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AMQP Consumer plugin (#1678)

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This commit is contained in:
Jack Zampolin
2017-03-03 10:24:50 -08:00
committed by Daniel Nelson
parent 1873abd248
commit 10744646db
7 changed files with 357 additions and 6 deletions
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11
plugins/outputs/amqp/README.md
View File

@@ -1,13 +1,18 @@
# AMQP Output Plugin
This plugin writes to a AMQP exchange using tag, defined in configuration file
as RoutingTag, as a routing key.
This plugin writes to a AMQP 0-9-1 Exchange, a promenent implementation of this protocol being [RabbitMQ](https://www.rabbitmq.com/).
Metrics are written to a topic exchange using tag, defined in configuration file as RoutingTag, as a routing key.
If RoutingTag is empty, then empty routing key will be used.
Metrics are grouped in batches by RoutingTag.
This plugin doesn't bind exchange to a queue, so it should be done by consumer.
For an introduction to AMQP see:
- https://www.rabbitmq.com/tutorials/amqp-concepts.html
- https://www.rabbitmq.com/getstarted.html
### Configuration:
```
@@ -18,6 +23,8 @@ This plugin doesn't bind exchange to a queue, so it should be done by consumer.
## AMQP exchange
exchange = "telegraf"
## Auth method. PLAIN and EXTERNAL are supported
## Using EXTERNAL requires enabling the rabbitmq_auth_mechanism_ssl plugin as
## described here: https://www.rabbitmq.com/plugins.html
# auth_method = "PLAIN"
## Telegraf tag to use as a routing key
## ie, if this tag exists, it's value will be used as the routing key

20
plugins/outputs/amqp/amqp.go
View File

@@ -40,6 +40,7 @@ type AMQP struct {
// Use SSL but skip chain & host verification
InsecureSkipVerify bool
conn *amqp.Connection
channel *amqp.Channel
sync.Mutex
headers amqp.Table
@@ -68,6 +69,8 @@ var sampleConfig = `
## AMQP exchange
exchange = "telegraf"
## Auth method. PLAIN and EXTERNAL are supported
## Using EXTERNAL requires enabling the rabbitmq_auth_mechanism_ssl plugin as
## described here: https://www.rabbitmq.com/plugins.html
# auth_method = "PLAIN"
## Telegraf tag to use as a routing key
## ie, if this tag exists, it's value will be used as the routing key
@@ -129,6 +132,8 @@ func (q *AMQP) Connect() error {
if err != nil {
return err
}
q.conn = connection
channel, err := connection.Channel()
if err != nil {
return fmt.Errorf("Failed to open a channel: %s", err)
@@ -148,7 +153,11 @@ func (q *AMQP) Connect() error {
}
q.channel = channel
go func() {
log.Printf("I! Closing: %s", <-connection.NotifyClose(make(chan *amqp.Error)))
err := <-connection.NotifyClose(make(chan *amqp.Error))
if err == nil {
return
}
log.Printf("I! Closing: %s", err)
log.Printf("I! Trying to reconnect")
for err := q.Connect(); err != nil; err = q.Connect() {
log.Println("E! ", err.Error())
@@ -160,7 +169,12 @@ func (q *AMQP) Connect() error {
}
func (q *AMQP) Close() error {
return q.channel.Close()
err := q.conn.Close()
if err != nil && err != amqp.ErrClosed {
log.Printf("E! Error closing AMQP connection: %s", err)
return err
}
return nil
}
func (q *AMQP) SampleConfig() string {
@@ -207,7 +221,7 @@ func (q *AMQP) Write(metrics []telegraf.Metric) error {
Body: buf,
})
if err != nil {
return fmt.Errorf("FAILED to send amqp message: %s", err)
return fmt.Errorf("Failed to send AMQP message: %s", err)
}
}
return nil