private void CleanUpDB(DocumentStore documentStore)
{
// This can fail the very first time the application runs as it will not yet have created the necessary schema objects,
// so we can just quietly move on
try
{
var docSession = documentStore.OpenSession();
var configInfo = docSession.Load<Config>("DinnerParty/Config");
if(configInfo == null)
{
configInfo = new Config();
configInfo.Id = "DinnerParty/Config";
configInfo.LastTruncateDate = DateTime.Now.AddHours(-48);
//No need to delete data if config doesnt exist but setup ready for next time
docSession.Store(configInfo);
docSession.SaveChanges();
return;
}
if((DateTime.Now - configInfo.LastTruncateDate).TotalHours < 24)
return;
long docCount = 0, dbSize = 0;
using(var cmd = docSession.Connection.CreateCommand())
{
var dinnerTableName = documentStore.Schema.MappingFor(typeof(Dinner)).Table.QualifiedName;
cmd.CommandText = $"SELECT COUNT(*) FROM {dinnerTableName}";
docCount = (long)cmd.ExecuteScalar();
}
using(var cmd = docSession.Connection.CreateCommand())
{
var dinnerPartyDbName = docSession.Connection.Database;
cmd.CommandText = $"SELECT pg_database_size('{dinnerPartyDbName}')";
dbSize = (long)cmd.ExecuteScalar();
configInfo.LastTruncateDate = DateTime.Now;
docSession.SaveChanges();
}
//If database size >15mb or 1000 documents delete documents older than a week
if(docCount > 1000 || dbSize > 15000000) //its actually 14.3mb but goood enough
{
docSession.DeleteWhere<Dinner>(dp => dp.LastModified < DateTime.Now.AddDays(-7));
}
}
catch(Exception ex)
{
LogManager.GetCurrentClassLogger().Warn(ex, "Failed to clean up database");
}
}
private void CleanUpDB(DocumentStore documentStore)
{
var docSession = documentStore.OpenSession();
var configInfo = docSession.Load<Config>("DinnerParty/Config");
if (configInfo == null)
{
configInfo = new Config();
configInfo.Id = "DinnerParty/Config";
configInfo.LastTruncateDate = DateTime.Now.AddHours(-48); //No need to delete data if config doesnt exist but setup ready for next time
docSession.Store(configInfo);
docSession.SaveChanges();
return;
}
else
{
if ((DateTime.Now - configInfo.LastTruncateDate).TotalHours < 24)
return;
configInfo.LastTruncateDate = DateTime.Now;
docSession.SaveChanges();
//If database size >15mb or 1000 documents delete documents older than a week
#if DEBUG
var jsonData =
documentStore.JsonRequestFactory.CreateHttpJsonRequest(null, "http://localhost:8080/database/size", "GET", documentStore.Credentials, documentStore.Conventions).ReadResponseJson();
#else
var jsonData =
documentStore.JsonRequestFactory.CreateHttpJsonRequest(null, "https://aeo.ravenhq.com/databases/DinnerParty-DinnerPartyDB/database/size", "GET", documentStore.Credentials, documentStore.Conventions).ReadResponseJson();
#endif
int dbSize = int.Parse(jsonData.SelectToken("DatabaseSize").ToString());
long docCount = documentStore.DatabaseCommands.GetStatistics().CountOfDocuments;
if (docCount > 1000 || dbSize > 15000000) //its actually 14.3mb but goood enough
{
documentStore.DatabaseCommands.DeleteByIndex("Raven/DocumentsByEntityName",
new IndexQuery
{
Query = docSession.Advanced.LuceneQuery<object>()
.WhereEquals("Tag", "Dinners")
.AndAlso()
.WhereLessThan("LastModified", DateTime.Now.AddDays(-7)).ToString()
},
false);
}
}
}
