prometheus-paperless-exporter/storagepath.go

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package main
import (
"context"
"strconv"
"github.com/hansmi/paperhooks/pkg/client"
"github.com/prometheus/client_golang/prometheus"
)
type storagePathClient interface {
ListAllStoragePaths(context.Context, *client.ListStoragePathsOptions, func(context.Context, client.StoragePath) error) error
}
type storagePathCollector struct {
cl storagePathClient
infoDesc *prometheus.Desc
docCountDesc *prometheus.Desc
}
func newStoragePathCollector(cl storagePathClient) *storagePathCollector {
return &storagePathCollector{
cl: cl,
infoDesc: prometheus.NewDesc("paperless_storage_path_info",
"Static information about a storage path.",
[]string{"id", "name", "slug"}, nil),
docCountDesc: prometheus.NewDesc("paperless_storage_path_document_count",
"Number of documents associated with a storage path.",
[]string{"id"}, nil),
}
}
func (c *storagePathCollector) describe(ch chan<- *prometheus.Desc) {
ch <- c.infoDesc
ch <- c.docCountDesc
}
func (c *storagePathCollector) collect(ctx context.Context, ch chan<- prometheus.Metric) error {
opts := &client.ListStoragePathsOptions{}
opts.Ordering.Field = "name"
return c.cl.ListAllStoragePaths(ctx, opts, func(_ context.Context, sp client.StoragePath) error {
id := strconv.FormatInt(sp.ID, 10)
ch <- prometheus.MustNewConstMetric(c.infoDesc, prometheus.GaugeValue, 1,
id,
sp.Name,
sp.Slug,
)
ch <- prometheus.MustNewConstMetric(c.docCountDesc, prometheus.GaugeValue,
float64(sp.DocumentCount), id)
return nil
})
}