OpenStack Heat flow of stack-create action from heatclient to heat-api to heat-engine

OpenStack How to heat-api validates token against keystone
http://fosshelp.blogspot.com/2014/07/openstack-how-to-heat-api-validates.html

OpenStack HeatCLI and heatclient flow of stack-create action
http://fosshelp.blogspot.com/2014/07/openstack-cli-and-heatclient-flow-of.html

OpenStack heat-api flow of stack-create action
http://fosshelp.blogspot.com/2014/07/openstack-heat-api-flow-of-stack-create.html

OpenStack heat-engine flow of stack-create action
http://fosshelp.blogspot.com/2014/07/openstack-heat-engine-flow-of-stack.html