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// GRPC protocol
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GRPC = Protocol("grpc")
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// Redis protocol
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Redis = Protocol("redis")
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// Kafka protocol
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Kafka = Protocol("kafka")
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// MQTT protocol
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MQTT = Protocol("mqtt")
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// AMQP protocol
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AMQP = Protocol("amqp")
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// SQS protocol
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SQS = Protocol("sqs")
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// Google Cloud Pubsub protocol
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PubSub = Protocol("pubsub")
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// NATS protocol
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NATS = Protocol("nats")
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)
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// Endpoint represents an endpoint.
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type Endpoint struct {
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Protocol Protocol
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Original string
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GRPC struct {
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Host string
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Port int
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}
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Disque struct {
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Host string
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Port int
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QueueName string
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Options struct {
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Replicate int
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}
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}
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Redis struct {
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Host string
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Port int
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Channel string
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}
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Kafka struct {
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Host string
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Port int
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TopicName string
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SASL bool
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SASLSHA256 bool
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SASLSHA512 bool
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TLS bool
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CACertFile string
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CertFile string
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KeyFile string
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}
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AMQP struct {
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URI string
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SSL bool
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QueueName string
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RouteKey string
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Type string
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Durable bool
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AutoDelete bool
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Internal bool
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NoWait bool
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Mandatory bool
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Immediate bool
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DeliveryMode uint8
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Priority uint8
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}
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MQTT struct {
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Host string
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Port int
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QueueName string
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Qos byte
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Retained bool
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CACertFile string
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CertFile string
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KeyFile string
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}
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PubSub struct {
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Project string
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Topic string
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CredPath string
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}
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SQS struct {
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PlainURL string
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QueueID string
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Region string
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CredPath string
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CredProfile string
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QueueName string
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CreateQueue bool
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}
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NATS struct {
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Host string
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Port int
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User string
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Pass string
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Topic string
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}
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Local struct {
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Channel string
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}
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}
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// Conn is an endpoint connection
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type Conn interface {
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Expired() bool
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Send(val string) error
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}
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// Manager manages all endpoints
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type Manager struct {
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mu sync.RWMutex
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conns map[string]Conn
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publisher LocalPublisher
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}
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// NewManager returns a new manager
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func NewManager(publisher LocalPublisher) *Manager {
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epc := &Manager{
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conns: make(map[string]Conn),
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publisher: publisher,
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}
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go epc.Run()
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return epc
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}
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// Run starts the managing of endpoints
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func (epc *Manager) Run() {
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for {
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time.Sleep(time.Second)
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func() {
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epc.mu.Lock()
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defer epc.mu.Unlock()
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for endpoint, conn := range epc.conns {
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if conn.Expired() {
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delete(epc.conns, endpoint)
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}
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}
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}()
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}
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}
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// Validate an endpoint url
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func (epc *Manager) Validate(url string) error {
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_, err := parseEndpoint(url)
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return err
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}
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// Send send a message to an endpoint
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func (epc *Manager) Send(endpoint, msg string) error {
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for {
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epc.mu.Lock()
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conn, exists := epc.conns[endpoint]
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if !exists || conn.Expired() {
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ep, err := parseEndpoint(endpoint)
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if err != nil {
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epc.mu.Unlock()
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return err
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}
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switch ep.Protocol {
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default:
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return errors.New("invalid protocol")
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case HTTP:
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conn = newHTTPConn(ep)
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case Disque:
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conn = newDisqueConn(ep)
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case GRPC:
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conn = newGRPCConn(ep)
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case Redis:
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conn = newRedisConn(ep)
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case Kafka:
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conn = newKafkaConn(ep)
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case MQTT:
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conn = newMQTTConn(ep)
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case AMQP:
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conn = newAMQPConn(ep)
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case PubSub:
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conn = newPubSubConn(ep)
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case SQS:
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conn = newSQSConn(ep)
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case NATS:
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conn = newNATSConn(ep)
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case Local:
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conn = newLocalConn(ep, epc.publisher)
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}
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epc.conns[endpoint] = conn
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}
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epc.mu.Unlock()
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err := conn.Send(msg)
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if err != nil {
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if err == errExpired {
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// it's possible that the connection has expired in-between
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// the last conn.Expired() check and now. If so, we should
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// just try the send again.
