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43 lines
1.4 KiB
Go
43 lines
1.4 KiB
Go
package features
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import (
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"context"
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"time"
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"github.com/grafana/grafana/pkg/infra/log"
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"github.com/grafana/grafana-plugin-sdk-go/backend"
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"github.com/grafana/grafana/pkg/models"
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)
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var (
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logger = log.New("live.features") // scoped to all features?
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)
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// BroadcastRunner will simply broadcast all events to `grafana/broadcast/*` channels
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// This assumes that data is a JSON object
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type BroadcastRunner struct{}
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// GetHandlerForPath called on init
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func (b *BroadcastRunner) GetHandlerForPath(path string) (models.ChannelHandler, error) {
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return b, nil // all dashboards share the same handler
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}
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// OnSubscribe will let anyone connect to the path
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func (b *BroadcastRunner) OnSubscribe(ctx context.Context, _ *models.SignedInUser, e models.SubscribeEvent) (models.SubscribeReply, backend.SubscribeStreamStatus, error) {
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return models.SubscribeReply{
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Presence: true,
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JoinLeave: true,
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Recover: true, // loads the saved value from history
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}, backend.SubscribeStreamStatusOK, nil
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}
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// OnPublish is called when a client wants to broadcast on the websocket
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func (b *BroadcastRunner) OnPublish(ctx context.Context, _ *models.SignedInUser, e models.PublishEvent) (models.PublishReply, backend.PublishStreamStatus, error) {
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return models.PublishReply{
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HistorySize: 1, // The last message is saved for 10 min.
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HistoryTTL: 10 * time.Minute,
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}, backend.PublishStreamStatusOK, nil
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}
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