[[sec:types_of_plugins]]
== Types of plugins

Plugins can be implemented as *binary plugins*, *precompiled script plugins*, or *script plugins*:

Binary Plugins :: Binary plugins are compiled plugins typically written in Java or Kotlin DSL that are packaged as JAR files.
They are applied to a project using the `plugins {}` block.

	deny.Register(plugins) // DEPRECATED as no real meaning
	eventratelimit.Register(plugins)
	extendedresourcetoleration.Register(plugins)
	gc.Register(plugins)
	imagepolicy.Register(plugins)
	limitranger.Register(plugins)
	autoprovision.Register(plugins)
	exists.Register(plugins)
	noderestriction.Register(plugins)
	nodetaint.Register(plugins)
	podnodeselector.Register(plugins)

	// initialized later.

	// Each plugin can make use of VolumeConfig.  The single arg to this func contains *all* enumerated
	// options meant to configure volume plugins.  From that single config, create an instance of volume.VolumeConfig
	// for a specific plugin and pass that instance to the plugin's ProbeVolumePlugins(config) func.

	// HostPath recycling is for testing and development purposes only!

		klog.ErrorS(err, "Error initializing dynamic plugin prober")
		pm.prober = &dummyPluginProber{}
	}

	if pm.plugins == nil {
		pm.plugins = map[string]VolumePlugin{}
	}
	if pm.probedPlugins == nil {
		pm.probedPlugins = map[string]VolumePlugin{}
	}

	allErrs := []error{}
	for _, plugin := range plugins {
		name := plugin.GetPluginName()

		<get dest="${target.dir}">
			<url url="${repo.url}/${plugin.groupId}/${plugin.name.prefix}${plugin.name}/${plugin.version}/${plugin.name.prefix}${plugin.name}-${plugin.zip.version}.zip" />
		</get>
		<unzip dest="${plugins.dir}/${plugin.name}" src="${target.dir}/${plugin.name.prefix}${plugin.name}-${plugin.zip.version}.zip">
			<patternset>
				<include name="**" />
			</patternset>
			<cutdirsmapper dirs="1" />
		</unzip>
	</target>

type PolicyHook = generic.PolicyHook[*Policy, *PolicyBinding, PolicyEvaluator]

type Plugin struct {
	*generic.Plugin[PolicyHook]
}

var _ admission.Interface = &Plugin{}
var _ admission.ValidationInterface = &Plugin{}
var _ initializer.WantsFeatures = &Plugin{}
var _ initializer.WantsExcludedAdmissionResources = &Plugin{}

func NewPlugin(_ io.Reader) *Plugin {

	"k8s.io/kubernetes/pkg/volume/secret"
)

// ProbeVolumePlugins collects all volume plugins into an easy to use list.
func ProbeVolumePlugins(featureGate featuregate.FeatureGate) ([]volume.VolumePlugin, error) {
	allPlugins := []volume.VolumePlugin{}

	// The list of plugins to probe is decided by the kubelet binary, not
	// by dynamic linking or other "magic".  Plugins will be analyzed and
	// initialized later.
	//

// limitations under the License.

// Package plugin defines the plugin implementations that the main pprof driver requires.
package plugin

import (
	"io"
	"net/http"
	"regexp"
	"time"

	"github.com/google/pprof/profile"
)

// Options groups all the optional plugins into pprof.
type Options struct {
	Writer  Writer
	Flagset FlagSet
	Fetch   Fetcher

// NewMounter is part of the volume.VolumePlugin interface.
func (plugin *flexVolumePlugin) NewMounter(spec *volume.Spec, pod *api.Pod, _ volume.VolumeOptions) (volume.Mounter, error) {
	return plugin.newMounterInternal(spec, pod, plugin.host.GetMounter(plugin.GetPluginName()), plugin.runner)
}

// newMounterInternal is the internal mounter routine to build the volume.

  xml.namespace="http://maven.apache.org/PLUGIN/${version}"
  xml.schemaLocation="https://maven.apache.org/xsd/plugin-${version}.xsd">
  <id>plugin</id>
  <name>PluginDescriptor</name>
  <description><![CDATA[
    Maven 4 Plugin descriptor, stored in {@code META-INF/maven/plugin.xml} in a plugin's jar artifact.
    This descriptor is generally using the information contained in the annotations of the plugin api.