/// <summary>
/// Actions on service start
/// </summary>
private static void OnStartEvent()
{
try
{
List <RunningInstance> instances = ServersWatcher.Instances;
EC2Helper ec2Helper = EC2Helper.Make();
RunningInstance instance = ec2Helper.GetCurrentInstance(instances);
if (instance == null)
{
return;
}
// Assign elastic IP if it is free and tag exists
var tag = ec2Helper.GetElasticIpTag(instance);
if (tag != null)
{
ec2Helper.AssignElasticIpByTag(instance, tag);
}
}
catch (Exception ex)
{
Logger.Log(ex.Message, EventLogEntryType.Error);
throw new Exception(ex.Message, ex);
}
}
private static void ConsoleStartTest()
{
try
{
List <RunningInstance> instances = ServersWatcher.Instances;
EC2Helper ec2Helper = EC2Helper.Make();
RunningInstance instance = ec2Helper.GetCurrentInstance(instances);
if (instance == null)
{
return;
}
Console.WriteLine("Instance: {0}", ServersWatcher.GetInstanceName(instance));
// Assign elastic IP if it is free and tag exists
var tag = ec2Helper.GetElasticIpTag(instance);
if (tag != null)
{
Console.WriteLine("Tag value: {0}", tag.Value);
ec2Helper.AssignElasticIpByTag(instance, tag);
}
else
{
Console.WriteLine("Tag not found");
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
/// <summary>
/// Access helper instance
/// </summary>
/// <returns>instance referance</returns>
public static EC2Helper Make()
{
//create instance if there is no one yet
if (_singleton == null)
{
_singleton = new EC2Helper();
}
//return instance referance
return(_singleton);
}
/// <summary>
/// Actions on timer event
/// </summary>
/// <param name="source"></param>
/// <param name="e"></param>
private static void OnTimerEvent(object source, ElapsedEventArgs e)
{
try
{
List <RunningInstance> instances = ServersWatcher.Instances;
// Write running instances to hosts file
HostsManager hostsMgr = new HostsManager();
hostsMgr.OpenHostsFile();
foreach (RunningInstance inst in instances)
{
hostsMgr.AddRecord(inst.PrivateIpAddress, ServersWatcher.GetInstanceName(inst));
}
hostsMgr.CommitHostsFile();
//Apply ElasticIP for current host:
EC2Helper ec2Helper = EC2Helper.Make();
RunningInstance instance = ec2Helper.GetCurrentInstance(instances);
if (instance == null)
{
return;
}
if (ec2Helper.IsElasticIpAssigned(instance))
{
// ElasticIP assigned to instance, update tags
Tag tag = new Tag().WithKey(EC2Helper.TAG_ELASTIC_IP).WithValue(instance.IpAddress);
ec2Helper.AddTagToInstance(instance.InstanceId, tag);
}
else
{
var tag = ec2Helper.GetElasticIpTag(instance);
// Delete tag if exists
if (tag != null)
{
ec2Helper.DeleteTag(instance.InstanceId, tag);
}
}
}
catch (Exception ex)
{
Logger.Log(ex.Message, EventLogEntryType.Error);
throw new Exception(ex.Message, ex);
}
}
private static void ConsoleInstanceTest()
{
try
{
List <RunningInstance> instances = ServersWatcher.Instances;
//Apply ElasticIP for current host:
EC2Helper ec2Helper = EC2Helper.Make();
RunningInstance instance = ec2Helper.GetCurrentInstance(instances);
if (instance == null)
{
return;
}
Console.WriteLine("Instance: {0}", ServersWatcher.GetInstanceName(instance));
if (ec2Helper.IsElasticIpAssigned(instance))
{
Console.WriteLine("ElasticIP assigned to instance: {0}", instance.IpAddress);
// ElasticIP assigned to instance update tags
Tag tag = new Tag().WithKey(EC2Helper.TAG_ELASTIC_IP).WithValue(instance.IpAddress);
ec2Helper.AddTagToInstance(instance.InstanceId, tag);
}
else
{
var tag = ec2Helper.GetElasticIpTag(instance);
// Delete tag if exists
if (tag != null)
{
Console.WriteLine("Deleting tad value: {0}", tag.Value);
ec2Helper.DeleteTag(instance.InstanceId, tag);
}
else
{
Console.WriteLine("Tag not found");
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
