109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
package couchbase
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import (
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"regexp"
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"sync"
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couchbase "github.com/couchbase/go-couchbase"
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"github.com/influxdata/telegraf"
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"github.com/influxdata/telegraf/plugins/inputs"
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)
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type Couchbase struct {
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Servers []string
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}
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var sampleConfig = `
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## specify servers via a url matching:
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## [protocol://][:password]@address[:port]
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## e.g.
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## http://couchbase-0.example.com/
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## http://admin:secret@couchbase-0.example.com:8091/
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##
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## If no servers are specified, then localhost is used as the host.
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## If no protocol is specified, HTTP is used.
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## If no port is specified, 8091 is used.
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servers = ["http://localhost:8091"]
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`
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var regexpURI = regexp.MustCompile(`(\S+://)?(\S+\:\S+@)`)
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func (r *Couchbase) SampleConfig() string {
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return sampleConfig
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}
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func (r *Couchbase) Description() string {
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return "Read metrics from one or many couchbase clusters"
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}
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// Reads stats from all configured clusters. Accumulates stats.
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// Returns one of the errors encountered while gathering stats (if any).
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func (r *Couchbase) Gather(acc telegraf.Accumulator) error {
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if len(r.Servers) == 0 {
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r.gatherServer("http://localhost:8091/", acc, nil)
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return nil
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}
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var wg sync.WaitGroup
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for _, serv := range r.Servers {
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wg.Add(1)
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go func(serv string) {
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defer wg.Done()
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acc.AddError(r.gatherServer(serv, acc, nil))
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}(serv)
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}
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wg.Wait()
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return nil
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}
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func (r *Couchbase) gatherServer(addr string, acc telegraf.Accumulator, pool *couchbase.Pool) error {
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if pool == nil {
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client, err := couchbase.Connect(addr)
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if err != nil {
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return err
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}
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// `default` is the only possible pool name. It's a
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// placeholder for a possible future Couchbase feature. See
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// http://stackoverflow.com/a/16990911/17498.
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p, err := client.GetPool("default")
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if err != nil {
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return err
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}
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pool = &p
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}
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for i := 0; i < len(pool.Nodes); i++ {
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node := pool.Nodes[i]
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tags := map[string]string{"cluster": regexpURI.ReplaceAllString(addr, "${1}"), "hostname": node.Hostname}
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fields := make(map[string]interface{})
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fields["memory_free"] = node.MemoryFree
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fields["memory_total"] = node.MemoryTotal
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acc.AddFields("couchbase_node", fields, tags)
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}
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for bucketName := range pool.BucketMap {
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tags := map[string]string{"cluster": regexpURI.ReplaceAllString(addr, "${1}"), "bucket": bucketName}
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bs := pool.BucketMap[bucketName].BasicStats
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fields := make(map[string]interface{})
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fields["quota_percent_used"] = bs["quotaPercentUsed"]
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fields["ops_per_sec"] = bs["opsPerSec"]
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fields["disk_fetches"] = bs["diskFetches"]
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fields["item_count"] = bs["itemCount"]
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fields["disk_used"] = bs["diskUsed"]
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fields["data_used"] = bs["dataUsed"]
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fields["mem_used"] = bs["memUsed"]
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acc.AddFields("couchbase_bucket", fields, tags)
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}
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return nil
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}
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func init() {
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inputs.Add("couchbase", func() telegraf.Input {
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return &Couchbase{}
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})
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}
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