public void RefreshReplicationInformation(ServerClient commands)
{
lock (this)
{
var serverHash = ServerHash.GetServerHash(commands.Url);
JsonDocument document;
try
{
document = commands.DirectGet(new OperationMetadata(commands.Url, commands.Credentials), RavenReplicationDestinations);
failureCounts[commands.Url] = new FailureCounter(); // we just hit the master, so we can reset its failure count
}
catch (Exception e)
{
log.ErrorException("Could not contact master for new replication information", e);
document = ReplicationInformerLocalCache.TryLoadReplicationInformationFromLocalCache(serverHash);
}
if (document == null)
{
lastReplicationUpdate = SystemTime.UtcNow; // checked and not found
return;
}
ReplicationInformerLocalCache.TrySavingReplicationInformationToLocalCache(serverHash, document);
UpdateReplicationInformationFromDocument(document);
lastReplicationUpdate = SystemTime.UtcNow;
}
}
private void RefreshReplicationInformationInternal(string url, Func <ReplicationDocument> getReplicationDestinations)
{
lock (this)
{
var serverHash = ServerHash.GetServerHash(url);
JsonDocument document;
var fromFailoverUrls = false;
try
{
var replicationDestinations = getReplicationDestinations();
document = replicationDestinations == null ? null : RavenJObject.FromObject(replicationDestinations).ToJsonDocument();
failureCounts[url] = new FailureCounter(); // we just hit the master, so we can reset its failure count
}
catch (Exception e)
{
log.ErrorException("Could not contact master for new replication information", e);
document = ReplicationInformerLocalCache.TryLoadReplicationInformationFromLocalCache(serverHash);
if (document == null)
{
if (FailoverServers != null && FailoverServers.Length > 0) // try to use configured failover servers
{
var failoverServers = new ReplicationDocument {
Destinations = new List <ReplicationDestination>()
};
foreach (var failover in FailoverServers)
{
failoverServers.Destinations.Add(failover);
}
document = new JsonDocument
{
DataAsJson = RavenJObject.FromObject(failoverServers)
};
fromFailoverUrls = true;
}
}
}
if (document == null)
{
lastReplicationUpdate = SystemTime.UtcNow; // checked and not found
return;
}
if (!fromFailoverUrls)
{
ReplicationInformerLocalCache.TrySavingReplicationInformationToLocalCache(serverHash, document);
}
UpdateReplicationInformationFromDocument(document);
lastReplicationUpdate = SystemTime.UtcNow;
}
}
/// <summary>
/// Refreshes the replication information.
/// Expert use only.
/// </summary>
#if SILVERLIGHT || NETFX_CORE
public Task RefreshReplicationInformation(AsyncServerClient commands)
{
lock (this)
{
var serverHash = ServerHash.GetServerHash(commands.Url);
return(commands.DirectGetAsync(new OperationMetadata(commands.Url), RavenReplicationDestinations).ContinueWith((Task <JsonDocument> getTask) =>
{
JsonDocument document;
if (getTask.Status == TaskStatus.RanToCompletion)
{
document = getTask.Result;
failureCounts[commands.Url] = new FailureCounter(); // we just hit the master, so we can reset its failure count
}
else
{
log.ErrorException("Could not contact master for new replication information", getTask.Exception);
document = ReplicationInformerLocalCache.TryLoadReplicationInformationFromLocalCache(serverHash);
}
if (IsInvalidDestinationsDocument(document))
{
lastReplicationUpdate = SystemTime.UtcNow; // checked and not found
return;
}
ReplicationInformerLocalCache.TrySavingReplicationInformationToLocalCache(serverHash, document);
UpdateReplicationInformationFromDocument(document);
lastReplicationUpdate = SystemTime.UtcNow;
}));
}
}
/// <summary>
/// Refreshes the replication information.
/// Expert use only.
/// </summary>
#if SILVERLIGHT || NETFX_CORE
public Task RefreshReplicationInformation(AsyncServerClient commands)
{
lock (this)
{
var serverHash = ServerHash.GetServerHash(commands.Url);
return(commands.DirectGetAsync(new OperationMetadata(commands.Url), RavenReplicationDestinations).ContinueWith((Task <JsonDocument> getTask) =>
{
JsonDocument document;
var fromFailoverUrls = false;
if (getTask.Status == TaskStatus.RanToCompletion)
{
document = getTask.Result;
failureCounts[commands.Url] = new FailureCounter(); // we just hit the master, so we can reset its failure count
}
else
{
log.ErrorException("Could not contact master for new replication information", getTask.Exception);
document = ReplicationInformerLocalCache.TryLoadReplicationInformationFromLocalCache(serverHash);
if (document == null)
{
if (FailoverServers != null && FailoverServers.Length > 0) // try to use configured failover servers
{
var failoverServers = new ReplicationDocument {
Destinations = new List <ReplicationDestination>()
};
foreach (var failover in FailoverServers)
{
failoverServers.Destinations.Add(failover);
}
document = new JsonDocument();
document.DataAsJson = RavenJObject.FromObject(failoverServers);
fromFailoverUrls = true;
}
}
}
if (IsInvalidDestinationsDocument(document))
{
lastReplicationUpdate = SystemTime.UtcNow; // checked and not found
return;
}
if (!fromFailoverUrls)
{
ReplicationInformerLocalCache.TrySavingReplicationInformationToLocalCache(serverHash, document);
}
