feat: add main entry point with CLI flags and HTTP server
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
parent
af71e7d729
commit
1a13f19b1f
5 changed files with 216 additions and 4 deletions
1
.gitignore
vendored
1
.gitignore
vendored
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@ -1 +1,2 @@
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/.apikey
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/pve-exporter
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12
Makefile
Normal file
12
Makefile
Normal file
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@ -0,0 +1,12 @@
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.PHONY: build test clean
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BINARY := pve-exporter
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build:
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CGO_ENABLED=0 go build -o $(BINARY) .
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test:
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go test -v ./...
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clean:
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rm -f $(BINARY)
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24
go.mod
24
go.mod
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@ -2,17 +2,35 @@ module github.com/dsgeis/pve-exporter
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go 1.25.7
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require github.com/prometheus/client_golang v1.23.2
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require (
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github.com/alecthomas/kingpin/v2 v2.4.0
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github.com/prometheus/client_golang v1.23.2
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github.com/prometheus/common v0.67.5
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github.com/prometheus/exporter-toolkit v0.15.1
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)
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require (
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github.com/alecthomas/units v0.0.0-20240927000941-0f3dac36c52b // indirect
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github.com/beorn7/perks v1.0.1 // indirect
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github.com/cespare/xxhash/v2 v2.3.0 // indirect
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github.com/kr/text v0.2.0 // indirect
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github.com/coreos/go-systemd/v22 v22.6.0 // indirect
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github.com/golang-jwt/jwt/v5 v5.3.0 // indirect
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github.com/google/uuid v1.6.0 // indirect
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github.com/jpillora/backoff v1.0.0 // indirect
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github.com/mdlayher/socket v0.4.1 // indirect
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github.com/mdlayher/vsock v1.2.1 // indirect
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github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
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github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
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github.com/prometheus/client_model v0.6.2 // indirect
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github.com/prometheus/common v0.67.5 // indirect
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github.com/prometheus/procfs v0.16.1 // indirect
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github.com/xhit/go-str2duration/v2 v2.1.0 // indirect
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go.yaml.in/yaml/v2 v2.4.3 // indirect
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golang.org/x/crypto v0.46.0 // indirect
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golang.org/x/net v0.48.0 // indirect
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golang.org/x/oauth2 v0.34.0 // indirect
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golang.org/x/sync v0.19.0 // indirect
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golang.org/x/sys v0.39.0 // indirect
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golang.org/x/text v0.32.0 // indirect
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golang.org/x/time v0.14.0 // indirect
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google.golang.org/protobuf v1.36.11 // indirect
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)
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49
go.sum
49
go.sum
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@ -1,18 +1,40 @@
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github.com/alecthomas/kingpin/v2 v2.4.0 h1:f48lwail6p8zpO1bC4TxtqACaGqHYA22qkHjHpqDjYY=
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github.com/alecthomas/kingpin/v2 v2.4.0/go.mod h1:0gyi0zQnjuFk8xrkNKamJoyUo382HRL7ATRpFZCw6tE=
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github.com/alecthomas/units v0.0.0-20240927000941-0f3dac36c52b h1:mimo19zliBX/vSQ6PWWSL9lK8qwHozUj03+zLoEB8O0=
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github.com/alecthomas/units v0.0.0-20240927000941-0f3dac36c52b/go.mod h1:fvzegU4vN3H1qMT+8wDmzjAcDONcgo2/SZ/TyfdUOFs=
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github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
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github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
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github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
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github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
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github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
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github.com/coreos/go-systemd/v22 v22.6.0 h1:aGVa/v8B7hpb0TKl0MWoAavPDmHvobFe5R5zn0bCJWo=
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github.com/coreos/go-systemd/v22 v22.6.0/go.mod h1:iG+pp635Fo7ZmV/j14KUcmEyWF+0X7Lua8rrTWzYgWU=
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/golang-jwt/jwt/v5 v5.3.0 h1:pv4AsKCKKZuqlgs5sUmn4x8UlGa0kEVt/puTpKx9vvo=
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github.com/golang-jwt/jwt/v5 v5.3.0/go.mod h1:fxCRLWMO43lRc8nhHWY6LGqRcf+1gQWArsqaEUEa5bE=
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github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
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github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
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github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
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github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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github.com/jpillora/backoff v1.0.0 h1:uvFg412JmmHBHw7iwprIxkPMI+sGQ4kzOWsMeHnm2EA=
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github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
