*i just want to understand as to how the request goes from the api-call to the nova-api and so on after that.* To answer "so on after that", in addition to josh answer, you can also look into http://ilearnstack.com/2013/04/26/request-flow-for-provisioning-instance-in-openstack/ .
Now to answer first part, "i just want to understand as to how the request goes from the api-call to the nova-api": You can look into *http://developer.openstack.org/api-ref.html <http://developer.openstack.org/api-ref.html>*, particularly in *http://developer.openstack.org/api-ref-compute-v2.1.html <http://developer.openstack.org/api-ref-compute-v2.1.html>* On Sat, Aug 29, 2015 at 8:39 AM, Joshua Harlow <harlo...@outlook.com> wrote: > I made the following some time ago, > > https://wiki.openstack.org/wiki/RunInstanceWorkflows > > https://wiki.openstack.org/w/images/a/a9/Curr-run-instance.png > > That may be useful for u, (it may also not be that up to date), > > Cheers, > > Josh > > Dhvanan Shah wrote: > >> Hi, >> >> I'm trying to trace a request made for an instance and looking at the >> flow in the code. >> I'm just trying to understand better how the request goes from the >> dashboard to the nova-api , to the other internal components of nova and >> to the scheduler and back with a suitable host and launching of the >> instance. >> >> i just want to understand as to how the request goes from the api-call >> to the nova-api and so on after that. >> I have understood the nova-scheduler and in that, the filter_scheduler >> receives something called request_spec that is the specifications of the >> request that is made, and I want to see where this comes from. I was not >> very successful in reverse engineering this. >> >> I could use some help as I want to implement a scheduling algorithm of >> my own but for that I need to understand how and where the requests come >> in and how the flow works. >> >> If someone could guide me as to where i can find help or point in some >> direction then it would be of great help. >> -- >> Dhvanan Shah >> >> __________________________________________________________________________ >> OpenStack Development Mailing List (not for usage questions) >> Unsubscribe: >> openstack-dev-requ...@lists.openstack.org?subject:unsubscribe >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >> > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > -- Vedsar Kushwaha SDE@Amazon Development Center Past - Indian Institute of Science
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