add replace resource option (#55)

src/Caster.Api/Data/Migrations/20241210162042_replace_addresses.cs

@@ -0,0 +1,33 @@
+/*
+Copyright 2021 Carnegie Mellon University. All Rights Reserved. 
+ Released under a MIT (SEI)-style license. See LICENSE.md in the project root for license information.
+*/
+
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Caster.Api.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class replace_addresses : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "replace_addresses",
+                table: "runs",
+                type: "text",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "replace_addresses",
+                table: "runs");
+        }
+    }
+}

src/Caster.Api/Data/Migrations/CasterContextModelSnapshot.cs

@@ -22,7 +22,7 @@ protected override void BuildModel(ModelBuilder modelBuilder)
         {
 #pragma warning disable 612, 618
             modelBuilder
-                .HasAnnotation("ProductVersion", "6.0.7")
+                .HasAnnotation("ProductVersion", "8.0.8")
                 .HasAnnotation("Relational:MaxIdentifierLength", 63);
 
             NpgsqlModelBuilderExtensions.HasPostgresExtension(modelBuilder, "uuid-ossp");
@@ -591,6 +591,10 @@ protected override void BuildModel(ModelBuilder modelBuilder)
                         .HasColumnType("uuid")
                         .HasColumnName("modified_by_id");
 
+                    b.Property<string>("ReplaceAddresses")
+                        .HasColumnType("text")
+                        .HasColumnName("replace_addresses");
+
                     b.Property<int>("Status")
                         .HasColumnType("integer")
                         .HasColumnName("status");

src/Caster.Api/Domain/Models/Run.cs

@@ -30,6 +30,8 @@ public class Run
 
         public string[] Targets { get; set; }
 
+        public string[] ReplaceAddresses { get; set; }
+
         public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
         public Guid? CreatedById { get; set; }
         public User CreatedBy { get; set; }
@@ -86,6 +88,13 @@ public void Configure(EntityTypeBuilder<Run> builder)
                     str => str.Split('\n', StringSplitOptions.RemoveEmptyEntries)
                 );
 
+            builder
+                .Property<string[]>(r => r.ReplaceAddresses)
+                .HasConversion(
+                    list => String.Join('\n', list),
+                    str => str.Split('\n', StringSplitOptions.RemoveEmptyEntries)
+                );
+
             builder
                 .HasOne(r => r.Plan)
                 .WithOne(p => p.Run)

src/Caster.Api/Domain/Services/TerraformService.cs

@@ -21,7 +21,7 @@ public interface ITerraformService
         TerraformResult InitializeWorkspace(Workspace workspace, DataReceivedEventHandler outputHandler);
         TerraformResult Init(Workspace workspace, DataReceivedEventHandler outputHandler);
         TerraformResult SelectWorkspace(Workspace workspace, DataReceivedEventHandler outputHandler);
-        TerraformResult Plan(Workspace workspace, bool destroy, string[] targets, DataReceivedEventHandler outputHandler);
+        TerraformResult Plan(Workspace workspace, bool destroy, string[] targets, string[] replaceAddresses, DataReceivedEventHandler outputHandler);
         TerraformResult Apply(Workspace workspace, DataReceivedEventHandler outputHandler);
         TerraformResult Show(Workspace workspace);
         TerraformResult Taint(Workspace workspace, string address, string statePath);
@@ -190,7 +190,7 @@ public TerraformResult SelectWorkspace(Workspace workspace, DataReceivedEventHan
             return this.Run(workspace, args, outputHandler);
         }
 
-        public TerraformResult Plan(Workspace workspace, bool destroy, string[] targets, DataReceivedEventHandler outputHandler)
+        public TerraformResult Plan(Workspace workspace, bool destroy, string[] targets, string[] replaceAddresses, DataReceivedEventHandler outputHandler)
         {
             List<string> args = new List<string> { "plan", "-input=false", "-out=plan" };
 
@@ -209,6 +209,11 @@ public TerraformResult Plan(Workspace workspace, bool destroy, string[] targets,
                 args.Add($"--target={target}");
             }
 
+            foreach (string address in replaceAddresses)
+            {
+                args.Add($"-replace={address}");
+            }
+
             return this.Run(workspace, args, outputHandler);
         }
 

src/Caster.Api/Features/Runs/EventHandlers/RunAddedHandler.cs

@@ -154,7 +154,7 @@ private async Task<bool> DoWork(Domain.Models.Run run)
                 }
 
                 // Plan
-                var planResult = _terraformService.Plan(workspace, run.IsDestroy, run.Targets, OutputHandler);
+                var planResult = _terraformService.Plan(workspace, run.IsDestroy, run.Targets, run.ReplaceAddresses, OutputHandler);
                 isError = planResult.IsError;
             }
 
@@ -280,7 +280,7 @@ private void OnTimedEvent(Object source, ElapsedEventArgs e)
 
         /// <summary>
         /// Attempts to mitigate common issues with destroying Azure workspaces.
-        /// If previous destroys failed, remove from the state any resources that exist within an 
+        /// If previous destroys failed, remove from the state any resources that exist within an
         /// azurerm_resource_group managed by this workspace. They will be destroyed implicitly when destroying the workspace and
         /// can avoid errors with destroying those resources directly.
         /// </summary>

src/Caster.Api/Features/Runs/Requests/Create.cs

@@ -46,6 +46,12 @@ public class Command : IRequest<Run>
             /// </summary>
             [DataMember]
             public string[] Targets { get; set; }
+
+            /// <summary>
+            /// Optional list of resources to replace on this Run
+            /// </summary>
+            [DataMember]
+            public string[] ReplaceAddresses { get; set; }
         }
 
         public class Handler : IRequestHandler<Command, Run>

src/Caster.Api/Features/Runs/Run.cs

@@ -34,6 +34,11 @@ public class Run
         /// </summary>
         public string[] Targets { get; set; }
 
+        /// <summary>
+        /// Optional list of resources to replace on this Run
+        /// </summary>
+        public string[] ReplaceAddresses { get; set; }
+
         /// <summary>
         /// The Plan for this Run, if one exists. Null if not requested
         /// </summary>