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155 lines
4.4 KiB
155 lines
4.4 KiB
// Copyright 2021 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 ovhcloud |
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import ( |
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"context" |
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"errors" |
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"fmt" |
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"net/netip" |
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"time" |
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"github.com/go-kit/log" |
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"github.com/ovh/go-ovh/ovh" |
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"github.com/prometheus/common/config" |
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"github.com/prometheus/common/model" |
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"github.com/prometheus/prometheus/discovery" |
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"github.com/prometheus/prometheus/discovery/refresh" |
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"github.com/prometheus/prometheus/discovery/targetgroup" |
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) |
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// metaLabelPrefix is the meta prefix used for all meta labels in this discovery. |
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const metaLabelPrefix = model.MetaLabelPrefix + "ovhcloud_" |
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type refresher interface { |
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refresh(context.Context) ([]*targetgroup.Group, error) |
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} |
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var DefaultSDConfig = SDConfig{ |
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Endpoint: "ovh-eu", |
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RefreshInterval: model.Duration(60 * time.Second), |
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} |
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// SDConfig defines the Service Discovery struct used for configuration. |
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type SDConfig struct { |
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Endpoint string `yaml:"endpoint"` |
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ApplicationKey string `yaml:"application_key"` |
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ApplicationSecret config.Secret `yaml:"application_secret"` |
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ConsumerKey config.Secret `yaml:"consumer_key"` |
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RefreshInterval model.Duration `yaml:"refresh_interval"` |
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Service string `yaml:"service"` |
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} |
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// Name implements the Discoverer interface. |
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func (c SDConfig) Name() string { |
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return "ovhcloud" |
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} |
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// UnmarshalYAML implements the yaml.Unmarshaler interface. |
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func (c *SDConfig) UnmarshalYAML(unmarshal func(interface{}) error) error { |
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*c = DefaultSDConfig |
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type plain SDConfig |
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err := unmarshal((*plain)(c)) |
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if err != nil { |
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return err |
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} |
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if c.Endpoint == "" { |
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return errors.New("endpoint can not be empty") |
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} |
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if c.ApplicationKey == "" { |
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return errors.New("application key can not be empty") |
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} |
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if c.ApplicationSecret == "" { |
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return errors.New("application secret can not be empty") |
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} |
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if c.ConsumerKey == "" { |
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return errors.New("consumer key can not be empty") |
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} |
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switch c.Service { |
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case "dedicated_server", "vps": |
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return nil |
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default: |
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return fmt.Errorf("unknown service: %v", c.Service) |
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} |
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} |
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// CreateClient creates a new ovh client configured with given credentials. |
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func createClient(config *SDConfig) (*ovh.Client, error) { |
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return ovh.NewClient(config.Endpoint, config.ApplicationKey, string(config.ApplicationSecret), string(config.ConsumerKey)) |
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} |
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// NewDiscoverer returns a Discoverer for the Config. |
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func (c *SDConfig) NewDiscoverer(options discovery.DiscovererOptions) (discovery.Discoverer, error) { |
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return NewDiscovery(c, options.Logger) |
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} |
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func init() { |
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discovery.RegisterConfig(&SDConfig{}) |
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} |
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// ParseIPList parses ip list as they can have different formats. |
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func parseIPList(ipList []string) ([]netip.Addr, error) { |
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var ipAddresses []netip.Addr |
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for _, ip := range ipList { |
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ipAddr, err := netip.ParseAddr(ip) |
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if err != nil { |
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ipPrefix, err := netip.ParsePrefix(ip) |
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if err != nil { |
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return nil, errors.New("could not parse IP addresses from list") |
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} |
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if ipPrefix.IsValid() { |
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netmask := ipPrefix.Bits() |
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if netmask != 32 { |
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continue |
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} |
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ipAddr = ipPrefix.Addr() |
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} |
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} |
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if ipAddr.IsValid() && !ipAddr.IsUnspecified() { |
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ipAddresses = append(ipAddresses, ipAddr) |
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} |
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} |
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if len(ipAddresses) == 0 { |
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return nil, errors.New("could not parse IP addresses from list") |
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} |
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return ipAddresses, nil |
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} |
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func newRefresher(conf *SDConfig, logger log.Logger) (refresher, error) { |
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switch conf.Service { |
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case "vps": |
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return newVpsDiscovery(conf, logger), nil |
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case "dedicated_server": |
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return newDedicatedServerDiscovery(conf, logger), nil |
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} |
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return nil, fmt.Errorf("unknown OVHcloud discovery service '%s'", conf.Service) |
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} |
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// NewDiscovery returns a new OVHcloud Discoverer which periodically refreshes its targets. |
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func NewDiscovery(conf *SDConfig, logger log.Logger) (*refresh.Discovery, error) { |
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r, err := newRefresher(conf, logger) |
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if err != nil { |
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return nil, err |
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} |
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return refresh.NewDiscovery( |
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logger, |
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"ovhcloud", |
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time.Duration(conf.RefreshInterval), |
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r.refresh, |
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), nil |
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}
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