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continue
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}
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return err
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}
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return nil
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}
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}
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func parseEndpoint(s string) (Endpoint, error) {
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var endpoint Endpoint
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endpoint.Original = s
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switch {
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default:
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return endpoint, errors.New("unknown scheme")
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case strings.HasPrefix(s, "local:"):
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endpoint.Protocol = Local
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case strings.HasPrefix(s, "http:"):
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endpoint.Protocol = HTTP
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case strings.HasPrefix(s, "https:"):
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if probeSQS(s) {
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endpoint.SQS.PlainURL = s
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endpoint.Protocol = SQS
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} else {
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endpoint.Protocol = HTTP
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}
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case strings.HasPrefix(s, "disque:"):
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endpoint.Protocol = Disque
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case strings.HasPrefix(s, "grpc:"):
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endpoint.Protocol = GRPC
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case strings.HasPrefix(s, "redis:"):
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endpoint.Protocol = Redis
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case strings.HasPrefix(s, "kafka:"):
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endpoint.Protocol = Kafka
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case strings.HasPrefix(s, "amqp:"):
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endpoint.Protocol = AMQP
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case strings.HasPrefix(s, "amqps:"):
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endpoint.Protocol = AMQP
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case strings.HasPrefix(s, "mqtt:"):
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endpoint.Protocol = MQTT
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case strings.HasPrefix(s, "pubsub:"):
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endpoint.Protocol = PubSub
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case strings.HasPrefix(s, "sqs:"):
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endpoint.Protocol = SQS
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case strings.HasPrefix(s, "nats:"):
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endpoint.Protocol = NATS
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}
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s = s[strings.Index(s, ":")+1:]
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if !strings.HasPrefix(s, "//") {
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return endpoint, errors.New("missing the two slashes")
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}
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sqp := strings.Split(s[2:], "?")
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sp := strings.Split(sqp[0], "/")
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s = sp[0]
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if s == "" {
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if endpoint.Protocol == Local {
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return endpoint, errors.New("missing channel")
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}
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return endpoint, errors.New("missing host")
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}
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// Local PubSub channel
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// local://<channel>
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if endpoint.Protocol == Local {
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endpoint.Local.Channel = s
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}
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if endpoint.Protocol == GRPC {
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dp := strings.Split(s, ":")
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switch len(dp) {
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default:
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return endpoint, errors.New("invalid grpc url")
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case 1:
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endpoint.GRPC.Host = dp[0]
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endpoint.GRPC.Port = 80
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case 2:
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endpoint.GRPC.Host = dp[0]
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n, err := strconv.ParseUint(dp[1], 10, 16)
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if err != nil {
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return endpoint, errors.New("invalid grpc url")
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}
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endpoint.GRPC.Port = int(n)
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}
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}
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if endpoint.Protocol == Redis {
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dp := strings.Split(s, ":")
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switch len(dp) {
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default:
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return endpoint, errors.New("invalid redis url")
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case 1:
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endpoint.Redis.Host = dp[0]
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endpoint.Redis.Port = 6379
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case 2:
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endpoint.Redis.Host = dp[0]
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n, err := strconv.ParseUint(dp[1], 10, 16)
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if err != nil {
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return endpoint, errors.New("invalid redis url port")
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}
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endpoint.Redis.Port = int(n)
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}
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if len(sp) > 1 {
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var err error
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endpoint.Redis.Channel, err = url.QueryUnescape(sp[1])
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if err != nil {
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return endpoint, errors.New("invalid redis channel name")
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}
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}
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}
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if endpoint.Protocol == Disque {
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dp := strings.Split(s, ":")
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switch len(dp) {
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default:
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return endpoint, errors.New("invalid disque url")
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case 1:
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endpoint.Disque.Host = dp[0]
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endpoint.Disque.Port = 7711
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case 2:
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endpoint.Disque.Host = dp[0]
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n, err := strconv.ParseUint(dp[1], 10, 16)
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if err != nil {
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return endpoint, errors.New("invalid disque url")
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}
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endpoint.Disque.Port = int(n)
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}
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if len(sp) > 1 {
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var err error
