feat: add app health checks

Package.resolved

@@ -0,0 +1,194 @@
+{
+  "pins" : [
+    {
+      "identity" : "async-http-client",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/swift-server/async-http-client.git",
+      "state" : {
+        "revision" : "291438696abdd48d2a83b52465c176efbd94512b",
+        "version" : "1.20.1"
+      }
+    },
+    {
+      "identity" : "async-kit",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/vapor/async-kit.git",
+      "state" : {
+        "revision" : "7ece208cd401687641c88367a00e3ea2b04311f1",
+        "version" : "1.19.0"
+      }
+    },
+    {
+      "identity" : "console-kit",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/vapor/console-kit.git",
+      "state" : {
+        "revision" : "a31f44ebfbd15a2cc0fda705279676773ac16355",
+        "version" : "4.14.1"
+      }
+    },
+    {
+      "identity" : "multipart-kit",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/vapor/multipart-kit.git",
+      "state" : {
+        "revision" : "12ee56f25bd3fc4c2d09c2aa16e69de61dc786e8",
+        "version" : "4.6.0"
+      }
+    },
+    {
+      "identity" : "routing-kit",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/vapor/routing-kit.git",
+      "state" : {
+        "revision" : "2a92a7eac411a82fb3a03731be5e76773ebe1b3e",
+        "version" : "4.9.0"
+      }
+    },
+    {
+      "identity" : "swift-algorithms",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-algorithms.git",
+      "state" : {
+        "revision" : "f6919dfc309e7f1b56224378b11e28bab5bccc42",
+        "version" : "1.2.0"
+      }
+    },
+    {
+      "identity" : "swift-atomics",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-atomics.git",
+      "state" : {
+        "revision" : "cd142fd2f64be2100422d658e7411e39489da985",
+        "version" : "1.2.0"
+      }
+    },
+    {
+      "identity" : "swift-collections",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-collections.git",
+      "state" : {
+        "revision" : "d029d9d39c87bed85b1c50adee7c41795261a192",
+        "version" : "1.0.6"
+      }
+    },
+    {
+      "identity" : "swift-crypto",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-crypto.git",
+      "state" : {
+        "revision" : "cc76b894169a3c86b71bac10c78a4db6beb7a9ad",
+        "version" : "3.2.0"
+      }
+    },
+    {
+      "identity" : "swift-http-types",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-http-types",
+      "state" : {
+        "revision" : "12358d55a3824bd5fed310b999ea8cf83a9a1a65",
+        "version" : "1.0.3"
+      }
+    },
+    {
+      "identity" : "swift-log",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-log.git",
+      "state" : {
+        "revision" : "e97a6fcb1ab07462881ac165fdbb37f067e205d5",
+        "version" : "1.5.4"
+      }
+    },
+    {
+      "identity" : "swift-metrics",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-metrics.git",
+      "state" : {
+        "revision" : "971ba26378ab69c43737ee7ba967a896cb74c0d1",
+        "version" : "2.4.1"
+      }
+    },
+    {
+      "identity" : "swift-nio",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio.git",
+      "state" : {
+        "revision" : "635b2589494c97e48c62514bc8b37ced762e0a62",
+        "version" : "2.63.0"
+      }
+    },
+    {
+      "identity" : "swift-nio-extras",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-extras.git",
+      "state" : {
+        "revision" : "363da63c1966405764f380c627409b2f9d9e710b",
+        "version" : "1.21.0"
+      }
+    },
+    {
+      "identity" : "swift-nio-http2",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-http2.git",
+      "state" : {
+        "revision" : "0904bf0feb5122b7e5c3f15db7df0eabe623dd87",
+        "version" : "1.30.0"
+      }
+    },
+    {
+      "identity" : "swift-nio-ssl",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-ssl.git",
+      "state" : {
+        "revision" : "7c381eb6083542b124a6c18fae742f55001dc2b5",
+        "version" : "2.26.0"
+      }
+    },
+    {
+      "identity" : "swift-nio-transport-services",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-nio-transport-services.git",
+      "state" : {
+        "revision" : "6cbe0ed2b394f21ab0d46b9f0c50c6be964968ce",
+        "version" : "1.20.1"
+      }
+    },
+    {
+      "identity" : "swift-numerics",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-numerics.git",
+      "state" : {
+        "revision" : "0a5bc04095a675662cf24757cc0640aa2204253b",
+        "version" : "1.0.2"
+      }
+    },
+    {
+      "identity" : "swift-system",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-system.git",
+      "state" : {
+        "revision" : "025bcb1165deab2e20d4eaba79967ce73013f496",
+        "version" : "1.2.1"
+      }
+    },
+    {
+      "identity" : "vapor",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/vapor/vapor.git",
+      "state" : {
+        "revision" : "4942d74e8493fc918ed6144c835c8a0e6affd4f4",
+        "version" : "4.92.1"
+      }
+    },
+    {
+      "identity" : "websocket-kit",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/vapor/websocket-kit.git",
+      "state" : {
+        "revision" : "53fe0639a98903858d0196b699720decb42aee7b",
+        "version" : "2.14.0"
+      }
+    }
+  ],
+  "version" : 2
+}

