-
Notifications
You must be signed in to change notification settings - Fork 2
/
client.go
125 lines (114 loc) · 3.5 KB
/
client.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package pulsar
import (
"context"
"fmt"
"time"
"github.com/apache/pulsar-client-go/pulsar"
"github.com/elastic/beats/libbeat/beat"
"github.com/elastic/beats/libbeat/logp"
"github.com/elastic/beats/libbeat/outputs"
"github.com/elastic/beats/libbeat/outputs/codec"
"github.com/elastic/beats/libbeat/publisher"
)
type client struct {
clientOptions pulsar.ClientOptions
producerOptions pulsar.ProducerOptions
pulsarClient pulsar.Client
producer pulsar.Producer
observer outputs.Observer
beat beat.Info
config *pulsarConfig
codec codec.Codec
}
func newPulsarClient(
beat beat.Info,
observer outputs.Observer,
clientOptions pulsar.ClientOptions,
producerOptions pulsar.ProducerOptions,
config *pulsarConfig,
) (*client, error) {
c := &client{
clientOptions: clientOptions,
producerOptions: producerOptions,
observer: observer,
beat: beat,
config: config,
}
return c, nil
}
func (c *client) Connect() error {
var err error
c.pulsarClient, err = pulsar.NewClient(c.clientOptions)
logp.Info("start create pulsar client")
if err != nil {
logp.Debug("pulsar", "Create pulsar client failed: %v", err)
return err
}
logp.Info("start create pulsar producer")
c.producer, err = c.pulsarClient.CreateProducer(c.producerOptions)
if err != nil {
logp.Debug("pulsar", "Create pulsar producer failed: %v", err)
return err
}
logp.Info("start create encoder")
c.codec, err = codec.CreateEncoder(c.beat, c.config.Codec)
if err != nil {
logp.Debug("pulsar", "Create encoder failed: %v", err)
return err
}
return nil
}
func (c *client) Close() error {
c.pulsarClient.Close()
return nil
}
func (c *client) Publish(batch publisher.Batch) error {
defer batch.ACK()
events := batch.Events()
c.observer.NewBatch(len(events))
dropped := 0
logp.Debug("pulsar", "Pulsar received events: %d", len(events))
for i := range events {
event := &events[i]
serializedEvent, err := c.codec.Encode(c.beat.Beat, &event.Content)
if err != nil {
dropped++
logp.Err("Failed event: %v, error: %v", event, err)
}
logp.Debug("pulsar", "Pulsar success encode events: %d", i)
messageID, err := c.producer.Send(context.Background(), &pulsar.ProducerMessage{
Key: fmt.Sprintf("%d", time.Now().Unix()),
Payload: []byte(serializedEvent),
})
logp.Debug("pulsar", "Pulsar success send events: %d and messageID: %s ", i, messageID)
if err != nil {
dropped++
logp.Err("produce send failed: %v", err)
}
}
c.observer.Dropped(dropped)
c.observer.Acked(len(events) - dropped)
logp.Debug("pulsar", "Pulsar success send events: %d", len(events))
return nil
}
func (c *client) String() string {
return "file(" + c.clientOptions.URL + ")"
}