Safe Haskell	None
Language	Haskell2010

Database.InfluxDB.Manage

Contents

Management query interface
Query parameters
Management query results
- SHOW QUERIES
- SHOW SERIES

Synopsis

data Query
manage :: QueryParams -> Query -> IO ()
data QueryParams
queryParams :: Database -> QueryParams
server :: HasServer a => Lens' a Server
database :: HasDatabase a => Lens' a Database
precision :: HasPrecision ty a => Lens' a (Precision ty)
manager :: HasManager a => Lens' a (Either ManagerSettings Manager)
data ShowQuery
qid :: Lens' ShowQuery Int
queryText :: Lens' ShowQuery Query
duration :: Lens' ShowQuery NominalDiffTime
data ShowSeries
key :: Lens' ShowSeries Key

Management query interface

data Query Source #

An InfluxDB query.

A spec of the format is available at https://docs.influxdata.com/influxdb/v1.7/query_language/spec/.

A Query can be constructed using either

the IsString instance with -XOverloadedStrings
or formatQuery.

>>> :set -XOverloadedStrings
>>> "SELECT * FROM series" :: Query
"SELECT * FROM series"
>>> import qualified Database.InfluxDB.Format as F
>>> formatQuery ("SELECT * FROM "%F.key) "series"
"SELECT * FROM \"series\""

NOTE: Currently this library doesn't support type-safe query construction.

Instances

Show Query Source #
Instance details Defined in Database.InfluxDB.Types Methods showsPrec :: Int -> Query -> ShowS # show :: Query -> String # showList :: [Query] -> ShowS #
IsString Query Source #
Instance details Defined in Database.InfluxDB.Types Methods fromString :: String -> Query #

manage :: QueryParams -> Query -> IO () Source #

Send a database management query to InfluxDB.

>>> let db = "manage-test"
>>> let p = queryParams db
>>> manage p $ F.formatQuery ("CREATE DATABASE "%F.database) db

Query parameters

data QueryParams Source #

The full set of parameters for the query API

Following lenses are available to access its fields:

Instances

HasCredentials QueryParams Source #	Authentication info for the query `>>>` `let p = queryParams "foo"``>>>` `p ^. authentication`Nothing `>>>` `let p' = p & authentication ?~ credentials "john" "passw0rd"``>>>` `p' ^. authentication.traverse.user`"john"
Instance details Defined in Database.InfluxDB.Query Methods authentication :: Lens' QueryParams (Maybe Credentials) Source #
HasManager QueryParams Source #	`>>>` `let p = queryParams "foo" & manager .~ Left HC.defaultManagerSettings`
Instance details Defined in Database.InfluxDB.Query Methods manager :: Lens' QueryParams (Either ManagerSettings Manager) Source #
HasDatabase QueryParams Source #	`>>>` `let p = queryParams "foo"``>>>` `p ^. database`"foo"
Instance details Defined in Database.InfluxDB.Query Methods database :: Lens' QueryParams Database Source #
HasServer QueryParams Source #	`>>>` `let p = queryParams "foo"``>>>` `p ^. server.host`"localhost"
Instance details Defined in Database.InfluxDB.Query Methods server :: Lens' QueryParams Server Source #
HasPrecision QueryRequest QueryParams Source #	Returning JSON responses contain timestamps in the specified precision/format. `>>>` `let p = queryParams "foo"``>>>` `p ^. precision`RFC3339
Instance details Defined in Database.InfluxDB.Query Methods precision :: Lens' QueryParams (Precision QueryRequest) Source #

queryParams :: Database -> QueryParams Source #

Smart constructor for QueryParams

Default parameters:

server: defaultServer
precision: RFC3339
authentication: Nothing
manager: Left defaultManagerSettings
decoder: strictDecoder

server :: HasServer a => Lens' a Server Source #

InfluxDB server address and port that to interact with.

database :: HasDatabase a => Lens' a Database Source #

Database name to work on.

precision :: HasPrecision ty a => Lens' a (Precision ty) Source #

Time precision parameter.

manager :: HasManager a => Lens' a (Either ManagerSettings Manager) Source #

HTTP manager settings or a manager itself.

If it's set to ManagerSettings, the library will create a Manager from the settings for you.

Management query results

SHOW QUERIES

data ShowQuery Source #

>>> v <- query @ShowQuery (queryParams "_internal") "SHOW QUERIES"

Instances

HasDatabase ShowQuery Source #	`>>>` `v <- query @ShowQuery (queryParams "_internal") "SHOW QUERIES"``>>>` `v ^.. each.database`...
Instance details Defined in Database.InfluxDB.Manage Methods database :: Lens' ShowQuery Database Source #
QueryResults ShowQuery Source #
Instance details Defined in Database.InfluxDB.Manage Methods parseMeasurement :: Precision QueryRequest -> Maybe Text -> HashMap Text Text -> Vector Text -> Array -> Parser ShowQuery Source # coerceDecoder :: proxy ShowQuery -> Maybe Decoder Source #

qid :: Lens' ShowQuery Int Source #

Query ID

>>> v <- query @ShowQuery (queryParams "_internal") "SHOW QUERIES"
>>> v ^.. each.qid
...

queryText :: Lens' ShowQuery Query Source #

Query text

>>> v <- query @ShowQuery (queryParams "_internal") "SHOW QUERIES"
>>> v ^.. each.queryText
...

duration :: Lens' ShowQuery NominalDiffTime Source #

Duration of the query

>>> v <- query @ShowQuery (queryParams "_internal") "SHOW QUERIES"
>>> v ^.. each.duration
...

SHOW SERIES

data ShowSeries Source #

Instances

QueryResults ShowSeries Source #
Instance details Defined in Database.InfluxDB.Manage Methods parseMeasurement :: Precision QueryRequest -> Maybe Text -> HashMap Text Text -> Vector Text -> Array -> Parser ShowSeries Source # coerceDecoder :: proxy ShowSeries -> Maybe Decoder Source #

key :: Lens' ShowSeries Key Source #

Series name

>>> v <- query @ShowSeries (queryParams "_internal") "SHOW SERIES"
>>> length $ v ^.. each.key
...