Initialize the remote state backends

Signed-off-by: Christian Simon <simon@swine.de>

Author: simonswine

cmd/tarmak/cmd/terraform.go

@@ -4,7 +4,6 @@ package cmd
 import (
 	"os"
 
-	"github.com/hashicorp/go-plugin"
 	"github.com/spf13/cobra"
 
 	"github.com/jetstack/tarmak/pkg/tarmak/utils"
@@ -13,7 +12,6 @@ import (
 
 // ensure plugin clients get closed after subcommand run
 func terraformPassthrough(args []string, f func([]string, <-chan struct{}) int) int {
-	defer plugin.CleanupClients()
 	return f(args, utils.MakeShutdownCh())
 }
 

pkg/terraform/passthrough.go

@@ -7,6 +7,8 @@ import (
 	"log"
 	"os"
 
+	goPlugin "github.com/hashicorp/go-plugin"
+	backendInit "github.com/hashicorp/terraform/backend/init"
 	"github.com/hashicorp/terraform/command"
 	"github.com/hashicorp/terraform/plugin"
 	"github.com/mitchellh/cli"
@@ -28,6 +30,17 @@ var InternalProviders = map[string]plugin.ProviderFunc{
 	"template": providertemplate.Provider,
 }
 
+// Prepare passthrough environment
+func passthroughPrepare() {
+	// initialise backends
+	backendInit.Init(nil)
+}
+
+func passthroughCleanup() {
+	// cleanup clients
+	goPlugin.CleanupClients()
+}
+
 // create new terraform ui
 func newUI(out io.Writer, err io.Writer) cli.Ui {
 
@@ -114,20 +127,26 @@ func InternalPlugin(args []string) int {
 }
 
 func Plan(args []string, stopCh <-chan struct{}) int {
+	passthroughPrepare()
+	defer passthroughCleanup()
 	c := &command.PlanCommand{
 		Meta: newMeta(newUI(os.Stdout, os.Stderr), stopCh),
 	}
 	return c.Run(args)
 }
 
 func Apply(args []string, stopCh <-chan struct{}) int {
+	passthroughPrepare()
+	defer passthroughCleanup()
 	c := &command.ApplyCommand{
 		Meta: newMeta(newUI(os.Stdout, os.Stderr), stopCh),
 	}
 	return c.Run(args)
 }
 
 func Destroy(args []string, stopCh <-chan struct{}) int {
+	passthroughPrepare()
+	defer passthroughCleanup()
 	c := &command.ApplyCommand{
 		Meta:    newMeta(newUI(os.Stdout, os.Stderr), stopCh),
 		Destroy: true,
@@ -136,20 +155,26 @@ func Destroy(args []string, stopCh <-chan struct{}) int {
 }
 
 func Init(args []string, stopCh <-chan struct{}) int {
+	passthroughPrepare()
+	defer passthroughCleanup()
 	c := &command.InitCommand{
 		Meta: newMeta(newUI(os.Stdout, os.Stderr), stopCh),
 	}
 	return c.Run(args)
 }
 
 func Output(args []string, stopCh <-chan struct{}) int {
+	passthroughPrepare()
+	defer passthroughCleanup()
 	c := &command.OutputCommand{
 		Meta: newMeta(newUI(os.Stdout, os.Stderr), stopCh),
 	}
 	return c.Run(args)
 }
 
 func Unlock(args []string, stopCh <-chan struct{}) int {
+	passthroughPrepare()
+	defer passthroughCleanup()
 	c := &command.UnlockCommand{
 		Meta: newMeta(newUI(os.Stdout, os.Stderr), stopCh),
 	}