Sources/XCMetricsBackendLib/Healthcheck/Checkers/JobsHealthChecker.swift

// Copyright (c) 2021 Spotify AB.
//
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

import Vapor
import Queues

protocol JobHealthChecker {
    func check() -> EventLoopFuture<HTTPStatus>
}

final class JobHealthCheckerImpl: JobHealthChecker {

    let queue: Queue

    init(queue: Queue) {
        self.queue = queue
    }

    func check() -> EventLoopFuture<HTTPStatus> {
        return queue.dispatch(HealthCheckJob.self,
                              "PING",
                              maxRetryCount: 1)
        .transform(to: HTTPStatus.ok)
    }

}