UpdateReplicationInformationFromDocument(document);
lastReplicationUpdate = SystemTime.UtcNow;
}));
}
}
public void RefreshReplicationInformation(ServerClient commands)
{
lock (this)
{
var serverHash = ServerHash.GetServerHash(commands.Url);
JsonDocument document;
var fromFailoverUrls = false;
try
{
document = commands.DirectGet(new OperationMetadata(commands.Url, commands.PrimaryCredentials), RavenReplicationDestinations);
failureCounts[commands.Url] = new FailureCounter(); // we just hit the master, so we can reset its failure count
}
catch (Exception e)
{
log.ErrorException("Could not contact master for new replication information", e);
document = ReplicationInformerLocalCache.TryLoadReplicationInformationFromLocalCache(serverHash);
if (document == null)
{
if (FailoverServers != null && FailoverServers.Length > 0) // try to use configured failover servers
{
var failoverServers = new ReplicationDocument {
Destinations = new List <ReplicationDestination>()
};
foreach (var failover in FailoverServers)
{
failoverServers.Destinations.Add(failover);
}
document = new JsonDocument();
document.DataAsJson = RavenJObject.FromObject(failoverServers);
fromFailoverUrls = true;
}
}
}
if (document == null)
{
lastReplicationUpdate = SystemTime.UtcNow; // checked and not found
return;
}
if (!fromFailoverUrls)
{
ReplicationInformerLocalCache.TrySavingReplicationInformationToLocalCache(serverHash, document);
}
UpdateReplicationInformationFromDocument(document);
lastReplicationUpdate = SystemTime.UtcNow;
}
}
private Task UpdateReplicationInformationIfNeededInternalAsync(string url, Func <ReplicationDocumentWithClusterInformation> getReplicationDestinations, bool force)
{
if (force == false)
{
if (Conventions.FailoverBehavior == FailoverBehavior.FailImmediately)
{
return(new CompletedTask());
}
if (lastReplicationUpdate.Add(Conventions.TimeToWaitBetweenReplicationTopologyUpdates) > SystemTime.UtcNow)
{
return(new CompletedTask());
}
}
lock (replicationLock)
{
if (firstTime && force == false)
{
var serverHash = ServerHash.GetServerHash(url);
var document = ReplicationInformerLocalCache.TryLoadReplicationInformationFromLocalCache(serverHash);
if (IsInvalidDestinationsDocument(document) == false)
{
UpdateReplicationInformationFromDocument(document);
}
}
firstTime = false;
if (lastReplicationUpdate.Add(Conventions.TimeToWaitBetweenReplicationTopologyUpdates) > SystemTime.UtcNow && force == false)
{
return(new CompletedTask());
}
var taskCopy = refreshReplicationInformationTask;
if (taskCopy != null)
{
return(taskCopy);
}
return(refreshReplicationInformationTask = Task.Factory.StartNew(() =>
RefreshReplicationInformationInternal(url, getReplicationDestinations)).
ContinueWith(task =>
{
if (task.Exception != null)
{
Log.ErrorException("Failed to refresh replication information", task.Exception);
}
refreshReplicationInformationTask = null;
}));
}
}
public Task UpdateReplicationInformationIfNeeded(ServerClient serverClient)
#endif
{
if (conventions.FailoverBehavior == FailoverBehavior.FailImmediately)
{
return(new CompletedTask());
}
if (lastReplicationUpdate.AddMinutes(5) > SystemTime.UtcNow)
{
return(new CompletedTask());
}
lock (replicationLock)
{
if (firstTime)
{
var serverHash = ServerHash.GetServerHash(serverClient.Url);
var document = ReplicationInformerLocalCache.TryLoadReplicationInformationFromLocalCache(serverHash);
if (IsInvalidDestinationsDocument(document) == false)
{
UpdateReplicationInformationFromDocument(document);
}
}
firstTime = false;
if (lastReplicationUpdate.AddMinutes(5) > SystemTime.UtcNow)
{
return(new CompletedTask());
}
var taskCopy = refreshReplicationInformationTask;
if (taskCopy != null)
{
return(taskCopy);
}
return(refreshReplicationInformationTask = Task.Factory.StartNew(() => RefreshReplicationInformation(serverClient))
.ContinueWith(task =>
{
if (task.Exception != null)
{
log.ErrorException("Failed to refresh replication information", task.Exception);
}
refreshReplicationInformationTask = null;
}));
}
}
private Task UpdateReplicationInformationIfNeededInternal(string url, Func <ReplicationDocument> getReplicationDestinations)
{
if (Conventions.FailoverBehavior == FailoverBehavior.FailImmediately)
{
return(new CompletedTask());
}
if (LastReplicationUpdate.AddMinutes(5) > SystemTime.UtcNow)
{
return(new CompletedTask());
}
lock (ReplicationLock)
{
if (FirstTime)
{
var serverHash = ServerHash.GetServerHash(url);
var document = ReplicationInformerLocalCache.TryLoadReplicationInformationFromLocalCache(serverHash);
if (IsInvalidDestinationsDocument(document) == false)
{
UpdateReplicationInformationFromDocument(document);
}
}
FirstTime = false;
if (LastReplicationUpdate.AddMinutes(5) > SystemTime.UtcNow)
{
return(new CompletedTask());
}
var taskCopy = RefreshReplicationInformationTask;
if (taskCopy != null)
{
return(taskCopy);
}
return(RefreshReplicationInformationTask = Task.Factory.StartNew(() => RefreshReplicationInformationInternal(url, getReplicationDestinations))
.ContinueWith(task =>
{
if (task.Exception != null)
{
log.ErrorException("Failed to refresh replication information", task.Exception);
}
RefreshReplicationInformationTask = null;
}));
}
}