20200516111712_PGCreate.cs

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using System;
 
using Microsoft.EntityFrameworkCore.Migrations;
using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
 
namespace Tgstation.Server.Host.Database.Migrations
{
    public partial class PGCreate : Migration
    {
        protected override void Up(MigrationBuilder migrationBuilder)
        {
            ArgumentNullException.ThrowIfNull(migrationBuilder);
 
            migrationBuilder.CreateTable(
                name: "Instances",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    Name = table.Column<string>(maxLength: 10000, nullable: false),
                    Path = table.Column<string>(nullable: false),
                    Online = table.Column<bool>(nullable: false),
                    ConfigurationType = table.Column<int>(nullable: false),
                    AutoUpdateInterval = table.Column<long>(nullable: false),
                    ChatBotLimit = table.Column<int>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_Instances", x => x.Id);
                });
 
            migrationBuilder.CreateTable(
                name: "Users",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    Enabled = table.Column<bool>(nullable: false),
                    CreatedAt = table.Column<DateTimeOffset>(nullable: false),
                    SystemIdentifier = table.Column<string>(nullable: true),
                    Name = table.Column<string>(maxLength: 10000, nullable: false),
                    AdministrationRights = table.Column<decimal>(nullable: false),
                    InstanceManagerRights = table.Column<decimal>(nullable: false),
                    PasswordHash = table.Column<string>(nullable: true),
                    CreatedById = table.Column<long>(nullable: true),
                    CanonicalName = table.Column<string>(nullable: false),
                    LastPasswordUpdate = table.Column<DateTimeOffset>(nullable: true),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_Users", x => x.Id);
                    table.ForeignKey(
                        name: "FK_Users_Users_CreatedById",
                        column: x => x.CreatedById,
                        principalTable: "Users",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Restrict);
                });
 
