Broken metrics -> cannot fetch TP-Link router metrics

[Majroch]

Hi, I wanted to try this project out. I have 2 routers from tp-link in my home.

I created docker-compose file, like:

---
version: "3"
services:
  tplink_exporter:
    restart: unless-stopped
    build:
      context: ./
      dockerfile: Dockerfile
    ports:
     - "9300:9300"
    volumes:
     - "./known_macs:/etc/known_macs"
    user: '1000:1000'

When building this container, with command:

$ docker compose build --no-cache

I got:

 => [internal] load .dockerignore                                                                                                                                                     0.0s
 => => transferring context: 2B                                                                                                                                                       0.0s
 => [internal] load build definition from Dockerfile                                                                                                                                  0.0s
 => => transferring dockerfile: 545B                                                                                                                                                  0.0s
 => [internal] load metadata for docker.io/library/golang:alpine                                                                                                                      0.0s
 => [builder 1/5] FROM docker.io/library/golang:alpine                                                                                                                                0.0s
 => [internal] load build context                                                                                                                                                     0.0s
 => => transferring context: 6.34kB                                                                                                                                                   0.0s
 => CACHED [builder 2/5] WORKDIR /go/src/github.com/maesoser/tplink_exporter                                                                                                          0.0s
 => [builder 3/5] COPY . .                                                                                                                                                            0.1s
 => ERROR [builder 4/5] RUN adduser -D tplink && go mod tidy                                                                                                                          1.8s
------                                                                                                                                                                                     
 > [builder 4/5] RUN adduser -D tplink && go mod tidy:                                                                                                                                     
#0 0.987 go: finding module for package github.com/prometheus/client_golang/prometheus/promhttp                                                                                            
#0 0.987 go: finding module for package github.com/maesoser/tplink_exporter/tplink                                                                                                         
#0 0.987 go: finding module for package github.com/maesoser/tplink_exporter/macdb                                                                                                          
#0 0.987 go: finding module for package github.com/prometheus/client_golang/prometheus                                                                                                     
#0 1.619 go: downloading github.com/prometheus/client_golang v1.15.1
#0 1.655 go: downloading github.com/maesoser/tplink_exporter v0.0.0-20220702113403-9a98236f2f3d
#0 1.764 go: found github.com/maesoser/tplink_exporter/macdb in github.com/maesoser/tplink_exporter v0.0.0-20220702113403-9a98236f2f3d
#0 1.764 go: found github.com/maesoser/tplink_exporter/tplink in github.com/maesoser/tplink_exporter v0.0.0-20220702113403-9a98236f2f3d
#0 1.764 go: found github.com/prometheus/client_golang/prometheus in github.com/prometheus/client_golang v1.15.1
#0 1.764 go: found github.com/prometheus/client_golang/prometheus/promhttp in github.com/prometheus/client_golang v1.15.1
#0 1.764 go: main imports
#0 1.764        github.com/maesoser/tplink_exporter/macdb: github.com/maesoser/[email protected]: parsing go.mod:
#0 1.764        module declares its path as: main
#0 1.764                but was required as: github.com/maesoser/tplink_exporter
------
WARN[0000] buildx: git was not found in the system. Current commit information was not captured by the build 
failed to solve: process "/bin/sh -c adduser -D tplink && go mod tidy" did not complete successfully: exit code: 1

I've found a solution for this, over at this stackoverflow thread, and fixed it with simple one line in go.mod file:

replace github.com/maesoser/tplink_exporter => ./

After that, image was builded successfully. But when i want to try getting those metrics, like:

$ curl 172.20.0.2:9300/metrics 2>/dev/null

I get some basic metrics, without tplink_* or anything which would allow me to get router statistics.

cURL output:

