mirror of https://github.com/prometheus/prometheus
139 lines
4.2 KiB
Go
139 lines
4.2 KiB
Go
// Copyright 2013 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package config
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import (
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"fmt"
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"net/url"
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yaml_util "github.com/prometheus/prometheus/util/yaml"
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)
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// Secret special type for storing secrets.
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type Secret string
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// UnmarshalYAML implements the yaml.Unmarshaler interface for Secrets.
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func (s *Secret) UnmarshalYAML(unmarshal func(interface{}) error) error {
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type plain Secret
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return unmarshal((*plain)(s))
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}
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// MarshalYAML implements the yaml.Marshaler interface for Secrets.
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func (s Secret) MarshalYAML() (interface{}, error) {
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if s != "" {
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return "<secret>", nil
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}
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return nil, nil
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}
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// TLSConfig configures the options for TLS connections.
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type TLSConfig struct {
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// The CA cert to use for the targets.
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CAFile string `yaml:"ca_file,omitempty"`
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// The client cert file for the targets.
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CertFile string `yaml:"cert_file,omitempty"`
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// The client key file for the targets.
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KeyFile string `yaml:"key_file,omitempty"`
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// Used to verify the hostname for the targets.
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ServerName string `yaml:"server_name,omitempty"`
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// Disable target certificate validation.
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InsecureSkipVerify bool `yaml:"insecure_skip_verify"`
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// Catches all undefined fields and must be empty after parsing.
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XXX map[string]interface{} `yaml:",inline"`
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}
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// UnmarshalYAML implements the yaml.Unmarshaler interface.
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func (c *TLSConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
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type plain TLSConfig
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if err := unmarshal((*plain)(c)); err != nil {
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return err
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}
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return yaml_util.CheckOverflow(c.XXX, "TLS config")
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}
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// BasicAuth contains basic HTTP authentication credentials.
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type BasicAuth struct {
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Username string `yaml:"username"`
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Password Secret `yaml:"password"`
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// Catches all undefined fields and must be empty after parsing.
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XXX map[string]interface{} `yaml:",inline"`
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}
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// UnmarshalYAML implements the yaml.Unmarshaler interface.
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func (a *BasicAuth) UnmarshalYAML(unmarshal func(interface{}) error) error {
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type plain BasicAuth
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err := unmarshal((*plain)(a))
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if err != nil {
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return err
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}
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return yaml_util.CheckOverflow(a.XXX, "basic_auth")
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}
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// URL is a custom URL type that allows validation at configuration load time.
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type URL struct {
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*url.URL
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}
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// UnmarshalYAML implements the yaml.Unmarshaler interface for URLs.
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func (u *URL) UnmarshalYAML(unmarshal func(interface{}) error) error {
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var s string
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if err := unmarshal(&s); err != nil {
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return err
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}
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urlp, err := url.Parse(s)
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if err != nil {
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return err
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}
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u.URL = urlp
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return nil
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}
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// MarshalYAML implements the yaml.Marshaler interface for URLs.
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func (u URL) MarshalYAML() (interface{}, error) {
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if u.URL != nil {
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return u.String(), nil
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}
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return nil, nil
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}
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// HTTPClientConfig configures an HTTP client.
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type HTTPClientConfig struct {
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// The HTTP basic authentication credentials for the targets.
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BasicAuth *BasicAuth `yaml:"basic_auth,omitempty"`
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// The bearer token for the targets.
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BearerToken Secret `yaml:"bearer_token,omitempty"`
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// The bearer token file for the targets.
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BearerTokenFile string `yaml:"bearer_token_file,omitempty"`
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// HTTP proxy server to use to connect to the targets.
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ProxyURL URL `yaml:"proxy_url,omitempty"`
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// TLSConfig to use to connect to the targets.
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TLSConfig TLSConfig `yaml:"tls_config,omitempty"`
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// Catches all undefined fields and must be empty after parsing.
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XXX map[string]interface{} `yaml:",inline"`
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}
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func (c *HTTPClientConfig) Validate() error {
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if len(c.BearerToken) > 0 && len(c.BearerTokenFile) > 0 {
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return fmt.Errorf("at most one of bearer_token & bearer_token_file must be configured")
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}
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if c.BasicAuth != nil && (len(c.BearerToken) > 0 || len(c.BearerTokenFile) > 0) {
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return fmt.Errorf("at most one of basic_auth, bearer_token & bearer_token_file must be configured")
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}
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return nil
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}
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