            migrationBuilder.CreateTable(
                name: "ChatBots",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    Name = table.Column<string>(maxLength: 100, nullable: false),
                    Enabled = table.Column<bool>(nullable: true),
                    ReconnectionInterval = table.Column<long>(nullable: false),
                    ChannelLimit = table.Column<int>(nullable: false),
                    Provider = table.Column<int>(nullable: false),
                    ConnectionString = table.Column<string>(maxLength: 10000, nullable: false),
                    InstanceId = table.Column<long>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_ChatBots", x => x.Id);
                    table.ForeignKey(
                        name: "FK_ChatBots_Instances_InstanceId",
                        column: x => x.InstanceId,
                        principalTable: "Instances",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateTable(
                name: "DreamDaemonSettings",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    AllowWebClient = table.Column<bool>(nullable: false),
                    SecurityLevel = table.Column<int>(nullable: false),
                    PrimaryPort = table.Column<int>(nullable: false),
                    SecondaryPort = table.Column<int>(nullable: false),
                    StartupTimeout = table.Column<long>(nullable: false),
                    HeartbeatSeconds = table.Column<long>(nullable: false),
                    AutoStart = table.Column<bool>(nullable: false),
                    InstanceId = table.Column<long>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_DreamDaemonSettings", x => x.Id);
                    table.ForeignKey(
                        name: "FK_DreamDaemonSettings_Instances_InstanceId",
                        column: x => x.InstanceId,
                        principalTable: "Instances",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateTable(
                name: "DreamMakerSettings",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    ProjectName = table.Column<string>(maxLength: 10000, nullable: true),
                    ApiValidationPort = table.Column<int>(nullable: false),
                    ApiValidationSecurityLevel = table.Column<int>(nullable: false),
                    InstanceId = table.Column<long>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_DreamMakerSettings", x => x.Id);
                    table.ForeignKey(
                        name: "FK_DreamMakerSettings_Instances_InstanceId",
                        column: x => x.InstanceId,
                        principalTable: "Instances",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateTable(
                name: "RepositorySettings",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    CommitterName = table.Column<string>(maxLength: 10000, nullable: false),
                    CommitterEmail = table.Column<string>(maxLength: 10000, nullable: false),
                    AccessUser = table.Column<string>(maxLength: 10000, nullable: true),
                    AccessToken = table.Column<string>(maxLength: 10000, nullable: true),
                    PushTestMergeCommits = table.Column<bool>(nullable: false),
                    ShowTestMergeCommitters = table.Column<bool>(nullable: false),
                    AutoUpdatesKeepTestMerges = table.Column<bool>(nullable: false),
                    AutoUpdatesSynchronize = table.Column<bool>(nullable: false),
                    PostTestMergeComment = table.Column<bool>(nullable: false),
                    InstanceId = table.Column<long>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_RepositorySettings", x => x.Id);
                    table.ForeignKey(
                        name: "FK_RepositorySettings_Instances_InstanceId",
                        column: x => x.InstanceId,
                        principalTable: "Instances",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateTable(
                name: "RevisionInformations",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    CommitSha = table.Column<string>(maxLength: 40, nullable: false),
                    OriginCommitSha = table.Column<string>(maxLength: 40, nullable: false),
                    InstanceId = table.Column<long>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_RevisionInformations", x => x.Id);
                    table.ForeignKey(
                        name: "FK_RevisionInformations_Instances_InstanceId",
                        column: x => x.InstanceId,
                        principalTable: "Instances",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateTable(
                name: "InstanceUsers",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    UserId = table.Column<long>(nullable: false),
                    InstanceUserRights = table.Column<decimal>(nullable: false),
                    ByondRights = table.Column<decimal>(nullable: false),
                    DreamDaemonRights = table.Column<decimal>(nullable: false),
                    DreamMakerRights = table.Column<decimal>(nullable: false),
                    RepositoryRights = table.Column<decimal>(nullable: false),
                    ChatBotRights = table.Column<decimal>(nullable: false),
                    ConfigurationRights = table.Column<decimal>(nullable: false),
                    InstanceId = table.Column<long>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_InstanceUsers", x => x.Id);
                    table.ForeignKey(
                        name: "FK_InstanceUsers_Instances_InstanceId",
                        column: x => x.InstanceId,
                        principalTable: "Instances",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                    table.ForeignKey(
                        name: "FK_InstanceUsers_Users_UserId",
                        column: x => x.UserId,
                        principalTable: "Users",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateTable(
                name: "Jobs",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    Description = table.Column<string>(nullable: false),
                    ErrorCode = table.Column<long>(nullable: true),
                    ExceptionDetails = table.Column<string>(nullable: true),
                    StartedAt = table.Column<DateTimeOffset>(nullable: false),
                    StoppedAt = table.Column<DateTimeOffset>(nullable: true),
                    Cancelled = table.Column<bool>(nullable: false),
                    CancelRightsType = table.Column<decimal>(nullable: true),
                    CancelRight = table.Column<decimal>(nullable: true),
                    StartedById = table.Column<long>(nullable: false),
                    CancelledById = table.Column<long>(nullable: true),
                    InstanceId = table.Column<long>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_Jobs", x => x.Id);
                    table.ForeignKey(
                        name: "FK_Jobs_Users_CancelledById",
                        column: x => x.CancelledById,
                        principalTable: "Users",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Restrict);
                    table.ForeignKey(
                        name: "FK_Jobs_Instances_InstanceId",
                        column: x => x.InstanceId,
                        principalTable: "Instances",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                    table.ForeignKey(
                        name: "FK_Jobs_Users_StartedById",
                        column: x => x.StartedById,
                        principalTable: "Users",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateTable(
                name: "ChatChannels",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    IrcChannel = table.Column<string>(maxLength: 100, nullable: true),
                    DiscordChannelId = table.Column<decimal>(nullable: true),
                    IsAdminChannel = table.Column<bool>(nullable: false),
                    IsWatchdogChannel = table.Column<bool>(nullable: false),
                    IsUpdatesChannel = table.Column<bool>(nullable: false),
                    Tag = table.Column<string>(maxLength: 10000, nullable: true),
                    ChatSettingsId = table.Column<long>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_ChatChannels", x => x.Id);
                    table.ForeignKey(
                        name: "FK_ChatChannels_ChatBots_ChatSettingsId",
                        column: x => x.ChatSettingsId,
                        principalTable: "ChatBots",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateTable(
                name: "TestMerges",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    Number = table.Column<int>(nullable: false),
                    PullRequestRevision = table.Column<string>(maxLength: 40, nullable: false),
                    Comment = table.Column<string>(maxLength: 10000, nullable: true),
                    TitleAtMerge = table.Column<string>(nullable: false),
                    BodyAtMerge = table.Column<string>(nullable: false),
                    Url = table.Column<string>(nullable: false),
                    Author = table.Column<string>(nullable: false),
                    MergedAt = table.Column<DateTimeOffset>(nullable: false),
                    MergedById = table.Column<long>(nullable: false),
                    PrimaryRevisionInformationId = table.Column<long>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_TestMerges", x => x.Id);
                    table.ForeignKey(
                        name: "FK_TestMerges_Users_MergedById",
                        column: x => x.MergedById,
                        principalTable: "Users",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Restrict);
                    table.ForeignKey(
                        name: "FK_TestMerges_RevisionInformations_PrimaryRevisionInformationId",
                        column: x => x.PrimaryRevisionInformationId,
                        principalTable: "RevisionInformations",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateTable(
                name: "CompileJobs",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    DmeName = table.Column<string>(nullable: false),
                    Output = table.Column<string>(nullable: false),
                    DirectoryName = table.Column<Guid>(nullable: false),
                    MinimumSecurityLevel = table.Column<int>(nullable: false),
                    JobId = table.Column<long>(nullable: false),
                    RevisionInformationId = table.Column<long>(nullable: false),
                    ByondVersion = table.Column<string>(nullable: false),
                    DMApiMajorVersion = table.Column<int>(nullable: true),
                    DMApiMinorVersion = table.Column<int>(nullable: true),
                    DMApiPatchVersion = table.Column<int>(nullable: true),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_CompileJobs", x => x.Id);
                    table.ForeignKey(
                        name: "FK_CompileJobs_Jobs_JobId",
                        column: x => x.JobId,
                        principalTable: "Jobs",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                    table.ForeignKey(
                        name: "FK_CompileJobs_RevisionInformations_RevisionInformationId",
                        column: x => x.RevisionInformationId,
                        principalTable: "RevisionInformations",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateTable(
                name: "RevInfoTestMerges",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    TestMergeId = table.Column<long>(nullable: false),
                    RevisionInformationId = table.Column<long>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_RevInfoTestMerges", x => x.Id);
                    table.ForeignKey(
                        name: "FK_RevInfoTestMerges_RevisionInformations_RevisionInformationId",
                        column: x => x.RevisionInformationId,
                        principalTable: "RevisionInformations",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                    table.ForeignKey(
                        name: "FK_RevInfoTestMerges_TestMerges_TestMergeId",
                        column: x => x.TestMergeId,
                        principalTable: "TestMerges",
                        principalColumn: "Id");
                });
 
