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<p>+1 for things easier for ARI developers coming from web world<br>
</p>
<p>and ... we look forward to "sample speech to text application" :)<br>
</p>
<p>have a nice weekend</p>
<p>Marek<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Dne 18/10/2019 v 14:55 George Joseph
napsal(a):<br>
</div>
<blockquote type="cite"
cite="mid:CAP=uFEuM_Xut18q6csUhTi6z5RiQKDOja64CaW56KF8YwqXTvA@mail.gmail.com">
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<div dir="ltr">When we created the External Media addition to ARI
we created an ExternalMedia object to be returned from the
channels/externalMedia REST endpoint. This object contained the
channel object that was created plus local_address and
local_port attributes (which are also in the Channel
variables). At the time, we thought that creating an
ExternalMedia object would give us more flexibility in the
future but as we created the sample speech to text application,
we discovered that it doesn't work so well with ARI client
libraries that a) don't have the ExternalMedia object defined
and/or b) can't promote the embedded channel structure to a
first-class Channel object.
<div>
<div><br>
</div>
<div>Example:</div>
<div><br>
</div>
<div>A common pattern using the node-ari-client is to create a
new Channel object, attach an event handler to it, then call
originate on it like so...</div>
<div><br>
</div>
<div><font face="monospace">chan = ari.channels.Channel();<br>
</font></div>
<div><font face="monospace">chan.on('StasisStart', <add
chan to bridge>);</font></div>
<div><font face="monospace">chan.originate(...);</font></div>
<div><br>
</div>
<div>With the current ExternalMedia API:</div>
<div><br>
</div>
<div>
<div><font face="monospace">chan = ari.channels.Channel();</font></div>
<div><font face="monospace">chan.on('StasisStart', <add
chan to bridge>);</font></div>
<div><font face="monospace">chan.externalMedia(...);</font></div>
<div><br>
</div>
<div>This doesn't work however because the return from
channels/externalMedia isn't a Channel. It's an
ExternalMedia object with an chlld object that looks like
a Channel but has no Channel behavior attached to it. The
event handler added to chan will never get called and you
can't attach handlers or perform any operations on
ExternalMedia.channel because it's just a plain object,
not an instance of Channel.</div>
<div><br>
</div>
<div>Realistically, it doesn't make sense to force client
library implementations to create special logic to promote
the ExternalMedia.channel object into an instance of
Channel and since External Media is a new capability
anyway, it seems that the least painful solution is to
remove the ExternalMedia object and have
channels/externalMedia return a Channel object directly,
just like channels/create and channels/originate. As I
described above, the only other attributes of
ExternalMedia were the local address and port and they're
already available in the Channel variables anyway.</div>
<div><br>
</div>
<div>I would think that this change would make things easier
for ARI developers but I wanted to make sure that you knew
about it in advance and had a chance to comment. There
will be a Gerrit review up for this change later this
morning.</div>
<div><br>
</div>
<div>Also... I mentioned the "sample speech to text
application" above. It's working and will be published
next week. </div>
<div><br>
</div>
<div>Comments? Questions?</div>
</div>
<div><br>
</div>
<div>-- <br>
<div dir="ltr" class="gmail_signature"
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<div>
<div dir="ltr">
<div dir="ltr" style="font-size:12.8px"><b
style="font-family:arial,helvetica,sans-serif;font-size:12.8px">George
Joseph</b><br>
</div>
<div dir="ltr">
<div style="font-size:12.8px"><font size="1"
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Sangoma Company | Software
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<div dir="ltr"><font size="1">direct/fax: +1 256 428
6012</font>
<div style="font-size:12.8px"><font size="1"
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