GNMI openconfig binary parsing not functioning correctly

[mattg66]

Relevant telegraf.conf

[agent]
  hostname = "telegraf-01"
  debug = true
[[inputs.gnmi]]
    addresses = ["xx:5909"]
    username = "${GNMI_USERNAME}"
    password = "${GNMI_PASSWORD}"
    ## redial in case of failures after
    redial = "10s"
    dump_responses = true

    yang_model_paths = [
        "/etc/telegraf/openconfig/release/models/",
        "/etc/telegraf/openconfig/third_party/ietf/",
    ]
    [inputs.gnmi.tags]
      device = "xx"
      serial_number = "xx"
      model_name = "DCS-7050CX3-32S"
    [[inputs.gnmi.subscription]]
        name = "state"
        origin = "openconfig"
        path = "/components/component/state"
        subscription_mode = "on_change"
    [[inputs.gnmi.subscription]]
        name = "cpu"
        origin = "openconfig"
        path = "/components/component/cpu/utilization/state"
        subscription_mode = "on_change"
    [[inputs.gnmi.subscription]]
        name = "psu"
        origin = "openconfig"
        path = "/components/component/power-supply/state"
        subscription_mode = "on_change"
    [[inputs.gnmi.subscription]]
        name = "fan"
        origin = "openconfig"
        path = "/components/component/fan/state"
        subscription_mode = "on_change"
    [[inputs.gnmi.subscription]]
        name = "ifcounters"
        origin = "openconfig"
        path = "/interfaces/interface/state/counters"
        subscription_mode = "on_change"
[[outputs.file]]
  files = ["stdout"]

[[outputs.influxdb]]
  # destination influxdb xxx
  urls = ["https://xx"]
  database = "ARISTA_SWITCHING"
  retention_policy = ""
  username = "xx"
  password = "xx"
  write_consistency = "any"
  timeout = "5s"
  ssl_ca = ""
  ssl_cert = ""
  ssl_key = ""
  insecure_skip_verify = true

Logs from Telegraf

2025-01-03T16:49:41Z D! [inputs.gnmi] Got update_1735922981156731216: {"update":{"timestamp":"1735922981156731216","update":[{"path":{"elem":[{"name":"components"},{"name":"component","key":{"name":"PowerSupply2"}},{"name":"power-supply"},{"name":"state"},{"name":"input-current"}]},"val":{"bytesVal":"Po8AAA=="}}]}}

2025-01-03T16:49:41Z D! [inputs.gnmi] Got update_1735922981156821374: {"update":{"timestamp":"1735922981156821374","update":[{"path":{"elem":[{"name":"components"},{"name":"component","key":{"name":"PowerSupply2"}},{"name":"power-supply"},{"name":"state"},{"name":"output-power"}]},"val":{"bytesVal":"QjIAAA=="}}]}}

2025-01-03T16:49:41Z D! [inputs.gnmi] Got update_1735922981483943425: {"update":{"timestamp":"1735922981483943425","update":[{"path":{"elem":[{"name":"components"},{"name":"component","key":{"name":"PowerSupply1"}},{"name":"power-supply"},{"name":"state"},{"name":"output-power"}]},"val":{"bytesVal":"QlBAAA=="}}]}}

2025-01-03T16:49:46Z D! [inputs.gnmi] Got update_1735922986368663745: {"update":{"timestamp":"1735922986368663745","update":[{"path":{"elem":[{"name":"components"},{"name":"component","key":{"name":"PowerSupply2"}},{"name":"power-supply"},{"name":"state"},{"name":"input-current"}]},"val":{"bytesVal":"Po4AAA=="}}]}}

2025-01-03T16:49:46Z D! [inputs.gnmi] Got update_1735922986368737133: {"update":{"timestamp":"1735922986368737133","update":[{"path":{"elem":[{"name":"components"},{"name":"component","key":{"name":"PowerSupply2"}},{"name":"power-supply"},{"name":"state"},{"name":"output-current"}]},"val":{"bytesVal":"QHGAAA=="}}]}}

2025-01-03T16:49:46Z D! [inputs.gnmi] Got update_1735922986368762428: {"update":{"timestamp":"1735922986368762428","update":[{"path":{"elem":[{"name":"components"},{"name":"component","key":{"name":"PowerSupply2"}},{"name":"power-supply"},{"name":"state"},{"name":"output-voltage"}]},"val":{"bytesVal":"QT/4AA=="}}]}}

2025-01-03T16:49:46Z D! [inputs.gnmi] Got update_1735922986368776845: {"update":{"timestamp":"1735922986368776845","update":[{"path":{"elem":[{"name":"components"},{"name":"component","key":{"name":"PowerSupply2"}},{"name":"power-supply"},{"name":"state"},{"name":"output-power"}]},"val":{"bytesVal":"QjUAAA=="}}]}}

2025-01-03T16:49:46Z D! [inputs.gnmi] Got update_1735922986697451141: {"update":{"timestamp":"1735922986697451141","update":[{"path":{"elem":[{"name":"components"},{"name":"component","key":{"name":"PowerSupply1"}},{"name":"power-supply"},{"name":"state"},{"name":"output-current"}]},"val":{"bytesVal":"QIkAAA=="}}]}}