            migrationBuilder.CreateTable(
                name: "ReattachInformations",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    AccessIdentifier = table.Column<string>(nullable: false),
                    ProcessId = table.Column<int>(nullable: false),
                    IsPrimary = table.Column<bool>(nullable: false),
                    Port = table.Column<int>(nullable: false),
                    RebootState = table.Column<int>(nullable: false),
                    LaunchSecurityLevel = table.Column<int>(nullable: false),
                    CompileJobId = table.Column<long>(nullable: false),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_ReattachInformations", x => x.Id);
                    table.ForeignKey(
                        name: "FK_ReattachInformations_CompileJobs_CompileJobId",
                        column: x => x.CompileJobId,
                        principalTable: "CompileJobs",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateTable(
                name: "WatchdogReattachInformations",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false)
                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
                    AlphaIsActive = table.Column<bool>(nullable: false),
                    InstanceId = table.Column<long>(nullable: false),
                    AlphaId = table.Column<long>(nullable: true),
                    BravoId = table.Column<long>(nullable: true),
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_WatchdogReattachInformations", x => x.Id);
                    table.ForeignKey(
                        name: "FK_WatchdogReattachInformations_ReattachInformations_AlphaId",
                        column: x => x.AlphaId,
                        principalTable: "ReattachInformations",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Restrict);
                    table.ForeignKey(
                        name: "FK_WatchdogReattachInformations_ReattachInformations_BravoId",
                        column: x => x.BravoId,
                        principalTable: "ReattachInformations",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Restrict);
                    table.ForeignKey(
                        name: "FK_WatchdogReattachInformations_Instances_InstanceId",
                        column: x => x.InstanceId,
                        principalTable: "Instances",
                        principalColumn: "Id",
                        onDelete: ReferentialAction.Cascade);
                });
 
            migrationBuilder.CreateIndex(
                name: "IX_ChatBots_InstanceId_Name",
                table: "ChatBots",
                columns: new[] { "InstanceId", "Name" },
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_ChatChannels_ChatSettingsId_DiscordChannelId",
                table: "ChatChannels",
                columns: new[] { "ChatSettingsId", "DiscordChannelId" },
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_ChatChannels_ChatSettingsId_IrcChannel",
                table: "ChatChannels",
                columns: new[] { "ChatSettingsId", "IrcChannel" },
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_CompileJobs_DirectoryName",
                table: "CompileJobs",
                column: "DirectoryName");
 
