private static async Task<Etag> ExportDocuments(DocumentStore exportStore, DocumentStore importStore, SmugglerDatabaseOptions databaseOptions, ServerSupportedFeatures exportStoreSupportedFeatures, int exportBatchSize, int importBatchSize)
{
var now = SystemTime.UtcNow;
var lastEtag = databaseOptions.StartDocsEtag;
var totalCount = 0;
var lastReport = SystemTime.UtcNow;
var reportInterval = TimeSpan.FromSeconds(2);
ShowProgress("Exporting Documents");
var bulkInsertOperation = importStore.BulkInsert(null, new BulkInsertOptions
{
BatchSize = importBatchSize,
OverwriteExisting = true,
});
bulkInsertOperation.Report += text => ShowProgress(text);
var jintHelper = new SmugglerJintHelper();
jintHelper.Initialize(databaseOptions);
var isLastLoop = false;
try
{
while (true)
{
try
{
var beforeCount = totalCount;
if (exportStoreSupportedFeatures.IsDocsStreamingSupported)
{
ShowProgress("Streaming documents from " + lastEtag);
var res = await TransferStreamedDocuments(exportStore,
databaseOptions,
now,
jintHelper,
bulkInsertOperation,
reportInterval,
totalCount,
lastEtag,
lastReport);
totalCount = res.Item1;
lastEtag = res.Item2;
lastReport = res.Item3;
}
else
{
int retries = RetriesCount;
var originalRequestTimeout = exportStore.JsonRequestFactory.RequestTimeout;
var timeout = databaseOptions.Timeout.Seconds;
if (timeout < 30)
timeout = 30;
try
{
var operationMetadata = new OperationMetadata(exportStore.Url, exportStore.Credentials, exportStore.ApiKey);
while (true)
{
try
{
ShowProgress("Get documents from " + lastEtag);
var res = await TransferDocumentsWithoutStreaming(exportStore,
databaseOptions,
exportBatchSize,
operationMetadata,
now,
bulkInsertOperation,
reportInterval,
totalCount,
lastEtag,
lastReport);
totalCount = res.Item1;
lastEtag = res.Item2;
lastReport = res.Item3;
break;
}
catch (Exception e)
{
if (retries-- == 0 && databaseOptions.IgnoreErrorsAndContinue)
return Etag.Empty;
if (databaseOptions.IgnoreErrorsAndContinue == false)
throw;
exportStore.JsonRequestFactory.RequestTimeout = TimeSpan.FromSeconds(timeout *= 2);
importStore.JsonRequestFactory.RequestTimeout = TimeSpan.FromSeconds(timeout *= 2);
ShowProgress("Error reading from database, remaining attempts {0}, will retry. Error: {1}", retries, e);
}
}
}
finally
{
exportStore.JsonRequestFactory.RequestTimeout = originalRequestTimeout;
}
}
// In a case that we filter all the results, the formEtag hasn't updaed to the latest,
// but we still need to continue until we finish all the docs.
var databaseStatistics = await exportStore.AsyncDatabaseCommands.GetStatisticsAsync();
var lastEtagComparable = new ComparableByteArray(lastEtag);
if (lastEtagComparable.CompareTo(databaseStatistics.LastDocEtag) <= 0 && !isLastLoop)
{
if (totalCount == beforeCount)
{
isLastLoop = true;
ShowProgress("Got no new results , trying one more loop from: {0}", lastEtag);
}
else
ShowProgress("Finished streaming batch, but haven't reached an end (last reached etag = {0})", lastEtag);
continue;
}
// Load HiLo documents for selected collections
databaseOptions.Filters.ForEach(filter =>
{
if (string.Equals(filter.Path, "@metadata.Raven-Entity-Name", StringComparison.OrdinalIgnoreCase))
{
filter.Values.ForEach(collectionName =>
{
var doc = exportStore.DatabaseCommands.Get("Raven/Hilo/" + collectionName);
if (doc == null)
return;
doc.Metadata["@id"] = doc.Key;
bulkInsertOperation.Store(doc.DataAsJson, doc.Metadata, doc.Key);
totalCount++;
});
}
});
ShowProgress("Done with reading documents, total: {0}, lastEtag: {1}", totalCount, lastEtag);
return lastEtag;
}
catch (Exception e)
{
ShowProgress("Got Exception during smuggler between. Exception: {0}. ", e.Message);
