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Merge pull request #1133 from Snowflake-Labs/snowpark-backend
Snowpark backend
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| #!/usr/bin/env node | ||
|
|
||
| // NPM imports | ||
| import * as fs from "fs"; | ||
| import path from 'path'; | ||
| import { Command } from 'commander' | ||
| import cli = require('./cli') | ||
| import * as util from 'util' | ||
|
|
||
| const fsWriteFile = util.promisify(fs.writeFile); | ||
| const fsMakeDir = util.promisify(fs.mkdir); | ||
| const fsReadFile = util.promisify(fs.readFile); | ||
|
|
||
| const worker = require("./../Morphir.Elm.CLI").Elm.Morphir.Elm.CLI.init(); | ||
|
|
||
| interface CommandOptions { | ||
| /** | ||
| * Name of the decorations file to load | ||
| */ | ||
| decorations?: string; | ||
|
|
||
| /** | ||
| * Internal property used to send the contents of the decorations file to the Elm code. | ||
| */ | ||
| decorationsObj?: Array<{ [key: string]: Array<string> }>; | ||
| limitToModules?: string; | ||
| includeCodecs?: boolean; | ||
| target?: string; | ||
| } | ||
|
|
||
| function copyRedistributables(outputPath: string) { | ||
| const copyFiles = (src: string, dest: string) => { | ||
| const sourceDirectory: string = path.join( | ||
| path.dirname(__dirname), | ||
| "redistributable", | ||
| src | ||
| ); | ||
| if (fs.existsSync(sourceDirectory)) { | ||
| fs.cpSync(sourceDirectory, outputPath, { recursive: true, errorOnExist: false }); | ||
| } else { | ||
| console.warn(`WARNING: Cannot find directory ${sourceDirectory}`); | ||
| } | ||
| }; | ||
| copyFiles("Snowpark", outputPath); | ||
| } | ||
|
|
||
| const generate = async ( | ||
| options: CommandOptions, | ||
| ir: string | ||
| ): Promise<string[]> => { | ||
| return new Promise((resolve, reject) => { | ||
| worker.ports.jsonDecodeError.subscribe((err: any) => { | ||
| reject(err); | ||
| }); | ||
| worker.ports.generateResult.subscribe(([err, ok]: any) => { | ||
| if (err) { | ||
| reject(err); | ||
| } else { | ||
| resolve(ok); | ||
| } | ||
| }); | ||
|
|
||
| worker.ports.generate.send([options, ir, []]); | ||
| }); | ||
| }; | ||
|
|
||
| const gen = async ( | ||
| input: string, | ||
| outputPath: string, | ||
| options: CommandOptions | ||
| ) => { | ||
| await fsMakeDir(outputPath, { | ||
| recursive: true, | ||
| }); | ||
|
|
||
| // Add default values for these options | ||
| options.limitToModules = ''; | ||
| options.includeCodecs = false; | ||
| options.target = 'Snowpark' | ||
|
|
||
| if (options.decorations) { | ||
| if (fs.existsSync(path.resolve(options.decorations))) { | ||
| let fileContents = await fsReadFile(path.resolve(options.decorations)); | ||
| options.decorationsObj = JSON.parse(fileContents.toString()); | ||
| } else { | ||
| console.warn(`WARNING: The specified decorations file do not exist: ${options.decorations}`) | ||
| } | ||
| } | ||
|
|
||
| const morphirIrJson: Buffer = await fsReadFile(path.resolve(input)); | ||
| const generatedFiles: string[] = await generate( | ||
| options, | ||
| JSON.parse(morphirIrJson.toString()) | ||
| ); | ||
|
|
||
| const writePromises = generatedFiles.map( | ||
| async ([[dirPath, fileName], content]: any) => { | ||
| const fileDir: string = dirPath.reduce( | ||
| (accum: string, next: string) => path.join(accum, next), | ||
| outputPath | ||
| ); | ||
| const filePath: string = path.join(fileDir, fileName); | ||
|
|
||
| if (await cli.fileExist(filePath)) { | ||
| const existingContent: Buffer = await fsReadFile(filePath); | ||
|
|
||
| if (existingContent.toString() !== content) { | ||
| await fsWriteFile(filePath, content); | ||
| console.log(`UPDATE - ${filePath}`); | ||
| } | ||
| } else { | ||
| await fsMakeDir(fileDir, { | ||
| recursive: true, | ||
| }); | ||
| await fsWriteFile(filePath, content); | ||
| console.log(`INSERT - ${filePath}`); | ||
| } | ||
| } | ||
| ); | ||
| const filesToDelete = await cli.findFilesToDelete(outputPath, generatedFiles); | ||
| const deletePromises = filesToDelete.map(async (fileToDelete: string) => { | ||
| console.log(`DELETE - ${fileToDelete}`); | ||
| return fs.unlinkSync(fileToDelete); | ||
| }); | ||
| copyRedistributables(outputPath); | ||
| return Promise.all(writePromises.concat(deletePromises)); | ||
| }; | ||
|
|
||
| const program = new Command() | ||
| program | ||
| .name('morphir snowpark-gen') | ||
| .description('Generate Scala with Snowpark code from Morphir IR') | ||
| .option('-i, --input <path>', 'Source location where the Morphir IR will be loaded from.', 'morphir-ir.json') | ||
| .option('-o, --output <path>', 'Target location where the generated code will be saved.', './dist') | ||
| .option('-dec, --decorations <filename>', 'JSON file with decorations') | ||
|
|
||
| .parse(process.argv) | ||
|
|
||
| gen(program.opts().input, path.resolve(program.opts().output), program.opts()) | ||
| .then(() => { | ||
| console.log('Done') | ||
| }) | ||
| .catch((err) => { | ||
| console.log(err) | ||
| process.exit(1) | ||
| }) |
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