[[inputs.snmp]]
  interval = "300s"
  agent_host_tag = "source"
  agents = [
{% for item in snmp_hosts %}
{% for address in query("netbox.netbox.nb_lookup", "devices", api_filter=item.nb_filter, raw_data=true)
    | selectattr("primary_ip4") | map(attribute="primary_ip4.address")
    | ipaddr("address") %}
    "{{ address }}",
{% endfor %}
{% endfor %}
  ]
  version = 3
  sec_level = "authPriv"
  auth_protocol = "SHA"
  priv_protocol = "DES"
  sec_name = "{{ password.snmp_user }}"
  auth_password = "{{ password.snmp_pass }}"
  priv_password = "{{ password.snmp_pass }}"

  fieldexclude = ["ifDescr", "ifSpecific"]

  [[inputs.snmp.field]]
    name = "hostname"
    oid = "RFC1213-MIB::sysName.0"
    is_tag = true

  # interface table
  [[inputs.snmp.table]]
    name = "iface"
    oid = "IF-MIB::ifTable"
    inherit_tags = ["hostname"]

    [[inputs.snmp.table.field]]
      oid = "IF-MIB::ifName"

    # rename counters to make prometheus happy
    [[inputs.snmp.table.field]]
      name = "in_total"
      oid = "IF-MIB::ifInOctets"

    [[inputs.snmp.table.field]]
      name = "in_err_total"
      oid = "IF-MIB::ifInErrors"

    [[inputs.snmp.table.field]]
      name = "out_total"
      oid = "IF-MIB::ifOutOctets"

    [[inputs.snmp.table.field]]
      name = "out_err_total"
      oid = "IF-MIB::ifOutErrors"

  # MAC address table per VLAN
  [[inputs.snmp.table]]
    name = "fdb"
    index_as_tag = true
    inherit_tags = ["hostname"]

    [[inputs.snmp.table.field]]
      name = "ifIndex"
      oid = "Q-BRIDGE-MIB::dot1qTpFdbPort"
      is_tag = true

    [[inputs.snmp.table.field]]
      name = "entry"
      oid = "Q-BRIDGE-MIB::dot1qTpFdbStatus"

# look up interface name from its index
# seems we need another SNMP connection for that
[[processors.snmp_lookup]]
  namepass = ["fdb", "iface"]
  agent_tag = "source"
  index_tag = "ifIndex"

  version = 3
  sec_level = "authPriv"
  auth_protocol = "SHA"
  priv_protocol = "DES"
  sec_name = "{{ password.snmp_user }}"
  auth_password = "{{ password.snmp_pass }}"
  priv_password = "{{ password.snmp_pass }}"

  [[processors.snmp_lookup.tag]]
  oid = "IF-MIB::ifName"
  name = "iface"

# split index 42.1.2.3.10.11.12 into tags "vlan" and "mac1" to "mac6"
[[processors.regex]]
  namepass = ["fdb"]

  [[processors.regex.tags]]
  key = "index"
  pattern = '^(?P<vlan>\d+)\.(?P<mac1>\d+)\.(?P<mac2>\d+)\.(?P<mac3>\d+)\.(?P<mac4>\d+)\.(?P<mac5>\d+)\.(?P<mac6>\d+)'

# combine "mac*" tags into a single tag "mac" with value 01:02:03:0a:0b:0c
[[processors.template]]
  namepass = ["fdb"]
  tagexclude = ["ifIndex", "index"]
  tag = "mac"
{% raw %}
  template = '''{{
    printf "%02x:%02x:%02x:%02x:%02x:%02x"
        (.Tag "mac1"|int) (.Tag "mac2"|int) (.Tag "mac3"|int) (.Tag "mac4"|int) (.Tag "mac5"|int) (.Tag "mac6"|int)
  }}'''
{% endraw %}