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autorest.go
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autorest.go
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// Copyright 2018 Microsoft Corporation
//
// 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.
package cmd
import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"github.com/spf13/cobra"
)
var autorestCmd = &cobra.Command{
Use: "autorest <SDK dir> <specs dir>",
Short: "Execute autorest on specs, saving generated SDK code into SDK dir",
Long: `This command will execute autorest on the specs dir,
saving the generated SDK code into SDK dir, then runs some after-scripts`,
Args: func(cmd *cobra.Command, args []string) error {
return cobra.ExactArgs(2)(cmd, args)
},
RunE: func(cmd *cobra.Command, args []string) error {
sdk := args[0]
spec := args[1]
err := theAutorestCommand(sdk, spec)
return err
},
}
const (
configFileName = "swagger_to_sdk_config.json"
)
func init() {
rootCmd.AddCommand(autorestCmd)
}
func theAutorestCommand(sdk, spec string) error {
printf("Executing autorest (%d threads)\n", thread)
err := os.Setenv("NODE_OPTIONS", "--max-old-space-size=8192")
if err != nil {
return fmt.Errorf("failed to set environment variable: %v", err)
}
// get absolute path
absolutePathOfSDK, err := filepath.Abs(sdk)
if err != nil {
return fmt.Errorf("failed to get the directory of SDK: %v", err)
}
absolutePathOfSpec, err := filepath.Abs(spec)
if err != nil {
return fmt.Errorf("failed to get the directory of specs: %v", err)
}
// read options from config file
file, err := os.Open(filepath.Join(absolutePathOfSDK, configFileName))
if err != nil {
return fmt.Errorf("failed to open config file %s: %v", configFileName, err)
}
options, err := expandAutorestOptions(file, absolutePathOfSDK)
if err != nil {
return err
}
// get every single readme.md file in the directory
files, err := selectFilesWithName(absolutePathOfSpec, readme)
vprintf("Found %d readme.md files\n", len(files))
jobs := make(chan work, 1000)
results := make(chan error, 1000)
for i := 0; i < thread; i++ {
go worker(i, jobs, results)
}
for _, file := range files {
w := work{
filename: file,
options: options,
}
jobs <- w
}
close(jobs)
for range files {
<-results
}
vprintln("autorest finished")
return nil
}
const (
optionPattern = "--%s=%s"
flagPattern = "--%s"
)
func expandAutorestOptions(file *os.File, absolutePathOfSDK string) ([]string, error) {
b, _ := ioutil.ReadAll(file)
var config map[string]*json.RawMessage
if err := json.Unmarshal(b, &config); err != nil {
return nil, fmt.Errorf("failed to resolve config file: %v", err)
}
var meta map[string]*json.RawMessage
if err := json.Unmarshal(*config["meta"], &meta); err != nil {
return nil, fmt.Errorf("failed to resolve config file: %v", err)
}
var autorestOptions map[string]*json.RawMessage
if err := json.Unmarshal(*meta["autorest_options"], &autorestOptions); err != nil {
return nil, fmt.Errorf("failed to resolve config file: %v", err)
}
options := make([]string, 6)
for k, v := range autorestOptions {
if k == "sdkrel:go-sdk-folder" {
continue
}
v := string(*v)
if v == "\"\"" {
options = append(options, fmt.Sprintf(flagPattern, k))
} else {
options = append(options, fmt.Sprintf(optionPattern, k, v))
}
}
options = append(options, fmt.Sprintf(optionPattern, "go-sdk-folder", absolutePathOfSDK))
return options, nil
}