87 lines
3.6 KiB
Go
87 lines
3.6 KiB
Go
package clientmiddleware
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import (
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"context"
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"github.com/grafana/grafana-plugin-sdk-go/backend"
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"github.com/grafana/grafana/pkg/plugins/pluginrequestmeta"
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)
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// NewPluginRequestMetaMiddleware returns a new backend.HandlerMiddleware that sets up the default
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// values for the plugin request meta in the context.Context. All middlewares that are executed
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// after this one are be able to access plugin request meta via the pluginrequestmeta package.
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func NewPluginRequestMetaMiddleware() backend.HandlerMiddleware {
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return backend.HandlerMiddlewareFunc(func(next backend.Handler) backend.Handler {
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return &PluginRequestMetaMiddleware{
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BaseHandler: backend.NewBaseHandler(next),
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defaultStatusSource: pluginrequestmeta.DefaultStatusSource,
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}
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})
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}
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type PluginRequestMetaMiddleware struct {
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backend.BaseHandler
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defaultStatusSource pluginrequestmeta.StatusSource
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}
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func (m *PluginRequestMetaMiddleware) withDefaultPluginRequestMeta(ctx context.Context) context.Context {
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// Setup plugin request status source
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ctx = pluginrequestmeta.WithStatusSource(ctx, m.defaultStatusSource)
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return ctx
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}
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func (m *PluginRequestMetaMiddleware) QueryData(ctx context.Context, req *backend.QueryDataRequest) (*backend.QueryDataResponse, error) {
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ctx = m.withDefaultPluginRequestMeta(ctx)
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return m.BaseHandler.QueryData(ctx, req)
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}
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func (m *PluginRequestMetaMiddleware) CallResource(ctx context.Context, req *backend.CallResourceRequest, sender backend.CallResourceResponseSender) error {
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ctx = m.withDefaultPluginRequestMeta(ctx)
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return m.BaseHandler.CallResource(ctx, req, sender)
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}
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func (m *PluginRequestMetaMiddleware) CheckHealth(ctx context.Context, req *backend.CheckHealthRequest) (*backend.CheckHealthResult, error) {
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ctx = m.withDefaultPluginRequestMeta(ctx)
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return m.BaseHandler.CheckHealth(ctx, req)
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}
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func (m *PluginRequestMetaMiddleware) CollectMetrics(ctx context.Context, req *backend.CollectMetricsRequest) (*backend.CollectMetricsResult, error) {
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ctx = m.withDefaultPluginRequestMeta(ctx)
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return m.BaseHandler.CollectMetrics(ctx, req)
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}
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func (m *PluginRequestMetaMiddleware) SubscribeStream(ctx context.Context, req *backend.SubscribeStreamRequest) (*backend.SubscribeStreamResponse, error) {
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ctx = m.withDefaultPluginRequestMeta(ctx)
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return m.BaseHandler.SubscribeStream(ctx, req)
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}
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func (m *PluginRequestMetaMiddleware) PublishStream(ctx context.Context, req *backend.PublishStreamRequest) (*backend.PublishStreamResponse, error) {
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ctx = m.withDefaultPluginRequestMeta(ctx)
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return m.BaseHandler.PublishStream(ctx, req)
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}
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func (m *PluginRequestMetaMiddleware) RunStream(ctx context.Context, req *backend.RunStreamRequest, sender *backend.StreamSender) error {
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ctx = m.withDefaultPluginRequestMeta(ctx)
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return m.BaseHandler.RunStream(ctx, req, sender)
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}
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// ValidateAdmission implements backend.AdmissionHandler.
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func (m *PluginRequestMetaMiddleware) ValidateAdmission(ctx context.Context, req *backend.AdmissionRequest) (*backend.ValidationResponse, error) {
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ctx = m.withDefaultPluginRequestMeta(ctx)
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return m.BaseHandler.ValidateAdmission(ctx, req)
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}
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// MutateAdmission implements backend.AdmissionHandler.
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func (m *PluginRequestMetaMiddleware) MutateAdmission(ctx context.Context, req *backend.AdmissionRequest) (*backend.MutationResponse, error) {
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ctx = m.withDefaultPluginRequestMeta(ctx)
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return m.BaseHandler.MutateAdmission(ctx, req)
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}
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// ConvertObject implements backend.AdmissionHandler.
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func (m *PluginRequestMetaMiddleware) ConvertObjects(ctx context.Context, req *backend.ConversionRequest) (*backend.ConversionResponse, error) {
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ctx = m.withDefaultPluginRequestMeta(ctx)
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return m.BaseHandler.ConvertObjects(ctx, req)
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}
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