ChannelHistoryModule always get blank

[sleepykid]

Are there any examples with the Channel History? I tried to use both the channel name and channel id, but get nothing back.

I'm trying to do the following, but get an empty list every time:

SlackSession session = SlackSessionFactory.createWebSocketSlackSession("token");
ChannelHistoryModule history = ChannelHistoryModuleFactory.createChannelHistoryModule(session);

session.addMessagePostedListener(new SlackMessagePostedListener()
{
    @Override
    public void onEvent(SlackMessagePosted event, SlackSession session)
    {
      System.out.println(event.getMessageContent()+" timestamp:"+event.getTimestamp());
      ChannelHistoryModule history = ChannelHistoryModuleFactory.createChannelHistoryModule(session);
      System.out.println(history);
      System.out.println("history:");
      System.out.println(history.fetchHistoryOfChannel(event.getChannel().getId()));
      List <SlackMessagePosted> messages = history.fetchHistoryOfChannel(event.getChannel().getId());
      for (int i = 0; i < messages.size(); i++) {
        SlackMessagePosted message=messages.get(i);
                    System.out.println(message.getChannel()+": "+message.getMessageContent()+" sender:"+message.getSender().getUserName());
    }

[bcorne]

Hi,

I should add some example on how to use it. But are you using a bot token or a full user token? Slack is not allowing bots to fetch history of channels, this might be the reason it is not working in your case.

Best regards,

Benoit

[sleepykid]

Hi Benoit,

Some examples would be really helpful. I'm using a bot token and able to do it in python via the python slacker wrapper api. But this java api seems to much more rich with features and wanted to migrate over. If bot tokens can't do it, a full user token would still be helpful.
thanks!
Andrew

[ggs-jan]

Hi,

Slack is not allowing bots to fetch history of channels

I can't confirm that. We are using bots to do just that: fetch the history of (public) channels.
Fetching the history even works when the bot is not a member of the channel.
However, when the bot should listen to channel events such as new messages, the bot needs to be added to the channel.

@andrew
Have you tried to fetch the history of a channel or of a group? I believe the ChannelHistoryModule currently only works for channels.

Regards,
Jan

[sleepykid]

Thanks for the suggestions.

Ok, so I got it down to 2 cases:

1. able to get the channel history of a channel that the bot is *_not *_a member of.
2. not able to get channel history of a channel that the bot is a member of

is this a configuration issue? or some sort of feature?

also, related, is there a way to get IM history of the bot?

[bcorne]

I'm working on this now

[bcorne]

ok, I've identified the issue, I confirm that this is only working fine for public channel, the issue beinf that the command to send to slack is different for private channels, I'll fix that soon then

[bcorne]

fixed with last commit