/// <summary>
/// 构造函数
/// </summary>
/// <param name="serviceProvider"></param>
public EFCoreShardingBootstrapper(IServiceProvider serviceProvider)
{
_serviceProvider = serviceProvider;
_shardingOptions = serviceProvider.GetService <IOptions <EFCoreShardingOptions> >().Value;
Cache.ServiceProvider = serviceProvider;
}
public LogicDeleteDbAccessor(IDbAccessor db, EFCoreShardingOptions shardingOptions)
{
FullDbAccessor = db;
_logicDelete = shardingOptions.LogicDelete;
_deletedField = shardingOptions.DeletedField;
_keyField = shardingOptions.KeyField;
}
public static EFCoreShardingOptions BuildOption(this IOptionsMonitor <EFCoreShardingOptions> optionsSnapshot, string optionName)
{
if (optionName.IsNullOrEmpty())
{
return(optionsSnapshot.CurrentValue);
}
else
{
var selfOption = optionsSnapshot.Get(optionName).DeepClone();
var defaultOption = new EFCoreShardingOptions();
var globalOption = optionsSnapshot.CurrentValue;
foreach (var aProperty in typeof(EFCoreShardingOptions).GetProperties())
{
var selfValue = aProperty.GetValue(selfOption);
var defaultValue = aProperty.GetValue(defaultOption);
var globalValue = aProperty.GetValue(globalOption);
var value = Equals(selfValue, defaultValue) ? globalValue : selfValue;
aProperty.SetValue(selfOption, value);
}
return(selfOption);
}
}
public IDbAccessor GetDbAccessor(DbContextParamters dbContextParamters, string optionName = null)
{
EFCoreShardingOptions eFCoreShardingOptions = _optionsMonitor.BuildOption(optionName);
var dbContext = GetDbContext(dbContextParamters, eFCoreShardingOptions);
return(GetProvider(dbContextParamters.DbType).GetDbAccessor(dbContext));
}
/// <summary>
///
/// </summary>
/// <param name="contextOptions"></param>
/// <param name="paramter"></param>
/// <param name="shardingOptions"></param>
public GenericDbContext(DbContextOptions contextOptions, DbContextParamters paramter, EFCoreShardingOptions shardingOptions)
: base(contextOptions)
{
DbContextOption = contextOptions;
Paramter = paramter;
ShardingOption = shardingOptions;
Database.SetCommandTimeout(ShardingOption.CommandTimeout);
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="serviceProvider"></param>
public EFCoreShardingBootstrapper(IServiceProvider serviceProvider)
{
_serviceProvider = serviceProvider;
_shardingOptions = serviceProvider.GetService <IOptions <EFCoreShardingOptions> >().Value;
DiagnosticListener.AllListeners.Subscribe(
new DiagnosticObserver(serviceProvider.GetService <ILoggerFactory>(),
_shardingOptions.MinCommandElapsedMilliseconds));
Cache.ServiceProvider = serviceProvider;
}
public GenericDbContext GetDbContext(DbContextParamters dbContextParamters, EFCoreShardingOptions eFCoreShardingOptions)
{
if (eFCoreShardingOptions == null)
{
eFCoreShardingOptions = _optionsMonitor.BuildOption(null);
}
AbstractProvider provider = GetProvider(dbContextParamters.DbType);
DbConnection dbConnection = provider.GetDbConnection();
dbConnection.ConnectionString = dbContextParamters.ConnectionString;
DbContextOptionsBuilder builder = new DbContextOptionsBuilder();
builder.UseLoggerFactory(_loggerFactory);
provider.UseDatabase(builder, dbConnection);
builder.ReplaceService <IModelCacheKeyFactory, GenericModelCacheKeyFactory>();
builder.ReplaceService <IMigrationsModelDiffer, ShardingMigration>();
return(new GenericDbContext(builder.Options, dbContextParamters, eFCoreShardingOptions));
}
public DbFactory(ILoggerFactory loggerFactory, IOptions <EFCoreShardingOptions> shardingOptions)
{
_loggerFactory = loggerFactory;
_shardingOptions = shardingOptions.Value;
}
