Add alwaystrue guest plugin

builtin/otherplugin/guest/alwaystrue.go

@@ -0,0 +1,70 @@
+package guest
+
+import (
+	"errors"
+
+	"github.com/hashicorp/vagrant-plugin-sdk/component"
+	plugincore "github.com/hashicorp/vagrant-plugin-sdk/core"
+	"github.com/hashicorp/vagrant/builtin/otherplugin/guest/cap"
+)
+
+type GuestConfig struct {
+}
+
+// AlwaysTrueGuest is a Guest implementation for myplugin.
+type AlwaysTrueGuest struct {
+	config GuestConfig
+}
+
+// DetectFunc implements component.Guest
+func (h *AlwaysTrueGuest) DetectFunc() interface{} {
+	return h.Detect
+}
+
+func (h *AlwaysTrueGuest) Detect(t plugincore.Target) bool {
+	m, err := t.Specialize((*plugincore.Machine)(nil))
+	if err != nil {
+		return false
+	}
+	machine := m.(plugincore.Machine)
+	machine.ConnectionInfo()
+	// TODO: need a communicator to connect to guest
+	return true
+}
+
+// ParentsFunc implements component.Guest
+func (h *AlwaysTrueGuest) ParentsFunc() interface{} {
+	return h.Parents
+}
+
+func (h *AlwaysTrueGuest) Parents() []string {
+	return []string{"force", "guest", "platform", "match"} // We just need to have this be the most of all matches
+}
+
+// HasCapabilityFunc implements component.Guest
+func (h *AlwaysTrueGuest) HasCapabilityFunc() interface{} {
+	return h.CheckCapability
+}
+
+func (h *AlwaysTrueGuest) CheckCapability(n *component.NamedCapability) bool {
+	if n.Capability == "hello" {
+		return true
+	}
+	return false
+}
+
+// CapabilityFunc implements component.Guest
+func (h *AlwaysTrueGuest) CapabilityFunc(name string) interface{} {
+	if name == "hello" {
+		return h.WriteHelloCap
+	}
+	return errors.New("invalid capability requested")
+}
+
+func (h *AlwaysTrueGuest) WriteHelloCap(m plugincore.Machine) error {
+	return cap.WriteHello(m)
+}
+
+var (
+	_ component.Guest = (*AlwaysTrueGuest)(nil)
+)

builtin/otherplugin/guest/cap/write_hello.go

@@ -0,0 +1,17 @@
+package cap
+
+import (
+	"io/ioutil"
+
+	plugincore "github.com/hashicorp/vagrant-plugin-sdk/core"
+)
+
+func WriteHello(machine plugincore.Machine) (err error) {
+	d1 := []byte("hello\ngo\n")
+	ioutil.WriteFile("/tmp/dat1", d1, 0644)
+
+	machine.ConnectionInfo()
+	// TODO: write something to guest machine
+	// need a communicator
+	return
+}

builtin/otherplugin/main.go

@@ -2,11 +2,13 @@ package otherplugin
 
 import (
 	sdk "github.com/hashicorp/vagrant-plugin-sdk"
+	"github.com/hashicorp/vagrant/builtin/otherplugin/guest"
 )
 
 var CommandOptions = []sdk.Option{
 	sdk.WithComponents(
 		&Command{},
+		&guest.AlwaysTrueGuest{},
 	),
 	sdk.WithName("otherplugin"),
 }