forked from elastic/beats
-
Notifications
You must be signed in to change notification settings - Fork 0
/
logstash.go
194 lines (162 loc) · 4.85 KB
/
logstash.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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
package logstash
// logstash.go defines the logtash plugin (using lumberjack protocol) as being
// registered with all output plugins
import (
"expvar"
"time"
"github.com/elastic/go-lumber/log"
"github.com/elastic/beats/libbeat/common"
"github.com/elastic/beats/libbeat/common/op"
"github.com/elastic/beats/libbeat/logp"
"github.com/elastic/beats/libbeat/outputs"
"github.com/elastic/beats/libbeat/outputs/mode"
"github.com/elastic/beats/libbeat/outputs/mode/modeutil"
"github.com/elastic/beats/libbeat/outputs/transport"
)
var debug = logp.MakeDebug("logstash")
// Metrics that can retrieved through the expvar web interface.
var (
ackedEvents = expvar.NewInt("libbeat.logstash.published_and_acked_events")
eventsNotAcked = expvar.NewInt("libbeat.logstash.published_but_not_acked_events")
publishEventsCallCount = expvar.NewInt("libbeat.logstash.call_count.PublishEvents")
statReadBytes = expvar.NewInt("libbeat.logstash.publish.read_bytes")
statWriteBytes = expvar.NewInt("libbeat.logstash.publish.write_bytes")
statReadErrors = expvar.NewInt("libbeat.logstash.publish.read_errors")
statWriteErrors = expvar.NewInt("libbeat.logstash.publish.write_errors")
)
const (
defaultWaitRetry = 1 * time.Second
// NOTE: maxWaitRetry has no effect on mode, as logstash client currently does
// not return ErrTempBulkFailure
defaultMaxWaitRetry = 60 * time.Second
)
func init() {
log.Logger = logstashLogger{}
outputs.RegisterOutputPlugin("logstash", new)
}
func new(beatName string, cfg *common.Config, _ int) (outputs.Outputer, error) {
if !cfg.HasField("index") {
cfg.SetString("index", -1, beatName)
}
output := &logstash{}
if err := output.init(cfg); err != nil {
return nil, err
}
return output, nil
}
type logstash struct {
mode mode.ConnectionMode
index string
}
func (lj *logstash) init(cfg *common.Config) error {
config := defaultConfig
if err := cfg.Unpack(&config); err != nil {
return err
}
tls, err := outputs.LoadTLSConfig(config.TLS)
if err != nil {
return err
}
transp := &transport.Config{
Timeout: config.Timeout,
Proxy: &config.Proxy,
TLS: tls,
Stats: &transport.IOStats{
Read: statReadBytes,
Write: statWriteBytes,
ReadErrors: statReadErrors,
WriteErrors: statWriteErrors,
},
}
logp.Info("Max Retries set to: %v", config.MaxRetries)
m, err := initConnectionMode(cfg, &config, transp)
if err != nil {
return err
}
lj.mode = m
lj.index = config.Index
return nil
}
func initConnectionMode(
cfg *common.Config,
config *logstashConfig,
transp *transport.Config,
) (mode.ConnectionMode, error) {
sendRetries := config.MaxRetries
maxAttempts := sendRetries + 1
if sendRetries < 0 {
maxAttempts = 0
}
settings := modeutil.Settings{
Failover: !config.LoadBalance,
MaxAttempts: maxAttempts,
Timeout: config.Timeout,
WaitRetry: defaultWaitRetry,
MaxWaitRetry: defaultMaxWaitRetry,
}
if config.Pipelining == 0 {
clients, err := modeutil.MakeClients(cfg, makeClientFactory(config, transp))
if err != nil {
return nil, err
}
return modeutil.NewConnectionMode(clients, settings)
}
clients, err := modeutil.MakeAsyncClients(cfg, makeAsyncClientFactory(config, transp))
if err != nil {
return nil, err
}
return modeutil.NewAsyncConnectionMode(clients, settings)
}
func makeClientFactory(
cfg *logstashConfig,
tcfg *transport.Config,
) modeutil.ClientFactory {
compressLvl := cfg.CompressionLevel
maxBulkSz := cfg.BulkMaxSize
to := cfg.Timeout
return func(host string) (mode.ProtocolClient, error) {
t, err := transport.NewClient(tcfg, "tcp", host, cfg.Port)
if err != nil {
return nil, err
}
return newLumberjackClient(t, compressLvl, maxBulkSz, to, cfg.Index)
}
}
func makeAsyncClientFactory(
cfg *logstashConfig,
tcfg *transport.Config,
) modeutil.AsyncClientFactory {
compressLvl := cfg.CompressionLevel
maxBulkSz := cfg.BulkMaxSize
queueSize := cfg.Pipelining - 1
to := cfg.Timeout
return func(host string) (mode.AsyncProtocolClient, error) {
t, err := transport.NewClient(tcfg, "tcp", host, cfg.Port)
if err != nil {
return nil, err
}
return newAsyncLumberjackClient(t, queueSize, compressLvl, maxBulkSz, to, cfg.Index)
}
}
func (lj *logstash) Close() error {
return lj.mode.Close()
}
// TODO: update Outputer interface to support multiple events for batch-like
// processing (e.g. for filebeat). Batch like processing might reduce
// send/receive overhead per event for other implementors too.
func (lj *logstash) PublishEvent(
signaler op.Signaler,
opts outputs.Options,
data outputs.Data,
) error {
return lj.mode.PublishEvent(signaler, opts, data)
}
// BulkPublish implements the BulkOutputer interface pushing a bulk of events
// via lumberjack.
func (lj *logstash) BulkPublish(
trans op.Signaler,
opts outputs.Options,
data []outputs.Data,
) error {
return lj.mode.PublishEvents(trans, opts, data)
}