Package.swift

@@ -1,25 +1,32 @@
-// swift-tools-version: 5.8
+// swift-tools-version: 5.7
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
 
 let package = Package(
     name: "fs-app-health-checks",
     platforms: [
-        .macOS(.v13),
-        .iOS(.v16)
+        .macOS(.v13)
     ],
     products: [
         // Products define the executables and libraries a package produces, making them visible to other packages.
         .library(
             name: "AppHealthChecks",
             targets: ["AppHealthChecks"])
     ],
+    dependencies: [
+        // 💧 A server-side Swift web framework.
+        .package(url: "https://github.com/vapor/vapor.git", from: "4.0.0")
+    ],
     targets: [
         // Targets are the basic building blocks of a package, defining a module or a test suite.
         // Targets can depend on other targets in this package and products from dependencies.
         .target(
-            name: "AppHealthChecks"),
+            name: "AppHealthChecks",
+            dependencies: [
+                .product(name: "Vapor", package: "vapor")
+            ]
+        ),
         .testTarget(
             name: "AppHealthChecksTests",
             dependencies: ["AppHealthChecks"])

Sources/AppHealthChecks/Extensions/Application+Extensions.swift

@@ -0,0 +1,52 @@
+// FS App Health Checks
+// Copyright (C) 2024  FREEDOM SPACE, LLC
+
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Affero General Public License as published
+//  by the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Affero General Public License for more details.
+//
+//  You should have received a copy of the GNU Affero General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+//
+//  Application+Extensions.swift
+//
+//
+//  Created by Mykola Buhaiov on 31.01.2024.
+//
+
+import Vapor
+
+/// Extension for core type representing a Vapor application.
+extension Application {
+    /// A `ServiceIdKey` conform to StorageKey protocol
+    private struct ServiceIdKey: StorageKey {
+        /// Less verbose typealias for `UUID`.
+        typealias Value = UUID
+    }
+
+    /// Setup `serviceId` in application storage
+    public var serviceId: UUID? {
+        get { storage[ServiceIdKey.self] }
+        set { storage[ServiceIdKey.self] = newValue }
+    }
+
+    /// A `ReleaseIdKey` conform to StorageKey protocol
+    private struct ReleaseIdKey: StorageKey {
+        /// Less verbose typealias for `String`.
+        typealias Value = String
+    }
+
+    /// Setup `releaseId` in application storage
+    public var releaseId: String? {
+        get { storage[ReleaseIdKey.self] }
+        set { storage[ReleaseIdKey.self] = newValue }
+    }
+}

Sources/AppHealthChecks/HealthChecks.ApplicationStatus/AppHealthChecks.swift

@@ -0,0 +1,48 @@
+// FS App Health Checks
+// Copyright (C) 2024  FREEDOM SPACE, LLC
+
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Affero General Public License as published
+//  by the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Affero General Public License for more details.
+//
+//  You should have received a copy of the GNU Affero General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+//
+//  AppHealthChecks.swift
+//
+//
+//  Created by Mykola Buhaiov on 30.01.2024.
+//
+
+import Vapor
+
+/// Service that provides app health check functionality
+public struct AppHealthChecks {
+    /// Get app major version
+    /// - Parameter serverVersion: `String`
+    /// - Returns: `Int`
+    public func getPublicVersion(from version: String?) -> String? {
+        let components = version?.components(separatedBy: ".")
+        return components?.first
+    }
+
+    /// Get health for application
+    /// - Parameter app: `Application`
+    /// - Returns: `HealthCheck`
+    public func getHealth(from app: Application) -> HealthCheck {
+        let healthCheck = HealthCheck(
+            version: self.getPublicVersion(from: app.releaseId),
+            releaseId: app.releaseId,
+            serviceId: app.serviceId
+        )
+        return healthCheck
+    }
+}

Sources/AppHealthChecks/Response/ComponentName.swift

@@ -0,0 +1,41 @@
+// FS App Health Checks
+// Copyright (C) 2024  FREEDOM SPACE, LLC
+
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Affero General Public License as published
+//  by the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Affero General Public License for more details.
+//
+//  You should have received a copy of the GNU Affero General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+//
+//  ComponentName.swift
+//
+//
+//  Created by Mykola Buhaiov on 29.01.2024.
+//
+
+import Vapor
+
+/// Human-readable name for the component
+public enum ComponentName: String {
+    case cpu
+    case memory
+    case redis
+    case postgresql
+    case mongo
+    case kafka
+    case consul
+    case grpc
+}
+
+extension ComponentName: Content {}
+
+extension ComponentName: CaseIterable {}