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c8af659f02
* Plugins: Enhanced plugin instrumentation * use backend.CallResourceResponseSenderFunc * sdk v0.237.0 * support admission control * cover all handlers in log and metrics middlewares * fix after review
72 lines
3.2 KiB
Go
72 lines
3.2 KiB
Go
package cloudwatch
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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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"net/http"
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"net/url"
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"github.com/grafana/grafana-plugin-sdk-go/backend"
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"github.com/grafana/grafana-plugin-sdk-go/backend/log"
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"github.com/grafana/grafana/pkg/tsdb/cloudwatch/routes"
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)
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func (e *cloudWatchExecutor) newResourceMux() *http.ServeMux {
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mux := http.NewServeMux()
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mux.HandleFunc("/ebs-volume-ids", handleResourceReq(e.handleGetEbsVolumeIds, e.logger))
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mux.HandleFunc("/ec2-instance-attribute", handleResourceReq(e.handleGetEc2InstanceAttribute, e.logger))
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mux.HandleFunc("/resource-arns", handleResourceReq(e.handleGetResourceArns, e.logger))
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mux.HandleFunc("/log-groups", routes.ResourceRequestMiddleware(routes.LogGroupsHandler, e.logger, e.getRequestContext))
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mux.HandleFunc("/metrics", routes.ResourceRequestMiddleware(routes.MetricsHandler, e.logger, e.getRequestContext))
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mux.HandleFunc("/dimension-values", routes.ResourceRequestMiddleware(routes.DimensionValuesHandler, e.logger, e.getRequestContext))
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mux.HandleFunc("/dimension-keys", routes.ResourceRequestMiddleware(routes.DimensionKeysHandler, e.logger, e.getRequestContext))
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mux.HandleFunc("/accounts", routes.ResourceRequestMiddleware(routes.AccountsHandler, e.logger, e.getRequestContext))
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mux.HandleFunc("/namespaces", routes.ResourceRequestMiddleware(routes.NamespacesHandler, e.logger, e.getRequestContext))
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mux.HandleFunc("/log-group-fields", routes.ResourceRequestMiddleware(routes.LogGroupFieldsHandler, e.logger, e.getRequestContext))
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mux.HandleFunc("/external-id", routes.ResourceRequestMiddleware(routes.ExternalIdHandler, e.logger, e.getRequestContextOnlySettings))
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mux.HandleFunc("/regions", routes.ResourceRequestMiddleware(routes.RegionsHandler, e.logger, e.getRequestContext))
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// remove this once AWS's Cross Account Observability is supported in GovCloud
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mux.HandleFunc("/legacy-log-groups", handleResourceReq(e.handleGetLogGroups, e.logger))
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return mux
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}
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type handleFn func(ctx context.Context, pluginCtx backend.PluginContext, parameters url.Values) ([]suggestData, error)
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func handleResourceReq(handleFunc handleFn, logger log.Logger) func(rw http.ResponseWriter, req *http.Request) {
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return func(rw http.ResponseWriter, req *http.Request) {
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ctx := req.Context()
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pluginContext := backend.PluginConfigFromContext(ctx)
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err := req.ParseForm()
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if err != nil {
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writeResponse(rw, http.StatusBadRequest, fmt.Sprintf("unexpected error %v", err), logger.FromContext(ctx))
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return
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}
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data, err := handleFunc(ctx, pluginContext, req.URL.Query())
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if err != nil {
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writeResponse(rw, http.StatusBadRequest, fmt.Sprintf("unexpected error %v", err), logger.FromContext(ctx))
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return
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}
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body, err := json.Marshal(data)
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if err != nil {
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writeResponse(rw, http.StatusBadRequest, fmt.Sprintf("unexpected error %v", err), logger.FromContext(ctx))
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return
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}
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rw.WriteHeader(http.StatusOK)
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_, err = rw.Write(body)
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if err != nil {
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logger.FromContext(ctx).Error("Unable to write HTTP response", "error", err)
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return
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}
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}
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}
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func writeResponse(rw http.ResponseWriter, code int, msg string, logger log.Logger) {
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rw.WriteHeader(code)
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_, err := rw.Write([]byte(msg))
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if err != nil {
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logger.Error("Unable to write HTTP response", "error", err)
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}
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}
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