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endpoint.Disque.QueueName, err = url.QueryUnescape(sp[1])
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if err != nil {
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return endpoint, errors.New("invalid disque queue name")
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}
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}
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if len(sqp) > 1 {
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m, err := url.ParseQuery(sqp[1])
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if err != nil {
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return endpoint, errors.New("invalid disque url")
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}
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for key, val := range m {
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if len(val) == 0 {
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continue
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}
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switch key {
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case "replicate":
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n, err := strconv.ParseUint(val[0], 10, 8)
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if err != nil {
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return endpoint, errors.New("invalid disque replicate value")
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}
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endpoint.Disque.Options.Replicate = int(n)
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}
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}
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}
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if endpoint.Disque.QueueName == "" {
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return endpoint, errors.New("missing disque queue name")
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}
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}
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if endpoint.Protocol == Kafka {
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// Parsing connection from URL string
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hp := strings.Split(s, ":")
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switch len(hp) {
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default:
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return endpoint, errors.New("invalid kafka url")
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case 1:
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endpoint.Kafka.Host = hp[0]
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endpoint.Kafka.Port = 9092
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case 2:
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n, err := strconv.ParseUint(hp[1], 10, 16)
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if err != nil {
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return endpoint, errors.New("invalid kafka url port")
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}
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endpoint.Kafka.Host = hp[0]
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endpoint.Kafka.Port = int(n)
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}
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// Parsing Kafka queue name
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if len(sp) > 1 {
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var err error
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endpoint.Kafka.TopicName, err = url.QueryUnescape(sp[1])
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if err != nil {
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return endpoint, errors.New("invalid kafka topic name")
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}
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}
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// Throw error if we not provide any queue name
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if endpoint.Kafka.TopicName == "" {
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return endpoint, errors.New("missing kafka topic name")
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}
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// Parsing additional params
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if len(sqp) > 1 {
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m, err := url.ParseQuery(sqp[1])
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if err != nil {
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return endpoint, errors.New("invalid kafka url")
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}
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for key, val := range m {
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if len(val) == 0 {
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continue
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}
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switch key {
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case "tls":
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endpoint.Kafka.TLS, _ = strconv.ParseBool(val[0])
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case "cacert":
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endpoint.Kafka.CACertFile = val[0]
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case "cert":
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endpoint.Kafka.CertFile = val[0]
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case "key":
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endpoint.Kafka.KeyFile = val[0]
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case "sasl":
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endpoint.Kafka.SASL, _ = strconv.ParseBool(val[0])
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case "sha256":
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endpoint.Kafka.SASLSHA256, _ = strconv.ParseBool(val[0])
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case "sha512":
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endpoint.Kafka.SASLSHA512, _ = strconv.ParseBool(val[0])
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}
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}
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}
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}
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if endpoint.Protocol == MQTT {
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// Parsing connection from URL string
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hp := strings.Split(s, ":")
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switch len(hp) {
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default:
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return endpoint, errors.New("invalid MQTT url")
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case 1:
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endpoint.MQTT.Host = hp[0]
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endpoint.MQTT.Port = 1883
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case 2:
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n, err := strconv.ParseUint(hp[1], 10, 16)
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if err != nil {
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return endpoint, errors.New("invalid MQTT url port")
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}
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endpoint.MQTT.Host = hp[0]
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endpoint.MQTT.Port = int(n)
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}
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// Parsing MQTT queue name
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if len(sp) > 1 {
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var err error
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var parts []string
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for _, part := range sp[1:] {
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part, err = url.QueryUnescape(part)
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if err != nil {
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return endpoint, errors.New("invalid MQTT topic name")
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}
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parts = append(parts, part)
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}
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endpoint.MQTT.QueueName = strings.Join(parts, "/")
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}
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// Parsing additional params
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if len(sqp) > 1 {
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m, err := url.ParseQuery(sqp[1])
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if err != nil {
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return endpoint, errors.New("invalid MQTT url")
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}
