cmd/cue/cmd: hook up protobuf encodings types
Closes #606
Change-Id: I712ed6f9fc37d53b633a44ed87e4c71c1e018b0f
Reviewed-on: https://cue-review.googlesource.com/c/cue/+/9372
Reviewed-by: CUE cueckoo <cueckoo@gmail.com>
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
diff --git a/cmd/cue/cmd/common.go b/cmd/cue/cmd/common.go
index 39ec623..d6deeec 100644
--- a/cmd/cue/cmd/common.go
+++ b/cmd/cue/cmd/common.go
@@ -296,7 +296,7 @@
if schema := i.b.encConfig.Schema; schema.Exists() {
i.e = schema.Err()
if i.e == nil {
- i.v = i.v.Unify(schema)
+ i.v = i.v.Unify(schema) // TODO(required fields): don't merge in schema
i.e = i.v.Err()
}
i.f = nil
@@ -409,6 +409,19 @@
for _, f := range b.OrphanedFiles {
switch f.Encoding {
case build.Protobuf, build.YAML, build.JSON, build.JSONL, build.Text:
+ if f.Interpretation == build.ProtobufJSON {
+ // Need a schema.
+ values = append(values, &decoderInfo{f, nil})
+ continue
+ }
+ case build.TextProto:
+ if p.importing {
+ return schemas, values, errors.Newf(token.NoPos,
+ "cannot import textproto files")
+ }
+ // Needs to be decoded after any schema.
+ values = append(values, &decoderInfo{f, nil})
+ continue
default:
return schemas, values, errors.Newf(token.NoPos,
"unsupported encoding %q", f.Encoding)
@@ -569,13 +582,17 @@
}
switch {
+ default:
+ fallthrough
+
+ case p.schema != nil:
+ p.orphaned = values
+
case p.mergeData, p.usePlacement(), p.importing:
if err = p.placeOrphans(b, values); err != nil {
return nil, err
}
- default:
- p.orphaned = values
}
if len(b.Files) > 0 {
diff --git a/cmd/cue/cmd/help.go b/cmd/cue/cmd/help.go
index 67ec139..a34742c 100644
--- a/cmd/cue/cmd/help.go
+++ b/cmd/cue/cmd/help.go
@@ -185,9 +185,11 @@
jsonl .jsonl/.ldjson Line-separated JSON values.
jsonschema JSON Schema.
openapi OpenAPI schema.
+ pb Use Protobuf mappings (e.g. json+pb)
+ textproto .textproto Text-based protocol buffers.
proto .proto Protocol Buffer definitions.
- go .go Go source files.
- text .txt Raw text file; the evaluated
+ go .go Go source files.
+ text .txt Raw text file; the evaluated
value must be of type string.
OpenAPI, JSON Schema and Protocol Buffer definitions are
@@ -495,7 +497,6 @@
// - id=<url>
// TODO: filetypes:
-// - textpb
// - binpb
// TODO: cue.mod help topic
diff --git a/cmd/cue/cmd/orphans.go b/cmd/cue/cmd/orphans.go
index e35dbb4..13f7c62 100644
--- a/cmd/cue/cmd/orphans.go
+++ b/cmd/cue/cmd/orphans.go
@@ -27,6 +27,7 @@
"cuelang.org/go/cue/errors"
"cuelang.org/go/cue/parser"
"cuelang.org/go/cue/token"
+ "cuelang.org/go/encoding/protobuf/jsonpb"
"cuelang.org/go/internal"
"cuelang.org/go/internal/astinternal"
"cuelang.org/go/internal/encoding"
@@ -172,6 +173,7 @@
expr := internal.ToExpr(file)
p, _, _ := internal.PackageInfo(file)
+ var path cue.Path
var labels []ast.Label
switch {
@@ -227,6 +229,22 @@
a = append(a, cue.Label(label))
labels = append(labels, label)
}
+
+ path = cue.MakePath(a...)
