//Event Handler
public void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
var changes = from ch in e.Changes.OfType<RoleEnvironmentTopologyChange>()
select ch;
if (changes.Any())
{
const string semaphoreName = "SemaphoreShutDown";
Semaphore sem = null;
// Attempt to open the named semaphore.
try
{
sem = Semaphore.OpenExisting(semaphoreName);
}
catch (WaitHandleCannotBeOpenedException)
{
return;
}
sem.Release(1);
//Note this may be superfulous, as this event may be running on a non-blocking thread. To be investigated.
//If a blocking thread, this gives some time for IIS to complete its shutdown, based on the semaphore release
//above.
Thread.Sleep(20000);
}
}
private static void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
if (!e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange)) return;
Trace.WriteLine("Working", "Environment Change: " + e.Changes.ToList());
e.Cancel = true;
}
/// <summary>
/// Event handler called when an environment change is to be applied to the role.
/// Determines whether or not the role instance must be recycled.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The list of changed environment values.</param>
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// If Azure should recycle the role, e.Cancel should be set to true.
// If the changes are ones we can handle without a recycle, we set it to false.
e.Cancel = this.RecycleConfiguration(e.Changes);
Trace.WriteLine("WebRole environment change - role instance recycling: " + e.Cancel.ToString());
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// If a configuration setting is changing
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
// set e.Cancel to true to restart this role instance
e.Cancel = true;
}
private static void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
e.Cancel = true;
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
//Are any of the environment changes a configuration setting change? If so, cancel the event and restart the role
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
e.Cancel = true;
}
}
static void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
{
if (e.Changes.OfType<RoleEnvironmentConfigurationSettingChange>().Count() > 0)
{
// Cancel the changing event to force role instance restart
//e.Cancel = true;
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
e.Cancel = false; // don't restart for configuration changes
/*if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
e.Cancel = true;
}*/
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e) // pro forma, not used, most config settings are in an azure table
{
// If a configuration setting is changing
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// for any configuration setting change except EnableTableStorageTraceListener
if (e.Changes.OfType<RoleEnvironmentConfigurationSettingChange>().Any(change => change.ConfigurationSettingName != "EnableTableStorageTraceListener"))
{
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// 如果配置设置数值变化
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
// 将e.Cancel设为true重启这个角色实例
e.Cancel = true;
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// 如果配置设置改变
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
// 设置e.Cancel为真重启角色实例
e.Cancel = true;
}
}
private static void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// for any configuration setting change except TraceEventTypeFilter
if (e.Changes.OfType <RoleEnvironmentConfigurationSettingChange>().Any(change => change.ConfigurationSettingName != "TraceEventTypeFilter"))
{
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// 如果配置设置改变
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
// 设置e.Cancel为真重启角色实例
e.Cancel = true;
}
}
static void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
var i = 1;
foreach (var c in e.Changes)
Trace.WriteLine(string.Format("RoleEnvironmentChanging: #{0} Type={1} Change={2}", i++, c.GetType().FullName, c));
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
e.Cancel = true;
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// �������������ֵ�仯
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
// ��e.Cancel��Ϊtrue���������ɫʵ��
e.Cancel = true;
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// If a configuration setting is changing
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
foreach (RoleEnvironmentChange change in e.Changes)
{
if (change.GetType() == typeof(RoleEnvironmentConfigurationSettingChange))
{
e.Cancel = true;
}
}
}
/// <summary>
/// Role Environment Changing
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">Role Environment Changing Event Args</param>
