1 files changed, 69 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/terraform/terraform/version_required.go b/vendor/github.com/hashicorp/terraform/terraform/version_required.go
new file mode 100644
index 00000000..3cbbf560
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/terraform/version_required.go
@@ -0,0 +1,69 @@
+package terraform
+
+import (
+	"fmt"
+
+	"github.com/hashicorp/go-version"
+	"github.com/hashicorp/terraform/config"
+	"github.com/hashicorp/terraform/config/module"
+)
+
+// checkRequiredVersion verifies that any version requirements specified by
+// the configuration are met.
+//
+// This checks the root module as well as any additional version requirements
+// from child modules.
+//
+// This is tested in context_test.go.
+func checkRequiredVersion(m *module.Tree) error {
+	// Check any children
+	for _, c := range m.Children() {
+		if err := checkRequiredVersion(c); err != nil {
+			return err
+		}
+	}
+
+	var tf *config.Terraform
+	if c := m.Config(); c != nil {
+		tf = c.Terraform
+	}
+
+	// If there is no Terraform config or the required version isn't set,
+	// we move on.
+	if tf == nil || tf.RequiredVersion == "" {
+		return nil
+	}
+
+	// Path for errors
+	module := "root"
+	if path := normalizeModulePath(m.Path()); len(path) > 1 {
+		module = modulePrefixStr(path)
+	}
+
+	// Check this version requirement of this module
+	cs, err := version.NewConstraint(tf.RequiredVersion)
+	if err != nil {
+		return fmt.Errorf(
+			"%s: terraform.required_version %q syntax error: %s",
+			module,
+			tf.RequiredVersion, err)
+	}
+
+	if !cs.Check(SemVersion) {
+		return fmt.Errorf(
+			"The currently running version of Terraform doesn't meet the\n"+
+				"version requirements explicitly specified by the configuration.\n"+
+				"Please use the required version or update the configuration.\n"+
+				"Note that version requirements are usually set for a reason, so\n"+
+				"we recommend verifying with whoever set the version requirements\n"+
+				"prior to making any manual changes.\n\n"+
+				"  Module: %s\n"+
+				"  Required version: %s\n"+
+				"  Current version: %s",
+			module,
+			tf.RequiredVersion,
+			SemVersion)
+	}
+
+	return nil
+}