InfluxDB Sink

The sink will publish the result into a InfluxDB.

Properties

Connection properties:

Property name	Optional	Description
addr	false	The addr of the InfluxDB
username	true	The InfluxDB login username
password	true	The InfluxDB login password
database	false	The database of the InfluxDB
certificationPath	true	The certification path. It can be an absolute path, or a relative path. If it is an relative path, then the base path is where you executing the kuiperd command. For example, if you run bin/kuiperd from /var/kuiper, then the base path is /var/kuiper; If you run ./kuiperd from /var/kuiper/bin, then the base path is /var/kuiper/bin.
privateKeyPath	true	The private key path. It can be either absolute path, or relative path, which is similar to use of certificationPath.
rootCaPath	true	The location of root ca path. It can be an absolute path, or a relative path, which is similar to use of certificationPath.
tlsMinVersion	true	Specifies the minimum version of the TLS protocol that will be negotiated with the client. Accept values are tls1.0, tls1.1, tls1.2 and tls1.3. Default: tls1.2.
renegotiationSupport	true	Determines how and when the client handles server-initiated renegotiation requests. Support never, once or freely options. Default: never.
insecureSkipVerify	true	If InsecureSkipVerify is true, TLS accepts any certificate presented by the server and any host name in that certificate. In this mode, TLS is susceptible to man-in-the-middle attacks. The default value is false. The configuration item can only be used with TLS connections.

Write options:

Property name	Optional	Description
measurement	false	The measurement of the InfluxDb (like table name)
tags	true	The tags to write, the format is like {"tag1":"value1"}. The value can be dataTemplate format, like {"tag1":"{{.temperature}}"}
fields	true	The fields to write, the format is like ["field1", "field2"]. If fields is not set, all fields selected in the SQL will all written to InfluxDB.
precision	true	The precision of the timestamp. Support ns, us, ms, s. Default: ms.
tsFieldName	true	The field name of the timestamp. If set, the written timestamp will use the value of the field. For example, if the data has {"ts": 1888888888} and the tsFieldName is set to ts, then the value 1888888888 will be used when written to InfluxDB. Make sure the value is formatted according to the precision. If not set, the current timestamp will be used.

Other common sink properties including batch settings are supported. Please refer to the sink common properties for more information.

Sample usage

Below is a sample for selecting temperature greater than 50 degree and write into influxDB.

{
  "id": "influx",
  "sql": "SELECT * from demo_stream where temperature > 50",
  "actions": [
    {
      "log": {},
      "influx":{
       "addr": "http://192.168.100.245:8086",
       "username": "",
       "password": "",
       "measurement": "test",
        "database": "databasename",
        "tags": "{\"tag1\":\"value1\"}",
       "fields": ["humidity", "temperature", "pressure"]
      }
    }
  ]
}