public void RunSynchronously()
{
if (!store.Configuration.RunDocumentMigrationsOnStartup)
return;
var migrator = new DocumentMigrator(store.Configuration);
foreach (var table in configuration.Tables.Values.OfType<DocumentTable>())
{
var baseDesign = configuration.DocumentDesigns.First(x => x.Table.Name == table.Name);
while (true)
{
QueryStats stats;
var rows = store
.Query(table, out stats,
@where: "AwaitsReprojection = @AwaitsReprojection or Version < @version",
@select: "Id, AwaitsReprojection, Version, Discriminator, Etag",
take: 100,
@orderby: "newid()",
parameters: new {AwaitsReprojection = true, version = configuration.ConfiguredVersion})
.ToList();
if (stats.TotalResults == 0) break;
logger.Information("Found {0} document that must be migrated.", stats.TotalResults);
foreach (var row in rows)
{
var discriminator = ((string)row[table.DiscriminatorColumn]).Trim();
DocumentDesign concreteDesign;
if (!baseDesign.DecendentsAndSelf.TryGetValue(discriminator, out concreteDesign))
{
throw new InvalidOperationException(
string.Format("Discriminator '{0}' was not found in configuration.", discriminator));
}
var id = (string)row[table.IdColumn];
var currentDocumentVersion = (int)row[table.VersionColumn];
var shouldUpdate = false;
if ((bool)row[table.AwaitsReprojectionColumn])
{
shouldUpdate = true;
logger.Information("Reprojection document {0}/{1}.",
concreteDesign.DocumentType.FullName, id, currentDocumentVersion, configuration.ConfiguredVersion);
}
if (migrator.ApplicableCommands(concreteDesign, currentDocumentVersion).Any())
{
shouldUpdate = true;
}
if (shouldUpdate)
{
try
{
var rowWithDocument = store.Get(table, id);
var document = (byte[]) rowWithDocument[table.DocumentColumn];
var etag = (Guid)rowWithDocument[table.EtagColumn];
var entity = migrator.DeserializeAndMigrate(concreteDesign, id, document, currentDocumentVersion);
var projections = concreteDesign.Projections.ToDictionary(x => x.Key, x => x.Value.Projector(entity));
store.Execute(new BackupCommand(
new UpdateCommand(table, id, etag, projections, false),
store.Configuration.BackupWriter, concreteDesign, id, currentDocumentVersion, document));
}
catch (ConcurrencyException) {}
catch (Exception exception)
{
logger.Error(exception, "Error while migrating document of type {0} with id {1}.", concreteDesign.DocumentType.FullName, id);
Thread.Sleep(100);
}
}
else
{
logger.Information("Document did not change.");
var projection = new Dictionary<string, object>
{
{table.VersionColumn, configuration.ConfiguredVersion}
};
store.Update(table, id, (Guid)row[table.EtagColumn], projection);
}
}
}
}
}
public Task Run(IDocumentStore store)
{
var logger = store.Configuration.Logger;
var configuration = store.Configuration;
if (!configuration.RunDocumentMigrationsOnStartup)
return Task.FromResult(0);
return Task.Factory.StartNew(() =>
{
var migrator = new DocumentMigrator(configuration);
foreach (var table in configuration.Tables.Values.OfType<DocumentTable>())
{
var baseDesign = configuration.TryGetDesignByTablename(table.Name);
if (baseDesign == null)
{
throw new InvalidOperationException($"Design not found for table '{table.Name}'");
}
while (true)
{
QueryStats stats;
var rows = store
.Query(table, out stats,
@where: "AwaitsReprojection = @AwaitsReprojection or Version < @version",
@select: "Id, AwaitsReprojection, Version, Discriminator, Etag",
take: 100,
@orderby: "newid()",
parameters: new { AwaitsReprojection = true, version = configuration.ConfiguredVersion })
.ToList();
if (stats.TotalResults == 0) break;
logger.Information("Found {0} document that must be migrated.", stats.TotalResults);
