mirror of
https://github.com/grafana/grafana.git
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bb849d53bf
Moves the details of loading plugins into the backend plugin manager from the respective plugin (datasource, transform and renderer).
79 lines
2.6 KiB
Go
79 lines
2.6 KiB
Go
package plugins
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import (
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"encoding/json"
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"path"
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"github.com/grafana/grafana/pkg/plugins/backendplugin"
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"github.com/grafana/grafana/pkg/util/errutil"
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"github.com/grafana/grafana/pkg/infra/log"
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"github.com/grafana/grafana/pkg/models"
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"github.com/grafana/grafana/pkg/plugins/datasource/wrapper"
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"github.com/grafana/grafana/pkg/tsdb"
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)
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// DataSourcePlugin contains all metadata about a datasource plugin
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type DataSourcePlugin struct {
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FrontendPluginBase
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Annotations bool `json:"annotations"`
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Metrics bool `json:"metrics"`
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Alerting bool `json:"alerting"`
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Explore bool `json:"explore"`
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Table bool `json:"tables"`
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Logs bool `json:"logs"`
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QueryOptions map[string]bool `json:"queryOptions,omitempty"`
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BuiltIn bool `json:"builtIn,omitempty"`
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Mixed bool `json:"mixed,omitempty"`
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Routes []*AppPluginRoute `json:"routes"`
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Streaming bool `json:"streaming"`
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Backend bool `json:"backend,omitempty"`
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Executable string `json:"executable,omitempty"`
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SDK bool `json:"sdk,omitempty"`
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}
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func (p *DataSourcePlugin) Load(decoder *json.Decoder, pluginDir string) error {
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if err := decoder.Decode(p); err != nil {
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return errutil.Wrapf(err, "Failed to decode datasource plugin")
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}
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if err := p.registerPlugin(pluginDir); err != nil {
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return errutil.Wrapf(err, "Failed to register plugin")
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}
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if p.Backend {
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cmd := ComposePluginStartCommmand(p.Executable)
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fullpath := path.Join(p.PluginDir, cmd)
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descriptor := backendplugin.NewBackendPluginDescriptor(p.Id, fullpath, backendplugin.PluginStartFuncs{
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OnLegacyStart: p.onLegacyPluginStart,
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OnStart: p.onPluginStart,
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})
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if err := backendplugin.Register(descriptor); err != nil {
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return errutil.Wrapf(err, "Failed to register backend plugin")
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}
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}
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DataSources[p.Id] = p
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return nil
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}
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func (p *DataSourcePlugin) onLegacyPluginStart(pluginID string, client *backendplugin.LegacyClient, logger log.Logger) error {
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tsdb.RegisterTsdbQueryEndpoint(pluginID, func(dsInfo *models.DataSource) (tsdb.TsdbQueryEndpoint, error) {
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return wrapper.NewDatasourcePluginWrapper(logger, client.DatasourcePlugin), nil
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})
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return nil
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}
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func (p *DataSourcePlugin) onPluginStart(pluginID string, client *backendplugin.Client, logger log.Logger) error {
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if client.BackendPlugin != nil {
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tsdb.RegisterTsdbQueryEndpoint(pluginID, func(dsInfo *models.DataSource) (tsdb.TsdbQueryEndpoint, error) {
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return wrapper.NewDatasourcePluginWrapperV2(logger, client.BackendPlugin), nil
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})
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}
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return nil
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}
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