I need to solve this issue with my app.
I try to scan the peripherals (Bluetooth devices) using the CBCentralManager from the CoreBluetooth in Xamarin.iOS, but when a peripheral is discovered it has an empty name sometimes, when I do the same from the iOS settings then it has a name.
I'm not searching for a specific UUID.
CBCentralManager manager = new CBCentralManager(CoreFoundation.DispatchQueue.MainQueue);
manager.DiscoveredPeripheral += (sender, e) =>
{
if (e.Peripheral != null)
{
Debug.WriteLine($"DiscoveredPeripheral: {e.Peripheral.Name} - {e.Peripheral.Identifier} - {e.AdvertisementData}");
PeripheralsList.Add(e.Peripheral);
CustomDeviceDiscoveredAction(this, new CustomBTEDevice
{
DeviceName = e.Peripheral.Name,
DeviceAddress = e.Peripheral.Identifier.AsString(),
DeviceGuid = Guid.Parse(e.Peripheral.Identifier.AsString())
});
}
};
manager.ScanForPeripherals(null, new PeripheralScanningOptions
{
AllowDuplicatesKey = false,
});
Check property LocalName in the advertisement data package
Also, my suggestions, do not rely on the device name, better rely on data in advertisement data
Related
I have a FTDI USB3 development board and some FTDI provided code for accessing it. The code works fine for things like the Device number, VID/PID etc. but always returns zero for the 'ftHandle'. As the handle is required for driving the board, this is not helpful! Can anyone see why this should happen?
static FT_STATUS displayDevicesMethod2(void)
{
FT_STATUS ftStatus;
FT_HANDLE ftHandle = NULL;
// Get and display the list of devices connected
// First call FT_CreateDeviceInfoList to get the number of connected devices.
// Then either call FT_GetDeviceInfoList or FT_GetDeviceInfoDetail to display device
info.
// Device info: Flags (usb speed), device type (600 e.g.), device ID (vendor,
product),
handle for subsequent data access.
DWORD numDevs = 0;
ftStatus = FT_CreateDeviceInfoList(&numDevs); // Build a list and return number
connected.
if (FT_FAILED(ftStatus))
{
printf("Failed to create a device list, status = %d\n", ftStatus);
}
printf("Successfully created a device list.\n\tNumber of connected devices: %d\n",
numDevs);
// Method 2: using FT_GetDeviceInfoDetail
if (!FT_FAILED(ftStatus) && numDevs > 0)
{
ftHandle = NULL;
DWORD Flags = 0;
DWORD Type = 0;
DWORD ID = 0;
char SerialNumber[16] = { 0 };
char Description[32] = { 0 };
for(DWORD i = 0; i <numDevs; i++)
{
ftStatus = FT_GetDeviceInfoDetail(i, &Flags, &Type, &ID, NULL, SerialNumber,
Description, &ftHandle);
if (!FT_FAILED(ftStatus))
{
printf("Device[%d] (using FT_GetDeviceInfoDetail)\n", i);
printf("\tFlags: 0x%x %s | Type: %d | ID: 0x%08X | ftHandle=0x%p\n",
Flags,
Flags & FT_FLAGS_SUPERSPEED? "[USB 3]":
Flags & FT_FLAGS_HISPEED? "[USB 2]":
Flags & FT_FLAGS_OPENED? "[OPENED]": "",
Type,
ID,
ftHandle);
printf("\tSerialNumber=%s\n", SerialNumber);
printf("\tDescription=%s\n", Description);
}
}
}
return ftStatus;
}
This is indeed not super straight forward, but a short peek in the FTDI Knowledgebase yields:
This function builds a device information list and returns the number of D2XX devices connected to the system. The list contains information about both unopen and open devices.
A handle only exists for an opened device. Thus, I assume that your code does not already include that step. If so you need to open it first, e.g. using FT_Open. There are plenty of examples available. You can check their page or stackoverflow for a working example.
By default App Insights use page title as event name. Having dynamic page names, like "Order 32424", creates insane amount of event types.
Documentation on the matter says to use trackEvent method, but there are no examples.
appInsights.trackEvent("Edit button clicked", { "Source URL": "http://www.contoso.com/index" })
What is the best approach? It would be perfect to have some sort of map/filter which would allow to modify event name for some pages to the shared name, like "Order 23424" => "Order", at the same time to leave most pages as they are.
You should be able to leverage telemetry initializer approach to replace certain pattern in the event name with the more "common" version of that name.
Here is the example from Application Insights JS SDK GitHub on how to modify pageView's data before it's sent out. With the slight modification you may use it to change event names based on their appearance:
window.appInsights = appInsights;
...
