/// <summary>
/// Invalidates the cache. Invalidates the cache of the function attributes. Forces the
/// next call to get_xxx() or loadxxx() to use values that come from the device.
///
///
/// </summary>
public virtual async Task clearCache()
{
try {
YDevice dev = await getYDevice();
dev.imm_clearCache();
} catch (YAPI_Exception) { }
if (_cacheExpiration != 0)
{
_cacheExpiration = YAPI.GetTickCount();
}
}
// Load and parse the REST API for a function given by class name and
// identifier, possibly applying changes
// Device cache will be preloaded when loading function "module" and
// leveraged for other modules
internal virtual async Task <YJSONObject> _devRequest(string extra)
{
YDevice dev = await getYDevice();
_hwId = _yapi._yHash.imm_resolveHwID(_className, _func);
string[] split = _hwId.Split(new char[] { '\\', '.' });
_funId = split[1];
_serial = split[0];
YJSONObject loadval = null;
if (extra.Equals(""))
{
// use a cached API string, without reloading unless module is
// requested
YJSONObject jsonval = await dev.requestAPI();
loadval = jsonval.getYJSONObject(_funId);
}
else
{
dev.imm_clearCache();
}
if (loadval == null)
{
// request specified function only to minimize traffic
if (extra.Equals(""))
{
string httpreq = "GET /api/" + _funId + ".json";
string yreq = await dev.requestHTTPSyncAsString(httpreq, null);
loadval = new YJSONObject(yreq);
loadval.parse();
}
else
{
string httpreq = "GET /api/" + _funId + extra;
await dev.requestHTTPAsync(httpreq, null, null, null);
return(null);
}
}
return(loadval);
}