# HELP go_gc_duration_seconds A summary of the pause duration of garbage collection cycles.
# TYPE go_gc_duration_seconds summary
go_gc_duration_seconds{quantile="0"} 5.4965e-05
go_gc_duration_seconds{quantile="0.25"} 6.0972e-05
go_gc_duration_seconds{quantile="0.5"} 6.5232e-05
go_gc_duration_seconds{quantile="0.75"} 7.0261e-05
go_gc_duration_seconds{quantile="1"} 7.9619e-05
go_gc_duration_seconds_sum 0.000331049
go_gc_duration_seconds_count 5
# HELP go_goroutines Number of goroutines that currently exist.
# TYPE go_goroutines gauge
go_goroutines 6
# HELP go_info Information about the Go environment.
# TYPE go_info gauge
go_info{version="go1.20.4"} 1
# HELP go_memstats_alloc_bytes Number of bytes allocated and still in use.
# TYPE go_memstats_alloc_bytes gauge
go_memstats_alloc_bytes 2.659376e+06
# HELP go_memstats_alloc_bytes_total Total number of bytes allocated, even if freed.
# TYPE go_memstats_alloc_bytes_total counter
go_memstats_alloc_bytes_total 6.5326e+06
# HELP go_memstats_buck_hash_sys_bytes Number of bytes used by the profiling bucket hash table.
# TYPE go_memstats_buck_hash_sys_bytes gauge
go_memstats_buck_hash_sys_bytes 4205
# HELP go_memstats_frees_total Total number of frees.
# TYPE go_memstats_frees_total counter
go_memstats_frees_total 55938
# HELP go_memstats_gc_sys_bytes Number of bytes used for garbage collection system metadata.
# TYPE go_memstats_gc_sys_bytes gauge
go_memstats_gc_sys_bytes 7.68268e+06
# HELP go_memstats_heap_alloc_bytes Number of heap bytes allocated and still in use.
# TYPE go_memstats_heap_alloc_bytes gauge
go_memstats_heap_alloc_bytes 2.659376e+06
# HELP go_memstats_heap_idle_bytes Number of heap bytes waiting to be used.
# TYPE go_memstats_heap_idle_bytes gauge
go_memstats_heap_idle_bytes 3.6864e+06
# HELP go_memstats_heap_inuse_bytes Number of heap bytes that are in use.
# TYPE go_memstats_heap_inuse_bytes gauge
go_memstats_heap_inuse_bytes 4.112384e+06
# HELP go_memstats_heap_objects Number of allocated objects.
# TYPE go_memstats_heap_objects gauge
go_memstats_heap_objects 27888
# HELP go_memstats_heap_released_bytes Number of heap bytes released to OS.
# TYPE go_memstats_heap_released_bytes gauge
go_memstats_heap_released_bytes 3.448832e+06
# HELP go_memstats_heap_sys_bytes Number of heap bytes obtained from system.
# TYPE go_memstats_heap_sys_bytes gauge
go_memstats_heap_sys_bytes 7.798784e+06
# HELP go_memstats_last_gc_time_seconds Number of seconds since 1970 of last garbage collection.
# TYPE go_memstats_last_gc_time_seconds gauge
go_memstats_last_gc_time_seconds 1.683131348111072e+09
# HELP go_memstats_lookups_total Total number of pointer lookups.
# TYPE go_memstats_lookups_total counter
go_memstats_lookups_total 0
# HELP go_memstats_mallocs_total Total number of mallocs.
# TYPE go_memstats_mallocs_total counter
go_memstats_mallocs_total 83826
# HELP go_memstats_mcache_inuse_bytes Number of bytes in use by mcache structures.
# TYPE go_memstats_mcache_inuse_bytes gauge
go_memstats_mcache_inuse_bytes 14400
# HELP go_memstats_mcache_sys_bytes Number of bytes used for mcache structures obtained from system.
# TYPE go_memstats_mcache_sys_bytes gauge
go_memstats_mcache_sys_bytes 15600
# HELP go_memstats_mspan_inuse_bytes Number of bytes in use by mspan structures.
# TYPE go_memstats_mspan_inuse_bytes gauge
go_memstats_mspan_inuse_bytes 131840
# HELP go_memstats_mspan_sys_bytes Number of bytes used for mspan structures obtained from system.
# TYPE go_memstats_mspan_sys_bytes gauge
go_memstats_mspan_sys_bytes 146880
# HELP go_memstats_next_gc_bytes Number of heap bytes when next garbage collection will take place.
# TYPE go_memstats_next_gc_bytes gauge
go_memstats_next_gc_bytes 5.557136e+06
# HELP go_memstats_other_sys_bytes Number of bytes used for other system allocations.
# TYPE go_memstats_other_sys_bytes gauge
go_memstats_other_sys_bytes 1.848955e+06
# HELP go_memstats_stack_inuse_bytes Number of bytes in use by the stack allocator.
# TYPE go_memstats_stack_inuse_bytes gauge
go_memstats_stack_inuse_bytes 589824
# HELP go_memstats_stack_sys_bytes Number of bytes obtained from system for stack allocator.
# TYPE go_memstats_stack_sys_bytes gauge
go_memstats_stack_sys_bytes 589824
# HELP go_memstats_sys_bytes Number of bytes obtained from system.
# TYPE go_memstats_sys_bytes gauge
go_memstats_sys_bytes 1.8086928e+07
# HELP go_threads Number of OS threads created.
# TYPE go_threads gauge
go_threads 9
# HELP process_cpu_seconds_total Total user and system CPU time spent in seconds.
# TYPE process_cpu_seconds_total counter
process_cpu_seconds_total 0.11
# HELP process_max_fds Maximum number of open file descriptors.
# TYPE process_max_fds gauge
process_max_fds 1.048576e+06
# HELP process_open_fds Number of open file descriptors.
# TYPE process_open_fds gauge
process_open_fds 10
# HELP process_resident_memory_bytes Resident memory size in bytes.
# TYPE process_resident_memory_bytes gauge
process_resident_memory_bytes 1.4422016e+07
# HELP process_start_time_seconds Start time of the process since unix epoch in seconds.
# TYPE process_start_time_seconds gauge
process_start_time_seconds 1.68313096412e+09
# HELP process_virtual_memory_bytes Virtual memory size in bytes.
# TYPE process_virtual_memory_bytes gauge
process_virtual_memory_bytes 7.37251328e+08
# HELP process_virtual_memory_max_bytes Maximum amount of virtual memory available in bytes.
# TYPE process_virtual_memory_max_bytes gauge
process_virtual_memory_max_bytes 1.8446744073709552e+19
# HELP promhttp_metric_handler_requests_in_flight Current number of scrapes being served.
# TYPE promhttp_metric_handler_requests_in_flight gauge
promhttp_metric_handler_requests_in_flight 1
# HELP promhttp_metric_handler_requests_total Total number of scrapes by HTTP status code.
# TYPE promhttp_metric_handler_requests_total counter
promhttp_metric_handler_requests_total{code="200"} 2
promhttp_metric_handler_requests_total{code="500"} 0
promhttp_metric_handler_requests_total{code="503"} 0

Tried setting my .env file, like:

TPLINK_ROUTER_ADDR=XXX.XXX.XXX.XXX
TPLINK_ROUTER_PASSWD=hackme

But still no luck.