/// <summary>
/// Returns what package migration names are pending
/// </summary>
/// <param name="keyValues">
/// These are the key/value pairs from the keyvalue storage of migration names and their final values
/// </param>
/// <returns></returns>
public IReadOnlyList <string> GetPendingPackageMigrations(IReadOnlyDictionary <string, string?>?keyValues)
{
var packageMigrationPlans = _packageMigrationPlans.ToList();
var pendingMigrations = new List <string>(packageMigrationPlans.Count);
foreach (PackageMigrationPlan plan in packageMigrationPlans)
{
string?currentMigrationState = null;
var planKeyValueKey = Constants.Conventions.Migrations.KeyValuePrefix + plan.Name;
if (keyValues?.TryGetValue(planKeyValueKey, out var value) ?? false)
{
currentMigrationState = value;
if (!plan.FinalState.InvariantEquals(value))
{
// Not equal so we need to run
pendingMigrations.Add(plan.Name);
}
}
else
{
// If there is nothing in the DB then we need to run
pendingMigrations.Add(plan.Name);
}
_logger.LogDebug(
"Final package migration for {PackagePlan} state is {FinalMigrationState}, database contains {DatabaseState}",
plan.Name,
plan.FinalState,
currentMigrationState ?? "<null>");
}
return(pendingMigrations);
}
