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110 lines
3.3 KiB
Go
110 lines
3.3 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/components/simplejson"
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"github.com/grafana/grafana/pkg/plugins"
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"github.com/grafana/grafana/pkg/services/auth"
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"github.com/grafana/grafana/pkg/services/contexthandler"
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"github.com/grafana/grafana/pkg/services/datasources"
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)
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const forwardIDHeaderName = "X-Grafana-Id"
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// NewForwardIDMiddleware creates a new plugins.ClientMiddleware that will
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// set grafana id header on outgoing plugins.Client requests if the
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// feature toggle FlagIdForwarding is enabled
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func NewForwardIDMiddleware() plugins.ClientMiddleware {
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return plugins.ClientMiddlewareFunc(func(next plugins.Client) plugins.Client {
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return &ForwardIDMiddleware{
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next: next,
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}
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})
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}
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type ForwardIDMiddleware struct {
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next plugins.Client
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}
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func (m *ForwardIDMiddleware) applyToken(ctx context.Context, pCtx backend.PluginContext, req backend.ForwardHTTPHeaders) error {
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reqCtx := contexthandler.FromContext(ctx)
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// if request not for a datasource or no HTTP request context skip middleware
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if req == nil || reqCtx == nil || reqCtx.SignedInUser == nil || pCtx.DataSourceInstanceSettings == nil {
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return nil
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}
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jsonDataBytes, err := simplejson.NewJson(pCtx.DataSourceInstanceSettings.JSONData)
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if err != nil {
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return err
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}
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if !auth.IsIDForwardingEnabledForDataSource(&datasources.DataSource{JsonData: jsonDataBytes}) {
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return nil
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}
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// token will only be present if faeturemgmt.FlagIdForwarding is enabled
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if token := reqCtx.SignedInUser.GetIDToken(); token != "" {
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req.SetHTTPHeader(forwardIDHeaderName, token)
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}
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return nil
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}
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func (m *ForwardIDMiddleware) QueryData(ctx context.Context, req *backend.QueryDataRequest) (*backend.QueryDataResponse, error) {
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if req == nil {
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return m.next.QueryData(ctx, req)
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}
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err := m.applyToken(ctx, req.PluginContext, req)
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if err != nil {
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return nil, err
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}
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return m.next.QueryData(ctx, req)
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}
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func (m *ForwardIDMiddleware) CallResource(ctx context.Context, req *backend.CallResourceRequest, sender backend.CallResourceResponseSender) error {
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if req == nil {
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return m.next.CallResource(ctx, req, sender)
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}
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err := m.applyToken(ctx, req.PluginContext, req)
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if err != nil {
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return err
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}
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return m.next.CallResource(ctx, req, sender)
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}
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func (m *ForwardIDMiddleware) CheckHealth(ctx context.Context, req *backend.CheckHealthRequest) (*backend.CheckHealthResult, error) {
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if req == nil {
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return m.next.CheckHealth(ctx, req)
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}
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err := m.applyToken(ctx, req.PluginContext, req)
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if err != nil {
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return nil, err
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}
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return m.next.CheckHealth(ctx, req)
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}
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func (m *ForwardIDMiddleware) CollectMetrics(ctx context.Context, req *backend.CollectMetricsRequest) (*backend.CollectMetricsResult, error) {
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return m.next.CollectMetrics(ctx, req)
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}
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func (m *ForwardIDMiddleware) SubscribeStream(ctx context.Context, req *backend.SubscribeStreamRequest) (*backend.SubscribeStreamResponse, error) {
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return m.next.SubscribeStream(ctx, req)
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}
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func (m *ForwardIDMiddleware) PublishStream(ctx context.Context, req *backend.PublishStreamRequest) (*backend.PublishStreamResponse, error) {
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return m.next.PublishStream(ctx, req)
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}
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func (m *ForwardIDMiddleware) RunStream(ctx context.Context, req *backend.RunStreamRequest, sender *backend.StreamSender) error {
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return m.next.RunStream(ctx, req, sender)
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}
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