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<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Problem description:<o:p></o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Monty Taylor added split-logger functionality in patch[1]. <o:p>
</o:p></p>
<p class="MsoNormal">This functionality splits logs in four different logs:<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l2 level1 lfo1"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>keystoneauth.session.request<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l2 level1 lfo1"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>keystoneauth.session.response<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l2 level1 lfo1"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>keystoneauth.session.body<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l2 level1 lfo1"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>keystoneauth.session.request-id<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Working on enabling this split_logger functionality for cinder to its internal clients interaction (like glanceclient, keystoneclient, novaclient).
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Steps followed to enable this functionality:<o:p></o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">1. Register the configuration option 'split_loggers' in keystoneauth [2].<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">2. After registering 'split_loggers' option in keystoneauth for cinder to novaclient interaction, need to set value of 'split_loggers=True/False' under [nova] section of cinder.conf, so that this 'split_loggers' value will get loaded from
[nova] section at the time of loading session [3].<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">So trying same approach for cinder to glanceclient interaction, but there is one difference:
<o:p></o:p></p>
<p class="MsoNormal"> glanceclient uses 'load_from_options' method [4] while loading session<o:p></o:p></p>
<p class="MsoNormal"> And novaclient is using 'load_session_from_conf_options' method[3] from keystoneauth.
<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><b>Impact:<o:p></o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For this need to register the session conf options from keystoneauth under [glance] section which earlier was under [default] section.<o:p></o:p></p>
<p class="MsoNormal">Please refer changes made for this[5].<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Pros of using this approach:<o:p></o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>As we are setting conf option in keystoneauth it will directly load value of ‘split_loggers’ from conf file.
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in;text-indent:.25in">So no need to pass explicitly ‘split_loggers’ value at the time of loading keystoneauth session.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Cons of using this approch:<o:p></o:p></b></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo3"><![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Need to register session conf options under [glance] section instead of [default].<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Need opinion on this as it is changing the group from [default] to [glance] for session conf options.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">[1]: <a href="https://review.openstack.org/#/c/505764/">https://review.openstack.org/#/c/505764/</a><o:p></o:p></p>
<p class="MsoNormal">[2]: <a href="http://paste.openstack.org/show/721071/">http://paste.openstack.org/show/721071/</a><o:p></o:p></p>
<p class="MsoNormal">[3]: <a href="https://github.com/openstack/cinder/blob/master/cinder/compute/nova.py#L112">
https://github.com/openstack/cinder/blob/master/cinder/compute/nova.py#L112</a><o:p></o:p></p>
<p class="MsoNormal">[4]: <a href="https://github.com/openstack/cinder/blob/master/cinder/image/glance.py#L104">
https://github.com/openstack/cinder/blob/master/cinder/image/glance.py#L104</a><o:p></o:p></p>
<p class="MsoNormal">[5]: <a href="http://paste.openstack.org/show/721095/">http://paste.openstack.org/show/721095/</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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