Files
kubescape/httphandler/handlerequests/v1/prometheus.go
2022-07-18 23:59:56 +03:00

82 lines
2.7 KiB
Go

package v1
import (
"fmt"
"net/http"
"os"
"path/filepath"
"github.com/armosec/kubescape/v2/core/cautils"
utilsapisv1 "github.com/armosec/opa-utils/httpserver/apis/v1"
logger "github.com/dwertent/go-logger"
"github.com/dwertent/go-logger/helpers"
"github.com/google/uuid"
)
// Metrics http listener for prometheus support
func (handler *HTTPHandler) Metrics(w http.ResponseWriter, r *http.Request) {
scanID := uuid.NewString()
handler.state.setBusy(scanID)
defer handler.state.setNotBusy(scanID)
resultsFile := filepath.Join(OutputDir, scanID)
scanInfo := getPrometheusDefaultScanCommand(scanID, resultsFile)
scanParams := &scanRequestParams{
scanQueryParams: &ScanQueryParams{
ReturnResults: true,
KeepResults: false,
},
scanInfo: scanInfo,
scanID: scanID,
}
handler.scanResponseChan.set(scanID) // add scan to channel
defer handler.scanResponseChan.delete(scanID)
// send to scan queue
logger.L().Info("requesting scan", helpers.String("scanID", scanID), helpers.String("api", "v1/metrics"))
handler.scanRequestChan <- scanParams
// wait for scan to complete
results := <-handler.scanResponseChan.get(scanID)
defer removeResultsFile(scanID) // remove json format results file
defer os.Remove(resultsFile) // remove prometheus format results file
// handle response
if results.Type == utilsapisv1.ErrorScanResponseType {
w.WriteHeader(http.StatusInternalServerError)
w.Write(responseToBytes(results))
return
}
// read prometheus format results file
f, err := os.ReadFile(resultsFile)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
results.Type = utilsapisv1.ErrorScanResponseType
results.Response = fmt.Sprintf("failed read results from file. reason: %s", err.Error())
w.Write(responseToBytes(results))
return
}
w.WriteHeader(http.StatusOK)
w.Write(f)
}
func getPrometheusDefaultScanCommand(scanID, resultsFile string) *cautils.ScanInfo {
scanInfo := defaultScanInfo()
scanInfo.Submit = false // do not submit results every scan
scanInfo.Local = true // do not submit results every scan
scanInfo.FrameworkScan = true
scanInfo.ScanAll = true // scan all frameworks
scanInfo.ScanID = scanID // scan ID
scanInfo.FailThreshold = 100 // Do not fail scanning
scanInfo.Output = resultsFile // results output
scanInfo.Format = envToString("KS_FORMAT", "prometheus") // default output should be json
scanInfo.HostSensorEnabled.SetBool(envToBool("KS_ENABLE_HOST_SCANNER", false)) // enable host scanner
return scanInfo
}