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
foreach (RoleEnvironmentConfigurationSettingChange change in e.Changes)
{
if (null != change && !string.IsNullOrWhiteSpace(change.ConfigurationSettingName) && this.config.ContainsKey(change.ConfigurationSettingName))
{
this.config.Remove(change.ConfigurationSettingName);
}
}
}
/// <summary>
/// This event is called after configuration changes have been submited to Windows Azure but before they have been applied in this instance
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="RoleEnvironmentChangingEventArgs" /> instance containing the event data.</param>
private void RoleEnvironmentOnChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// Implements the changes after restarting the role instance
foreach (RoleEnvironmentConfigurationSettingChange settingChange in e.Changes.Where(x => x is RoleEnvironmentTopologyChange))
{
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
return;
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
Func <RoleEnvironmentConfigurationSettingChange, bool> changeIsExempt =
x => !Settings.ExemptConfigurationItems.Contains(x.ConfigurationSettingName);
var environmentChanges = e.Changes.OfType <RoleEnvironmentConfigurationSettingChange>();
e.Cancel = environmentChanges.Any(changeIsExempt);
DiagnosticsHelper.TraceInformation("Role config changing. Cancel set to {0}",
e.Cancel);
}
private void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
{
//**
var settingChanges = e.Changes.OfType <RoleEnvironmentConfigurationSettingChange>();
if (settingChanges.Any(change => change.ConfigurationSettingName == "connectionString"))
{
Trace.TraceInformation("WorkerBackend restarting");
e.Cancel = true;
}
}
private void HandleRoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
foreach (var c in e.Changes.OfType <RoleEnvironmentTopologyChange>())
{
if (c.RoleName.Equals(AzureConstants.StoreWorkerRoleName))
{
Trace.TraceInformation("BrightstarCluster: Received RoleEnvironmentTopologyChange event. Updating store worker client list");
UpdateClientList();
}
}
}
private void OnRoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
var configurationChanges = e.Changes.OfType <RoleEnvironmentConfigurationSettingChange>();
if (configurationChanges.Any())
{
// If Azure settings changed, take the instance offline, applies the configuration change, and then brings the instance back online.
// For more details, please refer to this article: https://msdn.microsoft.com/en-us/library/azure/gg432963.aspx
e.Cancel = true;
}
}
private void HandleRoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
foreach(var c in e.Changes.OfType<RoleEnvironmentTopologyChange>())
{
if (c.RoleName.Equals(AzureConstants.StoreWorkerRoleName))
{
Trace.TraceInformation("BrightstarCluster: Received RoleEnvironmentTopologyChange event. Updating store worker client list");
UpdateClientList();
}
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
WriteToTempFile("RoleEnvironmentChanging:" + e.Cancel);
// If a configuration setting is changing
foreach (RoleEnvironmentConfigurationSettingChange settingChange in e.Changes.Where(x => x is RoleEnvironmentTopologyChange))
{
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
return;
}
}
/// <summary>
/// Event handler for the scenario when a config value is changing
/// </summary>
/// <param name="sender">
/// Who the sender is
/// </param>
/// <param name="changingEventArgs">
/// Changing Event args <see cref="RoleEnvironmentChangingEventArgs"/>
/// </param>
/// <exception cref="ArgumentNullException">
/// Parameter changingEventArgs cannot be null.
/// </exception>
public void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs changingEventArgs)
{
if (changingEventArgs == null)
{
throw new ArgumentNullException("changingEventArgs", "Parameter changingEventArgs cannot be null.");
}
Log.Information("Got a configuration change event");
//Cancel true means reboot. So we need to ask if we have a change we care about then don't reboot.
changingEventArgs.Cancel = ShouldRebootRole(changingEventArgs);
}
static void OnRoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// we restart all workers if the configuration changed (e.g. the storage account)
// for now.
// We do not request a recycle if only the topology changed,
// e.g. if some instances have been removed or added.
var configChanges = e.Changes.OfType <RoleEnvironmentConfigurationSettingChange>();
if (configChanges.Any())
{
RoleEnvironment.RequestRecycle();
}
}
static void OnRoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// we restart all workers if the configuration changed (e.g. the storage account)
// for now.
