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influxdb.go
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influxdb.go
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package influxdb
import (
"fmt"
"log"
"net/url"
"strings"
"github.com/influxdb/influxdb/client"
t "github.com/influxdb/telegraf"
"github.com/influxdb/telegraf/outputs"
)
type InfluxDB struct {
URL string
Username string
Password string
Database string
UserAgent string
Timeout t.Duration
conn *client.Client
}
var sampleConfig = `
# The full HTTP endpoint URL for your InfluxDB instance
url = "http://localhost:8086" # required.
# The target database for metrics. This database must already exist
database = "telegraf" # required.
# Connection timeout (for the connection with InfluxDB), formatted as a string.
# Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".
# If not provided, will default to 0 (no timeout)
# timeout = "5s"
# username = "telegraf"
# password = "metricsmetricsmetricsmetrics"
# Set the user agent for the POSTs (can be useful for log differentiation)
# user_agent = "telegraf"
`
func (i *InfluxDB) Connect() error {
u, err := url.Parse(i.URL)
if err != nil {
return err
}
c, err := client.NewClient(client.Config{
URL: *u,
Username: i.Username,
Password: i.Password,
UserAgent: i.UserAgent,
Timeout: i.Timeout.Duration,
})
if err != nil {
return err
}
_, err = c.Query(client.Query{
Command: fmt.Sprintf("CREATE DATABASE %s", i.Database),
})
if err != nil && !strings.Contains(err.Error(), "database already exists") {
log.Fatal(err)
}
i.conn = c
return nil
}
func (i *InfluxDB) Close() error {
// InfluxDB client does not provide a Close() function
return nil
}
func (i *InfluxDB) SampleConfig() string {
return sampleConfig
}
func (i *InfluxDB) Description() string {
return "Configuration for influxdb server to send metrics to"
}
func (i *InfluxDB) Write(bp client.BatchPoints) error {
bp.Database = i.Database
if _, err := i.conn.Write(bp); err != nil {
return err
}
return nil
}
func init() {
outputs.Add("influxdb", func() outputs.Output {
return &InfluxDB{}
})
}