/
multi_runner.go
75 lines (67 loc) · 2.59 KB
/
multi_runner.go
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// Copyright (c) 2021 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 protoplugin
import (
"errors"
"fmt"
"sort"
"github.com/gogo/protobuf/protoc-gen-gogo/plugin"
"go.uber.org/multierr"
)
var errNoFileName = errors.New("no name on CodeGeneratorResponse_File")
type multiRunner struct {
runners []Runner
}
func newMultiRunner(runners ...Runner) *multiRunner {
return &multiRunner{runners: runners}
}
func (m *multiRunner) Run(request *plugin_go.CodeGeneratorRequest) *plugin_go.CodeGeneratorResponse {
nameToFile := make(map[string]*plugin_go.CodeGeneratorResponse_File)
var responseErr error
for _, runner := range m.runners {
response := runner.Run(request)
if responseErrString := response.GetError(); responseErrString != "" {
responseErr = multierr.Append(responseErr, errors.New(responseErrString))
continue
}
for _, file := range response.GetFile() {
name := file.GetName()
if name == "" {
return newResponseError(errNoFileName)
}
if _, ok := nameToFile[name]; ok {
return newResponseError(newErrorDuplicateFileName(name))
}
nameToFile[name] = file
}
}
if responseErr != nil {
return newResponseError(responseErr)
}
files := make([]*plugin_go.CodeGeneratorResponse_File, 0, len(nameToFile))
for _, file := range nameToFile {
files = append(files, file)
}
sort.Slice(files, func(i int, j int) bool { return files[i].GetName() < files[j].GetName() })
return newResponseFiles(files)
}
func newErrorDuplicateFileName(name string) error {
return fmt.Errorf("duplicate name for CodeGeneratorResponse_File: %s", name)
}