/
terraform_variable_nullable_false.go
75 lines (65 loc) · 1.76 KB
/
terraform_variable_nullable_false.go
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package rules
import (
"github.com/Azure/tflint-ruleset-basic-ext/project"
"github.com/hashicorp/hcl/v2"
"github.com/terraform-linters/tflint-plugin-sdk/hclext"
"github.com/terraform-linters/tflint-plugin-sdk/tflint"
)
var _ tflint.Rule = &TerraformVariableNullableFalseRule{}
type TerraformVariableNullableFalseRule struct {
tflint.DefaultRule
}
func NewTerraformVariableNullableFalseRule() *TerraformVariableNullableFalseRule {
return &TerraformVariableNullableFalseRule{}
}
func (r *TerraformVariableNullableFalseRule) Name() string {
return "terraform_variable_nullable_false"
}
func (r *TerraformVariableNullableFalseRule) Link() string {
return project.ReferenceLink(r.Name())
}
func (r *TerraformVariableNullableFalseRule) Enabled() bool {
return true
}
func (r *TerraformVariableNullableFalseRule) Severity() tflint.Severity {
return tflint.NOTICE
}
func (r *TerraformVariableNullableFalseRule) Check(runner tflint.Runner) error {
content, err := runner.GetModuleContent(&hclext.BodySchema{
Blocks: []hclext.BlockSchema{
{
Type: "variable",
LabelNames: []string{"name"},
Body: &hclext.BodySchema{
Attributes: []hclext.AttributeSchema{
{
Name: "nullable",
Required: false,
},
},
},
},
},
}, nil)
if err != nil {
return err
}
for _, b := range content.Blocks {
attribute, ok := b.Body.Attributes["nullable"]
if !ok {
continue
}
v, _ := attribute.Expr.Value(&hcl.EvalContext{})
if v.False() {
continue
}
err := runner.EmitIssue(r, r.errorMessage(), attribute.Range)
if err != nil {
return err
}
}
return nil
}
func (r *TerraformVariableNullableFalseRule) errorMessage() string {
return "`nullable` is default to `true` so we don't need to declare it explicitly."
}