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    <p>How about if you POST to an "Updates" collection resource. That would return a 202 with a Location link to a "Installation" resource that is transient. When the installation finishes it would contain a link to the deployed "update" resource. At some point you can garbage collection the installation resources.</p> <p>So for me, intuitively you would add an update to the updates collection and if you wanted to see previously installed updates you could GET this collection. Operations that are available purely during the installation process, like pause and cancel, they can be made available as links in the "installation" resource.</p> <hr> <p>Update:</p> <p>Ok, so if the user cannot POST to /updates then another approach is to create a processing resource called "Installer".</p> <pre><code>POST /Installer 201 Created Location: /Installation/345 </code></pre> <p>The pause and cancel terms are what I would use for the rel. Nobody should give you a hard time for that. What URI you use for those rels is a bit more tricky. Cancel could definitely be done by deleting the installation resource. Maybe you could do pause by doing a PUT to <code>/installation/345/status</code>. </p> <p>To implement those additional actions will almost certainly require creating some other kind of resource/sub-resource. That's fine. In my opinion you should never hesitate to create a new resource if it is a simple solution to your problem. We only have the HTTP methods to work with so modelling complex behaviour requires us to get creative with new resources.</p>
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    1. COThanks for the fast answer Darrel ! I think i should have been clearer on the updates collection resource so i edited the question accordingly. Basically that collection resource already exists, and the user cannot not POST to it to add an update (see edit). However perhaps I could use your method (I do like the idea of having that POST return a link to a transient "installation") but by separating installed vs not installed resources: ie when installing a new "update" , post to _demo.org/newupdates_ instead.
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    2. COI like the second part of your answer aswell, having links to pause and cancel inside a transient resource fits the idea of them only existing within the confines of the "Installation" state. But basically would I not be "cheating" by considering pause as the noun "a pause" (borderline nitpicky , but might be frowned upon) ? Does this also not lead to a multiplication of sub resources that are almost nothing but boolean ?
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    3. CO@ckaos See update.
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