// We do not request a recycle if only the topology changed,
// e.g. if some instances have been removed or added.
var configChanges = e.Changes.OfType<RoleEnvironmentConfigurationSettingChange>();
if(configChanges.Any())
{
RoleEnvironment.RequestRecycle();
}
}
static void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
var i = 1;
foreach (var c in e.Changes)
{
Trace.WriteLine(string.Format("RoleEnvironmentChanging: #{0} Type={1} Change={2}", i++, c.GetType().FullName, c));
}
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
e.Cancel = true;
}
}
void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
{
Trace.TraceInformation("Change notification");
if (e.Changes.OfType<RoleEnvironmentConfigurationSettingChange>()
.Any(c => !string.Equals(c.ConfigurationSettingName, MvcApplication.AzureLoggingVerbositySettingName, StringComparison.Ordinal)))
{
Trace.TraceInformation("Cancelling instance");
e.Cancel = true;
}
else
{
Trace.TraceInformation("Handling change without recycle");
}
}
private static void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
int i = 1;
foreach (var c in e.Changes)
{
Trace.WriteLine(string.Format("RoleEnvironmentChanging: #{0} Type={1} Change={2}", i++, c.GetType().FullName, c));
}
// If a configuration setting is changing);
if (e.Changes.Any((RoleEnvironmentChange change) => change is RoleEnvironmentConfigurationSettingChange))
{
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
}
}
void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
{
Trace.TraceInformation("Change notification");
if (e.Changes.OfType <RoleEnvironmentConfigurationSettingChange>()
.Any(c => !string.Equals(c.ConfigurationSettingName, MvcApplication.AzureLoggingVerbositySettingName, StringComparison.Ordinal)))
{
Trace.TraceInformation("Cancelling instance");
e.Cancel = true;
}
else
{
Trace.TraceInformation("Handling change without recycle");
}
}
private static void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
int i = 1;
foreach (var c in e.Changes)
{
Trace.WriteLine($"RoleEnvironmentChanging: #{i++} Type={c.GetType().FullName} Change={c}");
}
// If a configuration setting is changing);
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
}
}
private static void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
int i = 1;
foreach (var c in e.Changes)
{
Trace.WriteLine(string.Format("RoleEnvironmentChanging: #{0} Type={1} Change={2}", i++, c.GetType().FullName, c));
}
// If a configuration setting is changing);
if (e.Changes.Any((RoleEnvironmentChange change) => change is RoleEnvironmentConfigurationSettingChange))
{
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
}
}
private void OnChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
foreach (var change in e.Changes)
{
var configChange = change as RoleEnvironmentConfigurationSettingChange;
if (configChange != null)
{
if (configChange.ConfigurationSettingName == "DatabaseConnectionString")
{
// Our database connectionstring changed.
// Maybe we need to restart the instance to make sure our cached objects no longer use the previous value.
e.Cancel = true;
}
}
}
}
/// <summary>
/// Is called if the azure portal environment changes as a result of sysadmin manual activity on the webpage.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="RoleEnvironmentChangingEventArgs" /> instance containing the event data.</param>
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
try
{
//Trace.WriteLine("WorkerRole RoleEnvironmentChanging", "Information");
// If a configuration setting is changing
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
}
}
catch (Exception)
{
}
}
void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
{
var configurationChanges = e.Changes
.OfType <RoleEnvironmentConfigurationSettingChange>()
.ToList();
if (!configurationChanges.Any())
{
return;
}
if (configurationChanges.Any(c => c.ConfigurationSettingName == "StorageAccount"))
{
e.Cancel = true;
}
}
void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
{
if (RoleEnvironment.IsEmulated)
{
// var traceSource = CreateTraceSource();
Trace.TraceInformation("RoleEnvironment.Changing for {0}:", RoleEnvironment.CurrentRoleInstance.Id);
foreach (RoleEnvironmentChange change in e.Changes)
{
Trace.TraceInformation(" > {0}", change.GetType());
}
}
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
e.Cancel = true;
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
TraceManager.WorkerRoleComponent.TraceIn(InstanceId, CloudEnvironment.CurrentRoleInstanceId);
// If a configuration setting is changing.
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
// Tell the configuration manager to unload any cached configuration data.
ApplicationConfiguration.Current.Unload();
// Set e.Cancel to true to restart this role instance, otherwise keep the role instance running.
e.Cancel = false;
}
// Invoke the user defined part of the RoleEnvironmentChanging event handler.
