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6478d0a5ef
Grafana would forward the X-Grafana-User header to backend plugin request when dataproxy.send_user_header is enabled. In addition, X-Grafana-User will be automatically forwarded in outgoing HTTP requests for core/builtin HTTP datasources. Use grafana-plugin-sdk-go v0.147.0. Fixes #47734 Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>
104 lines
3.3 KiB
Go
104 lines
3.3 KiB
Go
package clientmiddleware
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import (
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"context"
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"net/http"
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"github.com/grafana/grafana-plugin-sdk-go/backend"
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sdkhttpclient "github.com/grafana/grafana-plugin-sdk-go/backend/httpclient"
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"github.com/grafana/grafana/pkg/infra/httpclient/httpclientprovider"
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"github.com/grafana/grafana/pkg/plugins"
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"github.com/grafana/grafana/pkg/services/contexthandler"
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"github.com/grafana/grafana/pkg/util/proxyutil"
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)
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// NewUserHeaderMiddleware creates a new plugins.ClientMiddleware that will
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// populate the X-Grafana-User header on outgoing plugins.Client and HTTP
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// requests.
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func NewUserHeaderMiddleware() plugins.ClientMiddleware {
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return plugins.ClientMiddlewareFunc(func(next plugins.Client) plugins.Client {
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return &UserHeaderMiddleware{
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next: next,
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}
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})
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}
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type UserHeaderMiddleware struct {
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next plugins.Client
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}
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func (m *UserHeaderMiddleware) applyToken(ctx context.Context, pCtx backend.PluginContext, h backend.ForwardHTTPHeaders) context.Context {
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reqCtx := contexthandler.FromContext(ctx)
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// if no HTTP request context skip middleware
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if h == nil || reqCtx == nil || reqCtx.Req == nil || reqCtx.SignedInUser == nil {
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return ctx
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}
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h.DeleteHTTPHeader(proxyutil.UserHeaderName)
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if !reqCtx.IsAnonymous {
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h.SetHTTPHeader(proxyutil.UserHeaderName, reqCtx.Login)
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}
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middlewares := []sdkhttpclient.Middleware{}
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if !reqCtx.IsAnonymous {
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httpHeaders := http.Header{
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proxyutil.UserHeaderName: []string{reqCtx.Login},
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}
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middlewares = append(middlewares, httpclientprovider.SetHeadersMiddleware(httpHeaders))
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} else {
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middlewares = append(middlewares, httpclientprovider.DeleteHeadersMiddleware(proxyutil.UserHeaderName))
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}
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ctx = sdkhttpclient.WithContextualMiddleware(ctx, middlewares...)
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return ctx
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}
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func (m *UserHeaderMiddleware) 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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ctx = m.applyToken(ctx, req.PluginContext, req)
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return m.next.QueryData(ctx, req)
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}
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func (m *UserHeaderMiddleware) 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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ctx = m.applyToken(ctx, req.PluginContext, req)
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return m.next.CallResource(ctx, req, sender)
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}
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func (m *UserHeaderMiddleware) 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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ctx = m.applyToken(ctx, req.PluginContext, req)
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return m.next.CheckHealth(ctx, req)
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}
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func (m *UserHeaderMiddleware) 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 *UserHeaderMiddleware) 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 *UserHeaderMiddleware) 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 *UserHeaderMiddleware) 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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