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plugin: gRPC-based new plugin system
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| proto: | ||
| cd plugin/proto; \ | ||
| protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative tflint.proto |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| package hclext | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "github.com/hashicorp/hcl/v2" | ||
| "github.com/hashicorp/hcl/v2/hclsyntax" | ||
| "github.com/hashicorp/hcl/v2/json" | ||
| ) | ||
|
|
||
| // ParseExpression is a wrapper that calls ParseExpression of hclsyntax and json based on the file extension. | ||
| // This function specializes in parsing intermediate expressions in the file, | ||
| // so it takes into account the hack on trailing newlines in heredoc. | ||
| func ParseExpression(src []byte, filename string, start hcl.Pos) (hcl.Expression, hcl.Diagnostics) { | ||
| if strings.HasSuffix(filename, ".tf") { | ||
| // HACK: Always add a newline to avoid heredoc parse errors. | ||
| // @see https://github.com/hashicorp/hcl/issues/441 | ||
| src = []byte(string(src) + "\n") | ||
| return hclsyntax.ParseExpression(src, filename, start) | ||
| } | ||
|
|
||
| if strings.HasSuffix(filename, ".tf.json") { | ||
| return json.ParseExpressionWithStartPos(src, filename, start) | ||
| } | ||
|
|
||
| panic(fmt.Sprintf("Unexpected file: %s", filename)) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,243 @@ | ||
| package fromproto | ||
|
|
||
| import ( | ||
| "errors" | ||
|
|
||
| "github.com/hashicorp/hcl/v2" | ||
| "github.com/terraform-linters/tflint-plugin-sdk/hclext" | ||
| "github.com/terraform-linters/tflint-plugin-sdk/plugin/proto" | ||
| "github.com/terraform-linters/tflint-plugin-sdk/schema" | ||
| "github.com/terraform-linters/tflint-plugin-sdk/tflint" | ||
| "google.golang.org/grpc/codes" | ||
| "google.golang.org/grpc/status" | ||
| ) | ||
|
|
||
| // BodySchema converts proto.BodySchema to schema.BodySchema | ||
| func BodySchema(body *proto.BodySchema) *schema.BodySchema { | ||
| if body == nil { | ||
| return nil | ||
| } | ||
|
|
||
| attributes := make([]schema.AttributeSchema, len(body.Attributes)) | ||
| for idx, attr := range body.Attributes { | ||
| attributes[idx] = schema.AttributeSchema{Name: attr.Name} | ||
| } | ||
|
|
||
| blocks := make([]schema.BlockSchema, len(body.Blocks)) | ||
| for idx, block := range body.Blocks { | ||
| blocks[idx] = schema.BlockSchema{ | ||
| Type: block.Type, | ||
| LabelNames: block.LabelNames, | ||
| Body: BodySchema(block.Body), | ||
| } | ||
| } | ||
|
|
||
| return &schema.BodySchema{ | ||
| Attributes: attributes, | ||
| Blocks: blocks, | ||
| } | ||
| } | ||
|
|
||
| // BodyContent converts proto.BodyContent to schema.BodyContent | ||
| func BodyContent(body *proto.BodyContent) (*schema.BodyContent, hcl.Diagnostics) { | ||
| if body == nil { | ||
| return nil, nil | ||
| } | ||
| diags := hcl.Diagnostics{} | ||
|
|
||
| attributes := schema.Attributes{} | ||
| for key, attr := range body.Attributes { | ||
| expr, exprDiags := hclext.ParseExpression(attr.Expr, attr.ExprRange.Filename, Pos(attr.ExprRange.Start)) | ||
| diags = diags.Extend(exprDiags) | ||
|
|
||
| attributes[key] = &schema.Attribute{ | ||
| Name: attr.Name, | ||
| Expr: expr, | ||
| Range: Range(attr.Range), | ||
| NameRange: Range(attr.NameRange), | ||
| } | ||
| } | ||
|
|
||
| blocks := make(schema.Blocks, len(body.Blocks)) | ||
| for idx, block := range body.Blocks { | ||
| blockBody, contentDiags := BodyContent(block.Body) | ||
| diags = diags.Extend(contentDiags) | ||
|
|
||
| labelRanges := make([]hcl.Range, len(block.LabelRanges)) | ||
| for idx, labelRange := range block.LabelRanges { | ||
| labelRanges[idx] = Range(labelRange) | ||
| } | ||
|
|
||
| blocks[idx] = &schema.Block{ | ||
| Type: block.Type, | ||
| Labels: block.Labels, | ||
| Body: blockBody, | ||
| DefRange: Range(block.DefRange), | ||
| TypeRange: Range(block.TypeRange), | ||
| LabelRanges: labelRanges, | ||
| } | ||
| } | ||
|
|
||
| return &schema.BodyContent{ | ||
| Attributes: attributes, | ||
| Blocks: blocks, | ||
| }, diags | ||
| } | ||
|
|
||
| // RuleObject is an intermediate representation that satisfies the Rule interface. | ||
| type RuleObject struct { | ||
| Data struct { | ||
| Name string | ||
| Enabled bool | ||
| Severity string | ||
| Link string | ||
| } | ||
| } | ||
|
|
||