+ }
+
+ switch d.Interpretation() {
+ case build.ProtobufJSON:
+ v := b.instance.Value().LookupPath(path)
+ if b.useList {
+ v, _ = v.Elem()
+ }
+ if !v.Exists() {
+ break
+ }
+ if err := jsonpb.NewDecoder(v).RewriteFile(file); err != nil {
+ return nil, err
+ }
}
if b.useList {
diff --git a/cmd/cue/cmd/testdata/script/cmd_jsonpb.txt b/cmd/cue/cmd/testdata/script/cmd_jsonpb.txt
new file mode 100644
index 0000000..ec041bb
--- /dev/null
+++ b/cmd/cue/cmd/testdata/script/cmd_jsonpb.txt
@@ -0,0 +1,81 @@
+cue eval schema.cue json+pb: data.json
+cmp stdout out/data1
+
+cue eval schemaflag.cue -d '#X' json+pb: data.json
+cmp stdout out/data1
+
+! cue eval schema.cue json+pb: data-err.json
+cmp stderr out/data-err
+
+cue eval .:nested yaml+pb: stream.yaml -l kind
+cmp stdout out/stream
+
+-- schema.cue --
+a: int @protobuf(1,int64) // to string
+b: int @protobuf(2,int32) // also allow string
+c: int // also allow
+d: float
+s: string
+t: bytes
+
+-- nested.cue --
+package nested
+
+A: {
+ a: int @protobuf(1,int64) // to string
+ b: bytes
+}
+
+B: {
+ a: int @protobuf(1,int64) // to string
+ s: string
+}
+
+-- schemaflag.cue --
+#X: {
+ a: int @protobuf(1,int64) // to string
+ b: int @protobuf(2,int32) // also allow string
+ c: int // also allow
+ d: float
+ s: string
+ t: bytes
+}
+
+-- data.json --
+{"a": "10", "b": "20", "c": 30, "d": "1.2",
+"s":"SGVsbG8sIOS4lueVjA==",
+"t": "SGVsbG8sIOS4lueVjA=="}
+
+-- data-err.json --
+{"a": "10", "b": "20", "c": "30", "t": "SGVsbG8sIOS4lue???VjA==" }
+
+-- stream.yaml --
+kind: "A"
+a: "10"
+b: "SGVsbG8sIOS4lueVjA=="
+---
+kind: "B"
+a: "10"
+s: "SGVsbG8sIOS4lueVjA=="
+
+-- out/data1 --
+a: 10
+b: 20
+c: 30
+d: 1.2
+s: "SGVsbG8sIOS4lueVjA=="
+t: 'Hello, 世界'
+-- out/stream --
+A: {
+ kind: "A"
+ a: 10
+ b: 'Hello, 世界'
+}
+B: {
+ kind: "B"
+ a: 10
+ s: "SGVsbG8sIOS4lueVjA=="
+}
+-- out/data-err --
+t: failed to decode base64: illegal base64 data at input byte 15:
+ ./data-err.json:1:40
diff --git a/cmd/cue/cmd/testdata/script/cmd_textproto.txt b/cmd/cue/cmd/testdata/script/cmd_textproto.txt
new file mode 100644
index 0000000..e1549b1
--- /dev/null
+++ b/cmd/cue/cmd/testdata/script/cmd_textproto.txt
@@ -0,0 +1,37 @@
+cue eval topschema.cue foo.textproto
+cmp stdout out/topfoo.textproto
+
+cue eval -d '#X' schema.cue foo.textproto
+cmp stdout out/foo.textproto
+
+! cue eval -d '#X' schema.cue foo.textproto -l c
+cmp stderr out/stderr3
+
+-- topschema.cue --
+a: int
+b: [...int]
+c: string
+-- schema.cue --
+#X: {
+ a: int
+ b: [...int]
+ c: string
+}
+-- foo.textproto --
+a: 4
+b: 1
+b: 2
+b: 3
+b: 4
+b: 5
+c: "foo"
+-- out/topfoo.textproto --
+a: 4
+b: [1, 2, 3, 4, 5]
+c: "foo"
+-- out/foo.textproto --
+a: 4
+b: [1, 2, 3, 4, 5]
+c: "foo"
+-- out/stderr3 --
+cannot combine --schema flag with flag "path", "list", or "files"
diff --git a/cue/build/file.go b/cue/build/file.go
index 2aef149..ecfdfb0 100644
--- a/cue/build/file.go
+++ b/cue/build/file.go
@@ -30,17 +30,17 @@
type Encoding string
const (
- CUE Encoding = "cue"
- JSON Encoding = "json"
- YAML Encoding = "yaml"
- JSONL Encoding = "jsonl"
- Text Encoding = "text"
- Protobuf Encoding = "proto"
+ CUE Encoding = "cue"
+ JSON Encoding = "json"
+ YAML Encoding = "yaml"
+ JSONL Encoding = "jsonl"
+ Text Encoding = "text"
+ Protobuf Encoding = "proto"
+ TextProto Encoding = "textproto"
+ BinaryProto Encoding = "pb"
// TODO:
// TOML
- // TextProto
- // BinProto
Code Encoding = "code" // Programming languages
)
@@ -62,9 +62,10 @@
// the info.title and info.version fields.
