github.com/wata727/tflint@v0.12.2-0.20191013070026-96dd0d36f385/rules/awsrules/aws_db_instance_default_parameter_group.go (about) 1 package awsrules 2 3 import ( 4 "fmt" 5 "log" 6 "regexp" 7 8 hcl "github.com/hashicorp/hcl/v2" 9 "github.com/wata727/tflint/tflint" 10 ) 11 12 // AwsDBInstanceDefaultParameterGroupRule checks whether the db instance use default parameter group 13 type AwsDBInstanceDefaultParameterGroupRule struct { 14 resourceType string 15 attributeName string 16 } 17 18 // NewAwsDBInstanceDefaultParameterGroupRule returns new rule with default attributes 19 func NewAwsDBInstanceDefaultParameterGroupRule() *AwsDBInstanceDefaultParameterGroupRule { 20 return &AwsDBInstanceDefaultParameterGroupRule{ 21 resourceType: "aws_db_instance", 22 attributeName: "parameter_group_name", 23 } 24 } 25 26 // Name returns the rule name 27 func (r *AwsDBInstanceDefaultParameterGroupRule) Name() string { 28 return "aws_db_instance_default_parameter_group" 29 } 30 31 // Enabled returns whether the rule is enabled by default 32 func (r *AwsDBInstanceDefaultParameterGroupRule) Enabled() bool { 33 return true 34 } 35 36 // Severity returns the rule severity 37 func (r *AwsDBInstanceDefaultParameterGroupRule) Severity() string { 38 return tflint.NOTICE 39 } 40 41 // Link returns the rule reference link 42 func (r *AwsDBInstanceDefaultParameterGroupRule) Link() string { 43 return tflint.ReferenceLink(r.Name()) 44 } 45 46 var defaultDBParameterGroupRegexp = regexp.MustCompile("^default") 47 48 // Check checks the parameter group name starts with `default` 49 func (r *AwsDBInstanceDefaultParameterGroupRule) Check(runner *tflint.Runner) error { 50 log.Printf("[TRACE] Check `%s` rule for `%s` runner", r.Name(), runner.TFConfigPath()) 51 52 return runner.WalkResourceAttributes(r.resourceType, r.attributeName, func(attribute *hcl.Attribute) error { 53 var name string 54 err := runner.EvaluateExpr(attribute.Expr, &name) 55 56 return runner.EnsureNoError(err, func() error { 57 if defaultDBParameterGroupRegexp.Match([]byte(name)) { 58 runner.EmitIssue( 59 r, 60 fmt.Sprintf("\"%s\" is default parameter group. You cannot edit it.", name), 61 attribute.Expr.Range(), 62 ) 63 } 64 return nil 65 }) 66 }) 67 }