Routes.swift demo: http://165.227.31.218:8080/fortune

Routes.swift

import Vapor
import Glibc

extension Droplet {
    func setupRoutes() throws {
        get("hello") { req in
            var json = JSON()
            try json.set("hello", "world")
            return json
        }

        get("plaintext") { req in
            return "Hello, world!"
        }

        // response to requests to /info domain
        // with a description of the request
        get("info") { req in
            return req.description
        }

        get("description") { req in return req.description }

        get("fortune") { _ in
            let result = try self.exec("fortune").reduce("", { $0.appending($1) })
            return result
        }

        try resource("posts", PostController.self)
    }

    func exec(_ cmd: String) throws -> [String] {
        var output = [String]()
        let fp = popen(cmd, "r")
        guard fp != nil else {
            throw Abort(.internalServerError)
        }
        var buf = Array<CChar>(repeating: 0, count: 128)

        while fgets(&buf, CInt(buf.count), fp) != nil {
            output.append(String(cString: buf))
        }
        pclose(fp)
        return output
    }
}