mirror of
https://github.com/grafana/grafana.git
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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, backendPluginManager backendplugin.Manager) 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 := backendPluginManager.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.DataPlugin != nil {
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tsdb.RegisterTsdbQueryEndpoint(pluginID, func(dsInfo *models.DataSource) (tsdb.TsdbQueryEndpoint, error) {
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return wrapper.NewDatasourcePluginWrapperV2(logger, p.Id, p.Type, client.DataPlugin), nil
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})
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}
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return nil
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}
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