2025-01-03T16:49:46Z D! [inputs.gnmi] Got update_1735922986697531925: {"update":{"timestamp":"1735922986697531925","update":[{"path":{"elem":[{"name":"components"},{"name":"component","key":{"name":"PowerSupply1"}},{"name":"power-supply"},{"name":"state"},{"name":"output-voltage"}]},"val":{"bytesVal":"QUBoAA=="}}]}}

2025-01-03T16:49:46Z D! [inputs.gnmi] Got update_1735922986697545778: {"update":{"timestamp":"1735922986697545778","update":[{"path":{"elem":[{"name":"components"},{"name":"component","key":{"name":"PowerSupply1"}},{"name":"power-supply"},{"name":"state"},{"name":"output-power"}]},"val":{"bytesVal":"Qk2AAA=="}}]}}

psu,device=xx,host=telegraf-01,model_name=DCS-7050CX3-32S,name=PowerSupply2,serial_number=xx,source=172.25.8.33 input_current=">�" 1735922981156731216

psu,device=xx,host=telegraf-01,model_name=DCS-7050CX3-32S,name=PowerSupply2,serial_number=xx,source=172.25.8.33 output_power="B2" 1735922981156821374

psu,device=xx,host=telegraf-01,model_name=DCS-7050CX3-32S,name=PowerSupply1,serial_number=xx,source=172.25.8.33 output_power="BP@" 1735922981483943425

psu,device=xx,host=telegraf-01,model_name=DCS-7050CX3-32S,name=PowerSupply2,serial_number=xx,source=172.25.8.33 input_current=">�" 1735922986368663745

psu,device=xx,host=telegraf-01,model_name=DCS-7050CX3-32S,name=PowerSupply2,serial_number=xx,source=172.25.8.33 output_current="@q�" 1735922986368737133

psu,device=xx,host=telegraf-01,model_name=DCS-7050CX3-32S,name=PowerSupply2,serial_number=xx,source=172.25.8.33 output_voltage="A?�" 1735922986368762428

psu,device=xx,host=telegraf-01,model_name=DCS-7050CX3-32S,name=PowerSupply2,serial_number=xx,source=172.25.8.33 output_power="B5" 1735922986368776845

psu,device=xx,host=telegraf-01,model_name=DCS-7050CX3-32S,name=PowerSupply1,serial_number=xx,source=172.25.8.33 output_current="@�" 1735922986697451141

psu,device=xx,host=telegraf-01,model_name=DCS-7050CX3-32S,name=PowerSupply1,serial_number=xx,source=172.25.8.33 output_voltage="A@h" 1735922986697531925

psu,device=xx,host=telegraf-01,model_name=DCS-7050CX3-32S,name=PowerSupply1,serial_number=xx,source=172.25.8.33 output_power="BM�" 1735922986697545778

System info

Telegraf 1.33.0 Docker

Docker

services:
telegraf:
image: telegraf:latest
container_name: telegraf-01
restart: unless-stopped
environment:
- GNMI_USERNAME=${GNMI_USERNAME}
- GNMI_PASSWORD=${GNMI_PASSWORD}
networks:
- monitoring
volumes:
- /root/telegraf-01-config.conf:/etc/telegraf/telegraf.conf:ro
- /root/openconfig:/etc/telegraf/openconfig:ro
- /root/arista-yang:/etc/telegraf/arista-yang:ro
networks:
monitoring:
external: true

Steps to reproduce

1. Using an Arista switch running EOS 4.31.4M, connect using GNMI to retrieve power supply state via openconfig
2. Expect telegraf to pass data as YANG models are provided
3. Telegraf exports wrongly converted data out to the database
   ...

Expected behavior

Telegraf to convert the bytesVal into human readable.

gNMI response from yangsuite is:

update { path { elem { name: "components" } elem { name: "component" key { key: "name" value: "PowerSupply1" } } elem { name: "power-supply" } elem { name: "state" } } val { json_ietf_val: "{"openconfig-platform-psu:capacity":"Q/oAAA==","openconfig-platform-psu:input-current":"PqQAAA==","openconfig-platform-psu:input-voltage":"Q22AAA==","openconfig-platform-psu:output-current":"QIrAAA==","openconfig-platform-psu:output-power":"Qk3AAA==","openconfig-platform-psu:output-voltage":"QUAwAA=="}" } } update { path { elem { name: "components" } elem { name: "component" key { key: "name" value: "PowerSupply2" } } elem { name: "power-supply" } elem { name: "state" } } val { json_ietf_val: "{"openconfig-platform-psu:capacity":"Q/oAAA==","openconfig-platform-psu:input-current":"Po0AAA==","openconfig-platform-psu:input-voltage":"Q2PAAA==","openconfig-platform-psu:output-current":"QHGAAA==","openconfig-platform-psu:output-power":"QjUAAA==","openconfig-platform-psu:output-voltage":"QUAwAA=="}" } } }

Actual behavior

It converts it to garbage

Additional info

No response