public void Add(LoadMetrics metrics)
{
ICollection<LoadMetrics> serverMetrics;
cacheLock.EnterWriteLock();
try
{
if (metricsCache.ContainsKey(metrics.ServerName))
serverMetrics = metricsCache[metrics.ServerName];
else
{
serverMetrics = new List<LoadMetrics>(metricsCapacity);
metricsCache.Add(metrics.ServerName, serverMetrics);
}
// TODO: revisit if we should sort items by creation date
serverMetrics.Add(metrics);
// this would be the area where we could evict metrics older than 24 hours to relieve memory pressure.
// we could also create a design that uses a timer to enable background eviction.
}
finally
{
cacheLock.ExitWriteLock();
}
}
public IHttpActionResult PostLoadMetrics(string serverName, LoadMetrics metrics)
{
if (metrics == null || string.IsNullOrWhiteSpace(serverName))
return BadRequest();
metricsCache.Add(metrics);
return Created($"metrics/{serverName}/load/", metrics);
}
public LoadMetricsTests()
{
validMetrics = new LoadMetrics("server-1", 20.2, 54.8);
}
