64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
package observer
|
|
|
|
import (
|
|
"errors"
|
|
"time"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"gopkg.in/yaml.v3"
|
|
|
|
"github.com/letsencrypt/boulder/config"
|
|
"github.com/letsencrypt/boulder/observer/probers"
|
|
)
|
|
|
|
// MonConf is exported to receive YAML configuration in `ObsConf`.
|
|
type MonConf struct {
|
|
Period config.Duration `yaml:"period"`
|
|
Kind string `yaml:"kind" validate:"required,oneof=DNS HTTP CRL TLS TCP"`
|
|
Settings probers.Settings `yaml:"settings" validate:"min=1,dive"`
|
|
}
|
|
|
|
// validatePeriod ensures the received `Period` field is at least 1µs.
|
|
func (c *MonConf) validatePeriod() error {
|
|
if c.Period.Duration < 1*time.Microsecond {
|
|
return errors.New("period must be at least 1µs")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// unmarshalConfigurer constructs a `Configurer` by marshaling the
|
|
// value of the `Settings` field back to bytes, then passing it to the
|
|
// `UnmarshalSettings` method of the `Configurer` type specified by the
|
|
// `Kind` field.
|
|
func (c MonConf) unmarshalConfigurer() (probers.Configurer, error) {
|
|
configurer, err := probers.GetConfigurer(c.Kind)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
settings, _ := yaml.Marshal(c.Settings)
|
|
configurer, err = configurer.UnmarshalSettings(settings)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return configurer, nil
|
|
}
|
|
|
|
// makeMonitor constructs a `monitor` object from the contents of the
|
|
// bound `MonConf`. If the `MonConf` cannot be validated, an error
|
|
// appropriate for end-user consumption is returned instead.
|
|
func (c MonConf) makeMonitor(collectors map[string]prometheus.Collector) (*monitor, error) {
|
|
err := c.validatePeriod()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
probeConf, err := c.unmarshalConfigurer()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
prober, err := probeConf.MakeProber(collectors)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &monitor{c.Period.Duration, prober}, nil
|
|
}
|