public static async Task RunAsync(
Func <Task> runFunc,
DistributedLockOptions options,
ILogger logger)
{
var distributedLock = new DistributedLock <T>(options, logger);
var acquiredLock = false;
try
{
logger.LogInformation("Trying to acquire lock.");
acquiredLock = distributedLock.AcquireLock();
if (!acquiredLock)
{
logger.LogInformation("Could not get lock, another instance is busy.");
return;
}
await runFunc();
}
catch (Exception e)
{
logger.LogCritical(0, e, "Encountered a fatal exception, exiting program.");
throw;
}
finally
{
if (acquiredLock)
{
distributedLock.ReleaseLock();
}
}
}
public static void Run(
Action runFunc,
DistributedLockOptions options,
ILogger logger)
{
RunAsync(() =>
{
runFunc();
return(Task.CompletedTask);
}, options, logger).GetAwaiter().GetResult();
}
public DistributedLock(DistributedLockOptions options)
{
_options = options;
_lockName = typeof(T).FullName ?? Guid.NewGuid().ToString("N");
_mutex = new DynamoDBMutex(
new AmazonDynamoDBClient(
options.AwsAccessKeyId,
options.AwsSecretAccessKey,
options.Region),
new DynamoDBMutexSettings
{
CreateTableIfNotExists = true,
TableName = options.TableName
});
_renewLeaseTimer.Interval = options.LeasePeriod.TotalMilliseconds / 2;
_renewLeaseTimer.Elapsed += (sender, args) => RenewLease();
}
