public override bool OnStart()
{
DiagnosticsHelper.TraceInformation("MongoWorkerRole onstart called");
// For information on handling configuration changes
// see the MSDN topic at http://go.microsoft.com/fwlink/?LinkId=166357.
// Set the maximum number of concurrent connections
ServicePointManager.DefaultConnectionLimit = 12;
CloudStorageAccount.SetConfigurationSettingPublisher((configName, configSetter) =>
{
configSetter(RoleEnvironment.GetConfigurationSettingValue(configName));
});
RoleEnvironment.Changing += RoleEnvironmentChanging;
RoleEnvironment.Changed += RoleEnvironmentChanged;
replicaSetName = RoleEnvironment.GetConfigurationSettingValue(Constants.ReplicaSetNameSetting);
instanceId = ConnectionUtilities.ParseNodeInstanceId(RoleEnvironment.CurrentRoleInstance.Id);
DiagnosticsHelper.TraceInformation("ReplicaSetName={0}, InstanceId={1}",
replicaSetName, instanceId);
SetHostAndPort();
DiagnosticsHelper.TraceInformation("Obtained host={0}, port={1}", mongodHost, mongodPort);
StartMongoD();
DiagnosticsHelper.TraceInformation("Mongod process started");
// Need to ensure MongoD is up here
DatabaseHelper.EnsureMongodIsListening(replicaSetName, instanceId, mongodPort);
if ((instanceId == 0) && !DatabaseHelper.IsReplicaSetInitialized(mongodPort))
{
try
{
DatabaseHelper.RunInitializeCommandLocally(replicaSetName, mongodPort);
DiagnosticsHelper.TraceInformation("RSInit issued successfully");
}
catch (MongoCommandException e)
{
//Ignore exceptions caught on rs init for now
DiagnosticsHelper.TraceWarning(
"Exception {0} on RSInit with {1}",
e.Message, e.StackTrace);
}
}
DiagnosticsHelper.TraceInformation("Done with OnStart");
return(true);
}
private static AvailableNodes GetAvailableNodes(string rsName)
{
var nodes = new AvailableNodes();
foreach (var instance in RoleEnvironment.Roles[Constants.MongoDBWorkerRoleName].Instances)
{
nodes.Add(new NodeAlias()
{
Alias = ConnectionUtilities.GetNodeAlias(rsName, ConnectionUtilities.ParseNodeInstanceId(instance.Id)),
IpAddress = instance.InstanceEndpoints[Constants.MongodPortSetting].IPEndpoint.Address.ToString()
});
}
return(nodes);
}