OnRoleEnvironmentChanging(sender, e);
TraceManager.WorkerRoleComponent.TraceOut(InstanceId, e.Cancel);
}
/// <summary>
/// RoleEventChanging - Called when a change is about to be applied to the role. Determines whether or not to recycle the role instance.
/// </summary>
/// <param name="sender"></param>
/// <param name="e">A list of what is changing</param>
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// Note: e.Cancel == true -> Azure should recycle the role. If all the changes are in our "exempt" list,
// we don't need to recycle the role.
e.Cancel = HasNonExemptConfigurationChanges(e.Changes);
// Note that we use Trace.WriteLine here rather than going through the Diagnostics class so that we will always log
// this, even when the switch for whether to log or not is being changed.
if (!e.Cancel)
{
Trace.WriteLine("Processor.WorkerRole::RoleEnvironmentChanging - role is not recycling, getting new switch values from config file.");
}
else
{
Trace.WriteLine("Processor.WorkerRole::RoleEnvironmentChanging - recycling role instance due to non-exempt configuration changes.");
}
}
private void RoleEnvironmentOnChanging(object sender, RoleEnvironmentChangingEventArgs roleEnvironmentChangingEventArgs)
{
// In order to handle changing configuration
// this can be avoided if the config is not "singleton" but it is recreated via this event
// https://msdn.microsoft.com/en-us/library/azure/gg432963.aspx
// https://alexandrebrisebois.wordpress.com/2013/09/29/handling-cloud-service-role-configuration-changes-in-windows-azure/
var configurationChanges = roleEnvironmentChangingEventArgs.Changes
.OfType<RoleEnvironmentConfigurationSettingChange>()
.ToList();
if (!configurationChanges.Any())
{
return;
}
// TODO for specific settings which are uesd to instantiate any cached objects
//if(configurationChanges.Any(c => c.ConfigurationSettingName == "StorageAccount"))
roleEnvironmentChangingEventArgs.Cancel = true;
}
/// <summary>
/// Handle configuration change events for ChefClient_ServerURL, ChefClient_Role, or ChefClient_Environment.
/// This will cancel the event and force a Role Restart so that the client scripts (main.ps1) will reset a new
/// connection and client registration with the new Server.
/// </summary>
/// <param name="sender">Sender object</param>
/// <param name="e">Event arguments</param>
private static void ChefConfigChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
var configurationChanges = e.Changes.OfType <RoleEnvironmentConfigurationSettingChange>().ToList();
if (!configurationChanges.Any())
{
return;
}
if (configurationChanges.Any(c => c.ConfigurationSettingName == "ChefClient_SetBusyCheck"))
{
ClientService.statusCheckFilePath = CloudConfigurationManager.GetSetting("ChefClient_SetBusyCheck");
}
if (configurationChanges.Any(c => c.ConfigurationSettingName == "ChefClient_ServerUrl" ||
c.ConfigurationSettingName == "ChefClient_Role" ||
c.ConfigurationSettingName == "ChefClient_Environment"))
{
Stop(new TimeSpan(0, 0, 30), true);
e.Cancel = true;
}
}
/*
* In the Changing event, RoleEnvironment.CurrentRoleInstance.Role.Instances returns the original role instances,
* not the target role instances. There is no way of finding out the target role instances at this time.
*/
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
originalNumOfInstances = RoleEnvironment.CurrentRoleInstance.Role.Instances.Count;
Logfile.Get(logfile).fTextout(Logging.Fontcolors.RED, "{0} > RoleEnvironmentChanging Eventhandler logging original instance count of {1} <br>", DateTime.Now.ToString(), originalNumOfInstances);
Logfile.Get(logfile).Update();
highestRoleInstanceId = RoleEnvironment.CurrentRoleInstance.Role.Instances.ElementAt(originalNumOfInstances - 1).Id;
// The role instance with the lowest id deletes the db entry in case of downscale.
