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// Copyright 2016 The Prometheus Authors
// 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.
// This package no longer handles safe yaml parsing. In order to
// ensure correct yaml unmarshalling, use "yaml.UnmarshalStrict()".
package config
import (
"encoding/json"
"net/http"
"path/filepath"
)
const secretToken = "<secret>"
// Secret special type for storing secrets.
type Secret string
// MarshalSecretValue if set to true will expose Secret type
// through the marshal interfaces. Useful for outside projects
// that load and marshal the Prometheus config.
var MarshalSecretValue bool = false
// MarshalYAML implements the yaml.Marshaler interface for Secrets.
func (s Secret) MarshalYAML() (interface{}, error) {
if MarshalSecretValue {
return string(s), nil
}
if s != "" {
return secretToken, nil
}
return nil, nil
}
// UnmarshalYAML implements the yaml.Unmarshaler interface for Secrets.
func (s *Secret) UnmarshalYAML(unmarshal func(interface{}) error) error {
type plain Secret
return unmarshal((*plain)(s))
}
// MarshalJSON implements the json.Marshaler interface for Secret.
func (s Secret) MarshalJSON() ([]byte, error) {
if MarshalSecretValue {
return json.Marshal(string(s))
}
if len(s) == 0 {
return json.Marshal("")
}
return json.Marshal(secretToken)
}
type ProxyHeader map[string][]Secret
func (h *ProxyHeader) HTTPHeader() http.Header {
if h == nil || *h == nil {
return nil
}
header := make(http.Header)
for name, values := range *h {
var s []string
if values != nil {
s = make([]string, 0, len(values))
for _, value := range values {
s = append(s, string(value))
}
}
header[name] = s
}
return header
}
// DirectorySetter is a config type that contains file paths that may
// be relative to the file containing the config.
type DirectorySetter interface {
// SetDirectory joins any relative file paths with dir.
// Any paths that are empty or absolute remain unchanged.
SetDirectory(dir string)
}
// JoinDir joins dir and path if path is relative.
// If path is empty or absolute, it is returned unchanged.
func JoinDir(dir, path string) string {
if path == "" || filepath.IsAbs(path) {
return path
}
return filepath.Join(dir, path)
}
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