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for key, val := range m {
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if len(val) == 0 {
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continue
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}
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switch key {
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case "qos":
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n, err := strconv.ParseUint(val[0], 10, 8)
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if err != nil {
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return endpoint, errors.New("invalid MQTT qos value")
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}
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endpoint.MQTT.Qos = byte(n)
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case "retained":
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n, err := strconv.ParseUint(val[0], 10, 8)
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if err != nil {
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return endpoint, errors.New("invalid MQTT retained value")
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}
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if n != 1 && n != 0 {
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return endpoint, errors.New("invalid MQTT retained, should be [0, 1]")
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}
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if n == 1 {
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endpoint.MQTT.Retained = true
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}
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case "cacert":
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endpoint.MQTT.CACertFile = val[0]
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case "cert":
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endpoint.MQTT.CertFile = val[0]
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case "key":
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endpoint.MQTT.KeyFile = val[0]
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}
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}
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}
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// Throw error if we not provide any queue name
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if endpoint.MQTT.QueueName == "" {
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return endpoint, errors.New("missing MQTT topic name")
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}
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}
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// Basic SQS connection strings in HOOKS interface
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// sqs://<region>:<queue_id>/<queue_name>/?params=value
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//
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// params are:
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//
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// credpath - path where aws credentials are located
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// credprofile - credential profile
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if endpoint.Protocol == SQS {
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if endpoint.SQS.PlainURL == "" {
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// Parsing connection from URL string
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hp := strings.Split(s, ":")
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switch len(hp) {
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default:
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return endpoint, errors.New("invalid SQS url")
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case 2:
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endpoint.SQS.Region = hp[0]
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endpoint.SQS.QueueID = hp[1]
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}
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// Parsing SQS queue name
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if len(sp) > 1 {
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var err error
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endpoint.SQS.QueueName, err = url.QueryUnescape(sp[1])
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if err != nil {
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return endpoint, errors.New("invalid SQS queue name")
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}
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}
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// Throw error if we not provide any queue name
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if endpoint.SQS.QueueName == "" {
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return endpoint, errors.New("missing SQS queue name")
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}
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}
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// Parsing additional params
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if len(sqp) > 1 {
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m, err := url.ParseQuery(sqp[1])
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if err != nil {
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return endpoint, errors.New("invalid SQS url")
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}
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for key, val := range m {
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if len(val) == 0 {
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continue
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}
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switch key {
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case "credpath":
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endpoint.SQS.CredPath = val[0]
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case "credprofile":
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endpoint.SQS.CredProfile = val[0]
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case "createqueue":
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switch strings.ToLower(val[0]) {
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case "0", "false":
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default:
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endpoint.SQS.CreateQueue = true
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}
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}
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}
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}
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}
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// Basic Pubsub connection strings in HOOKS interface
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// pubsub://<project_name>:<topic_name>?params=value
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//
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// params are:
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//
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// credpath - path where gcp credentials are located
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if endpoint.Protocol == PubSub {
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split := strings.Split(s, ":")
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if len(split) != 2 {
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return endpoint, errors.New("invalid PubSub format should be project/topic")
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}
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endpoint.PubSub.Project = split[0]
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endpoint.PubSub.Topic = split[1]
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|
|
if len(sqp) > 1 {
|
|
m, err := url.ParseQuery(sqp[1])
|
|
if err != nil {
|
|
return endpoint, errors.New("invalid Pubsub url")
|
|
}
|
|
for key, val := range m {
|
|
if len(val) == 0 {
|
|
continue
|
|
}
|
|
switch key {
|
|
case "credpath":
|
|
endpoint.PubSub.CredPath = val[0]
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// Basic AMQP connection strings in HOOKS interface
|
|
// amqp://guest:guest@localhost:5672/<queue_name>/?params=value
|
|
// or amqp://guest:guest@localhost:5672/<namespace>/<queue_name>/?params=value
|
|
//
|
|
// Default params are:
|
|
//
|
|
// Mandatory - false
|
|
// Immeditate - false
|
|
// Durable - true
|
|
// Routing-Key - tile38
|
|
//
|
|
// - "route" - [string] routing key
|
|
//
|
|
if endpoint.Protocol == AMQP {
|
|
// Bind connection information
|
|
endpoint.AMQP.URI = s
|
|
endpoint.AMQP.Type = "direct"
|
|
endpoint.AMQP.Durable = true
|
|
endpoint.AMQP.DeliveryMode = amqp.Transient
|
|
|
|
// Fix incase of namespace, e.g. example.com/namespace/queue
|
|
// but not example.com/queue/ - with an endslash.
|
|
if len(sp) > 2 && len(sp[2]) > 0 {
|
|
endpoint.AMQP.URI = endpoint.AMQP.URI + "/" + sp[1]
|
|
sp = append([]string{endpoint.AMQP.URI}, sp[2:]...)
