Support Host header in REST queries

[Cedric Brandily]

Designate uses the static api_base_uri option (service:api section) as base url when returning urls through REST.

But Designate could/should use (when api_base_uri is not configured?) Host request-header which the Internet host and port number of the resource being requested, as obtained from the original URI given by the user or referring resource:

  when Host header == $myhost:$myport, designate should return urls prefixed by http(s)://$myhost:$myport/.

Using Host request-header allows to reduce deployer work and to return urls with the correct domain when Designate is reachable from multiple hosts/ports.

[Thierry Carrez (ttx)]

Opinion is a "closed" status and my understanding is that this is not finished (hence the milestone targeting ?)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/199744
Committed: https://git.openstack.org/cgit/openstack/designate/commit/?id=1e266b1634dd54e26703c8660ce3461e91fc081b
Submitter: Jenkins
Branch: master

commit 1e266b1634dd54e26703c8660ce3461e91fc081b
Author: mimi8890 <email address hidden>
Date: Thu Jul 23 16:42:02 2015 +0000

    Add support for Host header in REST queries

    Can use host request headers if enable_host_header is set to true
    in config file. If host header is not specified or host header is
    turned off, it will use the default api_base_uri.

    Also added unit tests.

    Change-Id: Ia353c116485f3e7112bcfde11457cdf7fe006422
    Closes-bug: 1446387

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/kilo
Review: https://review.openstack.org/237054

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/237054
Committed: https://git.openstack.org/cgit/openstack/designate/commit/?id=bf47fe05f1962632c087edaeeb92664e8146c328
Submitter: Jenkins
Branch: stable/kilo

commit bf47fe05f1962632c087edaeeb92664e8146c328
Author: mimi8890 <email address hidden>
Date: Thu Jul 23 16:42:02 2015 +0000

    Add support for Host header in REST queries

    Can use host request headers if enable_host_header is set to true
    in config file. If host header is not specified or host header is
    turned off, it will use the default api_base_uri.

    Also added unit tests.

    Change-Id: Ia353c116485f3e7112bcfde11457cdf7fe006422
    Closes-bug: 1446387