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amazon sqs block ip queuing

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This commit is contained in:
Kyle Spearrin
2019-03-18 16:23:37 -04:00
parent 7d65f8fa76
commit 8427c23b5e
7 changed files with 262 additions and 67 deletions
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72
src/Core/Services/Implementations/AmazonSqsBlockIpService.cs Normal file
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using System.Threading.Tasks;
using System;
using Amazon.SQS;
using Amazon;
namespace Bit.Core.Services
{
public class AmazonSqsBlockIpService : IBlockIpService, IDisposable
{
private readonly AmazonSQSClient _client;
private string _blockIpQueueUrl;
private string _unblockIpQueueUrl;
private bool _didInit = false;
private Tuple<string, bool, DateTime> _lastBlock;
public AmazonSqsBlockIpService(
GlobalSettings globalSettings)
{
if(string.IsNullOrWhiteSpace(globalSettings.Amazon?.AccessKeyId))
{
throw new ArgumentNullException(nameof(globalSettings.Amazon.AccessKeyId));
}
if(string.IsNullOrWhiteSpace(globalSettings.Amazon?.AccessKeySecret))
{
throw new ArgumentNullException(nameof(globalSettings.Amazon.AccessKeySecret));
}
if(string.IsNullOrWhiteSpace(globalSettings.Amazon?.Region))
{
throw new ArgumentNullException(nameof(globalSettings.Amazon.Region));
}
_client = new AmazonSQSClient(globalSettings.Amazon.AccessKeyId,
globalSettings.Amazon.AccessKeySecret, RegionEndpoint.GetBySystemName(globalSettings.Amazon.Region));
}
public void Dispose()
{
_client?.Dispose();
}
public async Task BlockIpAsync(string ipAddress, bool permanentBlock)
{
var now = DateTime.UtcNow;
if(_lastBlock != null && _lastBlock.Item1 == ipAddress && _lastBlock.Item2 == permanentBlock &&
(now - _lastBlock.Item3) < TimeSpan.FromMinutes(1))
{
// Already blocked this IP recently.
return;
}
_lastBlock = new Tuple<string, bool, DateTime>(ipAddress, permanentBlock, now);
await _client.SendMessageAsync(_blockIpQueueUrl, ipAddress);
if(!permanentBlock)
{
await _client.SendMessageAsync(_unblockIpQueueUrl, ipAddress);
}
}
private async Task InitAsync()
{
if(_didInit)
{
return;
}
var blockIpQueue = await _client.GetQueueUrlAsync("block-ip");
_blockIpQueueUrl = blockIpQueue.QueueUrl;
var unblockIpQueue = await _client.GetQueueUrlAsync("unblock-ip");
_unblockIpQueueUrl = unblockIpQueue.QueueUrl;
_didInit = true;
}
}
}