pusher-http-haskell- Haskell client library for the Pusher HTTP API

Copyright(c) Will Sewell, 2016
Safe HaskellNone




Exposes the functions necessary for interacting with the Pusher HTTP API, as well as functions for generating auth signatures for private and presence channels.

First create a Pusher data structure with your Pusher Credentials, and then call the functions defined in this module to make the HTTP requests.

If any of the requests fail, the return values of the functions will result in a Left PusherError when run.

An example of how you would use these functions:

    credentials = Credentials
      { credentialsAppID = 123
      , credentialsAppKey = wrd12344rcd234
      , credentialsAppSecret = 124df34d545v
  pusher <- getPusher credentials
  result <-
    trigger pusher [Channel Public "my-channel"] "my-event" "my-data" Nothing
  case result of
    Left e -> error e
    Right resp -> print resp

There is a simple working example in the example/ directory.

See https://pusher.com/docs/rest_api for more detail on the HTTP requests.


Data types

Pusher config type

data Pusher Source #

All the required configuration needed to interact with the API.

getPusher :: MonadIO m => Credentials -> m Pusher Source #

Use this to get an instance Pusher. This will fill in the host and path automatically.

getPusherWithHost :: MonadIO m => Text -> Credentials -> m Pusher Source #

Get a Pusher instance that uses a specific API endpoint.

getPusherWithConnManager :: Manager -> Maybe Text -> Credentials -> Pusher Source #

Get a Pusher instance with a given connection manager. This can be useful if you want to share a connection with your application code.


data Channel Source #

The channel name (not including the channel type prefix) and its type.


Eq Channel Source # 


(==) :: Channel -> Channel -> Bool #

(/=) :: Channel -> Channel -> Bool #

Show Channel Source # 
Generic Channel Source # 

Associated Types

type Rep Channel :: * -> * #


from :: Channel -> Rep Channel x #

to :: Rep Channel x -> Channel #

Arbitrary Channel Source # 
Hashable Channel Source # 


hashWithSalt :: Int -> Channel -> Int #

hash :: Channel -> Int #

type Rep Channel Source # 
type Rep Channel = D1 (MetaData "Channel" "Network.Pusher.Data" "pusher-http-haskell-" False) (C1 (MetaCons "Channel" PrefixI True) ((:*:) (S1 (MetaSel (Just Symbol "channelType") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 ChannelType)) (S1 (MetaSel (Just Symbol "channelName") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 ChannelName))))

data ChannelType Source #

The possible types of Pusher channe.




Eq ChannelType Source # 
Show ChannelType Source # 
Generic ChannelType Source # 

Associated Types

type Rep ChannelType :: * -> * #

Arbitrary ChannelType Source # 
Hashable ChannelType Source # 
type Rep ChannelType Source # 
type Rep ChannelType = D1 (MetaData "ChannelType" "Network.Pusher.Data" "pusher-http-haskell-" False) ((:+:) (C1 (MetaCons "Public" PrefixI False) U1) ((:+:) (C1 (MetaCons "Private" PrefixI False) U1) (C1 (MetaCons "Presence" PrefixI False) U1)))

parseChannel :: Text -> Channel Source #

Convert string representation, e.g. private-chan into the datatype


HTTP Requests

Trigger events

trigger Source #


:: MonadIO m 
=> Pusher 
-> [Channel]

The list of channels to trigger to

-> Event 
-> EventData

Often encoded JSON

-> Maybe SocketID

An optional socket ID of a connection you wish to exclude

-> m (Either PusherError ()) 

Trigger an event to one or more channels.

Channel queries

channels Source #


:: MonadIO m 
=> Pusher 
-> Maybe ChannelType

Filter by the type of channel

-> Text

A channel prefix you wish to filter on

-> ChannelsInfoQuery

Data you wish to query for, currently just the user count

-> m (Either PusherError ChannelsInfo)

The returned data

Query a list of channels for information.

channel Source #


:: MonadIO m 
=> Pusher 
-> Channel 
-> ChannelInfoQuery

Can query user count and also subscription count (if enabled)

-> m (Either PusherError FullChannelInfo) 

Query for information on a single channel.

users :: MonadIO m => Pusher -> Channel -> m (Either PusherError Users) Source #

Get a list of users in a presence channel.


type AuthString = ByteString Source #

The bytestring to sign with the app secret to create a signature from.

type AuthSignature = ByteString Source #

A Pusher auth signature.

authenticatePresence :: ToJSON a => Credentials -> SocketID -> Channel -> a -> AuthSignature Source #

Generate an auth signature of the form "app_key:auth_sig" for a user of a presence channel.

authenticatePrivate :: Credentials -> SocketID -> Channel -> AuthSignature Source #

Generate an auth signature of the form "app_key:auth_sig" for a user of a private channel.


data PusherError Source #


PusherArgumentError Text

Data from the caller is not valid.

PusherNon200ResponseError Text

Received non 200 response code from Pusher.

PusherInvalidResponseError Text

Received unexpected data from Pusher.