if ("ImagingProcessorWorker_IN_0" == RoleEnvironment.CurrentRoleInstance.Id)
{
Logfile.Get(logfile).fTextout(Logging.Fontcolors.RED, "{0} > This ({1}) is the role instance with the lowest RoleInstanceId <br>", DateTime.Now.ToString(), RoleEnvironment.CurrentRoleInstance.Id);
Logfile.Get(logfile).Update();
lowestRoleInstanceId = true;
}
else
{
Logfile.Get(logfile).fTextout(Logging.Fontcolors.RED, "{0} > This ({1}) is NOT the role instance with the lowest RoleInstanceId <br>", DateTime.Now.ToString(), RoleEnvironment.CurrentRoleInstance.Id);
Logfile.Get(logfile).Update();
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
Trace.TraceInformation("RoleEnvironmentChanging Event Fired");
var changes = e.Changes
.OfType <RoleEnvironmentConfigurationSettingChange>()
.ToList();
if (!changes.Any())
{
return;
}
e.Cancel = true; // Instruct server to reboot on change (if not canceled below)
//// TODO: Implement (for now just repboot server)
//// Service Bus Connection Strings Updated
//if (changes.Any(c => c.ConfigurationSettingName == ""))
//{
// e.Cancel = false; // Cancel reboot of server
//}
}
private void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
{
var changedSettings = e.Changes.OfType <RoleEnvironmentConfigurationSettingChange>()
.Select(c => c.ConfigurationSettingName).ToList();
Trace.TraceInformation("Configuration Changing notification. Settings being changed: "
+ string.Join(", ", changedSettings));
if (changedSettings
.Any(settingName => !string.Equals(settingName, CustomSettingName, StringComparison.Ordinal)))
{
Trace.TraceInformation("Cancelling dynamic configuration change (restarting).");
// Setting this to true will restart the role gracefully. If Cancel is not set to true,
// and the change is not handled by the application, then the application will not use
// the new value until it is restarted (either manually or for some other reason).
e.Cancel = true;
}
else
{
Trace.TraceInformation("Handling configuration change without restarting.");
}
}
private void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
{
var changedSettings = e.Changes.OfType<RoleEnvironmentConfigurationSettingChange>()
.Select(c => c.ConfigurationSettingName).ToList();
Trace.TraceInformation("Configuration Changing notification. Settings being changed: "
+ string.Join(", ", changedSettings));
if (changedSettings
.Any(settingName => !string.Equals(settingName, CustomSettingName, StringComparison.Ordinal)))
{
Trace.TraceInformation("Cancelling dynamic configuration change (restarting).");
// Setting this to true will restart the role gracefully. If Cancel is not set to true,
// and the change is not handled by the application, then the application will not use
// the new value until it is restarted (either manually or for some other reason).
e.Cancel = true;
}
else
{
Trace.TraceInformation("Handling configuration change without restarting.");
}
}
private static void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
Boolean recycle = false;
foreach (RoleEnvironmentChange change in e.Changes)
{
RoleEnvironmentTopologyChange topologyChange = change as RoleEnvironmentTopologyChange;
if (topologyChange != null)
{
String roleName = topologyChange.RoleName;
ReadOnlyCollection<RoleInstance> oldInstances = RoleEnvironment.Roles[roleName].Instances;
}
RoleEnvironmentConfigurationSettingChange settingChange = change as RoleEnvironmentConfigurationSettingChange;
if (settingChange != null)
{
String settingName = settingChange.ConfigurationSettingName;
String oldValue = RoleEnvironment.GetConfigurationSettingValue(settingName);
recycle |= settingName == "SettingRequiringRecycle";
}
}
// Recycle when e.Cancel = true;
e.Cancel = recycle;
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// 如果一个配置环境发生变化
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
{
// 将e.Cancel设为true重启这个角色实例
e.Cancel = true;
}
}
private static void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
Trace.TraceInformation("RoleEnvironmentChanging Event Fired");
var changes = e.Changes
.OfType<RoleEnvironmentConfigurationSettingChange>()
.ToList();
if (!changes.Any())
{
return;
}
