private async Task UpgradeSchemaAsync(int version, string script, CancellationToken cancellationToken)
{
// check if the record for given version exists in failed status
await _schemaManagerDataStore.DeleteSchemaVersionAsync(version, SchemaVersionStatus.Failed.ToString(), cancellationToken);
await _schemaManagerDataStore.ExecuteScriptAndCompleteSchemaVersionAsync(script, version, cancellationToken);
_logger.LogInformation(string.Format(Resources.SchemaMigrationSuccessMessage, version));
}
/// <inheritdoc />
public virtual async Task ApplySchema(string connectionString, Uri server, MutuallyExclusiveType type, CancellationToken token = default)
{
EnsureArg.IsNotNullOrEmpty(connectionString, nameof(connectionString));
EnsureArg.IsNotNull(server, nameof(server));
EnsureArg.IsNotNull(type, nameof(type));
_schemaClient.SetUri(server);
try
{
_sqlServerDataStoreConfiguration.ConnectionString = connectionString;
// Base schema is required to run the schema migration tool.
// This method also initializes the database if not initialized yet.
await _baseSchemaRunner.EnsureBaseSchemaExistsAsync(token).ConfigureAwait(false);
// If InstanceSchema table is just created(as part of baseSchema), it takes a while to insert a version record
// since the Schema job polls and upserts at the specified interval in the service.
await _baseSchemaRunner.EnsureInstanceSchemaRecordExistsAsync(token).ConfigureAwait(false);
var availableVersions = (await GetAvailableSchema(server, token).ConfigureAwait(false)).ToList();
// If the user hits apply command multiple times in a row, then the service schema job might not poll the updated available versions
// so there are retries to give it a fair amount of time.
int attemptCount = 1;
availableVersions = await Policy.Handle <SchemaManagerException>()
.WaitAndRetryAsync(
retryCount: RetryAttempts,
sleepDurationProvider: (retryCount) => _retrySleepDuration,
onRetry: (exception, retryCount) =>
{
_logger.LogError(exception, string.Format(CultureInfo.InvariantCulture, Resources.RetryCurrentSchemaVersion, attemptCount++, RetryAttempts));
})
.ExecuteAsync(token => FetchUpdatedAvailableVersionsAsync(token), token)
.ConfigureAwait(false);
if (availableVersions.Count == 1)
{
_logger.LogError(Resources.AvailableVersionsDefaultErrorMessage);
return;
}
// Removes the current version since the first available version is always the current version which is already applied.
availableVersions.RemoveAt(0);
var targetVersion = type.Next == true?availableVersions.First().Id:
type.Latest == true?availableVersions.Last().Id:
type.Version;
availableVersions = availableVersions.Where(availableVersion => availableVersion.Id <= targetVersion)
.ToList();
// Checking the specified version is not out of range of available versions
if (availableVersions.Count < 1 || targetVersion < availableVersions.First().Id || targetVersion > availableVersions.Last().Id)
{
throw new SchemaManagerException(string.Format(CultureInfo.InvariantCulture, Resources.SpecifiedVersionNotAvailable, targetVersion));
}
await ValidateVersionCompatibility(availableVersions.Last().Id, token).ConfigureAwait(false);
if (availableVersions.First().Id == 1)
{
// Upgrade schema directly to the latest schema version
_logger.LogInformation(string.Format(CultureInfo.InvariantCulture, Resources.SchemaMigrationStartedMessage, availableVersions.Last().Id));
string script = await GetScriptAsync(1, availableVersions.Last().ScriptUri, token).ConfigureAwait(false);
await InitializeSchemaAsync(availableVersions.Last().Id, script, token).ConfigureAwait(false);
return;
}
foreach (AvailableVersion availableVersion in availableVersions)
{
int executingVersion = availableVersion.Id;
_logger.LogInformation(string.Format(CultureInfo.InvariantCulture, Resources.SchemaMigrationStartedMessage, executingVersion));
attemptCount = 1;
await Policy.Handle <SchemaManagerException>()
.WaitAndRetryAsync(
retryCount: RetryAttempts,
sleepDurationProvider: (retryCount) => _retrySleepDuration,
onRetry: (exception, retryCount) =>
{
_logger.LogError(exception, string.Format(CultureInfo.InvariantCulture, Resources.RetryCurrentVersions, attemptCount++, RetryAttempts));
})
.ExecuteAsync(token => ValidateInstancesVersionAsync(executingVersion, token), token)
.ConfigureAwait(false);
string script = await GetScriptAsync(executingVersion, availableVersion.ScriptUri, token, availableVersion.DiffUri).ConfigureAwait(false);
// check if the record for given version exists in failed status
await _schemaManagerDataStore.DeleteSchemaVersionAsync(executingVersion, SchemaVersionStatus.Failed.ToString(), token).ConfigureAwait(false);
await _schemaManagerDataStore.ExecuteScriptAndCompleteSchemaVersionAsync(script, executingVersion, token).ConfigureAwait(false);
_logger.LogInformation(string.Format(CultureInfo.InvariantCulture, Resources.SchemaMigrationSuccessMessage, executingVersion));
}
}
catch (Exception ex) when(ex is SchemaManagerException || ex is InvalidOperationException)
{
_logger.LogError(ex, ex.Message);
throw;
}
catch (HttpRequestException ex)
{
_logger.LogError(ex, string.Format(CultureInfo.InvariantCulture, Resources.RequestFailedMessage, server));
throw;
}
catch (Exception ex)
{
if (ex is SqlException || ex is ExecutionFailureException)
{
_logger.LogError(ex, string.Format(CultureInfo.InvariantCulture, Resources.QueryExecutionErrorMessage, ex.Message));
return;
}
throw;
}
}
