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From: Sven Eckelmann <sven@narfation.org>
Date: Sun, 04 Oct 2015 18:17:56 +0200
Message-ID: <5450614.1BWUbN25GJ@sven-edge>
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Subject: Re: [B.A.T.M.A.N.] Alfred update-command
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To: Anatoliy Lapitskiy <anatoliy.lapitskiy@gmail.com>, Dominik Heidler <dominik@heidler.eu>
Cc: b.a.t.m.a.n@lists.open-mesh.org

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On Sunday 04 October 2015 16:23:28 Dominik Heidler wrote:
> Hi,
> 
> I tried to use the alfred update-command but it seems that the
> update-command is only triggered when data is purged but not when new
> data is received.
> 
> The changed_data_type() method is only called from the purge_data() method.
[...]

Nope, see finish_alfred_push_data (when data was synced to a master node):

		/* check that data was changed */
		if (new_entry_created ||
		    dataset->data.header.length != data_len ||
		    memcmp(dataset->buf, data->data, data_len) != 0)
			changed_data_type(globals, data->header.type);

It is useless on slave instances because they only pull data when it is 
required. But better ask Anatoliy because he is creator of this feature and 
the only one I know who seems to use it.

Kind regards,
	Sven
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