ShowProgress("Done with reading documents, total: {0}, lastEtag: {1}", totalCount, lastEtag);
throw new SmugglerExportException(e.Message, e)
{
LastEtag = lastEtag,
};
}
}
}
finally
{
bulkInsertOperation.Dispose();
}
}
private static async Task<Tuple<int, Etag, DateTime>> TransferStreamedDocuments(DocumentStore exportStore,
SmugglerDatabaseOptions databaseOptions,
DateTime now,
SmugglerJintHelper jintHelper,
BulkInsertOperation bulkInsertOperation,
TimeSpan reportInterval,
int totalCount,
string fromEtag,
DateTime lastReport)
{
Etag lastReadEtag = fromEtag;
using (var documentsEnumerator = await exportStore.AsyncDatabaseCommands.StreamDocsAsync(fromEtag))
{
while (await documentsEnumerator.MoveNextAsync())
{
var document = documentsEnumerator.Current;
var metadata = document.Value<RavenJObject>("@metadata");
var id = metadata.Value<string>("@id");
var etag = Etag.Parse(metadata.Value<string>("@etag"));
lastReadEtag = etag;
if (!databaseOptions.MatchFilters(document))
continue;
if (databaseOptions.ShouldExcludeExpired && databaseOptions.ExcludeExpired(document, now))
continue;
if (databaseOptions.StripReplicationInformation)
document["@metadata"] = StripReplicationInformationFromMetadata(document["@metadata"] as RavenJObject);
if (databaseOptions.ShouldDisableVersioningBundle)
document["@metadata"] = SmugglerHelper.DisableVersioning(document["@metadata"] as RavenJObject);
document["@metadata"] = SmugglerHelper.HandleConflictDocuments(document["@metadata"] as RavenJObject);
if (!string.IsNullOrEmpty(databaseOptions.TransformScript))
{
document = jintHelper.Transform(databaseOptions.TransformScript, document);
if (document == null)
continue;
metadata = document.Value<RavenJObject>("@metadata");
}
document.Remove("@metadata");
try
{
bulkInsertOperation.Store(document, metadata, id);
}
catch (Exception e)
{
if (databaseOptions.IgnoreErrorsAndContinue == false)
throw;
ShowProgress("IMPORT of a document {0} failed. Message: {1}", document, e.Message);
}
totalCount++;
if (totalCount%1000 == 0 || SystemTime.UtcNow - lastReport > reportInterval)
{
ShowProgress("Exported {0} documents", totalCount);
lastReport = SystemTime.UtcNow;
}
}
}
return Tuple.Create(totalCount, lastReadEtag, lastReport);
}
private static async Task<Etag> ExportDocuments(DocumentStore exportStore, DocumentStore importStore, SmugglerDatabaseOptions databaseOptions, ServerSupportedFeatures exportStoreSupportedFeatures, int exportBatchSize, int importBatchSize)
{
var now = SystemTime.UtcNow;
string lastEtag = databaseOptions.StartDocsEtag;
var totalCount = 0;
var lastReport = SystemTime.UtcNow;
var reportInterval = TimeSpan.FromSeconds(2);
ShowProgress("Exporting Documents");
var bulkInsertOperation = importStore.BulkInsert(null, new BulkInsertOptions
{
BatchSize = importBatchSize,
OverwriteExisting = true,
});
bulkInsertOperation.Report += text => ShowProgress(text);
var jintHelper = new SmugglerJintHelper();
jintHelper.Initialize(databaseOptions);
try
{
while (true)
{
if (exportStoreSupportedFeatures.IsDocsStreamingSupported)
{
ShowProgress("Streaming documents from " + lastEtag);
using (var documentsEnumerator = await exportStore.AsyncDatabaseCommands.StreamDocsAsync(lastEtag))
{
while (await documentsEnumerator.MoveNextAsync())
{
var document = documentsEnumerator.Current;
var metadata = document.Value<RavenJObject>("@metadata");
var id = metadata.Value<string>("@id");
var etag = Etag.Parse(metadata.Value<string>("@etag"));
lastEtag = etag;
if (!databaseOptions.MatchFilters(document))
continue;
if (databaseOptions.ShouldExcludeExpired && databaseOptions.ExcludeExpired(document, now))