| // Name returns the rule name | ||
| func (r *RuleObject) Name() string { return r.Data.Name } | ||
|
|
||
| // Enabled returns whether the rule is enabled | ||
| func (r *RuleObject) Enabled() bool { return r.Data.Enabled } | ||
|
|
||
| // Severity returns the severify of the rule | ||
| func (r *RuleObject) Severity() string { return r.Data.Severity } | ||
|
|
||
| // Link returns the link of the rule documentation if exists | ||
| func (r *RuleObject) Link() string { return r.Data.Link } | ||
|
|
||
| // Check does nothing. This is just a method to satisfy the interface | ||
| func (r *RuleObject) Check(tflint.Runner) error { return nil } | ||
|
|
||
| // Rule converts proto.EmitIssue_Rule to RuleObject | ||
| func Rule(rule *proto.EmitIssue_Rule) *RuleObject { | ||
| if rule == nil { | ||
| return nil | ||
| } | ||
|
|
||
| return &RuleObject{ | ||
| Data: struct { | ||
| Name string | ||
| Enabled bool | ||
| Severity string | ||
| Link string | ||
| }{ | ||
| Name: rule.Name, | ||
| Enabled: rule.Enabled, | ||
| Severity: Severity(rule.Severity), | ||
| Link: rule.Link, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| // Severity converts proto.EmitIssue_Severity to severity | ||
| func Severity(severity proto.EmitIssue_Severity) string { | ||
| switch severity { | ||
| case proto.EmitIssue_SEVERITY_ERROR: | ||
| return tflint.ERROR | ||
| case proto.EmitIssue_SEVERITY_WARNING: | ||
| return tflint.WARNING | ||
| case proto.EmitIssue_SEVERITY_NOTICE: | ||
| return tflint.NOTICE | ||
| } | ||
|
|
||
| return tflint.ERROR | ||
| } | ||
|
|
||
| // Range converts proto.Range to hcl.Range | ||
| func Range(rng *proto.Range) hcl.Range { | ||
| if rng == nil { | ||
| return hcl.Range{} | ||
| } | ||
|
|
||
| return hcl.Range{ | ||
| Filename: rng.Filename, | ||
| Start: Pos(rng.Start), | ||
| End: Pos(rng.End), | ||
| } | ||
| } | ||
|
|
||
| // Pos converts proto.Range_Pos to hcl.Pos | ||
| func Pos(pos *proto.Range_Pos) hcl.Pos { | ||
| if pos == nil { | ||
| return hcl.Pos{} | ||
| } | ||
|
|
||
| return hcl.Pos{ | ||
| Line: int(pos.Line), | ||
| Column: int(pos.Column), | ||
| Byte: int(pos.Byte), | ||
| } | ||
| } | ||
|
|
||
| // Error converts gRPC error status to tflint.Error | ||
| func Error(err error) error { | ||
| st, ok := status.FromError(err) | ||
| if !ok { | ||
| return err | ||
| } | ||
|
|
||
| // If the error status has no details, retrieve an error from the gRPC error status. | ||
| // Remove the status code because some statuses are expected and should not be shown to users. | ||
| if len(st.Details()) == 0 { | ||
| switch st.Code() { | ||
| case codes.InvalidArgument: | ||
| fallthrough | ||
| case codes.Aborted: | ||
| return errors.New(st.Message()) | ||
| default: | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| // It is not supposed to have multiple details. The detail have an error code and are converted to tflint.Error | ||
| switch t := st.Details()[0].(type) { | ||
| case *proto.ErrorDetail: | ||
| switch t.Code { | ||
| case proto.ErrorCode_FAILED_TO_EVAL: | ||
| return &tflint.Error{ | ||
| Code: tflint.EvaluationError, | ||
| Level: tflint.ErrorLevel, | ||
| Message: st.Message(), | ||
| } | ||
| case proto.ErrorCode_UNKNOWN_VALUE: | ||
| return &tflint.Error{ | ||
| Code: tflint.UnknownValueError, | ||
| Level: tflint.WarningLevel, | ||
| Message: st.Message(), | ||
| } | ||
| case proto.ErrorCode_NULL_VALUE: | ||
| return &tflint.Error{ | ||
| Code: tflint.NullValueError, | ||
| Level: tflint.WarningLevel, | ||
| Message: st.Message(), | ||
| } | ||
| case proto.ErrorCode_TYPE_CONVERSION: | ||
| return &tflint.Error{ | ||
| Code: tflint.TypeConversionError, | ||
| Level: tflint.ErrorLevel, | ||
| Message: st.Message(), | ||
| } | ||
| case proto.ErrorCode_TYPE_MISMATCH: | ||
| return &tflint.Error{ | ||
| Code: tflint.TypeMismatchError, | ||
| Level: tflint.ErrorLevel, | ||
| Message: st.Message(), | ||
| } | ||
| case proto.ErrorCode_UNEVALUABLE: | ||
| return &tflint.Error{ | ||
| Code: tflint.UnevaluableError, | ||
| Level: tflint.WarningLevel, | ||
| Message: st.Message(), | ||
| } | ||
| case proto.ErrorCode_UNEXPECTED_ATTRIBUTE: | ||
| return &tflint.Error{ | ||
| Code: tflint.UnexpectedAttributeError, | ||
| Level: tflint.ErrorLevel, | ||
| Message: st.Message(), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return err | ||
| } |
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