public void RepairMidAnUpdate()
{
this.rtableWrapper = RTableWrapperForSampleRTableEntity.GetRTableWrapper(this.repTable);
// Not-Stable chain
// Reconfigure RTable so Head is WriteOnly.
View view = this.configurationService.GetTableView(this.repTable.TableName);
ReplicatedTableConfiguration config;
ReplicatedTableQuorumReadResult readStatus = this.configurationService.RetrieveConfiguration(out config);
Assert.IsTrue(readStatus.Code == ReplicatedTableQuorumReadCode.Success);
// Set Head as WriteOnly mode
ReplicatedTableConfigurationStore viewConfg = config.GetView(view.Name);
viewConfg.ReplicaChain[0].Status = ReplicaStatus.WriteOnly;
config.SetView(view.Name, viewConfg);
// Upload RTable config back
this.configurationService.UpdateConfiguration(config);
// Sanity: Replicated mode and chain Not-Stable
view = this.configurationService.GetTableView(this.repTable.TableName);
Assert.IsTrue(view != null && view.Chain.Count > 1, "Two replicas should be used.");
Assert.IsFalse(view.IsStable);
// Insert one entry
Console.WriteLine("Inserting entry ...");
string entityPartitionKey = "jobType-RepairMidAnUpdate-Replace";
string entityRowKey = "jobId-RepairMidAnUpdate-Replace";
var entry = new SampleRTableEntity(entityPartitionKey, entityRowKey, "message");
this.rtableWrapper.InsertRow(entry);
// 1 - Launch a RepairRow task in wait mode ...
bool triggerRepair = false;
bool repaireDone = false;
bool headAfterRepairWasLocked = false;
TableResult repairResult = null;
Task.Run(() =>
{
ReplicatedTable repairTable = new ReplicatedTable(this.repTable.TableName, this.configurationService);
while (!triggerRepair)
{
Thread.Sleep(5);
}
Console.WriteLine("RepairRow started ...");
repairResult = repairTable.RepairRow(entry.PartitionKey, entry.RowKey, null);
Console.WriteLine("RepairRow completed with HttpStatus={0}", repairResult == null ? "NULL" : repairResult.HttpStatusCode.ToString());
// Check the entry at the Head is still locked i.e. RepairRow was NOP
headAfterRepairWasLocked = HeadIsLocked(entry);
Console.WriteLine("Signal the commit to Head job");
repaireDone = true;
});
// 2 - Configure Mangler ...
string accountNameToTamper = this.rtableTestConfiguration.StorageInformation.AccountNames[0];
Console.WriteLine("RunHttpManglerBehaviorHelper(): accountNameToTamper={0}", accountNameToTamper);
ProxyBehavior[] behaviors = new[]
{
TamperBehaviors.TamperAllRequestsIf(
(session =>
{
Console.WriteLine("Delaying commit to the Head ... => signal RepairRow job");
// Let RepairRow task go through
triggerRepair = true;
int iter = 0;
while (!repaireDone)
{
// TODO: break the loop after couple of iteration ...
Thread.Sleep(100);
Console.WriteLine("Waiting on RepairRow to finish ({0}) ...", ++iter);
}
Console.WriteLine("Request a commit to the head");
}),
(session =>
{
// Commit on head i.e. a PUT with RowLock == false
if (session.hostname.Contains(accountNameToTamper + ".") &&
session.HTTPMethodIs("PUT") &&
session.GetRequestBodyAsString().Contains("\"_rtable_RowLock\":false"))
{
return(true);
}
return(false);
}))
};
using (new HttpMangler(false, behaviors))
{
Console.WriteLine("Updating entry ...");
entry = this.rtableWrapper.FindRow(entry.PartitionKey, entry.RowKey);
entry.Message = "updated message";
this.rtableWrapper.ReplaceRow(entry);
}
Assert.IsTrue(triggerRepair);
Assert.IsTrue(repairResult != null && repairResult.HttpStatusCode == (int)HttpStatusCode.OK, "Repair failed.");
Assert.IsTrue(repaireDone);
Assert.IsTrue(headAfterRepairWasLocked);
Console.WriteLine("DONE. Test passed.");
}