public Task GetClusterTopology()
{
using (ServerStore.ContextPool.AllocateOperationContext(out TransactionOperationContext context))
using (context.OpenReadTransaction())
{
var topology = ServerStore.GetClusterTopology(context);
var nodeTag = ServerStore.NodeTag;
if (topology.Members.Count == 0)
{
var tag = ServerStore.NodeTag ?? "A";
var serverUrl = ServerStore.NodeHttpServerUrl;
topology = new ClusterTopology(
"dummy",
new Dictionary <string, string>
{
[tag] = serverUrl
},
new Dictionary <string, string>(),
new Dictionary <string, string>(),
tag
);
nodeTag = tag;
}
HttpContext.Response.StatusCode = (int)HttpStatusCode.OK;
using (var writer = new BlittableJsonTextWriter(context, ResponseBodyStream()))
{
var loadLicenseLimits = ServerStore.LoadLicenseLimits();
var nodeLicenseDetails = loadLicenseLimits == null ?
null : DynamicJsonValue.Convert(loadLicenseLimits.NodeLicenseDetails);
var json = new DynamicJsonValue
{
["Topology"] = topology.ToSortedJson(),
["Leader"] = ServerStore.LeaderTag,
["CurrentState"] = ServerStore.CurrentRachisState,
["NodeTag"] = nodeTag,
["CurrentTerm"] = ServerStore.Engine.CurrentTerm,
["NodeLicenseDetails"] = nodeLicenseDetails,
[nameof(ServerStore.Engine.LastStateChangeReason)] = ServerStore.LastStateChangeReason()
};
var clusterErrors = ServerStore.GetClusterErrors();
if (clusterErrors.Count > 0)
{
json["Errors"] = clusterErrors;
}
var nodesStatues = ServerStore.GetNodesStatuses();
json["Status"] = DynamicJsonValue.Convert(nodesStatues);
context.Write(writer, json);
writer.Flush();
}
}
return(Task.CompletedTask);
}
private void WriteDatabaseInfo(string databaseName, BlittableJsonReaderObject dbRecordBlittable,
TransactionOperationContext context, AbstractBlittableJsonTextWriter writer)
{
try
{
var online = ServerStore.DatabasesLandlord.DatabasesCache.TryGetValue(databaseName, out Task <DocumentDatabase> dbTask) &&
dbTask != null &&
dbTask.IsCompleted;
// Check for exceptions
if (dbTask != null && dbTask.IsFaulted)
{
var exception = dbTask.Exception.ExtractSingleInnerException();
WriteFaultedDatabaseInfo(databaseName, exception, context, writer);
return;
}
var dbRecord = JsonDeserializationCluster.DatabaseRecord(dbRecordBlittable);
var db = online ? dbTask.Result : null;
var indexingStatus = db?.IndexStore?.Status ?? IndexRunningStatus.Running;
// Looking for disabled indexing flag inside the database settings for offline database status
if (dbRecord.Settings.TryGetValue(RavenConfiguration.GetKey(x => x.Indexing.Disabled), out var val) && bool.TryParse(val, out var indexingDisabled) && indexingDisabled)
{
indexingStatus = IndexRunningStatus.Disabled;
}
var disabled = dbRecord.Disabled;
var topology = dbRecord.Topology;
var clusterTopology = ServerStore.GetClusterTopology(context);
clusterTopology.ReplaceCurrentNodeUrlWithClientRequestedNodeUrlIfNecessary(ServerStore, HttpContext);
var studioEnvironment = StudioConfiguration.StudioEnvironment.None;
if (dbRecord.Studio != null && !dbRecord.Studio.Disabled)
{
studioEnvironment = dbRecord.Studio.Environment;
}
var nodesTopology = new NodesTopology();
var statuses = ServerStore.GetNodesStatuses();
if (topology != null)
{
foreach (var member in topology.Members)
{
var url = clusterTopology.GetUrlFromTag(member);
var node = new InternalReplication
{
Database = databaseName,
NodeTag = member,
Url = url
};
nodesTopology.Members.Add(GetNodeId(node));
SetNodeStatus(topology, member, nodesTopology, statuses);
}
foreach (var promotable in topology.Promotables)
{
topology.PredefinedMentors.TryGetValue(promotable, out var mentorCandidate);
var node = GetNode(databaseName, clusterTopology, promotable, mentorCandidate, out var promotableTask);
var mentor = topology.WhoseTaskIsIt(ServerStore.Engine.CurrentState, promotableTask, null);
nodesTopology.Promotables.Add(GetNodeId(node, mentor));
SetNodeStatus(topology, promotable, nodesTopology, statuses);
}
foreach (var rehab in topology.Rehabs)
{
var node = GetNode(databaseName, clusterTopology, rehab, null, out var promotableTask);
var mentor = topology.WhoseTaskIsIt(ServerStore.Engine.CurrentState, promotableTask, null);
nodesTopology.Rehabs.Add(GetNodeId(node, mentor));
SetNodeStatus(topology, rehab, nodesTopology, statuses);
}
}
if (online == false)
