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<div>Can someone elaborate further on the things that Murano is intended to solve within the OpenStack ecosystem? My observation has been that Murano has changed from a Windows focused Deployment Service to a Metadata Application Catalog Workflow thing (I
fully admit this may be an invalid observation). It's unclear to me what OpenStack pain/use-cases is to be solved by "complex object composition, description of data types, contracts..." </div>
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<div>Your thoughts would be much appreciated.</div>
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<div>Thanks,</div>
<div>-Keith</div>
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<span style="font-weight:bold">From: </span>Renat Akhmerov <<a href="mailto:rakhmerov@mirantis.com">rakhmerov@mirantis.com</a>><br>
<span style="font-weight:bold">Reply-To: </span>"OpenStack Development Mailing List (not for usage questions)" <<a href="mailto:openstack-dev@lists.openstack.org">openstack-dev@lists.openstack.org</a>><br>
<span style="font-weight:bold">Date: </span>Monday, February 17, 2014 1:33 AM<br>
<span style="font-weight:bold">To: </span>"OpenStack Development Mailing List (not for usage questions)" <<a href="mailto:openstack-dev@lists.openstack.org">openstack-dev@lists.openstack.org</a>><br>
<span style="font-weight:bold">Subject: </span>Re: [openstack-dev] [Murano] Need a new DSL for Murano<br>
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<div style="margin: 0px; font-size: 13px; font-family: 'Helvetica Neue';">Clint, </div>
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<div style="margin: 0px; font-size: 13px; font-family: 'Helvetica Neue';">We're collaborating with Murano. We may need to do it in a way that others could see it though. There are several things here:</div>
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<li><font face="Helvetica Neue" size="2">Murano doesn’t really have a “workflow engine” similar to Mistral’s. People get confused with that but it’s just a legacy terminology, I think Murano folks were going to rename this component to be more precise about
it.</font></li><li><font face="Helvetica Neue" size="2">Mistral DSL doesn’t seem to be a good option for solving tasks that Murano is intended to solve. Specifically I mean things like complex object composition, description of data types, contracts and so on. Like Alex and
Stan mentioned Murano DSL tends to grow into a full programming language</font><span style="font-family: 'Helvetica Neue'; font-size: small; ">.</span></li><li><span style="font-family: 'Helvetica Neue'; font-size: small; ">Most likely Mistral will be used in Murano for implementation, at least we see where it would be valuable. But Mistral is not so matured yet, we need to keep working hard and be patient :)</span></li></ul>
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<div><span style="font-family: 'Helvetica Neue'; font-size: small; ">Anyway, we keep thinking on how to make both languages look similar or at least the possibility to use them seamlessly, if needed (call Mistral workflows from Murano DSL or vice versa).</span></div>
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<div>Renat Akhmerov</div>
<div>@ Mirantis Inc.</div>
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<div>On 16 Feb 2014, at 05:48, Clint Byrum <<a href="mailto:clint@fewbar.com">clint@fewbar.com</a>> wrote:</div>
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<blockquote type="cite">Excerpts from Alexander Tivelkov's message of 2014-02-14 18:17:10 -0800:<br>
<blockquote type="cite">Hi folks,<br>
<br>
Murano matures, and we are getting more and more feedback from our early<br>
adopters. The overall reception is very positive, but at the same time<br>
there are some complaints as well. By now the most significant complaint is<br>
is hard to write workflows for application deployment and maintenance.<br>
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Current version of workflow definition markup really have some design<br>
drawbacks which limit its potential adoption. They are caused by the fact<br>
that it was never intended for use for Application Catalog use-cases.<br>
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<br>
Just curious, is there any reason you're not collaborating on Mistral<br>
for this rather than both having a workflow engine?<br>
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</blockquote>
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