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github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
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github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
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github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
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github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
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github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
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github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
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github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
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github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
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github.com/mdlayher/socket v0.4.1 h1:eM9y2/jlbs1M615oshPQOHZzj6R6wMT7bX5NPiQvn2U=
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github.com/mdlayher/socket v0.4.1/go.mod h1:cAqeGjoufqdxWkD7DkpyS+wcefOtmu5OQ8KuoJGIReA=
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github.com/mdlayher/vsock v1.2.1 h1:pC1mTJTvjo1r9n9fbm7S1j04rCgCzhCOS5DY0zqHlnQ=
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github.com/mdlayher/vsock v1.2.1/go.mod h1:NRfCibel++DgeMD8z/hP+PPTjlNJsdPOmxcnENvE+SE=
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github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
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github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
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github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f h1:KUppIJq7/+SVif2QVs3tOP0zanoHgBEVAwHxUSIzRqU=
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github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
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github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/prometheus/client_golang v1.23.2 h1:Je96obch5RDVy3FDMndoUsjAhG5Edi49h0RJWRi/o0o=
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@ -21,22 +43,47 @@ github.com/prometheus/client_model v0.6.2 h1:oBsgwpGs7iVziMvrGhE53c/GrLUsZdHnqNw
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github.com/prometheus/client_model v0.6.2/go.mod h1:y3m2F6Gdpfy6Ut/GBsUqTWZqCUvMVzSfMLjcu6wAwpE=
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github.com/prometheus/common v0.67.5 h1:pIgK94WWlQt1WLwAC5j2ynLaBRDiinoAb86HZHTUGI4=
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github.com/prometheus/common v0.67.5/go.mod h1:SjE/0MzDEEAyrdr5Gqc6G+sXI67maCxzaT3A2+HqjUw=
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github.com/prometheus/exporter-toolkit v0.15.1 h1:XrGGr/qWl8Gd+pqJqTkNLww9eG8vR/CoRk0FubOKfLE=
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github.com/prometheus/exporter-toolkit v0.15.1/go.mod h1:P/NR9qFRGbCFgpklyhix9F6v6fFr/VQB/CVsrMDGKo4=
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github.com/prometheus/procfs v0.16.1 h1:hZ15bTNuirocR6u0JZ6BAHHmwS1p8B4P6MRqxtzMyRg=
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github.com/prometheus/procfs v0.16.1/go.mod h1:teAbpZRB1iIAJYREa1LsoWUXykVXA1KlTmWl8x/U+Is=
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github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
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github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
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github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
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github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
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github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
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github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
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github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
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github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
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github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
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github.com/xhit/go-str2duration/v2 v2.1.0 h1:lxklc02Drh6ynqX+DdPyp5pCKLUQpRT8bp8Ydu2Bstc=
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github.com/xhit/go-str2duration/v2 v2.1.0/go.mod h1:ohY8p+0f07DiV6Em5LKB0s2YpLtXVyJfNt1+BlmyAsU=
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go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
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go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
|
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go.yaml.in/yaml/v2 v2.4.3 h1:6gvOSjQoTB3vt1l+CU+tSyi/HOjfOjRLJ4YwYZGwRO0=
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go.yaml.in/yaml/v2 v2.4.3/go.mod h1:zSxWcmIDjOzPXpjlTTbAsKokqkDNAVtZO0WOMiT90s8=
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golang.org/x/crypto v0.46.0 h1:cKRW/pmt1pKAfetfu+RCEvjvZkA9RimPbh7bhFjGVBU=
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golang.org/x/crypto v0.46.0/go.mod h1:Evb/oLKmMraqjZ2iQTwDwvCtJkczlDuTmdJXoZVzqU0=
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golang.org/x/net v0.48.0 h1:zyQRTTrjc33Lhh0fBgT/H3oZq9WuvRR5gPC70xpDiQU=
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golang.org/x/net v0.48.0/go.mod h1:+ndRgGjkh8FGtu1w1FGbEC31if4VrNVMuKTgcAAnQRY=
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golang.org/x/oauth2 v0.34.0 h1:hqK/t4AKgbqWkdkcAeI8XLmbK+4m4G5YeQRrmiotGlw=
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golang.org/x/oauth2 v0.34.0/go.mod h1:lzm5WQJQwKZ3nwavOZ3IS5Aulzxi68dUSgRHujetwEA=
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golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
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golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
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golang.org/x/sys v0.39.0 h1:CvCKL8MeisomCi6qNZ+wbb0DN9E5AATixKsvNtMoMFk=
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golang.org/x/sys v0.39.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
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golang.org/x/text v0.32.0 h1:ZD01bjUt1FQ9WJ0ClOL5vxgxOI/sVCNgX1YtKwcY0mU=
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golang.org/x/text v0.32.0/go.mod h1:o/rUWzghvpD5TXrTIBuJU77MTaN0ljMWE47kxGJQ7jY=
|
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golang.org/x/time v0.14.0 h1:MRx4UaLrDotUKUdCIqzPC48t1Y9hANFKIRpNx+Te8PI=
|
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golang.org/x/time v0.14.0/go.mod h1:eL/Oa2bBBK0TkX57Fyni+NgnyQQN4LitPmob2Hjnqw4=
|
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google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
|
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google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
|
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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||||
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
