145 lines
3.3 KiB
Go
145 lines
3.3 KiB
Go
package admin
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import (
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"context"
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"fmt"
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"net/http"
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"time"
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_ "embed"
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"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
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"github.com/FAU-CDI/wisski-distillery/internal/dis/component/server/assets"
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"github.com/FAU-CDI/wisski-distillery/internal/dis/component/server/templating"
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"github.com/FAU-CDI/wisski-distillery/internal/status"
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"golang.org/x/sync/errgroup"
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)
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// Status produces a new observation of the distillery, and a new information of all instances
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// The information on all instances is passed the given quick flag.
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func (admin *Admin) Status(ctx context.Context, QuickInformation bool) (target status.Distillery, information []status.WissKI, err error) {
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var group errgroup.Group
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group.Go(func() error {
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// list all the instances
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all, err := admin.dependencies.Instances.All(ctx)
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if err != nil {
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return err
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}
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// get all of their info!
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information = make([]status.WissKI, len(all))
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for i, instance := range all {
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{
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i := i
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instance := instance
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// store the info for this group!
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group.Go(func() (err error) {
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information[i], err = instance.Info().Information(ctx, true)
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if err != nil {
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return fmt.Errorf("instance %q: %w", instance.Slug, err)
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}
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return
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})
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}
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}
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return nil
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})
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// gather all the observations
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flags := component.FetcherFlags{
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Context: ctx,
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}
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for _, o := range admin.dependencies.Fetchers {
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o := o
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group.Go(func() error {
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return o.Fetch(flags, &target)
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})
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}
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// wait for all the fetchers to finish
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if err := group.Wait(); err != nil {
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return status.Distillery{}, nil, err
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}
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// count overall instances
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for _, i := range information {
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if i.Running {
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target.RunningCount++
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} else {
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target.StoppedCount++
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}
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}
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target.TotalCount = len(information)
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return
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}
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func (admin *Admin) Fetch(flags component.FetcherFlags, target *status.Distillery) error {
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target.Time = time.Now().UTC()
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target.Config = component.GetStill(admin).Config
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return nil
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}
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//go:embed "html/index.html"
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var indexHTML []byte
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var indexTemplate = templating.Parse[indexContext](
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"index.html", indexHTML, nil,
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templating.Title("Admin"),
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templating.Assets(assets.AssetsAdmin),
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templating.Crumbs(
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menuAdmin,
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),
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)
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//go:embed "html/instances.html"
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var instancesHTML []byte
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var instancesTemplate = templating.Parse[indexContext](
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"instances.html", instancesHTML, nil,
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templating.Title("Instances"),
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templating.Assets(assets.AssetsAdmin),
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)
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type indexContext struct {
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templating.RuntimeFlags
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status.Distillery
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Instances []status.WissKI
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}
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func (admin *Admin) index(context.Context) http.Handler {
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tpl := indexTemplate.Prepare(
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admin.dependencies.Templating,
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templating.Actions(
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menuUsers,
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menuInstances,
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),
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)
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return tpl.HTMLHandler(admin.dependencies.Handling, func(r *http.Request) (idx indexContext, err error) {
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idx.Distillery, idx.Instances, err = admin.Status(r.Context(), false)
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return
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})
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}
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func (admin *Admin) instances(context.Context) http.Handler {
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tpl := instancesTemplate.Prepare(
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admin.dependencies.Templating,
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templating.Crumbs(
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menuAdmin,
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menuInstances,
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),
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templating.Actions(
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menuProvision,
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),
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)
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return tpl.HTMLHandler(admin.dependencies.Handling, func(r *http.Request) (idx indexContext, err error) {
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idx.Distillery, idx.Instances, err = admin.Status(r.Context(), true)
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return
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})
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}
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