continue;
if (databaseOptions.StripReplicationInformation)
document["@metadata"] = StripReplicationInformationFromMetadata(document["@metadata"] as RavenJObject);
if(databaseOptions.ShouldDisableVersioningBundle)
document["@metadata"] = SmugglerHelper.DisableVersioning(document["@metadata"] as RavenJObject);
document["@metadata"] = SmugglerHelper.HandleConflictDocuments(document["@metadata"] as RavenJObject);
if (!string.IsNullOrEmpty(databaseOptions.TransformScript))
{
document = jintHelper.Transform(databaseOptions.TransformScript, document);
if(document == null)
continue;
metadata = document.Value<RavenJObject>("@metadata");
}
document.Remove("@metadata");
bulkInsertOperation.Store(document, metadata, id);
totalCount++;
if (totalCount%1000 == 0 || SystemTime.UtcNow - lastReport > reportInterval)
{
ShowProgress("Exported {0} documents", totalCount);
lastReport = SystemTime.UtcNow;
}
}
}
}
else
{
int retries = RetriesCount;
var originalRequestTimeout = exportStore.JsonRequestFactory.RequestTimeout;
var timeout = databaseOptions.Timeout.Seconds;
if (timeout < 30)
timeout = 30;
try
{
var operationMetadata = new OperationMetadata(exportStore.Url, exportStore.Credentials, exportStore.ApiKey);
while (true)
{
try
{
ShowProgress("Get documents from " + lastEtag);
var documents = await ((AsyncServerClient)exportStore.AsyncDatabaseCommands).GetDocumentsInternalAsync(null, lastEtag, exportBatchSize, operationMetadata);
foreach (RavenJObject document in documents)
{
var metadata = document.Value<RavenJObject>("@metadata");
var id = metadata.Value<string>("@id");
var etag = Etag.Parse(metadata.Value<string>("@etag"));
lastEtag = etag;
if (!databaseOptions.MatchFilters(document))
continue;
if (databaseOptions.ShouldExcludeExpired && databaseOptions.ExcludeExpired(document, now))
continue;
if (databaseOptions.StripReplicationInformation)
document["@metadata"] = StripReplicationInformationFromMetadata(document["@metadata"] as RavenJObject);
if (databaseOptions.ShouldDisableVersioningBundle)
document["@metadata"] = SmugglerHelper.DisableVersioning(document["@metadata"] as RavenJObject);
document["@metadata"] = SmugglerHelper.HandleConflictDocuments(document["@metadata"] as RavenJObject);
document.Remove("@metadata");
metadata.Remove("@id");
metadata.Remove("@etag");
bulkInsertOperation.Store(document, metadata, id);
totalCount++;
if (totalCount%1000 == 0 || SystemTime.UtcNow - lastReport > reportInterval)
{
ShowProgress("Exported {0} documents", totalCount);
lastReport = SystemTime.UtcNow;
}
}
break;
}
catch (Exception e)
{
if (retries-- == 0)
throw;
exportStore.JsonRequestFactory.RequestTimeout = TimeSpan.FromSeconds(timeout *= 2);
importStore.JsonRequestFactory.RequestTimeout = TimeSpan.FromSeconds(timeout *= 2);
ShowProgress("Error reading from database, remaining attempts {0}, will retry. Error: {1}", retries, e);
}
}
}
finally
{
exportStore.JsonRequestFactory.RequestTimeout = originalRequestTimeout;
}
}
// In a case that we filter all the results, the formEtag hasn't updaed to the latest,
// but we still need to continue until we finish all the docs.
var databaseStatistics = await exportStore.AsyncDatabaseCommands.GetStatisticsAsync();
var lastEtagComparable = new ComparableByteArray(lastEtag);
if (lastEtagComparable.CompareTo(databaseStatistics.LastDocEtag) < 0)
{
lastEtag = EtagUtil.Increment(lastEtag, exportBatchSize);
ShowProgress("Got no results but didn't get to the last doc etag, trying from: {0}", lastEtag);
continue;
}
ShowProgress("Done with reading documents, total: {0}", totalCount);
return lastEtag;
}
}
finally
{
bulkInsertOperation.Dispose();
}
}