|
||||
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
|
||||
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
|
||||
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
|
||||
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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134
main.go
Normal file
134
main.go
Normal file
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@ -0,0 +1,134 @@
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package main
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import (
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"fmt"
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"log/slog"
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"net/http"
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"os"
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"strings"
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"github.com/alecthomas/kingpin/v2"
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"github.com/prometheus/client_golang/prometheus"
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versioncollector "github.com/prometheus/client_golang/prometheus/collectors/version"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"github.com/prometheus/common/promslog"
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promslogflag "github.com/prometheus/common/promslog/flag"
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||||
"github.com/prometheus/exporter-toolkit/web"
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||||
"github.com/prometheus/exporter-toolkit/web/kingpinflag"
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||||
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"github.com/dsgeis/pve-exporter/collector"
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)
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func main() {
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||||
var (
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pveHosts = kingpin.Flag(
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"pve.host",
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"PVE host base URL (e.g. https://pve1:8006). May be repeated for failover.",
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||||
).Required().Strings()
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pveAPIToken = kingpin.Flag(
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"pve.api-token",
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"PVE API token (USER@REALM!TOKENID=SECRET).",
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||||
).String()
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pveTokenFile = kingpin.Flag(
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"pve.token-file",
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||||
"Path to file containing the PVE API token.",
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||||
).String()
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||||
pveTLSInsecure = kingpin.Flag(
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"pve.tls-insecure",
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||||
"Disable TLS certificate verification for PVE API.",
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).Default("false").Bool()
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pveMaxConcurrent = kingpin.Flag(
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||||
"pve.max-concurrent",
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||||
"Maximum number of concurrent API requests to PVE.",
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).Default("5").Int()
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metricsPath = kingpin.Flag(
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"web.telemetry-path",
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||||
"Path under which to expose metrics.",
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||||
).Default("/metrics").String()
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toolkitFlags = kingpinflag.AddFlags(kingpin.CommandLine, ":9221")
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||||
)
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||||
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||||
promslogConfig := &promslog.Config{}
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||||
promslogflag.AddFlags(kingpin.CommandLine, promslogConfig)
|
||||
kingpin.HelpFlag.Short('h')
|
||||
kingpin.Parse()
|
||||
logger := promslog.New(promslogConfig)
|
||||
|
||||
token, err := resolveToken(*pveAPIToken, *pveTokenFile)
|
||||
if err != nil {
|
||||
logger.Error("failed to resolve API token", "err", err)
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
client := collector.NewClient(*pveHosts, token, *pveTLSInsecure, *pveMaxConcurrent)
|
||||
pveCollector := collector.NewPVECollector(client, logger)
|
||||
|
||||
registry := prometheus.NewRegistry()
|
||||
registry.MustRegister(versioncollector.NewCollector("pve_exporter"))
|
||||
registry.MustRegister(pveCollector)
|
||||
|
||||
http.Handle(*metricsPath, promhttp.HandlerFor(
|
||||
registry,
|
||||
promhttp.HandlerOpts{
|
||||
ErrorLog: slog.NewLogLogger(logger.Handler(), slog.LevelError),
|
||||
ErrorHandling: promhttp.ContinueOnError,
|
||||
MaxRequestsInFlight: 5,
|
||||
},
|
||||
))
|
||||
|
||||
if *metricsPath != "/" {
|
||||
landingConfig := web.LandingConfig{
|
||||
Name: "PVE Exporter",
|
||||
Description: "Prometheus Exporter for Proxmox VE",
|
||||
Links: []web.LandingLinks{
|
||||
{
|
||||
Address: *metricsPath,
|
||||
Text: "Metrics",
|
||||
},
|
||||
},
|
||||
}
|
||||
landingPage, err := web.NewLandingPage(landingConfig)
|
||||
if err != nil {
|
||||
logger.Error("failed to create landing page", "err", err)
|
||||
os.Exit(1)
|
||||
}
|
||||
http.Handle("/", landingPage)
|
||||
}
|
||||
|
||||
server := &http.Server{}
|
||||
if err := web.ListenAndServe(server, toolkitFlags, logger); err != nil {
|
||||
logger.Error("HTTP server error", "err", err)
|
||||
os.Exit(1)
|
||||
}
|
||||
}
|
||||
|
||||
// resolveToken determines the API token from flags or environment.
|
||||
// Exactly one of apiToken or tokenFile may be set; if neither is set,
|
||||
// the PVE_API_TOKEN environment variable is used as a fallback.
|
||||
func resolveToken(apiToken, tokenFile string) (string, error) {
|
||||
if apiToken != "" && tokenFile != "" {
|
||||
return "", fmt.Errorf("--pve.api-token and --pve.token-file are mutually exclusive")
|
||||
}
|
||||
|
||||
if apiToken != "" {
|
||||
return apiToken, nil
|
||||
}
|
||||
|
||||
if tokenFile != "" {
|
||||
data, err := os.ReadFile(tokenFile)
|
||||
if err != nil {
|
||||
return "", fmt.Errorf("reading token file: %w", err)
|
||||
}
|
||||
token := strings.TrimSpace(string(data))
|
||||
if token == "" {
|
||||
return "", fmt.Errorf("token file %s is empty", tokenFile)
|
||||
}
|
||||
return token, nil
|
||||
}
|
||||
|
||||
if envToken := os.Getenv("PVE_API_TOKEN"); envToken != "" {
|
||||
return envToken, nil
|
||||
}
|
||||
|
||||
return "", fmt.Errorf("no API token provided: use --pve.api-token, --pve.token-file, or PVE_API_TOKEN env var")
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue