/
parse.go
77 lines (69 loc) · 2.76 KB
/
parse.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package thrift contains functionality for converting generic data structures
// to and from Thrift payloads.
package thrift
import (
"bytes"
"fmt"
"strings"
"github.com/thriftrw/thriftrw-go/compile"
"github.com/thriftrw/thriftrw-go/protocol"
"github.com/thriftrw/thriftrw-go/wire"
)
// Parse parses the given Thrift file.
func Parse(file string) (*compile.Module, error) {
module, err := compile.Compile(file)
// thriftrw wraps errors, so we can't use os.IsNotExist here.
if err != nil {
// The user may have left off the ".thrift", so try appending .thrift
if appendedModule, err2 := compile.Compile(file + ".thrift"); err2 == nil {
module = appendedModule
err = nil
}
}
return module, err
}
// SplitMethod takes a method name like Service::Method and splits it
// into Service and Method.
func SplitMethod(fullMethod string) (svc, method string, err error) {
parts := strings.Split(fullMethod, "::")
switch len(parts) {
case 1:
return parts[0], "", nil
case 2:
return parts[0], parts[1], nil
default:
return "", "", fmt.Errorf("invalid Thrift method %q, expected Service::Method", fullMethod)
}
}
// RequestToBytes takes a user request and converts it to the Thrift binary payload.
// It uses the method spec to convert the user request.
func RequestToBytes(method *compile.FunctionSpec, request map[string]interface{}) ([]byte, error) {
w, err := structToValue(compile.FieldGroup(method.ArgsSpec), request)
if err != nil {
return nil, err
}
buf := &bytes.Buffer{}
if err := protocol.Binary.Encode(wire.NewValueStruct(w), buf); err != nil {
return nil, fmt.Errorf("failed to convert Thrift value to bytes: %v", err)
}
return buf.Bytes(), nil
}