// Add telemetry initializer
appInsights.queue.push(function () {
appInsights.context.addTelemetryInitializer(function (envelope) {
var telemetryItem = envelope.data.baseData;
// To check the telemetry item’s type:
if (envelope.name === Microsoft.ApplicationInsights.Telemetry.PageView.envelopeType) {
// this statement removes url from all page view documents
telemetryItem.url = "URL CENSORED";
}
// To set custom properties:
telemetryItem.properties = telemetryItem.properties || {};
telemetryItem.properties["globalProperty"] = "boo";
// To set custom metrics:
telemetryItem.measurements = telemetryItem.measurements || {};
telemetryItem.measurements["globalMetric"] = 100;
});
});
// end
...
appInsights.trackPageView();
appInsights.trackEvent(...);
With help of Dmitry Matveev I've came with the following final code:
var appInsights = window.appInsights;
if (appInsights && appInsights.queue) {
function adjustPageName(item) {
var name = item.name.replace("AppName", "");
if (name.indexOf("Order") !== -1)
return "Order";
if (name.indexOf("Product") !== -1)
return "Shop";
// And so on...
return name;
}
// Add telemetry initializer
appInsights.queue.push(function () {
appInsights.context.addTelemetryInitializer(function (envelope) {
var telemetryItem = envelope.data.baseData;
// To check the telemetry item’s type:
if (envelope.name === Microsoft.ApplicationInsights.Telemetry.PageView.envelopeType || envelope.name === Microsoft.ApplicationInsights.Telemetry.PageViewPerformance.envelopeType) {
// Do not track admin pages
if (telemetryItem.name.indexOf("Admin") !== -1)
return false;
telemetryItem.name = adjustPageName(telemetryItem);
}
});
});
}
Why this code is important? Because App Insights use page titles by default as Name for PageView, so you would have hundreds and thousands of different events, like "Order 123132" which would make further analysis (funnel, flows, events) meaningless.
Key highlights:
var name = item.name.replace("AppName", ""); If you put your App/Product name in title, you probably want to remove it from you event name, because it would just repeat itself everywhere.
appInsights && appInsights.queue you should check for appInsights.queue because for some reason it can be not defined and it would cause an error.
if (telemetryItem.name.indexOf("Admin") !== -1) return false; returning false will cause event to be not recorded at all. There certain events/pages you most likely do not want to track, like admin part of website.
There are two types of events which use page title as event name: PageView
and PageViewPerformance. It makes sense to modify both of them.
Here's one work-around, if you're using templates to render your /orders/12345 pages:
appInsights.trackPageView({name: TEMPLATE_NAME });
Another option, perhaps better suited for a SPA with react-router:
const Tracker = () => {
let {pathname} = useLocation();
pathname = pathname.replace(/([/]orders[/])([^/]+), "$1*"); // handle /orders/NN/whatever
pathname = pathname.replace(/([/]foo[/]bar[/])([^/]+)(.*)/, "$1*"); // handle /foo/bar/NN/whatever
useEffect(() => {
appInsights.trackPageView({uri: pathname});
}, [pathname]);
return null;
}
I'm creating a file in Acumatica by calling an action from the API, so that I can retrieve the file in my application.
Is it possible to delete the file via API after I'm done with it? I'd rather not have it cluttering up my Acumatica database.
Failing this, is there a recommended cleanup approach for these files?
Found examples of how to delete a file from within Acumatica, as well as how to save a new version of an existing file! The below implementation saves a new version but has the deletion method commented out. Because I built this into my report generation process, I'm not later deleting the report via API, but it would be easy to translate a deletion into an action callable by the API.
private IEnumerable ExportReport(PXAdapter adapter, string reportID, Dictionary<String, String> parameters)
{
//Press save if the SO is not completed
if (Base.Document.Current.Completed == false)
{
Base.Save.Press();
}
PX.SM.FileInfo file = null;
using (Report report = PXReportTools.LoadReport(reportID, null))
{
if (report == null)
{
throw new Exception("Unable to access Acumatica report writer for specified report : " + reportID);
}
PXReportTools.InitReportParameters(report, parameters, PXSettingProvider.Instance.Default);
ReportNode reportNode = ReportProcessor.ProcessReport(report);
IRenderFilter renderFilter = ReportProcessor.GetRenderer(ReportProcessor.FilterPdf);
//Generate the PDF
byte[] data = PX.Reports.Mail.Message.GenerateReport(reportNode, ReportProcessor.FilterPdf).First();
file = new PX.SM.FileInfo(reportNode.ExportFileName + ".pdf", null, data);
//Save the PDF to the SO
UploadFileMaintenance graph = new UploadFileMaintenance();
//Check to see if a file with this name already exists
Guid[] files = PXNoteAttribute.GetFileNotes(Base.Document.Cache, Base.Document.Current);
foreach (Guid fileID in files)
{
FileInfo existingFile = graph.GetFileWithNoData(fileID);
if (existingFile.Name == reportNode.ExportFileName + ".pdf")
{
//If we later decide we want to delete previous versions instead of saving them, this can be changed to
//UploadFileMaintenance.DeleteFile(existingFile.UID);
//But in the meantime, for history purposes, set the UID of the new file to that of the existing file so we can save it as a new version.
