drone-yaml/yaml/env.go

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// Copyright 2019 Drone IO, Inc.
//
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// 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
//
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// http://www.apache.org/licenses/LICENSE-2.0
//
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// 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.
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package yaml
type (
// Variable represents an environment variable that
// can be defined as a string literal or as a reference
// to a secret.
Variable struct {
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Value string `json:"value,omitempty"`
Secret string `json:"from_secret,omitempty" yaml:"from_secret"`
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}
// variable is a tempoary type used to unmarshal
// variables with references to secrets.
variable struct {
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Value string
Secret string `yaml:"from_secret"`
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}
)
// UnmarshalYAML implements yaml unmarshalling.
func (v *Variable) UnmarshalYAML(unmarshal func(interface{}) error) error {
d := new(variable)
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err := unmarshal(&d.Value)
if err != nil {
err = unmarshal(d)
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}
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v.Value = d.Value
v.Secret = d.Secret
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return err
}
// MarshalYAML implements yaml marshalling.
func (v *Variable) MarshalYAML() (interface{}, error) {
if v.Secret != "" {
m := map[string]interface{}{}
m["from_secret"] = v.Secret
return m, nil
}
if v.Value != "" {
return v.Value, nil
}
return nil, nil
}