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Supporting csharpier server for 0.28.0+ (#1236)
closes #1109
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| import { ChildProcessWithoutNullStreams, spawn } from "child_process"; | ||
| import { Logger } from "./Logger"; | ||
| import { FormatFileParameter, FormatFileResult, ICSharpierProcess2 } from "./ICSharpierProcess"; | ||
| import fetch from "node-fetch"; | ||
|
|
||
| export class CSharpierProcessServer implements ICSharpierProcess2 { | ||
| private csharpierPath: string; | ||
| private logger: Logger; | ||
| private port: number = 0; | ||
| private process: ChildProcessWithoutNullStreams | undefined; | ||
| private processFailedToStart = false; | ||
| private version: string; | ||
|
|
||
| constructor(logger: Logger, csharpierPath: string, workingDirectory: string, version: string) { | ||
| this.logger = logger; | ||
| this.csharpierPath = csharpierPath; | ||
| this.spawnProcess(csharpierPath, workingDirectory); | ||
| this.version = version; | ||
|
|
||
| this.logger.debug("Warm CSharpier with initial format"); | ||
| // warm by formatting a file twice, the 3rd time is when it gets really fast | ||
| this.formatFile("public class ClassName { }", "/Temp/Test.cs").then(() => { | ||
| this.formatFile("public class ClassName { }", "/Temp/Test.cs"); | ||
| }); | ||
| } | ||
|
|
||
| getProcessFailedToStart(): boolean { | ||
| return this.processFailedToStart; | ||
| } | ||
|
|
||
| private spawnProcess(csharpierPath: string, workingDirectory: string) { | ||
| const csharpierProcess = spawn(csharpierPath, ["--server"], { | ||
| stdio: "pipe", | ||
| cwd: workingDirectory, | ||
| env: { ...process.env, DOTNET_NOLOGO: "1" }, | ||
| }); | ||
|
|
||
| csharpierProcess.on("error", data => { | ||
| this.logger.warn( | ||
| "Failed to spawn the needed csharpier process. Formatting cannot occur.", | ||
| data, | ||
| ); | ||
| this.processFailedToStart = true; | ||
| }); | ||
|
|
||
| let output = ""; | ||
| const regex = /^Started on (\d+)/; | ||
|
|
||
| csharpierProcess.stdout.on("data", chunk => { | ||
| output += chunk; | ||
| if (regex.test(output) && this.port === 0) { | ||
| this.port = parseInt(output.match(regex)![1], 10); | ||
| this.logger.debug("Connecting via port " + this.port); | ||
| this.process = csharpierProcess; | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| public async formatFile(content: string, filePath: string): Promise<string> { | ||
| const parameter = { | ||
| fileName: filePath, | ||
| fileContents: content, | ||
| }; | ||
| const result = await this.formatFile2(parameter); | ||
| return result?.formattedFile ?? ""; | ||
| } | ||
|
|
||
| public async formatFile2(parameter: FormatFileParameter): Promise<FormatFileResult | null> { | ||
| if (this.processFailedToStart) { | ||
| this.logger.warn("CSharpier process failed to start. Formatting cannot occur."); | ||
| return null; | ||
| } | ||
|
|
||
| if (typeof this.process === "undefined") { | ||
| await new Promise(r => setTimeout(r, 2000)); | ||
| } | ||
|
|
||
| if (this.processFailedToStart || typeof this.process === "undefined") { | ||
| this.logger.warn("CSharpier process failed to start. Formatting cannot occur."); | ||
| return null; | ||
| } | ||
|
|
||
| try { | ||
| const url = "http://localhost:" + this.port + "/format"; | ||
|
|
||
| const response = await fetch(url, { | ||
| method: "POST", | ||
| headers: { | ||
| "Content-Type": "application/json", | ||
| }, | ||
| body: JSON.stringify(parameter), | ||
| }); | ||
|
|
||
| if (response.status !== 200) { | ||
| this.logger.warn( | ||
| "Csharpier server returned non-200 status code of " + response.status, | ||
| ); | ||
| return null; | ||
| } | ||
|
|
||
| return await response.json(); | ||
| } catch (e) { | ||
| this.logger.warn("Failed posting to the csharpier server. " + e); | ||
| } | ||
|
|
||
| return null; | ||
| } | ||
|
|
||
| dispose() { | ||
| if (typeof this.process !== "undefined") { | ||
| (this.process.stdin as any).pause(); | ||
| this.process.kill(); | ||
| } | ||
| } | ||
|
|
||
| getVersion(): string { | ||
| return this.version; | ||
| } | ||
| } |
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