file.UID = existingFile.UID;
}
}
//Save the file with the setting to create a new version if one already exists based on the UID
graph.SaveFile(file, FileExistsAction.CreateVersion);
//Save the note attribute so we can find it again.
PXNoteAttribute.AttachFile(Base.Document.Cache, Base.Document.Current, file);
}
//Return the info on the file
return adapter.Get();
}
The response from Acumatica:
S-b (Screen-base) API allows clean way of downloading report generated as file. C-b (Contract-base) simply does not have this feature added. I suggest you provided feedback here: feedback.acumatica.com (EDIT: Done! https://feedback.acumatica.com/ideas/ACU-I-1852)
I think couple of workaround are:
1) use s-b using login from c-b to generate report and get as file (see example below), or
2) create another method to delete the file once required report file is downloaded. For that, you will need to pass back FileID or something to identify for deletion.
example of #1
using (DefaultSoapClient sc = new DefaultSoapClient("DefaultSoap1"))
{
string sharedCookie;
using (new OperationContextScope(sc.InnerChannel))
{
sc.Login("admin", "123", "Company", null, null);
var responseMessageProperty = (HttpResponseMessageProperty)
OperationContext.Current.IncomingMessageProperties[HttpResponseMessageProperty.Name];
sharedCookie = responseMessageProperty.Headers.Get("Set-Cookie");
}
try
{
Screen scr = new Screen(); // add reference to report e.g. http://localhost/Demo2018R2/Soap/SO641010.asmx
scr.CookieContainer = new System.Net.CookieContainer();
scr.CookieContainer.SetCookies(new Uri(scr.Url), sharedCookie);
var schema = scr.GetSchema();
var commands = new Command[]
{
new Value { LinkedCommand = schema.Parameters.OrderType, Value = "SO" },
new Value { LinkedCommand = schema.Parameters.OrderNumber, Value = "SO004425" },
schema.ReportResults.PdfContent
};
var data = scr.Submit(commands);
if(data != null && data.Length > 0)
{
System.IO.File.WriteAllBytes(#"c:\Temp\SalesOrder.pdf",
Convert.FromBase64String(data[0].ReportResults.PdfContent.Value));
}
}
finally
{
sc.Logout();
}
}
Hope this helps. Also, it would be great if you update the stackover post based on these suggestions.
Thanks
Nayan Mansinha
Lead - Developer Support | Acumatica
We have a small utility program that removes ICC profile, and I'm trying to optimize it.
The current program uses roughly this method to remove an ICC profile:
foreach (var item in doc.ObjectSoup)
{
if (item != null && doc.GetInfo(item.ID, "/ColorSpace*[0]*:Name").Equals("ICCBased", StringComparison.InvariantCultureIgnoreCase))
{
int profileId = doc.GetInfoInt(item.ID, "/ColorSpace*[1]:Ref"); // note the [1]: why is it there?
if (profileId != 0)
{
doc.GetInfo(profileId, "Decompress");
string profileData = doc.GetInfo(profileId, "Stream");
// this outputs the ICC profile raw data, with the profile's name somewhere up top
Console.WriteLine(string.Format("ICC profile for object ID {0}: {1}", item.ID, profileData));
doc.SetInfo(profileId, "Stream", string.Empty);
doc.GetInfo(profileId, "Compress");
}
}
}
Now, I want to optimize it, to be able to remove only some profiles (depending on the names), or only RGB profiles for instance (and keep CMYK ones). So I wanted to use actual objects :
foreach (var item in doc.ObjectSoup)
{
if (doc.GetInfo(item.ID, "Type") == "jpeg") // only work on PixMaps
{
PixMap pm = (PixMap)item;
if (pm.ColorSpaceType == ColorSpaceType.ICCBased)
{
// pm.ColorSpace.IccProfile is always null so I can't really set it to null or Recolor() it because it would change noting
// Also, there should already be an ICC profile (ColorSpaceType = ICCBased) but ColorSpace.IccProfile creates one (which is by design if there is none)
Console.WriteLine(string.Format("ICC profile for object ID {0}: {1}", item.ID, pm.ColorSpace.IccProfile));
}
}
}
Here is a sample program that showcases the problem : https://github.com/tbroust-trepia/abcpdf8-icc-profiles
Am I doing something wrong ? Is there something weird going on with the provided images ?
