ChannelReceiverFunction

ChannelReceiverFunction[fun]

represents a channel receiver function that applies fun to any channel message it receives.

Details and Options

  • CloudDeploy[ChannelReceiverFunction[…]] yields a CloudObject containing meta-information that specifies the channel to which messages for the channel receiver should be sent.
  • CloudDeploy[ChannelReceiverFunction[…]"curi"] deploys the receiver to ChannelObject["curi"].
  • CloudDeploy[ChannelReceiverFunction[…]channel] deploys the receiver to the specified channel, given as ChannelObject[…].
  • CloudDeploy[ChannelReceiverFunction[…]] is equivalent to CloudDeploy[ChannelReceiverFunction[…]Automatic].
  • In a deployed ChannelReceiverFunction[fun], fun[assoc] is evaluated whenever a channel message is received. The association assoc contains the same elements as in ChannelListen, except for ones specific to the ChannelListener object.
  • CloudDeploy[ChannelReceiverFunction[fun]] sets up a channel receiver function that is executed in the cloud and does not require active listeners in any specific Wolfram Language session.
  • The function fun is evaluated in the environment of the owner of the channel receiver function.

Examples

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Basic Examples  (2)

Define a receiver function:

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Apply the function to an association representing a channel broker message:

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Define a receiver function that logs the incoming message to a cloud object:

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Deploy the function:

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Obtain the target channel of the receiver:

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Send a message to the channel:

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Check the cloud object:

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Scope  (7)

Applications  (3)

Properties & Relations  (1)

See Also

ChannelListen  MailReceiverFunction  APIFunction  ChannelDatabin  ChannelBrokerAction

Introduced in 2017
(11.2)