|
|
}
|
|
|
|
// Bind queue name with no namespace
|
|
if len(sp) > 1 {
|
|
var err error
|
|
endpoint.AMQP.QueueName, err = url.QueryUnescape(sp[1])
|
|
if err != nil {
|
|
return endpoint, errors.New("invalid AMQP queue name")
|
|
}
|
|
}
|
|
|
|
// Parsing additional attributes
|
|
if len(sqp) > 1 {
|
|
m, err := url.ParseQuery(sqp[1])
|
|
if err != nil {
|
|
return endpoint, errors.New("invalid AMQP url")
|
|
}
|
|
for key, val := range m {
|
|
if len(val) == 0 {
|
|
continue
|
|
}
|
|
switch key {
|
|
case "route":
|
|
endpoint.AMQP.RouteKey = val[0]
|
|
case "type":
|
|
endpoint.AMQP.Type = val[0]
|
|
case "durable":
|
|
endpoint.AMQP.Durable = queryBool(val[0])
|
|
case "internal":
|
|
endpoint.AMQP.Internal = queryBool(val[0])
|
|
case "no_wait":
|
|
endpoint.AMQP.NoWait = queryBool(val[0])
|
|
case "auto_delete":
|
|
endpoint.AMQP.AutoDelete = queryBool(val[0])
|
|
case "immediate":
|
|
endpoint.AMQP.Immediate = queryBool(val[0])
|
|
case "mandatory":
|
|
endpoint.AMQP.Mandatory = queryBool(val[0])
|
|
case "delivery_mode":
|
|
endpoint.AMQP.DeliveryMode = uint8(queryInt(val[0]))
|
|
case "priority":
|
|
endpoint.AMQP.Priority = uint8(queryInt(val[0]))
|
|
}
|
|
}
|
|
}
|
|
|
|
if strings.HasPrefix(endpoint.Original, "amqps:") {
|
|
endpoint.AMQP.SSL = true
|
|
}
|
|
|
|
if endpoint.AMQP.QueueName == "" {
|
|
return endpoint, errors.New("missing AMQP queue name")
|
|
}
|
|
|
|
if endpoint.AMQP.RouteKey == "" {
|
|
endpoint.AMQP.RouteKey = "tile38"
|
|
}
|
|
}
|
|
|
|
// Basic NATS connection strings in HOOKS interface
|
|
// nats://<host>:<port>/<topic_name>/?params=value
|
|
//
|
|
// params are:
|
|
//
|
|
// user - username
|
|
// pass - password
|
|
// when user or pass is not set then login without password is used
|
|
if endpoint.Protocol == NATS {
|
|
// Parsing connection from URL string
|
|
hp := strings.Split(s, ":")
|
|
switch len(hp) {
|
|
default:
|
|
return endpoint, errors.New("invalid SQS url")
|
|
case 2:
|
|
endpoint.NATS.Host = hp[0]
|
|
port, err := strconv.Atoi(hp[1])
|
|
if err != nil {
|
|
endpoint.NATS.Port = 4222 // default nats port
|
|
} else {
|
|
endpoint.NATS.Port = port
|
|
}
|
|
}
|
|
|
|
// Parsing NATS topic name
|
|
if len(sp) > 1 {
|
|
var err error
|
|
endpoint.NATS.Topic, err = url.QueryUnescape(sp[1])
|
|
if err != nil {
|
|
return endpoint, errors.New("invalid NATS topic name")
|
|
}
|
|
}
|
|
|
|
// Parsing additional params
|
|
if len(sqp) > 1 {
|
|
m, err := url.ParseQuery(sqp[1])
|
|
if err != nil {
|
|
return endpoint, errors.New("invalid NATS url")
|
|
}
|
|
for key, val := range m {
|
|
if len(val) == 0 {
|
|
continue
|
|
}
|
|
switch key {
|
|
case "user":
|
|
endpoint.NATS.User = val[0]
|
|
case "pass":
|
|
endpoint.NATS.Pass = val[0]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return endpoint, nil
|
|
}
|
|
|
|
func queryInt(s string) int {
|
|
x, _ := strconv.ParseInt(s, 10, 64)
|
|
return int(x)
|
|
}
|
|
|
|
func queryBool(s string) bool {
|
|
if len(s) > 0 {
|
|
if s[0] >= '1' && s[0] <= '9' {
|
|
return true
|
|
}
|
|
switch s[0] {
|
|
case 'Y', 'y', 'T', 't':
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|