portainer/portainer

package helm

import (
    "fmt"
    "net/http"
    "net/url"

    "github.com/portainer/portainer/pkg/libhelm/options"
    httperror "github.com/portainer/portainer/pkg/libhttp/error"
    "github.com/portainer/portainer/pkg/libhttp/request"

    "github.com/pkg/errors"
    "github.com/rs/zerolog/log"
)

// @id HelmShow
// @summary Show Helm Chart Information
// @description
// @description **Access policy**: authenticated
// @tags helm
// @param repo query string true "Helm repository URL"
// @param chart query string true "Chart name"
// @param command path string true "chart/values/readme"
// @security ApiKeyAuth
// @security jwt
// @accept json
// @produce text/plain
// @success 200 {object} string "Success"
// @failure 401 "Unauthorized"
// @failure 404 "Environment(Endpoint) or ServiceAccount not found"
// @failure 500 "Server error"
// @router /templates/helm/{command} [get]
func (handler *Handler) helmShow(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
    repo := r.URL.Query().Get("repo")
    if repo == "" {
        return httperror.BadRequest("Bad request", errors.New("missing `repo` query parameter"))
    }
    _, err := url.ParseRequestURI(repo)
    if err != nil {
        return httperror.BadRequest("Bad request", errors.Wrap(err, fmt.Sprintf("provided URL %q is not valid", repo)))
    }

    chart := r.URL.Query().Get("chart")
    if chart == "" {
        return httperror.BadRequest("Bad request", errors.New("missing `chart` query parameter"))
    }

    cmd, err := request.RetrieveRouteVariableValue(r, "command")
    if err != nil {
        cmd = "all"
        log.Debug().Str("default_command", cmd).Msg("command not provided, using default")
    }

    showOptions := options.ShowOptions{
        OutputFormat: options.ShowOutputFormat(cmd),
        Chart:        chart,
        Repo:         repo,
    }
    result, err := handler.helmPackageManager.Show(showOptions)
    if err != nil {
        return httperror.InternalServerError("Unable to show chart", err)
    }

    w.Header().Set("Content-Type", "text/plain")
    w.Write(result)

    return nil
}