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<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">This expression does the trick:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">```<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">value_attribute: ". | value['usage'] | value.get('rgw.main', {'size':0}) | value['size']"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">```<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Thanks !<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">JF<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Rafael Weingärtner <rafaelweingartner@gmail.com>
<br>
<b>Sent:</b> jeudi, 13 octobre 2022 13:41<br>
<b>To:</b> Taltavull Jean-François <jean-francois.taltavull@elca.ch><br>
<b>Cc:</b> openstack-discuss <openstack-discuss@lists.openstack.org><br>
<b>Subject:</b> Re: [Ceilometer] Dynamic pollsters : dot in JSON keyname<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.5pt"><strong><i><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:red">EXTERNAL MESSAGE
</span></i></strong><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">- This email comes from
<strong><span style="font-family:"Arial",sans-serif">outside ELCA companies</span></strong>.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">In such cases, you need to use the "Dynamic pollsters operations" to process the sample, and retrieve the key as "rgw.main.size". By default, this value ("rgw.main.size") is interpreted as a nested dictionary.
I mean, an object with a key "rgw", and then, another one that has a key "main", where there is a dict, with a key "size".<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">To handle such cases, you would need something similar to: `value_attribute: "usage || value['rgw.main'] | value['size']"`. However, that might not address all use cases. You will also need to handle situations
when there is no key "rgw.main" in the response samples.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">On Wed, Oct 12, 2022 at 12:17 PM Taltavull Jean-François <<a href="mailto:jean-francois.taltavull@elca.ch">jean-francois.taltavull@elca.ch</a>> wrote:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Hello Rafael,<br>
<br>
To get the the size, in GB, occupied by buckets I need to manipulate a JSON key which contains a dot in its name:<br>
<br>
````<br>
- name: "radosgw.containers.objects.size"<br>
sample_type: "gauge"<br>
unit: "B"<br>
value_attribute: "rgw.main.size" <------------------------------------"rgw.main" is a JSON key, with a dot in its name, which belongs to "bucket.usage" JSON container
<br>
url_path: "<a href="http://FQDN/admin/bucket?stats=True" target="_blank">http://FQDN/admin/bucket?stats=True</a>"<br>
module: "awsauth"<br>
authentication_object: "S3Auth"<br>
authentication_parameters: my_access_key,my_secret_key,FQDN<br>
user_id_attribute: "owner"<br>
project_id_attribute: "tenant"<br>
resource_id_attribute: "id"<br>
response_entries_key: "usage"<br>
````<br>
<br>
But with this dynamic pollster definition, I get the python error "KeyError: 'rgw' ".<br>
<br>
In this case, is there a specific syntax to define "value_attribute" or am I doing something the wrong way ?<br>
<br>
<br>
Jean-Francois<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"><br clear="all">
<br>
-- <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Rafael Weingärtner<o:p></o:p></span></p>
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