Alexander Emelin
336bc559a3
This pull request migrates testdata to coreplugin streaming capabilities, this is mostly a working concept of streaming plugins at the moment, the work will continue in the following pull requests.
58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
package live
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import (
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"context"
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"fmt"
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"github.com/centrifugal/centrifuge"
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"github.com/grafana/grafana-plugin-sdk-go/backend"
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"github.com/grafana/grafana/pkg/plugins/plugincontext"
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)
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type pluginChannelPublisher struct {
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node *centrifuge.Node
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}
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func newPluginChannelPublisher(node *centrifuge.Node) *pluginChannelPublisher {
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return &pluginChannelPublisher{node: node}
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}
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func (p *pluginChannelPublisher) Publish(channel string, data []byte) error {
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_, err := p.node.Publish(channel, data)
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return err
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}
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type pluginPresenceGetter struct {
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node *centrifuge.Node
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}
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func newPluginPresenceGetter(node *centrifuge.Node) *pluginPresenceGetter {
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return &pluginPresenceGetter{node: node}
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}
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func (p *pluginPresenceGetter) GetNumSubscribers(channel string) (int, error) {
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res, err := p.node.PresenceStats(channel)
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if err != nil {
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return 0, err
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}
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return res.NumClients, nil
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}
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type pluginContextGetter struct {
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PluginContextProvider *plugincontext.Provider
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}
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func newPluginContextGetter(pluginContextProvider *plugincontext.Provider) *pluginContextGetter {
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return &pluginContextGetter{
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PluginContextProvider: pluginContextProvider,
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}
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}
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func (g *pluginContextGetter) GetPluginContext(ctx context.Context, pluginID string, datasourceUID string) (backend.PluginContext, bool, error) {
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user, ok := getContextSignedUser(ctx)
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if !ok {
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return backend.PluginContext{}, false, fmt.Errorf("no signed user found in context")
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}
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return g.PluginContextProvider.Get(pluginID, datasourceUID, user)
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}
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