{
// if state of database is found in the cache we can continue
if (ServerStore.DatabaseInfoCache.TryGet(databaseName, databaseInfoJson =>
{
databaseInfoJson.Modifications = new DynamicJsonValue(databaseInfoJson)
{
[nameof(DatabaseInfo.Disabled)] = disabled,
[nameof(DatabaseInfo.IndexingStatus)] = indexingStatus.ToString(),
[nameof(DatabaseInfo.NodesTopology)] = nodesTopology.ToJson(),
[nameof(DatabaseInfo.DeletionInProgress)] = DynamicJsonValue.Convert(dbRecord.DeletionInProgress),
[nameof(DatabaseInfo.Environment)] = studioEnvironment
};
context.Write(writer, databaseInfoJson);
}))
{
return;
}
// we won't find it if it is a new database or after a dirty shutdown,
// so just report empty values then
}
var size = db?.GetSizeOnDisk() ?? (new Size(0), new Size(0));
var databaseInfo = new DatabaseInfo
{
Name = databaseName,
Disabled = disabled,
TotalSize = size.Data,
TempBuffersSize = size.TempBuffers,
IsAdmin = true,
IsEncrypted = dbRecord.Encrypted,
UpTime = online ? (TimeSpan?)GetUptime(db) : null,
BackupInfo = GetBackupInfo(db),
Alerts = db?.NotificationCenter.GetAlertCount() ?? 0,
RejectClients = false,
LoadError = null,
IndexingErrors = db?.IndexStore?.GetIndexes()?.Sum(index => index.GetErrorCount()) ?? 0,
DocumentsCount = db?.DocumentsStorage.GetNumberOfDocuments() ?? 0,
HasRevisionsConfiguration = db?.DocumentsStorage.RevisionsStorage.Configuration != null,
HasExpirationConfiguration = db?.ExpiredDocumentsCleaner != null,
IndexesCount = db?.IndexStore?.GetIndexes()?.Count() ?? 0,
IndexingStatus = indexingStatus,
Environment = studioEnvironment,
NodesTopology = nodesTopology,
ReplicationFactor = topology?.ReplicationFactor ?? -1,
DynamicNodesDistribution = topology?.DynamicNodesDistribution ?? false,
DeletionInProgress = dbRecord.DeletionInProgress
};
var doc = databaseInfo.ToJson();
context.Write(writer, doc);
}
catch (Exception e)
{
if (Logger.IsInfoEnabled)
{
Logger.Info($"Failed to get database info for: {databaseName}", e);
}
WriteFaultedDatabaseInfo(databaseName, e, context, writer);
}
}
public Task GetClusterTopology()
{
using (ServerStore.ContextPool.AllocateOperationContext(out TransactionOperationContext context))
using (context.OpenReadTransaction())
{
var topology = ServerStore.GetClusterTopology(context);
var nodeTag = ServerStore.NodeTag;
if (topology.AllNodes.Count == 0)
{
var tag = ServerStore.NodeTag ?? "A";
var serverUrl = ServerStore.GetNodeHttpServerUrl(HttpContext.Request.GetClientRequestedNodeUrl());
topology = new ClusterTopology(
topology.TopologyId ?? "dummy",
new Dictionary <string, string>
{
[tag] = serverUrl
},
new Dictionary <string, string>(),
new Dictionary <string, string>(),
tag,
-1L
);
nodeTag = tag;
}
else
{
var isClientIndependent = GetBoolValueQueryString("clientIndependent", false) ?? false;
if (isClientIndependent == false && HttpContext.Items.TryGetValue(nameof(LocalEndpointClient.DebugPackage), out var _) == false)
{
topology.ReplaceCurrentNodeUrlWithClientRequestedNodeUrlIfNecessary(ServerStore, HttpContext);
}
}
HttpContext.Response.StatusCode = (int)HttpStatusCode.OK;
using (var writer = new BlittableJsonTextWriter(context, ResponseBodyStream()))
{
var loadLicenseLimits = ServerStore.LoadLicenseLimits();
var nodeLicenseDetails = loadLicenseLimits == null ?
null : DynamicJsonValue.Convert(loadLicenseLimits.NodeLicenseDetails);
var json = new DynamicJsonValue
{
[nameof(ClusterTopologyResponse.Topology)] = topology.ToSortedJson(),
[nameof(ClusterTopologyResponse.Etag)] = topology.Etag,
[nameof(ClusterTopologyResponse.Leader)] = ServerStore.LeaderTag,
["LeaderShipDuration"] = ServerStore.Engine.CurrentLeader?.LeaderShipDuration,
["CurrentState"] = ServerStore.CurrentRachisState,
[nameof(ClusterTopologyResponse.NodeTag)] = nodeTag,
["CurrentTerm"] = ServerStore.Engine.CurrentTerm,
["NodeLicenseDetails"] = nodeLicenseDetails,
[nameof(ServerStore.Engine.LastStateChangeReason)] = ServerStore.LastStateChangeReason()
};
var clusterErrors = ServerStore.GetClusterErrors();
if (clusterErrors.Count > 0)
{
json["Errors"] = clusterErrors;
}
var nodesStatues = ServerStore.GetNodesStatuses();
json["Status"] = DynamicJsonValue.Convert(nodesStatues);
context.Write(writer, json);
writer.Flush();
}
}
return(Task.CompletedTask);
}