public override string UpdateDatabaseRecord(DatabaseRecord record, long etag)
{
var deletionInProgressStatus = HardDelete ? DeletionInProgressStatus.HardDelete
: DeletionInProgressStatus.SoftDelete;
if (record.DeletionInProgress == null)
{
record.DeletionInProgress = new Dictionary <string, DeletionInProgressStatus>();
}
if (FromNodes != null && FromNodes.Length > 0)
{
foreach (var node in FromNodes)
{
if (record.Topology.RelevantFor(node) == false)
{
DatabaseDoesNotExistException.ThrowWithMessage(record.DatabaseName, $"Request to delete database from node '{node}' failed.");
}
// rehabs will be removed only once the replication sent all the documents to the mentor
if (record.Topology.Rehabs.Contains(node) == false)
{
record.Topology.RemoveFromTopology(node);
}
if (UpdateReplicationFactor)
{
record.Topology.ReplicationFactor--;
}
if (ClusterNodes.Contains(node))
{
record.DeletionInProgress[node] = deletionInProgressStatus;
}
}
}
else
{
var allNodes = record.Topology.Members.Select(m => m)
.Concat(record.Topology.Promotables.Select(p => p))
.Concat(record.Topology.Rehabs.Select(r => r));
foreach (var node in allNodes)
{
if (ClusterNodes.Contains(node))
{
record.DeletionInProgress[node] = deletionInProgressStatus;
}
}
record.Topology = new DatabaseTopology
{
Stamp = record.Topology.Stamp,
ReplicationFactor = 0
};
}
record.Topology.Stamp.Index = etag;
return(null);
}
public Task CreateDatabase(RequestHandlerContext context)
{
var databaseName = context.RouteMatch.GetCapture();
// todo: think if we need to pass this check to the landlord
if (context.RavenServer.ServerStore.IsPassive())
{
throw new NodeIsPassiveException($"Can't perform actions on the database '{databaseName}' while the node is passive.");
}
if (context.RavenServer.ServerStore.IdleDatabases.TryGetValue(databaseName.Value, out var replicationsDictionary))
{
if (context.HttpContext.Request.Query.TryGetValue("from-outgoing", out var dbId) && context.HttpContext.Request.Query.TryGetValue("etag", out var replicationEtag))
{
var hasChanges = false;
var etag = Convert.ToInt64(replicationEtag);
if (replicationsDictionary.TryGetValue(dbId, out var storedEtag))
{
if (storedEtag < etag)
{
hasChanges = true;
}
}
else
{
if (etag > 0)
{
hasChanges = true;
}
}
if (hasChanges == false)
{
throw new DatabaseIdleException($"Replication attempt doesn't have changes to database {databaseName.Value}, which is currently idle.");
}
}
}
var databasesLandlord = context.RavenServer.ServerStore.DatabasesLandlord;
var database = databasesLandlord.TryGetOrCreateResourceStore(databaseName);
if (database.IsCompletedSuccessfully)
{
context.Database = database.Result;
if (context.Database == null)
{
DatabaseDoesNotExistException.Throw(databaseName.Value);
}
// ReSharper disable once PossibleNullReferenceException
if (context.Database.DatabaseShutdownCompleted.IsSet)
{
using (context.RavenServer.ServerStore.ContextPool.AllocateOperationContext(out TransactionOperationContext ctx))
using (ctx.OpenReadTransaction())
{
if (context.RavenServer.ServerStore.Cluster.DatabaseExists(ctx, databaseName.Value))
{
// db got disabled during loading
throw new DatabaseDisabledException($"Cannot complete the request, because {databaseName.Value} has been disabled.");
}
}
// db got deleted during loading
DatabaseDoesNotExistException.ThrowWithMessage(databaseName.Value, "Cannot complete the request.");
}
return(context.Database.DatabaseShutdown.IsCancellationRequested == false
? Task.CompletedTask
: UnlikelyWaitForDatabaseToUnload(context, context.Database, databasesLandlord, databaseName));
}
return(UnlikelyWaitForDatabaseToLoad(context, database, databasesLandlord, databaseName));
}
public override string UpdateDatabaseRecord(DatabaseRecord record, long etag)
{
var deletionInProgressStatus = HardDelete ? DeletionInProgressStatus.HardDelete
: DeletionInProgressStatus.SoftDelete;
if (MentorChangeVector != null)
{
if (record.DeletionInProgressChangeVector == null)
{
record.DeletionInProgressChangeVector = new Dictionary <string, string>();
}
foreach (var entry in MentorChangeVector)
{
var key = entry.Key;
var value = entry.Value;
record.DeletionInProgressChangeVector[key] = value;
}
}
if (record.DeletionInProgress == null)
{
record.DeletionInProgress = new Dictionary <string, DeletionInProgressStatus>();
}
if (FromNodes != null && FromNodes.Length > 0)
{
foreach (var node in FromNodes)
{
if (record.Topology.RelevantFor(node) == false)
{
DatabaseDoesNotExistException.ThrowWithMessage(record.DatabaseName, $"Request to delete database from node '{node}' failed.");
}
if (UpdateReplicationFactor)
{
record.Topology.RemoveFromTopology(node);
record.Topology.ReplicationFactor--;
}
if (ClusterNodes.Contains(node))
{
record.DeletionInProgress[node] = deletionInProgressStatus;
}
}
}
else
{
var allNodes = record.Topology.Members.Select(m => m)
.Concat(record.Topology.Promotables.Select(p => p))
.Concat(record.Topology.Rehabs.Select(r => r));
foreach (var node in allNodes)
{
if (ClusterNodes.Contains(node))
{
record.DeletionInProgress[node] = deletionInProgressStatus;
}
}
record.Topology.ReplicationFactor = 0;
record.Topology = new DatabaseTopology
{
Stamp = record.Topology.Stamp
};
}
return(null);
}
