provisioner/local-exec: First pass

builtin/bins/provisioner-local-exec/main.go

@@ -0,0 +1,10 @@
+package main
+
+import (
+	"github.com/hashicorp/terraform/builtin/provisioners/local-exec"
+	"github.com/hashicorp/terraform/plugin"
+)
+
+func main() {
+	plugin.Serve(new(localexec.ResourceProvisioner))
+}

builtin/bins/provisioner-local-exec/main_test.go

@@ -0,0 +1 @@
+package main

builtin/provisioners/local-exec/resource_provisioner.go

@@ -0,0 +1,65 @@
+package localexec
+
+import (
+	"fmt"
+	"os/exec"
+	"runtime"
+
+	"github.com/armon/circbuf"
+	"github.com/hashicorp/terraform/helper/config"
+	"github.com/hashicorp/terraform/terraform"
+)
+
+const (
+	// maxBufSize limits how much output we collect from a local
+	// invocation. This is to prevent TF memory usage from growing
+	// to an enormous amount due to a faulty process.
+	maxBufSize = 8 * 1024
+)
+
+type ResourceProvisioner struct{}
+
+func (p *ResourceProvisioner) Apply(
+	s *terraform.ResourceState,
+	c *terraform.ResourceConfig) (*terraform.ResourceState, error) {
+
+	// Get the command
+	commandRaw, ok := c.Get("command")
+	if !ok {
+		return s, fmt.Errorf("local-exec provisioner missing 'command'")
+	}
+	command, ok := commandRaw.(string)
+	if !ok {
+		return s, fmt.Errorf("local-exec provisioner command must be a string")
+	}
+
+	// Execute the command using a shell
+	var shell, flag string
+	if runtime.GOOS == "windows" {
+		shell = "cmd"
+		flag = "/C"
+	} else {
+		shell = "/bin/sh"
+		flag = "-c"
+	}
+
+	// Setup the command
+	cmd := exec.Command(shell, flag, command)
+	output, _ := circbuf.NewBuffer(maxBufSize)
+	cmd.Stderr = output
+	cmd.Stdout = output
+
+	// Run the command to completion
+	if err := cmd.Run(); err != nil {
+		return s, fmt.Errorf("Error running command '%s': %v. Output: %s",
+			command, err, output.Bytes())
+	}
+	return s, nil
+}
+
+func (p *ResourceProvisioner) Validate(c *terraform.ResourceConfig) ([]string, []error) {
+	validator := config.Validator{
+		Required: []string{"command"},
+	}
+	return validator.Validate(c)
+}

builtin/provisioners/local-exec/resource_provisioner_test.go

@@ -0,0 +1,11 @@
+package localexec
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform/terraform"
+)
+
+func TestResourceProvisioner_impl(t *testing.T) {
+	var _ terraform.ResourceProvisioner = new(ResourceProvisioner)
+}