79 lines
2.0 KiB
Go
79 lines
2.0 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/services/contexthandler"
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)
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const forwardIDHeaderName = "X-Grafana-Id"
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// NewForwardIDMiddleware creates a new backend.HandlerMiddleware that will
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// set grafana id header on outgoing backend.Handler requests
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func NewForwardIDMiddleware() backend.HandlerMiddleware {
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return backend.HandlerMiddlewareFunc(func(next backend.Handler) backend.Handler {
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return &ForwardIDMiddleware{
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BaseHandler: backend.NewBaseHandler(next),
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}
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})
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}
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type ForwardIDMiddleware struct {
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backend.BaseHandler
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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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// no HTTP request context => skip middleware
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if req == nil || reqCtx == nil || reqCtx.SignedInUser == nil {
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return nil
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}
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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.BaseHandler.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.BaseHandler.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.BaseHandler.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.BaseHandler.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.BaseHandler.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.BaseHandler.CheckHealth(ctx, req)
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}
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