// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
loggerFactory.AddConsole(Configuration.GetSection("Logging"));
loggerFactory.AddDebug();
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
// app.UseExceptionHandler("/Home/Error");
app.UseDeveloperExceptionPage();
}
using (var serviceScope = app.ApplicationServices.GetRequiredService <IServiceScopeFactory>().CreateScope())
{
// get the application's database context
DbContext context = serviceScope.ServiceProvider.GetService <DbTestContext>();
// do any pending migrations
context.Database.Migrate();
// populate the column comments. Comments are the PGSQL column descriptions
DbCommentsUpdater <DbTestContext> updater = new DbCommentsUpdater <DbTestContext>((DbTestContext)context);
updater.UpdateDatabaseDescriptions();
}
app.UseMvc();
app.UseDefaultFiles();
app.UseStaticFiles();
app.UseSwagger();
app.UseSwaggerUi();
}
/// <summary>
/// Database Migration
/// </summary>
/// <param name="app"></param>
/// <param name="loggerFactory"></param>
private void TryMigrateDatabase(IApplicationBuilder app, ILoggerFactory loggerFactory)
{
ILogger log = loggerFactory.CreateLogger(typeof(Startup));
log.LogInformation("Attempting to migrate the database ...");
try
{
using (IServiceScope serviceScope = app.ApplicationServices.GetRequiredService <IServiceScopeFactory>().CreateScope())
{
log.LogInformation("Fetching the application's database context ...");
DbContext context = serviceScope.ServiceProvider.GetService <DbAppContext>();
log.LogInformation("Migrating the database ...");
context.Database.Migrate();
log.LogInformation("The database migration complete.");
log.LogInformation("Updating the database documentation ...");
DbCommentsUpdater <DbAppContext> updater = new DbCommentsUpdater <DbAppContext>((DbAppContext)context);
updater.UpdateDatabaseDescriptions();
log.LogInformation("The database documentation has been updated.");
log.LogInformation("Adding/Updating seed data ...");
Seeders.SeedFactory <DbAppContext> seederFactory = new Seeders.SeedFactory <DbAppContext>(Configuration, _hostingEnv, loggerFactory);
seederFactory.Seed((DbAppContext)context);
log.LogInformation("Seeding operations are complete.");
}
log.LogInformation("All database migration activities are complete.");
}
catch (Exception e)
{
StringBuilder msg = new StringBuilder();
msg.AppendLine("The database migration failed!");
msg.AppendLine("The database may not be available and the application will not function as expected.");
msg.AppendLine("Please ensure a database is available and the connection string is correct.");
msg.AppendLine("If you are running in a development environment, ensure your test database and server configuraiotn match the project's default connection string.");
log.LogCritical(new EventId(-1, "Database Migration Failed"), e, msg.ToString());
}
}