            migrationBuilder.CreateIndex(
                name: "IX_CompileJobs_JobId",
                table: "CompileJobs",
                column: "JobId",
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_CompileJobs_RevisionInformationId",
                table: "CompileJobs",
                column: "RevisionInformationId");
 
            migrationBuilder.CreateIndex(
                name: "IX_DreamDaemonSettings_InstanceId",
                table: "DreamDaemonSettings",
                column: "InstanceId",
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_DreamMakerSettings_InstanceId",
                table: "DreamMakerSettings",
                column: "InstanceId",
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_Instances_Path",
                table: "Instances",
                column: "Path",
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_InstanceUsers_InstanceId",
                table: "InstanceUsers",
                column: "InstanceId");
 
            migrationBuilder.CreateIndex(
                name: "IX_InstanceUsers_UserId_InstanceId",
                table: "InstanceUsers",
                columns: new[] { "UserId", "InstanceId" },
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_Jobs_CancelledById",
                table: "Jobs",
                column: "CancelledById");
 
            migrationBuilder.CreateIndex(
                name: "IX_Jobs_InstanceId",
                table: "Jobs",
                column: "InstanceId");
 
            migrationBuilder.CreateIndex(
                name: "IX_Jobs_StartedById",
                table: "Jobs",
                column: "StartedById");
 
            migrationBuilder.CreateIndex(
                name: "IX_ReattachInformations_CompileJobId",
                table: "ReattachInformations",
                column: "CompileJobId");
 
            migrationBuilder.CreateIndex(
                name: "IX_RepositorySettings_InstanceId",
                table: "RepositorySettings",
                column: "InstanceId",
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_RevInfoTestMerges_RevisionInformationId",
                table: "RevInfoTestMerges",
                column: "RevisionInformationId");
 
            migrationBuilder.CreateIndex(
                name: "IX_RevInfoTestMerges_TestMergeId",
                table: "RevInfoTestMerges",
                column: "TestMergeId");
 
            migrationBuilder.CreateIndex(
                name: "IX_RevisionInformations_InstanceId_CommitSha",
                table: "RevisionInformations",
                columns: new[] { "InstanceId", "CommitSha" },
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_TestMerges_MergedById",
                table: "TestMerges",
                column: "MergedById");
 
            migrationBuilder.CreateIndex(
                name: "IX_TestMerges_PrimaryRevisionInformationId",
                table: "TestMerges",
                column: "PrimaryRevisionInformationId",
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_Users_CanonicalName",
                table: "Users",
                column: "CanonicalName",
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_Users_CreatedById",
                table: "Users",
                column: "CreatedById");
 
            migrationBuilder.CreateIndex(
                name: "IX_Users_SystemIdentifier",
                table: "Users",
                column: "SystemIdentifier",
                unique: true);
 
            migrationBuilder.CreateIndex(
                name: "IX_WatchdogReattachInformations_AlphaId",
                table: "WatchdogReattachInformations",
                column: "AlphaId");
 
            migrationBuilder.CreateIndex(
                name: "IX_WatchdogReattachInformations_BravoId",
                table: "WatchdogReattachInformations",
                column: "BravoId");
 
            migrationBuilder.CreateIndex(
                name: "IX_WatchdogReattachInformations_InstanceId",
                table: "WatchdogReattachInformations",
                column: "InstanceId",
                unique: true);
        }
 
        protected override void Down(MigrationBuilder migrationBuilder)
        {
            ArgumentNullException.ThrowIfNull(migrationBuilder);
 
            migrationBuilder.DropTable(
                name: "ChatChannels");
 
            migrationBuilder.DropTable(
                name: "DreamDaemonSettings");
 
            migrationBuilder.DropTable(
                name: "DreamMakerSettings");
 
            migrationBuilder.DropTable(
                name: "InstanceUsers");
 
            migrationBuilder.DropTable(
                name: "RepositorySettings");
 
            migrationBuilder.DropTable(
                name: "RevInfoTestMerges");
 
            migrationBuilder.DropTable(
                name: "WatchdogReattachInformations");
 
            migrationBuilder.DropTable(
                name: "ChatBots");
 
            migrationBuilder.DropTable(
                name: "TestMerges");
 
            migrationBuilder.DropTable(
                name: "ReattachInformations");
 
            migrationBuilder.DropTable(
                name: "CompileJobs");
 
            migrationBuilder.DropTable(
                name: "Jobs");
 
            migrationBuilder.DropTable(
                name: "RevisionInformations");
 
            migrationBuilder.DropTable(
                name: "Users");
 
            migrationBuilder.DropTable(
                name: "Instances");
        }
    }
}