74 lines
2.1 KiB
Swift
74 lines
2.1 KiB
Swift
import Foundation
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struct Config {
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/// The port where the server runs
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let port: Int
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/**
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The path to the file containing the containing the device authentication token.
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If the path is relative, then it is relative to the `Resources` folder.
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*/
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let keyFileName: String
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/// The seconds to wait for a response from the device
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let deviceTimeout: Int64
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/// The authentication tokens to use for monitoring of the service
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let authenticationTokens: Set<String>
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/**
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The path to the folder where the metric logs are stored
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If no path is provided, then a folder `logs` in the resources directory is created.
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If the path is relative, then it is assumed relative to the resources directory.
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*/
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let logPath: String?
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func logURL(possiblyRelativeTo resourcesDirectory: URL) -> URL {
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guard let logPath else {
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return resourcesDirectory.appendingPathComponent("logs")
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}
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return Config.url(logPath, possiblyRelativeTo: resourcesDirectory)
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}
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func keyURL(possiblyRelativeTo resourcesDirectory: URL) -> URL {
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Config.url(keyFileName, possiblyRelativeTo: resourcesDirectory)
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}
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private static func url(_ name: String, possiblyRelativeTo resourcesDirectory: URL) -> URL {
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guard !name.hasPrefix("/") else {
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return .init(fileURLWithPath: name)
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}
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return resourcesDirectory.appendingPathComponent(name)
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}
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}
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extension Config: Codable {
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}
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extension Config {
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init(loadFrom url: URL) throws {
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guard FileManager.default.fileExists(atPath: url.path) else {
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printAndFlush("No configuration file found at \(url.path)")
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fatalError("No configuration file found")
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}
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let data: Data
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do {
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data = try Data(contentsOf: url)
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} catch {
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printAndFlush("Failed to read config data: \(error)")
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throw error
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}
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do {
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self = try JSONDecoder().decode(Config.self, from: data)
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} catch {
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printAndFlush("Failed to decode config data: \(error)")
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throw error
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}
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}
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}
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