//
// In all other cases, the underlying data is interpreted as is.
- Auto Interpretation = "auto"
- JSONSchema Interpretation = "jsonschema"
- OpenAPI Interpretation = "openapi"
+ Auto Interpretation = "auto"
+ JSONSchema Interpretation = "jsonschema"
+ OpenAPI Interpretation = "openapi"
+ ProtobufJSON Interpretation = "pb"
)
// A Form specifies the form in which a program should be represented.
diff --git a/internal/encoding/encoder.go b/internal/encoding/encoder.go
index 40db53f..dacf6e7 100644
--- a/internal/encoding/encoder.go
+++ b/internal/encoding/encoder.go
@@ -30,6 +30,8 @@
"cuelang.org/go/cue/format"
"cuelang.org/go/cue/token"
"cuelang.org/go/encoding/openapi"
+ "cuelang.org/go/encoding/protobuf/jsonpb"
+ "cuelang.org/go/encoding/protobuf/textproto"
"cuelang.org/go/internal"
"cuelang.org/go/internal/filetypes"
"cuelang.org/go/pkg/encoding/yaml"
@@ -87,6 +89,12 @@
}
return openapi.Generate(i, cfg)
}
+ case build.ProtobufJSON:
+ e.interpret = func(v cue.Value) (*ast.File, error) {
+ f := valueToFile(v)
+ return f, jsonpb.NewEncoder(v).RewriteFile(f)
+ }
+
// case build.JSONSchema:
// // TODO: get encoding options
// cfg := openapi.Config{}
@@ -182,6 +190,20 @@
return err
}
+ case build.TextProto:
+ // TODO: verify that the schema is given. Otherwise err out.
+ e.concrete = true
+ e.encValue = func(v cue.Value) error {
+ v = v.Unify(cfg.Schema)
+ b, err := textproto.NewEncoder().Encode(v)
+ if err != nil {
+ return err
+ }
+
+ _, err = w.Write(b)
+ return err
+ }
+
case build.Text:
e.concrete = true
e.encValue = func(v cue.Value) error {
diff --git a/internal/encoding/encoding.go b/internal/encoding/encoding.go
index 67ad181..fada360 100644
--- a/internal/encoding/encoding.go
+++ b/internal/encoding/encoding.go
@@ -37,6 +37,8 @@
"cuelang.org/go/encoding/jsonschema"
"cuelang.org/go/encoding/openapi"
"cuelang.org/go/encoding/protobuf"
+ "cuelang.org/go/encoding/protobuf/jsonpb"
+ "cuelang.org/go/encoding/protobuf/textproto"
"cuelang.org/go/internal"
"cuelang.org/go/internal/filetypes"
"cuelang.org/go/internal/third_party/yaml"
@@ -48,6 +50,7 @@
cfg *Config
closer io.Closer
next func() (ast.Expr, error)
+ rewriteFunc rewriteFunc
interpretFunc interpretFunc
interpretation build.Interpretation
expr ast.Expr
@@ -59,6 +62,7 @@
}
type interpretFunc func(*cue.Instance) (file *ast.File, id string, err error)
+type rewriteFunc func(*ast.File) (file *ast.File, err error)
// ID returns a canonical identifier for the decoded object or "" if no such
// identifier could be found.
