moby--moby/daemon/metrics_unsupported.go

// +build windows

package daemon

import "github.com/docker/docker/pkg/plugingetter"

func registerMetricsPluginCallback(getter plugingetter.PluginGetter, sockPath string) {
}

func (daemon *Daemon) listenMetricsSock() (string, error) {
	return "", nil
}
Add support for metrics plugins Allows for a plugin type that can be used to scrape metrics. This is useful because metrics are not neccessarily at a standard location... `--metrics-addr` must be set, and must currently be a TCP socket. Even if metrics are done via a unix socket, there's no guarentee where the socket may be located on the system, making bind-mounting such a socket into a container difficult (and racey, failure-prone on daemon restart). Metrics plugins side-step this issue by always listening on a unix socket and then bind-mounting that into a known path in the plugin container. Note there has been similar work in the past (and ultimately punted at the time) for consistent access to the Docker API from within a container. Why not add metrics to the Docker API and just provide a plugin with access to the Docker API? Certainly this can be useful, but gives a lot of control/access to a plugin that may only need the metrics. We can look at supporting API plugins separately for this reason. Signed-off-by: Brian Goff <cpuguy83@gmail.com> 2017-04-13 21:56:50 -04:00			`// +build windows`

			`package daemon`

			`import "github.com/docker/docker/pkg/plugingetter"`

			`func registerMetricsPluginCallback(getter plugingetter.PluginGetter, sockPath string) {`
			`}`

			`func (daemon *Daemon) listenMetricsSock() (string, error) {`
			`return "", nil`
			`}`