foreach (var row in rows)
{
var key = (string)row[table.IdColumn];
var currentDocumentVersion = (int)row[table.VersionColumn];
var discriminator = ((string)row[table.DiscriminatorColumn]).Trim();
var concreteDesign = store.Configuration.GetOrCreateDesignByDiscriminator(baseDesign, discriminator);
var shouldUpdate = false;
if ((bool)row[table.AwaitsReprojectionColumn])
{
shouldUpdate = true;
logger.Information("Reprojection document {0}/{1}.",
concreteDesign.DocumentType.FullName, key, currentDocumentVersion, configuration.ConfiguredVersion);
}
if (migrator.ApplicableCommands(concreteDesign, currentDocumentVersion).Any())
{
shouldUpdate = true;
}
if (shouldUpdate)
{
try
{
using (var session = new DocumentSession(store))
{
session.Load(concreteDesign.DocumentType, key);
session.SaveChanges(lastWriteWins: false, forceWriteUnchangedDocument: true);
}
}
catch (ConcurrencyException) { }
catch (Exception exception)
{
logger.Error(exception, "Error while migrating document of type {0} with id {1}.", concreteDesign.DocumentType.FullName, key);
Thread.Sleep(100);
}
}
else
{
logger.Information("Document did not change.");
var projection = new Dictionary<string, object>
{
{table.VersionColumn, configuration.ConfiguredVersion}
};
store.Update(table, key, (Guid)row[table.EtagColumn], projection);
}
}
}
}
}, TaskCreationOptions.LongRunning);
}
public Task Run(IDocumentStore store)
{
var logger = store.Configuration.Logger;
var configuration = store.Configuration;
if (!configuration.RunDocumentMigrationsOnStartup)
{
return(Task.FromResult(0));
}
return(Task.Factory.StartNew(() =>
{
var migrator = new DocumentMigrator(configuration);
foreach (var table in configuration.Tables.Values.OfType <DocumentTable>())
{
var baseDesign = configuration.DocumentDesigns.First(x => x.Table.Name == table.Name);
while (true)
{
QueryStats stats;
var rows = store
.Query(table, out stats,
@where: "AwaitsReprojection = @AwaitsReprojection or Version < @version",
@select: "Id, AwaitsReprojection, Version, Discriminator, Etag",
take: 100,
@orderby: "newid()",
parameters: new { AwaitsReprojection = true, version = configuration.ConfiguredVersion })
.ToList();
if (stats.TotalResults == 0)
{
break;
}
logger.Information("Found {0} document that must be migrated.", stats.TotalResults);
foreach (var row in rows)
{
var key = (string)row[table.IdColumn];
var currentDocumentVersion = (int)row[table.VersionColumn];
var discriminator = ((string)row[table.DiscriminatorColumn]).Trim();
var concreteDesign = store.Configuration.GetOrCreateConcreteDesign(baseDesign, discriminator, key);
var shouldUpdate = false;
if ((bool)row[table.AwaitsReprojectionColumn])
{
shouldUpdate = true;
logger.Information("Reprojection document {0}/{1}.",
concreteDesign.DocumentType.FullName, key, currentDocumentVersion, configuration.ConfiguredVersion);
}
if (migrator.ApplicableCommands(concreteDesign, currentDocumentVersion).Any())
{
shouldUpdate = true;
}
if (shouldUpdate)
{
try
{
using (var session = new DocumentSession(store))
{
session.Load(concreteDesign, key);
session.SaveChanges(lastWriteWins: false, forceWriteUnchangedDocument: true);
}
}
catch (ConcurrencyException) { }
catch (Exception exception)
{
logger.Error(exception, "Error while migrating document of type {0} with id {1}.", concreteDesign.DocumentType.FullName, key);
Thread.Sleep(100);
}
}
else
{
logger.Information("Document did not change.");
var projection = new Dictionary <string, object>
{
{ table.VersionColumn, configuration.ConfiguredVersion }
};
store.Update(table, key, (Guid)row[table.EtagColumn], projection);
}
}
}
}
}, TaskCreationOptions.LongRunning));
}
