protected virtual void Dispose(bool disposing)
{
if (!_disposed)
{
if (disposing)
{
if (this.cloudWatchClient != null)
{
this.cloudWatchClient.Dispose();
this.cloudWatchClient = null;
}
this.sender = null;
}
_disposed = true;
}
}
public void Start(CounterSampleSenderBase sender)
{
if (_disposed)
{
throw new ObjectDisposedException("Resource was disposed.");
}
if (this.sender != null)
{
throw new InvalidOperationException("Already started(), can't call for second time");
}
this.sender = sender;
if (this.sender.SendInterval < MinSendInterval)
{
throw new ArgumentOutOfRangeException("sender", "sender.SendInterval is out of range. Min value is " + MinSendInterval);
}
// Dimension of InstanceId
if (!String.IsNullOrEmpty(this.settings.AWSInstanceIdLookupUrl))
{
try
{
this.instanceId = new WebClient().DownloadString(this.settings.AWSInstanceIdLookupUrl);
}
catch (Exception e)
{
// This will fail if running machine is not in AWS EC2
Log.Error(e);
Log.WarnFormat(
"Failed to retrieve AWS instance id. Use hostname {0} instead. Lookup URL was: {1}",
this.instanceId,
this.settings.AWSInstanceIdLookupUrl);
}
}
// Dimension of AutoScalingGroup
if (!String.IsNullOrEmpty(this.settings.AutoScalingConfigFilePath))
{
try
{
var autoScalingConfigFile = new FileInfo(this.settings.AutoScalingConfigFilePath);
if (!autoScalingConfigFile.Exists)
{
Log.WarnFormat("AutoScalingConfigFile not found: {0}",
this.settings.AutoScalingConfigFilePath);
}
else
{
using (var sr = new StreamReader(autoScalingConfigFile.FullName))
{
this.autoScalingGroupName = sr.ReadToEnd().Trim();
}
Log.InfoFormat(
"AutoScalingGroupName {0} read from config file {1}",
this.autoScalingGroupName,
autoScalingConfigFile.FullName);
}
}
catch (Exception e)
{
Log.Error(e);
Log.WarnFormat(
"Failed to read AutoScalingGroupName from config file {0}",
this.settings.AutoScalingConfigFilePath);
}
}
// Amazon AWS CloudWatch Client init
this.cloudWatchClient =
new AmazonCloudWatchClient(
this.settings.AWSCloudWatchAccessKey,
this.settings.AWSCloudWatchSecretKey, new AmazonCloudWatchConfig
{
ServiceURL = this.settings.AWSCloudWatchServiceUrl.OriginalString
});
}
