private bool ExtendInstance(RedisConnection cache)
{
var redisKey = GetRedisKey(cache.RedisKeyFormat, Resource);
var host = GetHost(cache.ConnectionMultiplexer);
var result = false;
try
{
Logger.Debug(() => $"ExtendInstance enter {host}: {redisKey}, {LockId}, {expiryTime}");
var extendResult = (long) cache.ConnectionMultiplexer
.GetDatabase(cache.RedisDatabase)
.ScriptEvaluate(ExtendIfMatchingValueScript, new RedisKey[] {redisKey}, new RedisValue[] {LockId, (int) expiryTime.TotalSeconds}, CommandFlags.DemandMaster);
result = (extendResult == 1);
}
catch (Exception ex)
{
Logger.Debug($"Error extending lock instance {host}: {ex.Message}");
}
Logger.Debug(() => $"ExtendInstance exit {host}: {redisKey}, {LockId}, {result}");
return result;
}
private async Task<bool> UnlockInstanceAsync(RedisConnection cache)
{
var redisKey = GetRedisKey(cache.RedisKeyFormat, Resource);
var host = GetHost(cache.ConnectionMultiplexer);
var result = false;
try
{
Logger.Debug(() => $"UnlockInstanceAsync enter {host}: {redisKey}, {LockId}");
result = (bool) await cache.ConnectionMultiplexer
.GetDatabase(cache.RedisDatabase)
.ScriptEvaluateAsync(UnlockScript, new RedisKey[] { redisKey }, new RedisValue[] { LockId }, CommandFlags.DemandMaster)
.ConfigureAwait(false);
}
catch (Exception ex)
{
Logger.Debug($"Error unlocking lock instance {host}: {ex.Message}");
}
Logger.Debug(() => $"UnlockInstanceAsync exit {host}: {redisKey}, {LockId}, {result}");
return result;
}
private async Task<bool> LockInstanceAsync(RedisConnection cache)
{
var redisKey = GetRedisKey(cache.RedisKeyFormat, Resource);
var host = GetHost(cache.ConnectionMultiplexer);
var result = false;
try
{
Logger.Debug(() => $"LockInstanceAsync enter {host}: {redisKey}, {LockId}, {expiryTime}");
result = await cache.ConnectionMultiplexer
.GetDatabase(cache.RedisDatabase)
.StringSetAsync(redisKey, LockId, expiryTime, When.NotExists, CommandFlags.DemandMaster)
.ConfigureAwait(false);
}
catch (Exception ex)
{
Logger.Debug($"Error locking lock instance {host}: {ex.Message}");
}
Logger.Debug(() => $"LockInstanceAsync exit {host}: {redisKey}, {LockId}, {result}");
return result;
}
