mirror of
https://github.com/grafana/grafana.git
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1e8e7e34f1
* 33959: Remove support for deprecated backend plugin protocol (v1) * 33959: Remove unused methods * 33959: Remove some additional unused code * 33959: Remove some additional unused code * 33959: Remove datasource plugin wrapper with test * 33959:Remove DefaultProtocolVersion
83 lines
2.6 KiB
Go
83 lines
2.6 KiB
Go
package plugins
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import (
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"context"
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"encoding/json"
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"fmt"
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"path/filepath"
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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/backendplugin"
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"github.com/grafana/grafana/pkg/plugins/backendplugin/grpcplugin"
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"github.com/grafana/grafana/pkg/util/errutil"
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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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Tracing bool `json:"tracing"`
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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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client *grpcplugin.Client
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logger log.Logger
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}
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func (p *DataSourcePlugin) Load(decoder *json.Decoder, base *PluginBase, backendPluginManager backendplugin.Manager) (
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interface{}, error) {
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if err := decoder.Decode(p); err != nil {
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return nil, errutil.Wrapf(err, "Failed to decode datasource plugin")
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}
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if p.Backend {
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cmd := ComposePluginStartCommand(p.Executable)
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fullpath := filepath.Join(base.PluginDir, cmd)
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factory := grpcplugin.NewBackendPlugin(p.Id, fullpath, grpcplugin.PluginStartFuncs{
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OnStart: p.onPluginStart,
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})
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if err := backendPluginManager.RegisterAndStart(context.Background(), p.Id, factory); err != nil {
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return nil, errutil.Wrapf(err, "failed to register backend plugin")
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}
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}
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return p, nil
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}
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func (p *DataSourcePlugin) DataQuery(ctx context.Context, dsInfo *models.DataSource, query DataQuery) (DataResponse, error) {
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if !p.CanHandleDataQueries() {
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return DataResponse{}, fmt.Errorf("plugin %q can't handle data queries", p.Id)
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}
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endpoint := newDataSourcePluginWrapperV2(p.logger, p.Id, p.Type, p.client.DataPlugin)
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return endpoint.Query(ctx, dsInfo, query)
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}
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func (p *DataSourcePlugin) CanHandleDataQueries() bool {
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return p.client != nil
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}
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func (p *DataSourcePlugin) onPluginStart(pluginID string, client *grpcplugin.Client, logger log.Logger) error {
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if client.DataPlugin == nil {
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return nil
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}
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p.client = client
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p.logger = logger
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return nil
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}
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