Message Reactions API for Go SDK

Add or remove reactions on published messages to build features like receipts, reactions, or to associate custom metadata to messages. Clients can subscribe to a channel to receive message reaction events on that channel. They can also fetch past message reactions from Message Persistence independently or when they fetch original messages.

Terminology

All message reactions in code are collectively called message reactions in the docs and the term applies both to reacting to a message (through emojis) and acting on a message (by deleting it).

Add Message Reaction

Requires Message Persistence

This method requires that Message Persistence is enabled for your key in the Admin Portal.

Add an action on a published message. Returns the added action in the response.

Method(s)

To Add a Message Reaction you can use the following method(s) in the Go SDK:

pn.AddMessageAction().
    Channel(string).
    MessageTimetoken(string).
    Action(pubnub.MessageAction).
    Execute()

* required

Parameter	Description
Channel * Type: string	The channel name.
MessageTimetoken * Type: string	The publish timetoken of a parent message.
Action * Type: pubnub.MessageAction	Message Reaction Details :-ActionType: What feature this action represents -- max 15 characters. ActionValue: Details about the action -- max 40 characters.

Basic Usage

Reference code

This example is a self-contained code snippet ready to be run. It includes necessary imports and executes methods with console logging. Use it as a reference when working with other examples in this document.

package main

import (
	"fmt"
	"log"

	pubnub "github.com/pubnub/go/v7"
)

func main() {
	// Configure the PubNub instance with demo keys
	config := pubnub.NewConfigWithUserId("myUniqueUserId")
	config.SubscribeKey = "demo"
	config.PublishKey = "demo"

show all 45 lines

Returns

The AddMessageAction() operation returns a PNAddMessageActionsResponse which contains the following parameters:

Property Name	Type	Description
Data	PNMessageActionsResponse	Details of type PNMessageActionsResponse are here

PNMessageActionsResponse

Property Name	Type	Description
ActionType	string	What feature this action represents.
ActionValue	string	Details about the action.
ActionTimetoken	string	The timetoken when the action was added.
MessageTimetoken	string	The timetoken of the parent message.

Remove Message Reaction

Requires Message Persistence

This method requires that Message Persistence is enabled for your key in the Admin Portal.

Remove a previously added action on a published message. Returns an empty response.

Method(s)

To Remove a Message Reaction you can use the following method(s) in the Go SDK:

pn.RemoveMessageAction().
    Channel(string).
    MessageTimetoken(string).
    ActionTimetoken(string).
    Execute()

* required

Parameter	Description
Channel * Type: string	The channel name.
MessageTimetoken * Type: string	The publish timetoken of a parent message.
ActionTimetoken * Type: string	The publish timetoken of the action.

Basic Usage

res, status, err := pn.RemoveMessageAction()
    .Channel("my-channel")
    .MessageTimetoken("15698453963258802")
    .ActionTimetoken("15698453963258812")
    .Execute()

Returns

The RemoveMessageAction() operation returns a PNRemoveMessageActionsResponse which contains the following parameters:

Property Name	Type	Description
Data	interface	Returns an empty interface.

Get Message Reactions

Requires Message Persistence

This method requires that Message Persistence is enabled for your key in the Admin Portal.

Get a list of message reactions in a channel. Returns a list of actions sorted by the action's timetoken in ascending order.

Truncated response

Number of message reactions in the response may be truncated when internal limits are hit. If the response is truncated, a more property will be returned with additional parameters. Send iterative calls to Message Persistence adjusting the parameters to fetch more message reactions.

Method(s)

To Get Message Reactions you can use the following method(s) in the Go SDK:

pn.GetMessageActions().
    Channel(string).
    Start(string).
    End(string).
    Limit(int).
    Execute()

* required

Parameter	Description
Channel * Type: string	The channel name.
Start Type: string	Action timetoken denoting the start of the range requested (return values will be less than start).
End Type: string	Action timetoken denoting the end of the range requested (return values will be greater than or equal to end).
Limit Type: int	Number of actions to return in response..

Basic Usage

res, status, err := pn.GetMessageActions()
    .Channel("my-channel")
    .Start("15698453963258812")
    .End("15698453963258811")
    .Execute()

Returns

The GetMessageActions() operation returns a PNGetMessageActionsResponse which contains the following parameters:

Property Name	Type	Description
Data	[]PNMessageActionsResponse	Details of type PNMessageActionsResponse are here
More	PNGetMessageActionsMore	Details of type PNGetMessageActionsMore are here

PNGetMessageActionsMore

Property Name	Type	Description
URL	string	The URL of the next set of results.
Start	string	The start param for the next set of results.
End	string	The end param for the next set of results.
Limit	int	The limit for the next set of results.