ceph-csi/vendor/github.com/googleapis/gnostic/plugins/gnostic-analyze/main.go
2018-12-19 15:29:25 +01:00

96 lines
3.1 KiB
Go

// Copyright 2017 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// gnostic_analyze is a tool for analyzing OpenAPI descriptions.
//
// It scans an API description and evaluates properties
// that influence the ease and quality of code generation.
// - The number of HTTP operations of each method (GET, POST, etc).
// - The number of HTTP operations with no OperationId value.
// - The parameter types used and their frequencies.
// - The response types used and their frequencies.
// - The types used in definition objects and arrays and their frequencies.
// Results are returned in a JSON structure.
package main
import (
"encoding/json"
"os"
"path"
"strings"
"github.com/googleapis/gnostic/plugins/gnostic-analyze/statistics"
"github.com/golang/protobuf/proto"
openapiv2 "github.com/googleapis/gnostic/OpenAPIv2"
openapiv3 "github.com/googleapis/gnostic/OpenAPIv3"
plugins "github.com/googleapis/gnostic/plugins"
)
// Record an error, then serialize and return a response.
func sendAndExitIfError(err error, response *plugins.Response) {
if err != nil {
response.Errors = append(response.Errors, err.Error())
sendAndExit(response)
}
}
// Serialize and return a response.
func sendAndExit(response *plugins.Response) {
responseBytes, _ := proto.Marshal(response)
os.Stdout.Write(responseBytes)
os.Exit(0)
}
// This is the main function for the plugin.
func main() {
env, err := plugins.NewEnvironment()
env.RespondAndExitIfError(err)
var stats *statistics.DocumentStatistics
for _, model := range env.Request.Models {
switch model.TypeUrl {
case "openapi.v2.Document":
documentv2 := &openapiv2.Document{}
err = proto.Unmarshal(model.Value, documentv2)
if err == nil {
// Analyze the API document.
stats = statistics.NewDocumentStatistics(env.Request.SourceName, documentv2)
}
case "openapi.v3.Document":
documentv3 := &openapiv3.Document{}
err = proto.Unmarshal(model.Value, documentv3)
if err == nil {
// Analyze the API document.
stats = statistics.NewDocumentStatisticsV3(env.Request.SourceName, documentv3)
}
}
}
if stats != nil {
// Return the analysis results with an appropriate filename.
// Results are in files named "summary.json" in the same relative
// locations as the description source files.
file := &plugins.File{}
file.Name = strings.Replace(stats.Name, path.Base(stats.Name), "summary.json", -1)
file.Data, err = json.MarshalIndent(stats, "", " ")
file.Data = append(file.Data, []byte("\n")...)
env.RespondAndExitIfError(err)
env.Response.Files = append(env.Response.Files, file)
}
env.RespondAndExit()
}