如何解决如何在Vapor中运行命令行工具以响应HTTP请求?
我有一个node.js命令行工具,我想运行该工具来生成资产以响应在Vapor 4中收到的HTTP请求。
解决方法
我想是这样的
func requestHandler(_ req: Request) throws -> EventLoopFuture<HTTPStatus> {
let promise = req.eventLoop.makePromise(of: HTTPStatus.self)
let process = Process()
// e.g. use `which node` to find path to `node`
process.executableURL = URL(fileURLWithPath: "/path/to/binary") // e.g. /usr/bin/node
// in which folder execute the command,it is optional
process.currentDirectoryPath = "/path/to/folder"
// optional arguments,e.g. if your arguments are -c release then it should be ["-c","release"]
process.arguments = ["arg1","arg2","argN"]
// wait for termination in closure
process.terminationHandler = { process in
switch process.terminationStatus {
// probably normal termination via SIGTERM or when process successfully finished
case 0:
promise.succeed(.ok)
default:
promise.fail(Abort(.failedDependency,reason: "Process finished with code \(process.terminationStatus)"))
}
}
// don't forget to launch it
try process.run()
return promise.futureResult
}
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