@@ -89,7 +93,15 @@
}
func (i *Decoder) doInterpret() {
- // Interpretations
+ if i.rewriteFunc != nil {
+ i.file = i.File()
+ var err error
+ i.file, err = i.rewriteFunc(i.file)
+ if err != nil {
+ i.err = err
+ return
+ }
+ }
if i.interpretFunc != nil {
var r cue.Runtime
i.file = i.File()
@@ -208,6 +220,9 @@
case build.JSONSchema:
i.interpretation = build.JSONSchema
i.interpretFunc = jsonSchemaFunc(cfg, f)
+ case build.ProtobufJSON:
+ i.interpretation = build.ProtobufJSON
+ i.rewriteFunc = protobufJSONFunc(cfg, f)
default:
i.err = fmt.Errorf("unsupported interpretation %q", f.Interpretation)
}
@@ -242,6 +257,13 @@
PkgName: cfg.PkgName,
}
i.file, i.err = protobuf.Extract(path, r, paths)
+ case build.TextProto:
+ b, err := ioutil.ReadAll(r)
+ i.err = err
+ if err == nil {
+ d := textproto.NewDecoder()
+ i.expr, i.err = d.Parse(cfg.Schema, path, b)
+ }
default:
i.err = fmt.Errorf("unsupported encoding %q", f.Encoding)
}
@@ -286,6 +308,16 @@
}
}
+func protobufJSONFunc(cfg *Config, file *build.File) rewriteFunc {
+ return func(f *ast.File) (*ast.File, error) {
+ if !cfg.Schema.Exists() {
+ return f, errors.Newf(token.NoPos,
+ "no schema specified for protobuf interpretation.")
+ }
+ return f, jsonpb.NewDecoder(cfg.Schema).RewriteFile(f)
+ }
+}
+
func reader(f *build.File, stdin io.Reader) (io.ReadCloser, error) {
switch s := f.Source.(type) {
case nil:
diff --git a/internal/filetypes/types.cue b/internal/filetypes/types.cue
index 07521db..935deb3 100644
--- a/internal/filetypes/types.cue
+++ b/internal/filetypes/types.cue
@@ -139,20 +139,22 @@
// Extension maps file extensions to default file properties.
extensions: {
- "": _
- ".cue": tags.cue
- ".json": tags.json
- ".jsonl": tags.jsonl
- ".ldjson": tags.jsonl
- ".ndjson": tags.jsonl
- ".yaml": tags.yaml
- ".yml": tags.yaml
- ".txt": tags.text
- ".go": tags.go
- ".proto": tags.proto
+ "": _
+ ".cue": tags.cue
+ ".json": tags.json
+ ".jsonl": tags.jsonl
+ ".ldjson": tags.jsonl
+ ".ndjson": tags.jsonl
+ ".yaml": tags.yaml
+ ".yml": tags.yaml
+ ".txt": tags.text
+ ".go": tags.go
+ ".proto": tags.proto
+ ".textproto": tags.textproto
+ ".textpb": tags.textproto // perhaps also pbtxt
+
// TODO: jsonseq,
- // ".textproto": tags.textpb
- // ".pb": tags.binpb
+ // ".pb": tags.binpb // binarypb
}
// A Encoding indicates a file format for representing a program.
@@ -179,12 +181,22 @@
cue: encoding: "cue"
- json: encoding: "json"
- jsonl: encoding: "jsonl"
- yaml: encoding: "yaml"
- proto: encoding: "proto"
- // "textpb": encodings.textproto
+ json: encoding: "json"
+ jsonl: encoding: "jsonl"
+ yaml: encoding: "yaml"
+ proto: encoding: "proto"
+ textproto: encoding: "textproto"
// "binpb": encodings.binproto
+
+ // pb is used either to indicate binary encoding, or to indicate
+ pb: *{
+ encoding: "binarypb"
+ interpretation: ""
+ } | {
+ encoding: !="binarypb"
+ interpretation: "pb"
+ }
+
text: {
encoding: "text"
form: "data"
@@ -308,10 +320,17 @@
encoding: "proto"
}
-// encodings: textproto: {
-// forms.DataEncoding
-// encoding: "textproto"
-// }
+encodings: textproto: {
+ forms.data
+ encoding: "textproto"
+ stream: false
+}
+
+encodings: binarypb: {
+ forms.data
+ encoding: "binarypb"
+ stream: false
+}
// encodings: binproto: {
// forms.DataEncoding
@@ -340,3 +359,8 @@
forms.schema
encoding: *"json" | _
}
+
+interpretations: pb: {
+ forms.data
+ stream: true
+}
diff --git a/internal/filetypes/types.go b/internal/filetypes/types.go
index 41f7aba..b2948ea 100644
--- a/internal/filetypes/types.go
+++ b/internal/filetypes/types.go
@@ -41,5 +41,5 @@
return v
}
-// Data size: 1624 bytes.
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+// Data size: 1709 bytes.
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