resolve nested index and enrich the metrics from another module/mib

[tigerz931]

Hi, I'm looking for a way to perform a resolve of index of specific MIB from another MIB.
pretty sure I'm missing something basics here and would appreciate your help

the example here is aristaQueueMIB has nested index of ifIndex.
here's generator.yml configuration:

  arista_sw:
    walk:
      - 1.3.6.1.4.1.30065.3.6   # aristaQueueMIB new walk for this example

MIBs loaded successfully
example metric once polling the arista switch with arista_sw module:

aristaEgressQueuePkts{aristaEgressIfIndex="33",aristaEgressPacketType="0",aristaEgressQueueIndex="0"} 2914
aristaEgressQueuePkts{aristaEgressIfIndex="33",aristaEgressPacketType="0",aristaEgressQueueIndex="1"} 7.243897114474e+12
aristaEgressQueuePkts{aristaEgressIfIndex="33",aristaEgressPacketType="0",aristaEgressQueueIndex="2"} 0
aristaEgressQueuePkts{aristaEgressIfIndex="33",aristaEgressPacketType="0",aristaEgressQueueIndex="3"} 0
aristaEgressQueuePkts{aristaEgressIfIndex="33",aristaEgressPacketType="0",aristaEgressQueueIndex="4"} 1.21428322508e+11
aristaEgressQueuePkts{aristaEgressIfIndex="33",aristaEgressPacketType="0",aristaEgressQueueIndex="5"} 0
aristaEgressQueuePkts{aristaEgressIfIndex="33",aristaEgressPacketType="0",aristaEgressQueueIndex="6"} 1.33255203e+08
aristaEgressQueuePkts{aristaEgressIfIndex="33",aristaEgressPacketType="0",aristaEgressQueueIndex="7"} 0
aristaEgressQueuePkts{aristaEgressIfIndex="33",aristaEgressPacketType="0",aristaEgressQueueIndex="8"} 384644
aristaEgressQueuePkts{aristaEgressIfIndex="34",aristaEgressPacketType="0",aristaEgressQueueIndex="0"} 10963
aristaEgressQueuePkts{aristaEgressIfIndex="34",aristaEgressPacketType="0",aristaEgressQueueIndex="1"} 6.860550655369e+12
aristaEgressQueuePkts{aristaEgressIfIndex="34",aristaEgressPacketType="0",aristaEgressQueueIndex="2"} 0
aristaEgressQueuePkts{aristaEgressIfIndex="34",aristaEgressPacketType="0",aristaEgressQueueIndex="3"} 0
aristaEgressQueuePkts{aristaEgressIfIndex="34",aristaEgressPacketType="0",aristaEgressQueueIndex="4"} 2.05923579e+08
aristaEgressQueuePkts{aristaEgressIfIndex="34",aristaEgressPacketType="0",aristaEgressQueueIndex="5"} 0
aristaEgressQueuePkts{aristaEgressIfIndex="34",aristaEgressPacketType="0",aristaEgressQueueIndex="6"} 2.46362671e+08
aristaEgressQueuePkts{aristaEgressIfIndex="34",aristaEgressPacketType="0",aristaEgressQueueIndex="7"} 0
aristaEgressQueuePkts{aristaEgressIfIndex="34",aristaEgressPacketType="0",aristaEgressQueueIndex="8"} 384644

the aristaEgressIfIndex value represented by the well known if_mib module, here's output:

ifAdminStatus{ifAlias="to_net1",ifDescr="Ethernet33",ifIndex="33",ifName="Ethernet33"} 1
ifAdminStatus{ifAlias="to_net2",ifDescr="Ethernet34",ifIndex="34",ifName="Ethernet34"} 1

what i'm looking for is to resolve the ifAlias into the entire aristaQueueMIB metrics to loo like this as an truncated example:

aristaEgressQueuePkts{aristaEgressIfIndex="Ethernet33",aristaEgressPacketType="0",aristaEgressQueueIndex="0"} 2914
aristaEgressQueuePkts{aristaEgressIfIndex="Ethernet34",aristaEgressPacketType="0",aristaEgressQueueIndex="0"} 10963

or further more to enrich more labels to metrics with ifAlias:

aristaEgressQueuePkts{aristaEgressIfIndex="Ethernet33",ifAlias="to_net1",aristaEgressPacketType="0",aristaEgressQueueIndex="0"} 2914
aristaEgressQueuePkts{aristaEgressIfIndex="Ethernet34",ifAlias="to_net2",aristaEgressPacketType="0",aristaEgressQueueIndex="0"} 10963

i looked at the generator file format for ideas, but without of success.
tried few conventions and kinds of this generator config:

  arista_sw:
    walk:
      - 1.3.6.1.4.1.30065.3.6   # aristaQueueMIB

    lookups:
      - source_indexes: [ifIndex, aristaEgressIfIndex]
        lookup: ifAlias

thank you

[tigerz931]

managed to solve this.

generator.yml config example gives the desired output with additional enrichment labels

  arista_sw:
    walk:
#      - 1.3.6.1.4.1.30065.3.1.1 # aristaSwFwdIp
      - 1.3.6.1.4.1.30065.3.6   # aristaQueueMIB
    lookups:
      - source_indexes: [aristaEgressIfIndex]  # From aristaQueueMIB
        lookup: ifAlias                        # Map `ifAlias` from IF-MIB
      - source_indexes: [aristaEgressIfIndex]
        lookup: ifName                         # Map `ifName` from IF-MIB

truncated output example: