87 lines
1.5 KiB
Go
87 lines
1.5 KiB
Go
package updater
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import (
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"log"
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"os"
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"path/filepath"
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"github.com/coreos/kube-prometheus/grafana-watcher/grafana"
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)
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type Updater interface {
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OnModify() error
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}
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type GrafanaDashboardUpdater struct {
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client grafana.DashboardsInterface
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glob string
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}
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func NewGrafanaDashboardUpdater(c grafana.DashboardsInterface, g string) Updater {
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return &GrafanaDashboardUpdater{
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client: c,
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glob: g,
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}
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}
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func (u *GrafanaDashboardUpdater) OnModify() error {
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err := u.deleteAllDashboards()
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if err != nil {
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return err
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}
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err = u.createDashboardsFromFiles()
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if err != nil {
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return err
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}
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return nil
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}
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func (u *GrafanaDashboardUpdater) deleteAllDashboards() error {
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log.Println("Retrieving existing dashboards")
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searchResults, err := u.client.Search()
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if err != nil {
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return err
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}
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log.Printf("Deleting %d dashboards\n", len(searchResults))
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for _, d := range searchResults {
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log.Println("Deleting dashboard:", d.Slug())
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err := u.client.Delete(d.Slug())
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (u *GrafanaDashboardUpdater) createDashboardsFromFiles() error {
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filePaths, err := filepath.Glob(u.glob)
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if err != nil {
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return err
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}
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for _, fp := range filePaths {
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u.createDashboardFromFile(fp)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (u *GrafanaDashboardUpdater) createDashboardFromFile(filePath string) error {
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log.Println("Creating dashboard from:", filePath)
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f, err := os.Open(filePath)
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if err != nil {
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return err
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}
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defer f.Close()
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return u.client.Create(f)
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}
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