I'm using ABCPdf 8.
Thanks for your help.
I have a web app running on Azure shared web site mode. A simple method where I add items to a list and sort this list, when the list size is about 300 items, takes 0.3s on my machine and 10s after deploy (on azure machine).
Does anybody has any idea why Azure is so slow?
Is any configuration I do it wrong? I use default one but replaced FREE mode with SHARED mode because I thought this would help but it seems it does not.
UPDATE:
public ActionResult GetPosts(String selectedStreams, int implicitSelectedVisualiserId, int userId)
{
DateTime begin = DateTime.UtcNow;
List<SearchQuery> selectedSearchQueries = searchQueryRepository.GetSearchQueriesOfStreamsIds(selectedStreams == String.Empty ? new List<int>() : selectedStreams.Split(',').Select(n => int.Parse(n)).ToList());
var implicitSelectedVisualiser = VisualiserModel.ToVisualiserModel(visualiserRepository.GetVisualiser(implicitSelectedVisualiserId));
var twitterSearchQueryOfImplicitSelectedVisualiser = searchQueryRepository.GetSearchQuery(implicitSelectedVisualiser.Stream.Name, Service.Twitter, userId);
var instagramSearchQueryOfImplicitSelectedVisualiser = searchQueryRepository.GetSearchQuery(implicitSelectedVisualiser.Stream.Name, Service.Instagram, userId);
var facebookSearchQueryOfImplicitSelectedVisualiser = searchQueryRepository.GetSearchQuery(implicitSelectedVisualiser.Stream.Name, Service.Facebook, userId);
var manualSearchQueryOfImplicitSelectedVisualiser = searchQueryRepository.GetSearchQuery(implicitSelectedVisualiser.Stream.Name, Service.Manual, userId);
List<SearchResultModel> approvedSearchResults = new List<SearchResultModel>();
if (twitterSearchQueryOfImplicitSelectedVisualiser != null || instagramSearchQueryOfImplicitSelectedVisualiser != null || facebookSearchQueryOfImplicitSelectedVisualiser != null
|| manualSearchQueryOfImplicitSelectedVisualiser != null)
{
// Define search text to be displayed during slideshow;
SearchModel searchModel = new SearchModel();
// Set slideshow settings from implicit selected visualiser.
ViewBag.CurrentVisualiser = implicitSelectedVisualiser;
// Load search results from selected visualisers.
foreach (SearchQuery searchQuery in selectedSearchQueries)
{
approvedSearchResults.AddRange(
SearchResultModel.ToSearchResultModel(
searchResultRepository.GetSearchResults
(searchQuery.Id,
implicitSelectedVisualiser.Language)));
// Add defined query too.
searchModel.SearchValue += " " + searchQuery.Query;
}
// Add defined query for implicit selected visualiser.
if (twitterSearchQueryOfImplicitSelectedVisualiser != null)
searchModel.SearchValue += " " + twitterSearchQueryOfImplicitSelectedVisualiser.Query;
if (instagramSearchQueryOfImplicitSelectedVisualiser != null)
searchModel.SearchValue += " " + instagramSearchQueryOfImplicitSelectedVisualiser.Query;
if (facebookSearchQueryOfImplicitSelectedVisualiser != null)
searchModel.SearchValue += " " + facebookSearchQueryOfImplicitSelectedVisualiser.Query;
ViewBag.Search = searchModel;
// Also add search results from implicit selected visualiser
if (twitterSearchQueryOfImplicitSelectedVisualiser != null)
approvedSearchResults.AddRange(SearchResultModel.ToSearchResultModel(searchResultRepository.GetSearchResults(twitterSearchQueryOfImplicitSelectedVisualiser.Id, implicitSelectedVisualiser.Language)));
if (instagramSearchQueryOfImplicitSelectedVisualiser != null)
approvedSearchResults.AddRange(SearchResultModel.ToSearchResultModel(searchResultRepository.GetSearchResults(instagramSearchQueryOfImplicitSelectedVisualiser.Id, implicitSelectedVisualiser.Language)));
if (facebookSearchQueryOfImplicitSelectedVisualiser != null)
approvedSearchResults.AddRange(SearchResultModel.ToSearchResultModel(searchResultRepository.GetSearchResults(facebookSearchQueryOfImplicitSelectedVisualiser.Id, implicitSelectedVisualiser.Language)));
if (manualSearchQueryOfImplicitSelectedVisualiser != null)
approvedSearchResults.AddRange(SearchResultModel.ToSearchResultModel(searchResultRepository.GetSearchResults(manualSearchQueryOfImplicitSelectedVisualiser.Id, implicitSelectedVisualiser.Language)));
// if user selected to show only posts from specific number of last days.
