57 lines
1.4 KiB
Swift
57 lines
1.4 KiB
Swift
import EnvVars
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import Logging
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import MQTTNIO
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import NIO
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import ServiceLifecycle
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/// Manages the MQTT broker connection.
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public actor MQTTConnectionService: Service {
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private let cleanSession: Bool
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public let client: MQTTClient
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private var shuttingDown = false
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var logger: Logger { client.logger }
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public init(
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cleanSession: Bool = true,
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client: MQTTClient
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) {
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self.cleanSession = cleanSession
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self.client = client
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}
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/// The entry-point of the service.
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///
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/// This method connects to the MQTT broker and manages the connection.
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/// It will attempt to gracefully shutdown the connection upon receiving
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/// `sigterm` signals.
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public func run() async throws {
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await withGracefulShutdownHandler {
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await self.connect()
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} onGracefulShutdown: {
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Task { await self.shutdown() }
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}
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}
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private func shutdown() async {
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shuttingDown = true
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try? await client.disconnect()
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try? await client.shutdown()
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}
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private func connect() async {
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do {
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try await client.connect(cleanSession: cleanSession)
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client.addCloseListener(named: "SensorsClient") { [self] _ in
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Task {
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self.logger.debug("Connection closed.")
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self.logger.debug("Reconnecting...")
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await self.connect()
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}
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}
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logger.debug("Connection successful.")
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} catch {
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logger.trace("Connection Failed.\n\(error)")
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}
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}
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}
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