feat:export complex nested values as a metric

[richardtief]

There are metric keys at the vrops API that return complex data types. In most cases, they contain valuable information that only makes sense when mapped to several dedicated metrics.

Here is an attempt to implement it as generic as possible. If there is a known key with a complex data structure for a collector, then this case must be implemented specifically. Several keys per collector are possible.

Internal vm names are mapped to the name.

Input:

{"rules": [{"class': 'com.integrien.alive.common.affinity.VMStorageAntiAffinityRule', 'name': 'nsxt-controller-anti-affinity', 'type': 'SDRS_VM_ANTI_AFFINITY', 'virtualMachines': ['vm-46814', 'vm-46812', 'vm-46813'], 'valid': True}]}

Output:

vrops_storagepod_config_sdrsconfig_vmstorageantiaffinityrules{
      datacenter="datacenter-1",
      rule_name="nsxt-controller-anti-affinity",
      rule_type="SDRS_VM_ANTI_AFFINITY",
      rules="1/1",
      storagepod="SDRS_MGMT_DDDD",
      valid="true",
      vcenter="vcenter-dddd",
      virtualmachines="['nsx-ctl-1-dddd', 'nsx-ctl-3-dddd', 'nsx-ctl-2-dddd']"
      } 1.0

[viennaa]

Finally some real code review again, I like it!

Added some refinements and would like to avoid the use of the internal data structure of GaugeMetricFamily.

[viennaa]

Cool, let's go!

Testing for this is still on the old branch, that's why it is failing.

[kevin-fischer]

+1

[kevin-fischer]

Great job on this!
TY for your work, @richardtief and @viennaa.