var approvedSearchResultsFilteredByDays = new List<SearchResultModel>();
if (implicitSelectedVisualiser.ShowPostsFromLastXDays != 0)
{
foreach (SearchResultModel searchResult in approvedSearchResults)
{
var postCreatedTimeWithDays = searchResult.PostCreatedTime.AddDays(implicitSelectedVisualiser.ShowPostsFromLastXDays + 1);
if (postCreatedTimeWithDays >= DateTime.Now)
approvedSearchResultsFilteredByDays.Add(searchResult);
}
}
else
{
approvedSearchResultsFilteredByDays = approvedSearchResults;
}
// Order search results (posts to be displayed by created datetime).
var approvedSearchResultsOrdered = new List<SearchResultModel>();
if (implicitSelectedVisualiser.PostsSortOrder == PostsSortOrder.CREATED_DATE_ASC)
{
approvedSearchResultsOrdered = approvedSearchResultsFilteredByDays.OrderBy(s => s.PostCreatedTime).ToList(); ;
}
else if (implicitSelectedVisualiser.PostsSortOrder == PostsSortOrder.CREATED_DATE_DESC)
{
approvedSearchResultsOrdered = approvedSearchResultsFilteredByDays.OrderByDescending(s => s.PostCreatedTime).ToList(); ;
}
else if (implicitSelectedVisualiser.PostsSortOrder == PostsSortOrder.RANDOM)
{
var rnd = new Random();
approvedSearchResultsOrdered = approvedSearchResultsFilteredByDays.OrderBy(x => rnd.Next()).ToList();
}
// Load background images;
var visualiserImages = visualiserImageRepository.GetImages(implicitSelectedVisualiser.Id);
//foreach (SearchResultModel searchResultModel in approvedSearchResultsOrdered)
//{
// searchResultModel.BackgroundImagePath = TwitterUtils.GetRandomImageBackgroundForDisplay(visualiserImages);
//}
ViewBag.BackgroundImagePath = TwitterUtils.GetRandomImageBackgroundForDisplay(visualiserImages);
approvedSearchResults = approvedSearchResultsOrdered;
}
DateTime end = DateTime.UtcNow;
Elmah.ErrorSignal.FromCurrentContext().Raise(new Exception(String.Format("User {0}: Preparing {1} posts for visualiser took {2} seconds", MySession.Current.LoggedInUserName, approvedSearchResults.Count(), (end - begin).TotalMilliseconds / 1000)));
return PartialView("_DisplayPostsNew", approvedSearchResults);
}
This isn't surprising actually. The servers used in Windows Azure are currently mostly 1.6 GHz machines. The larger sized machine you use the more cores you get, but they are all the same speed. This likely is a much slower CPU than the development machine you use.
On Windows Azure Web Sites when you move to Shared mode you are still in a multi-tenant environment, so you could be seeing some noisy neighbors here. The difference between Free and Shared is that many of the quotas for free are removed since you are paying. When you move to Standard then you are assigned a Virtual Machine dedicated to your web sites (up to 100 of them), so that is the best case scenario since you are the only one using the resources at that point.
There was a thread on this on the MSDN forums a while back : http://social.msdn.microsoft.com/Forums/windowsazure/en-US/0d0a3a88-eac4-4b9e-8b10-4a547cbf653b/performance-of-azure-servers-slow-cpus?forum=windowsazuredevelopment
They have started offering different hardware configurations with more memory for Virtual Machines and Cloud Services and such, but I'm not sure the CPUs have been changed. It's hard to find the CPU stated on WindowsAzure.com anymore, but on the pricing calculator for Web Sites it references 1.6Ghz machines when you move the slider to Standard.
Actually I found the issue.
Locally, I tested with a few hundreds of records in my DB while in Azure DB I have over 70 000 records in that table which affects performance of the algorithm...
One mistake I did in the code above: I have filtered records from DB by specific date AFTER taking all out. By filtering directly in Linq, I increased the performance from 10s to 0.3s in Azure too.