109 lines
2.7 KiB
Go
109 lines
2.7 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016 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 cmd
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import (
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"io/ioutil"
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"github.com/Sirupsen/logrus"
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"github.com/nats-io/nats"
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)
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// natsNotify - represents logrus compatible NATS hook.
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// All fields represent NATS configuration details.
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type natsNotify struct {
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Enable bool `json:"enable"`
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Address string `json:"address"`
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Subject string `json:"subject"`
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Username string `json:"username"`
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Password string `json:"password"`
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Token string `json:"token"`
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Secure bool `json:"secure"`
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PingInterval int64 `json:"pingInterval"`
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}
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type natsConn struct {
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params natsNotify
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*nats.Conn
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}
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// dialNATS - dials and returns an natsConn instance,
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// for sending notifications. Returns error if nats logger
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// is not enabled.
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func dialNATS(natsL natsNotify) (natsConn, error) {
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if !natsL.Enable {
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return natsConn{}, errNotifyNotEnabled
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}
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// Configure and connect to NATS server
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natsC := nats.DefaultOptions
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natsC.Url = "nats://" + natsL.Address
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natsC.User = natsL.Username
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natsC.Password = natsL.Password
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natsC.Token = natsL.Token
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natsC.Secure = natsL.Secure
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conn, err := natsC.Connect()
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if err != nil {
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return natsConn{}, err
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}
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return natsConn{Conn: conn, params: natsL}, nil
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}
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func newNATSNotify(accountID string) (*logrus.Logger, error) {
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natsL := serverConfig.GetNATSNotifyByID(accountID)
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// Connect to nats server.
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natsC, err := dialNATS(natsL)
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if err != nil {
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return nil, err
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}
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natsLog := logrus.New()
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// Disable writing to console.
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natsLog.Out = ioutil.Discard
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// Add a nats hook.
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natsLog.Hooks.Add(natsC)
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// Set default JSON formatter.
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natsLog.Formatter = new(logrus.JSONFormatter)
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// Successfully enabled all NATSs.
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return natsLog, nil
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}
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// Fire is called when an event should be sent to the message broker
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func (n natsConn) Fire(entry *logrus.Entry) error {
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ch := n.Conn
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body, err := entry.Reader()
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if err != nil {
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return err
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}
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err = ch.Publish(n.params.Subject, body.Bytes())
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if err != nil {
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return err
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}
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return nil
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}
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// Levels is available logging levels.
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func (n natsConn) Levels() []logrus.Level {
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return []logrus.Level{
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logrus.InfoLevel,
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}
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}
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