Couchbase input plugin

This commit is contained in:
Vebjorn Ljosa 2016-03-16 17:27:59 -04:00 committed by Cameron Sparr
parent 22073042a9
commit a043664dc4
4 changed files with 138 additions and 0 deletions

3
Godeps
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@ -5,6 +5,9 @@ github.com/amir/raidman 53c1b967405155bfc8758557863bf2e14f814687
github.com/aws/aws-sdk-go 13a12060f716145019378a10e2806c174356b857 github.com/aws/aws-sdk-go 13a12060f716145019378a10e2806c174356b857
github.com/beorn7/perks 3ac7bf7a47d159a033b107610db8a1b6575507a4 github.com/beorn7/perks 3ac7bf7a47d159a033b107610db8a1b6575507a4
github.com/cenkalti/backoff 4dc77674aceaabba2c7e3da25d4c823edfb73f99 github.com/cenkalti/backoff 4dc77674aceaabba2c7e3da25d4c823edfb73f99
github.com/couchbase/go-couchbase cb664315a324d87d19c879d9cc67fda6be8c2ac1
github.com/couchbase/gomemcached a5ea6356f648fec6ab89add00edd09151455b4b2
github.com/couchbase/goutils 5823a0cbaaa9008406021dc5daf80125ea30bba6
github.com/dancannon/gorethink e7cac92ea2bc52638791a021f212145acfedb1fc github.com/dancannon/gorethink e7cac92ea2bc52638791a021f212145acfedb1fc
github.com/davecgh/go-spew 5215b55f46b2b919f50a1df0eaa5886afe4e3b3d github.com/davecgh/go-spew 5215b55f46b2b919f50a1df0eaa5886afe4e3b3d
github.com/eapache/go-resiliency b86b1ec0dd4209a588dc1285cdd471e73525c0b3 github.com/eapache/go-resiliency b86b1ec0dd4209a588dc1285cdd471e73525c0b3

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@ -4,6 +4,7 @@ import (
_ "github.com/influxdata/telegraf/plugins/inputs/aerospike" _ "github.com/influxdata/telegraf/plugins/inputs/aerospike"
_ "github.com/influxdata/telegraf/plugins/inputs/apache" _ "github.com/influxdata/telegraf/plugins/inputs/apache"
_ "github.com/influxdata/telegraf/plugins/inputs/bcache" _ "github.com/influxdata/telegraf/plugins/inputs/bcache"
_ "github.com/influxdata/telegraf/plugins/inputs/couchbase"
_ "github.com/influxdata/telegraf/plugins/inputs/couchdb" _ "github.com/influxdata/telegraf/plugins/inputs/couchdb"
_ "github.com/influxdata/telegraf/plugins/inputs/disque" _ "github.com/influxdata/telegraf/plugins/inputs/disque"
_ "github.com/influxdata/telegraf/plugins/inputs/dns_query" _ "github.com/influxdata/telegraf/plugins/inputs/dns_query"

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@ -0,0 +1,46 @@
# Telegraf Plugin: Couchbase
### Configuration:
```
# Read per-node and per-bucket metrics from Couchbase
[[inputs.couchbase]]
## specify servers via a url matching:
## [protocol://][:password]@address[:port]
## e.g.
## http://couchbase-0.example.com/
## http://admin:secret@couchbase-0.example.com:8091/
##
## If no servers are specified, then localhost is used as the host.
## If no protocol is specifed, HTTP is used.
## If no port is specified, 8091 is used.
servers = ["http://localhost:8091"]
```
## Measurements:
### Per-node measurements
Meta:
- units: bytes
- tags: `cluster`, `hostname`
Measurement names:
- memory_free
- memory_total
### Per-bucket measurements
Meta:
- units: varies
- tags: `cluster`, `bucket`
Measurement names:
- quotaPercentUsed (unit: percent)
- opsPerSec (unit: count)
- diskFetches (unit: count)
- itemCount (unit: count)
- diskUsed (unit: bytes)
- dataUsed (unit: bytes)
- memUsed (unit: bytes)

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@ -0,0 +1,88 @@
package couchbase
import (
couchbase "github.com/couchbase/go-couchbase"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/plugins/inputs"
"sync"
)
type Couchbase struct {
Servers []string
}
var sampleConfig = `
## specify servers via a url matching:
## [protocol://][:password]@address[:port]
## e.g.
## http://couchbase-0.example.com/
## http://admin:secret@couchbase-0.example.com:8091/
##
## If no servers are specified, then localhost is used as the host.
## If no protocol is specifed, HTTP is used.
## If no port is specified, 8091 is used.
servers = ["http://localhost:8091"]
`
func (r *Couchbase) SampleConfig() string {
return sampleConfig
}
func (r *Couchbase) Description() string {
return "Read metrics from one or many couchbase clusters"
}
// Reads stats from all configured clusters. Accumulates stats.
// Returns one of the errors encountered while gathering stats (if any).
func (r *Couchbase) Gather(acc telegraf.Accumulator) error {
if len(r.Servers) == 0 {
r.gatherServer("http://localhost:8091/", acc)
return nil
}
var wg sync.WaitGroup
var outerr error
for _, serv := range r.Servers {
wg.Add(1)
go func(serv string) {
defer wg.Done()
outerr = r.gatherServer(serv, acc)
}(serv)
}
wg.Wait()
return outerr
}
func (r *Couchbase) gatherServer(addr string, acc telegraf.Accumulator) error {
client, err := couchbase.Connect(addr)
if err != nil {
return err
}
pool, err := client.GetPool("default")
if err != nil {
return err
}
for i := 0; i < len(pool.Nodes); i++ {
node := pool.Nodes[i]
tags := map[string]string{"cluster": addr, "hostname": node.Hostname}
fields := make(map[string]interface{})
fields["memory_free"] = node.MemoryFree
fields["memory_total"] = node.MemoryTotal
acc.AddFields("couchbase_node", fields, tags)
}
for bucketName, bucket := range pool.BucketMap {
tags := map[string]string{"cluster": addr, "bucket": bucketName}
acc.AddFields("couchbase_bucket", bucket.BasicStats, tags)
}
return nil
}
func init() {
inputs.Add("couchbase", func() telegraf.Input {
return &Couchbase{}
})
}