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version_required.go
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version_required.go
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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
}