e.Cancel = true; // Instruct server to reboot on change (if not canceled below)
// TODO: Implement (for now just repboot server)
//// Service Bus Connection Strings Updated
//if (changes.Any(c => c.ConfigurationSettingName == ServiceBus.FrontendServiceBusConnectionStringName))
//{
// e.Cancel = false; // Cancel reboot of server
//}
//if (changes.Any(c => c.ConfigurationSettingName == ServiceBus.WorkerServiceBusConnectionStringName))
//{
// e.Cancel = false; // Cancel reboot of server
//}
}
private void RoleEnvironmentOnChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
e.Cancel = true;
}
//Event Handler
public void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
/*var changes = from ch in e.Changes.OfType<RoleEnvironmentTopologyChange>()
select ch;
if (changes.Any())
{
myHost.deActivateHosts();
ConfigUtility.writeConsoleMessage("\nWorker Role OnStop: Node ID: " + AzureUtility.getRoleInstanceID() + " Has Shut Down. Goodbye!\n", EventLogEntryType.Warning, true, new Sample.HelloServiceSettings.Settings());
}*/
}
/// <summary>
/// RoleEventChanging - Called when a change is about to be applied to the role. Determines whether or not to recycle the role instance.
/// </summary>
/// <param name="sender"></param>
/// <param name="e">A list of what is changing</param>
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// Note: e.Cancel == true -> Azure should recycle the role. If all the changes are in our "exempt" list,
// we don't need to recycle the role.
e.Cancel = HasNonExemptConfigurationChanges(e.Changes);
// Note that we use Trace.WriteLine here rather than going through the Diagnostics class so that we will always log
// this, even when the switch for whether to log or not is being changed.
if (!e.Cancel)
{
Trace.WriteLine("WebRoleDiagnostics::RoleEnvironmentChanging - role is not recycling, getting new switch values from config file.");
}
else
{
Trace.WriteLine("WebRoleDiagnostics::RoleEnvironmentChanging - recycling role instance due to non-exempt configuration changes.");
}
}
/// <summary>
/// Force restart of the instance.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void OnRoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
if (e.Changes.Any(o => o is RoleEnvironmentChange))
e.Cancel = true;
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
// If a user configuration setting is changing
if ((from change in e.Changes.OfType<RoleEnvironmentConfigurationSettingChange>()
where !(change.ConfigurationSettingName.StartsWith("Microsoft.WindowsAzure.Plugins.RemoteAccess.") ||
change.ConfigurationSettingName.StartsWith("Microsoft.WindowsAzure.Plugins.RemoteForwarder."))
select change).Any())
{
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
e.Cancel = false;
}
/// <summary>
/// Changing event handler
/// </summary>
/// <param name="sender">
/// Sender object
/// </param>
/// <param name="changingEventArgs">
/// Chaning Event details
/// </param>
internal void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs changingEventArgs)
{
ConfigChangeHandler.RoleEnvironmentChanging(sender, changingEventArgs);
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
Func<RoleEnvironmentConfigurationSettingChange, bool> changeIsExempt =
x => !Settings.ExemptConfigurationItems.Contains(x.ConfigurationSettingName);
var environmentChanges = e.Changes.OfType<RoleEnvironmentConfigurationSettingChange>();
e.Cancel = environmentChanges.Any(changeIsExempt);
DiagnosticsHelper.TraceInformation(string.Format("Role config changing. Cancel set to {0}",
e.Cancel));
}
private void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
{
// Setting cancel to false indicates that this instance should _not_ be restarted
// in response to the configuration change.
e.Cancel = Config.Get().OnConfigurationChanging(e.Changes);
if (e.Cancel)
{
Log.TraceInformation("Role will be restarted due to configuration change");
}
}
private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
{
Tracer.WriteLine("RoleEnvironmentChanging", "Information");
log.WriteEntry("RoleEnvironmentChanging", "", GetLabel());
// Don't object to any role environment changes
// See RoleEnvironmentChanged for our attempt to cope with the changes
}
