portainer/portainer

package endpointproxy

import (
    "net/http"
    "strconv"

    portainer "github.com/portainer/portainer/api"
    httperror "github.com/portainer/portainer/pkg/libhttp/error"
    "github.com/portainer/portainer/pkg/libhttp/request"
)

func (handler *Handler) proxyRequestsToAzureAPI(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
    endpointID, err := request.RetrieveNumericRouteVariableValue(r, "id")
    if err != nil {
        return httperror.BadRequest("Invalid environment identifier route variable", err)
    }

    endpoint, err := handler.DataStore.Endpoint().Endpoint(portainer.EndpointID(endpointID))
    if handler.DataStore.IsErrObjectNotFound(err) {
        return httperror.NotFound("Unable to find an environment with the specified identifier inside the database", err)
    } else if err != nil {
        return httperror.InternalServerError("Unable to find an environment with the specified identifier inside the database", err)
    }

    err = handler.requestBouncer.AuthorizedEndpointOperation(r, endpoint)
    if err != nil {
        return httperror.Forbidden("Permission denied to access environment", err)
    }

    var proxy http.Handler
    proxy = handler.ProxyManager.GetEndpointProxy(endpoint)
    if proxy == nil {
        proxy, err = handler.ProxyManager.CreateAndRegisterEndpointProxy(endpoint)
        if err != nil {
            return httperror.InternalServerError("Unable to create proxy", err)
        }
    }

    id := strconv.Itoa(endpointID)
    http.StripPrefix("/"+id+"/azure", proxy).ServeHTTP(w, r)
    return nil
}