// Get the whole REST API string for a device, from cache if possible
internal virtual async Task <YJSONObject> requestAPI()
{
if (_cache_expiration > YAPI.GetTickCount())
{
return(_cache_json);
}
string request;
if (_cache_json == null)
{
request = "GET /api.json \r\n\r\n";
}
else
{
string fw = _cache_json.getYJSONObject("module").getString("firmwareRelease");
request = "GET /api.json?fw=" + YAPIContext.imm_escapeAttr(fw) + " \r\n\r\n";
}
string yreq = await requestHTTPSyncAsString(request, null);
YJSONObject cache_json;
try {
cache_json = new YJSONObject(yreq);
cache_json.parseWithRef(_cache_json);
} catch (Exception ex) {
_cache_json = null;
throw new YAPI_Exception(YAPI.IO_ERROR, "Request failed, could not parse API (" + ex.Message + ")");
}
this._cache_expiration = YAPI.GetTickCount() + YAPI.DefaultCacheValidity;
this._cache_json = cache_json;
return(cache_json);
}
// Change the value of an attribute on a device, and update cache on the fly
// Note: the function cache is a typed (parsed) cache, contrarily to the agnostic device cache
protected internal virtual async Task <int> _setAttr(string attr, string newval)
{
if (newval == null)
{
throw new YAPI_Exception(YAPI.INVALID_ARGUMENT, "Undefined value to set for attribute " + attr);
}
string attrname = YAPIContext.imm_escapeAttr(attr);
string extra = "/" + attrname + "?" + attrname + "=" + YAPIContext.imm_escapeAttr(newval) + "&.";
await _devRequest(extra);
if (_cacheExpiration != 0)
{
_cacheExpiration = YAPI.GetTickCount();
}
return(YAPI.SUCCESS);
}
protected string imm_escapeAttr(string changeval)
{
return(YAPIContext.imm_escapeAttr(changeval));
}
