monitor

type Duration struct {
	time.Duration
}

type Entry struct {
	// Spec contains the site's specification. See SiteSpec
	Spec SiteSpec `json:"spec"`
	// State contains the site's state. See SiteState
	State *SiteState `json:"state,omitempty"`
}

type Monitor struct {
	// The Register channel is used to add a host to the monitor
	Register chan SiteSpec
	// The Unregister channel is used to remove a host from the monitor
	Unregister chan SiteSpec
	// HTTPClient is the http.Client that will be used to check sites.
	// Under normal circumstances, this can be left blank and Monitor will create the required client.
	HTTPClient *http.Client
	// MaxConcurrentChecks limits the number of sites that are checked in parallel. Default: DefaultMaxConcurrentChecks
	MaxConcurrentChecks int64
	// contains filtered or unexported fields
}

type SiteSpec struct {
	// URL of the site
	URL string `json:"url"`
	// Name of the site
	Name string `json:"name,omitempty"`
}

type SiteState struct {
	// Up indicates if the site is up or down
	Up bool `json:"up"`
	// LastError is the last error received when checking the site
	LastError string `json:"last_error,omitempty"`
	// HTTPCode is the last HTTP Code received when checking the site
	HTTPCode int `json:"http_code,omitempty"`
	// CertificateAge contains the number of days that the site's TLS certificate is still valid
	// IsTLS indicates the site is using encryption (i.e. TLS)
	IsTLS bool `json:"is_tls"`
	// For HTTP sites, this will be zero.
	CertificateAge float64 `json:"certificate_age,omitempty"`
	// Latency contains the time it took to check the site
	Latency Duration `json:"latency,omitempty"`
	// LastCheck is the timestamp the site was last checked. Before there first check, this is zero
	LastCheck time.Time `json:"last_check,omitempty"`
}