private void ProcessMigrations(IVersionMigrationHelper migrationHelper, string direction)
{
Version.TryParse(_options.RequestedApiVersion(migrationHelper.GetHttpContext()), out var requestedVersion);
var currentVersion = Version.Parse(_options.CurrentApiVersion);
if (requestedVersion == null || currentVersion.Equals(requestedVersion))
{
return;
}
var migrations = GetMigrations();
if (direction == "up")
{
migrations = migrations.Reverse();
}
foreach (var migration in migrations)
{
if (!ShouldApply(requestedVersion, migration.GetVersionTag(), direction))
{
continue;
}
if (direction == "up")
{
migration.Up(migrationHelper);
}
else
{
migration.Down(migrationHelper);
}
}
}
private static async Task InitializeRequestBody(HttpContext context, IVersionMigrationHelper migrationHelper)
{
var request = context.Request;
var requestStream = request.Body;
var content = await new StreamReader(requestStream).ReadToEndAsync();
migrationHelper.SetRequestBody(content);
}
private static async Task <Stream> RewriteRequest(IVersionMigrationHelper migrationHelper)
{
var json = JsonConvert.SerializeObject(migrationHelper.GetRequestBody <object>());
var requestContent = new StringContent(json, Encoding.UTF8, "application/json");
var stream = await requestContent.ReadAsStreamAsync().ConfigureAwait(false);
return(stream);
}
public void Up(IVersionMigrationHelper migrationHelper)
{
if (ShouldApply(migrationHelper.GetHttpContext()))
{
var user = migrationHelper.GetRequestBody <dynamic>();
if (user.userId == null)
{
user.userId = user.id;
}
migrationHelper.SetRequestBody(user);
}
}
public void Down(IVersionMigrationHelper migrationHelper)
{
if (ShouldApply(migrationHelper.GetHttpContext()))
{
var user = migrationHelper.GetResponseBody <dynamic>();
var oldFormat = new
{
id = user.userId,
user.email,
user.name
};
migrationHelper.SetResponseBody(oldFormat);
}
}
public void Up(IVersionMigrationHelper migrationHelper)
{
}
public void Down(IVersionMigrationHelper migrationHelper)
{
}