From 4d9f49d25bb71ae8280e22d1bff3d59d957380d7 Mon Sep 17 00:00:00 2001
From: Yunus Emre Kalkan <emre.kalkan@volosoft.com>
Date: Fri, 5 Mar 2021 12:02:24 +0300
Subject: [PATCH] Set random port when a new Microservice is created

resolves https://github.com/volosoft/volo/issues/5716
---
 .../MicroserviceServiceRandomPortStep.cs      | 78 +++++++++++++++++++
 .../MicroserviceServiceTemplateBase.cs        |  6 ++
 2 files changed, 84 insertions(+)
 create mode 100644 framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Building/Steps/MicroserviceServiceRandomPortStep.cs

diff --git a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Building/Steps/MicroserviceServiceRandomPortStep.cs b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Building/Steps/MicroserviceServiceRandomPortStep.cs
new file mode 100644
index 0000000000..88a19b43af
--- /dev/null
+++ b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Building/Steps/MicroserviceServiceRandomPortStep.cs
@@ -0,0 +1,78 @@
+using System;
+using System.IO;
+using System.Linq;
+using Volo.Abp.Cli.Commands;
+
+namespace Volo.Abp.Cli.ProjectBuilding.Building.Steps
+{
+    public class MicroserviceServiceRandomPortStep : ProjectBuildPipelineStep
+    {
+        private readonly string _defaultPort = string.Empty;
+        private string _tyeFileContent = null;
+
+        public MicroserviceServiceRandomPortStep(string defaultPort)
+        {
+            _defaultPort = defaultPort;
+        }
+
+        public override void Execute(ProjectBuildContext context)
+        {
+            var newPort = GetNewRandomPort(context);
+
+            var targetFiles = context.Files.Where(f=> f.Name.EndsWith("launchSettings.json") || f.Name.EndsWith("appsettings.json")).ToList();
+
+            foreach (var file in targetFiles)
+            {
+                file.SetContent(file.Content.Replace(_defaultPort, newPort));
+            }
+        }
+
+        private string GetNewRandomPort(ProjectBuildContext context)
+        {
+            string newPort;
+            var rnd = new Random();
+            var tryCount = 0;
+
+            do
+            {
+                newPort = rnd.Next(44350, 45350).ToString();
+
+                if (tryCount++ > 2000)
+                {
+                    break;
+                }
+
+            } while (PortExistsForAnotherService(context, newPort));
+
+            return newPort;
+        }
+
+        private bool PortExistsForAnotherService(ProjectBuildContext context, string newPort)
+        {
+            return ReadTyeFileContent(context).SplitToLines().Any(l => l.Contains("port") && l.Contains(newPort));
+        }
+
+        private string ReadTyeFileContent(ProjectBuildContext context)
+        {
+            if (_tyeFileContent != null)
+            {
+                return _tyeFileContent;
+            }
+
+            var solutionFolderPath = context.BuildArgs.ExtraProperties[NewCommand.Options.OutputFolder.Short] ??
+                                     context.BuildArgs.ExtraProperties[NewCommand.Options.OutputFolder.Long] ??
+                                     Directory.GetCurrentDirectory();
+
+            var tyeFilePath = Path.Combine(solutionFolderPath, "tye.yaml");
+
+            if (!File.Exists(tyeFilePath))
+            {
+                return String.Empty;
+            }
+
+            _tyeFileContent = File.ReadAllText(tyeFilePath);
+
+            return _tyeFileContent;
+        }
+    }
+}
diff --git a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/Microservice/MicroserviceServiceTemplateBase.cs b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/Microservice/MicroserviceServiceTemplateBase.cs
index de589336b0..54ec4894b9 100644
--- a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/Microservice/MicroserviceServiceTemplateBase.cs
+++ b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/Microservice/MicroserviceServiceTemplateBase.cs
@@ -31,6 +31,7 @@ namespace Volo.Abp.Cli.ProjectBuilding.Templates.Microservice
             var steps = new List<ProjectBuildPipelineStep>();
 
             DeleteUnrelatedUiProject(context, steps);
+            SetRandomPortForHostProject(context, steps);
             RandomizeStringEncryption(context, steps);
 
             return steps;
@@ -54,6 +55,11 @@ namespace Volo.Abp.Cli.ProjectBuilding.Templates.Microservice
             }
         }
 
+        private static void SetRandomPortForHostProject(ProjectBuildContext context, List<ProjectBuildPipelineStep> steps)
+        {
+            steps.Add(new MicroserviceServiceRandomPortStep("44371"));
+        }
+
         private static void RandomizeStringEncryption(ProjectBuildContext context, List<ProjectBuildPipelineStep> steps)
         {
             steps.Add(new RandomizeStringEncryptionStep());