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Code Issues Releases Wiki Activity

Fix heartbeats being ignored.

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This commit is contained in:
Nick Blakely 2020-08-11 22:15:13 -07:00
parent e44d685d55
commit c6c9b6f4f9
1 changed files with 8 additions and 1 deletions
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9
Giants.Services/Store/CosmosDbServerRegistryStore.cs
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@ -20,6 +20,8 @@
private readonly IDateTimeProvider dateTimeProvider; private readonly IDateTimeProvider dateTimeProvider;
private readonly TimeSpan timeoutPeriod; private readonly TimeSpan timeoutPeriod;
private CosmosDbClient client; private CosmosDbClient client;
private const int ServerRefreshIntervalInMinutes = 1;
public CosmosDbServerRegistryStore( public CosmosDbServerRegistryStore(
ILogger<CosmosDbServerRegistryStore> logger, ILogger<CosmosDbServerRegistryStore> logger,
@ -104,7 +106,12 @@
if (allServerInfo.ContainsKey(serverInfo.HostIpAddress)) if (allServerInfo.ContainsKey(serverInfo.HostIpAddress))
{ {
if (allServerInfo[serverInfo.HostIpAddress].Equals(serverInfo)) ServerInfo existingServerInfo = allServerInfo[serverInfo.HostIpAddress];
// DDOS protection: skip write to Cosmos if parameters have not changed,
// or it's not been long enough.
if (existingServerInfo.Equals(serverInfo)
&& Math.Abs((existingServerInfo.LastHeartbeat - serverInfo.LastHeartbeat).TotalMinutes) < ServerRefreshIntervalInMinutes)
{ {
this.logger.LogInformation("State for {IPAddress} is unchanged. Skipping write to store.", serverInfo.HostIpAddress); this.logger.LogInformation("State for {IPAddress} is unchanged. Skipping write to store.", serverInfo.HostIpAddress);
return; return;