agola/internal/config/jsonnet.go
Simone Gotti d91ec09d7d config: add starlark config support
Handle `.agola/config.star` files in starlark config format.
To provide a context like done for jsonnet we require that the starlark agola
config file contains a main function that will receive a config context as a
dict.
We also had to implement our own json conversion from a starlark dict since go
starlark removed its own function.
2020-03-10 13:29:20 +01:00

39 lines
1.1 KiB
Go

// Copyright 2020 Sorint.lab
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied
// See the License for the specific language governing permissions and
// limitations under the License.
package config
import (
"encoding/json"
"github.com/google/go-jsonnet"
errors "golang.org/x/xerrors"
)
func execJsonnet(configData []byte, configContext *ConfigContext) ([]byte, error) {
vm := jsonnet.MakeVM()
cj, err := json.Marshal(configContext)
if err != nil {
return nil, errors.Errorf("failed to marshal config context: %w", err)
}
vm.TLACode("ctx", string(cj))
out, err := vm.EvaluateSnippet("", string(configData))
if err != nil {
return nil, errors.Errorf("failed to evaluate jsonnet config: %w", err)
}
return []byte(out), nil
}