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Merge pull request #24723 from smarterclayton/strip_noop_imports

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Protobuf generation should strip side-effect imports
This commit is contained in:
Wojciech Tyczynski 2016-05-04 11:16:45 +02:00
commit 303742ce12
12 changed files with 40 additions and 27 deletions
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37
cmd/libs/go2idl/go-to-protobuf/protobuf/parser.go
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@ -81,9 +81,13 @@ func RewriteGeneratedGogoProtobufFile(name string, extractFn ExtractFunc, header
// remove types that are already declared
decls := []ast.Decl{}
for _, d := range file.Decls {
if !dropExistingTypeDeclarations(d, extractFn) {
decls = append(decls, d)
if dropExistingTypeDeclarations(d, extractFn) {
continue
}
if dropEmptyImportDeclarations(d) {
continue
}
decls = append(decls, d)
}
file.Decls = decls
@ -93,6 +97,8 @@ func RewriteGeneratedGogoProtobufFile(name string, extractFn ExtractFunc, header
})
}
// dropExistingTypeDeclarations removes any type declaration for which extractFn returns true. The function
// returns true if the entire declaration should be dropped.
func dropExistingTypeDeclarations(decl ast.Decl, extractFn ExtractFunc) bool {
switch t := decl.(type) {
case *ast.GenDecl:
@ -117,6 +123,33 @@ func dropExistingTypeDeclarations(decl ast.Decl, extractFn ExtractFunc) bool {
return false
}
// dropEmptyImportDeclarations strips any generated but no-op imports from the generated code
// to prevent generation from being able to define side-effects. The function returns true
// if the entire declaration should be dropped.
func dropEmptyImportDeclarations(decl ast.Decl) bool {
switch t := decl.(type) {
case *ast.GenDecl:
if t.Tok != token.IMPORT {
return false
}
specs := []ast.Spec{}
for _, s := range t.Specs {
switch spec := s.(type) {
case *ast.ImportSpec:
if spec.Name != nil && spec.Name.Name == "_" {
continue
}
specs = append(specs, spec)
}
}
if len(specs) == 0 {
return true
}
t.Specs = specs
}
return false
}
func RewriteTypesWithProtobufStructTags(name string, structTags map[string]map[string]string) error {
return rewriteFile(name, []byte{}, func(fset *token.FileSet, file *ast.File) error {
allErrs := []error{}

3
federation/apis/federation/v1alpha1/generated.pb.go
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@ -37,11 +37,10 @@ package v1alpha1
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import k8s_io_kubernetes_pkg_api_resource "k8s.io/kubernetes/pkg/api/resource"
import k8s_io_kubernetes_pkg_api_unversioned "k8s.io/kubernetes/pkg/api/unversioned"
import k8s_io_kubernetes_pkg_api_v1 "k8s.io/kubernetes/pkg/api/v1"
import _ "k8s.io/kubernetes/pkg/util/intstr"
import io "io"

2
pkg/api/resource/generated.pb.go
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@ -33,8 +33,6 @@ package resource
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import _ "k8s.io/kubernetes/pkg/util/intstr"
import io "io"

2
pkg/api/unversioned/generated.pb.go
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@ -55,8 +55,6 @@ package unversioned
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import _ "k8s.io/kubernetes/pkg/util/intstr"
import time "time"

2
pkg/api/v1/generated.pb.go
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@ -170,7 +170,7 @@ package v1
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import k8s_io_kubernetes_pkg_api_resource "k8s.io/kubernetes/pkg/api/resource"
import k8s_io_kubernetes_pkg_api_unversioned "k8s.io/kubernetes/pkg/api/unversioned"
import k8s_io_kubernetes_pkg_runtime "k8s.io/kubernetes/pkg/runtime"

4
pkg/apis/apps/v1alpha1/generated.pb.go
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@ -35,11 +35,9 @@ package v1alpha1
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import _ "k8s.io/kubernetes/pkg/api/resource"
import k8s_io_kubernetes_pkg_api_unversioned "k8s.io/kubernetes/pkg/api/unversioned"
import k8s_io_kubernetes_pkg_api_v1 "k8s.io/kubernetes/pkg/api/v1"
import _ "k8s.io/kubernetes/pkg/util/intstr"
import io "io"

5
pkg/apis/autoscaling/v1/generated.pb.go
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@ -39,11 +39,8 @@ package v1
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import _ "k8s.io/kubernetes/pkg/api/resource"
import k8s_io_kubernetes_pkg_api_unversioned "k8s.io/kubernetes/pkg/api/unversioned"
import _ "k8s.io/kubernetes/pkg/util/intstr"
import k8s_io_kubernetes_pkg_api_unversioned "k8s.io/kubernetes/pkg/api/unversioned"
import io "io"

4
pkg/apis/batch/v1/generated.pb.go
View File

@ -38,11 +38,9 @@ package v1
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import _ "k8s.io/kubernetes/pkg/api/resource"
import k8s_io_kubernetes_pkg_api_unversioned "k8s.io/kubernetes/pkg/api/unversioned"
import k8s_io_kubernetes_pkg_api_v1 "k8s.io/kubernetes/pkg/api/v1"
import _ "k8s.io/kubernetes/pkg/util/intstr"
import io "io"

1
pkg/apis/extensions/v1beta1/generated.pb.go
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@ -92,7 +92,6 @@ package v1beta1
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import k8s_io_kubernetes_pkg_api_unversioned "k8s.io/kubernetes/pkg/api/unversioned"
import k8s_io_kubernetes_pkg_api_v1 "k8s.io/kubernetes/pkg/api/v1"

3
pkg/runtime/generated.pb.go
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@ -34,9 +34,6 @@ package runtime
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import _ "k8s.io/kubernetes/pkg/api/resource"
import _ "k8s.io/kubernetes/pkg/util/intstr"
import io "io"

1
pkg/util/intstr/generated.pb.go
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@ -32,7 +32,6 @@ package intstr
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import io "io"

3
pkg/watch/versioned/generated.pb.go
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@ -32,9 +32,6 @@ package versioned
import proto "github.com/gogo/protobuf/proto"
import fmt "fmt"
import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import _ "k8s.io/kubernetes/pkg/util/intstr"
import io "io"