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e8a008f5b5
Add Validate() to serverConfig to call it at server startup and in Admin SetConfig handler to minimize errors scenario after server restart.
135 lines
3.4 KiB
Go
135 lines
3.4 KiB
Go
/*
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* Minio Cloud Storage, (C) 2018 Minio, Inc.
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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 target
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import (
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"crypto/tls"
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"crypto/x509"
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"encoding/json"
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"errors"
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"net/url"
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"time"
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"github.com/eclipse/paho.mqtt.golang"
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"github.com/minio/minio/pkg/event"
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xnet "github.com/minio/minio/pkg/net"
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)
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// MQTTArgs - MQTT target arguments.
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type MQTTArgs struct {
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Enable bool `json:"enable"`
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Broker xnet.URL `json:"broker"`
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Topic string `json:"topic"`
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QoS byte `json:"qos"`
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ClientID string `json:"clientId"`
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User string `json:"username"`
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Password string `json:"password"`
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MaxReconnectInterval time.Duration `json:"reconnectInterval"`
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KeepAlive time.Duration `json:"keepAliveInterval"`
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RootCAs *x509.CertPool `json:"-"`
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}
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// Validate MQTTArgs fields
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func (m MQTTArgs) Validate() error {
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if !m.Enable {
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return nil
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}
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u, err := xnet.ParseURL(m.Broker.String())
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if err != nil {
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return err
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}
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switch u.Scheme {
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case "ws", "wss", "tcp", "ssl", "tls", "tcps":
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default:
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return errors.New("unknown protocol in broker address")
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}
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return nil
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}
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// MQTTTarget - MQTT target.
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type MQTTTarget struct {
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id event.TargetID
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args MQTTArgs
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client mqtt.Client
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}
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// ID - returns target ID.
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func (target *MQTTTarget) ID() event.TargetID {
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return target.id
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}
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// Send - sends event to MQTT.
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func (target *MQTTTarget) Send(eventData event.Event) error {
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if !target.client.IsConnected() {
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token := target.client.Connect()
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if token.Wait() {
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if err := token.Error(); err != nil {
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return err
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}
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}
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}
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objectName, err := url.QueryUnescape(eventData.S3.Object.Key)
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if err != nil {
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return err
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}
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key := eventData.S3.Bucket.Name + "/" + objectName
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data, err := json.Marshal(event.Log{eventData.EventName, key, []event.Event{eventData}})
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if err != nil {
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return err
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}
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token := target.client.Publish(target.args.Topic, target.args.QoS, false, string(data))
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if token.Wait() {
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return token.Error()
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}
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return nil
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}
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// Close - does nothing and available for interface compatibility.
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func (target *MQTTTarget) Close() error {
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return nil
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}
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// NewMQTTTarget - creates new MQTT target.
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func NewMQTTTarget(id string, args MQTTArgs) (*MQTTTarget, error) {
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options := mqtt.NewClientOptions().
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SetClientID(args.ClientID).
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SetCleanSession(true).
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SetUsername(args.User).
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SetPassword(args.Password).
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SetMaxReconnectInterval(args.MaxReconnectInterval).
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SetKeepAlive(args.KeepAlive).
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SetTLSConfig(&tls.Config{RootCAs: args.RootCAs}).
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AddBroker(args.Broker.String())
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client := mqtt.NewClient(options)
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token := client.Connect()
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if token.Wait() && token.Error() != nil {
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return nil, token.Error()
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}
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return &MQTTTarget{
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id: event.TargetID{id, "mqtt"},
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args: args,
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client: client,
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}, nil
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}
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