internal static unsafe void WriteViewRouteKey(byte *keyPtr, string viewName)
{
keyPtr[0] = METACF_VIEW_ROUTER_PREFIX;
var writer = new EntityStoreWriter(keyPtr, 1);
writer.WriteString(viewName, null);
}
internal static unsafe void WriteAssemblyKey(bool isService, byte *keyPtr, string asmName)
{
if (isService)
{
keyPtr[0] = METACF_SERVICE_ASSEMBLY_PREFIX;
}
else
{
keyPtr[0] = METACF_VIEW_ASSEMBLY_PREFIX;
}
var writer = new EntityStoreWriter(keyPtr, 1);
writer.WriteString(asmName, null);
}
/// <summary>
/// 保存视图模型路由表
/// </summary>
/// <param name="viewName">eg: sys.CustomerList</param>
/// <param name="path">无自定义路由为空，有上级路由;分隔</param>
internal static ValueTask UpsertViewRoute(string viewName, string path, Transaction txn)
{
//TODO:简化Key与Value编码,直接utf8,各减去3字节字符数标记
IntPtr keyPtr;
int keySize = EntityStoreWriter.CalcStringUtf8Size(viewName) + 1;
IntPtr dataPtr = IntPtr.Zero;
int valueSize = EntityStoreWriter.CalcStringUtf8Size(path);
unsafe
{
byte *pk = stackalloc byte[keySize];
KeyUtil.WriteViewRouteKey(pk, viewName);
keyPtr = new IntPtr(pk);
if (!string.IsNullOrEmpty(path))
{
dataPtr = NativeApi.NewNativeString(valueSize, out byte *destDataPtr);
var sr = new EntityStoreWriter(destDataPtr, 0);
sr.WriteString(path, null);
}
}
var req = new ClrInsertRequire
{
RaftGroupId = KeyUtil.META_RAFTGROUP_ID,
KeyPtr = keyPtr,
KeySize = new IntPtr(keySize),
DataPtr = dataPtr,
SchemaVersion = 0,
OverrideIfExists = true,
DataCF = -1
};
IntPtr reqPtr;
unsafe { reqPtr = new IntPtr(&req); }
return(HostApi.ExecKVInsertAsync(txn.Handle, reqPtr));
}