I am using the watcher service and it works great. I need to only watch for files with a certain extension, e.g. .xml. How can I implement this?
Thanks.
It appears that there is no built-in file extension filter (like there is using the old java.io.FileFilter interface). I solved this same issue by adding an "if" statement in my processing code like so:
// Watcher gives key and you get event...
WatchEvent<Path> ev = (WatchEvent<Path>) event;
Path file = dir.resolve(ev.context());
if (isCorrectFileType(file)) {
// Do you processing here.
}
And the simple check:
private boolean isCorrectFileType(Path file) {
return (file.toString().endsWith(".xml"));
}
Related
I want to modify how some code in Visual Studio 22 is generated.
For instance, in methods I can generate null check on using the Add null check (MS docs link) for arguments in the following way.
public void MyMethod(object parameter)
{
if (object is null)
{
throw new ArgumentNullException(nameof(parameter));
}
// rest of the method
// ...
}
What I would like to be generated is this:
public void MyMethod(object parameter)
{
if (object is null) throw new ArgumentNullException(nameof(parameter));
// rest of the method
// ...
}
I was looking at code snippet settings and refactoring settings but I can not find the Add null check option anywhere. Let alone change it.
The best option I came up with is to create a code snippet (MS docs link) but that does not serve my purpose fully.
Is there an option I can modify to say how is the code generated?
Rewriting an answer by canton7 from the comments:
The Add null check is not generated by any code snippet. Rather it is based on the standard analyzer infrastructure (defined here and seen here). This means it is just a semantically generated if statement with a throw inside of it. Then based on your .editorconfig (or defaults if not specified) it formates the code accordingly.
One is left with the following options:
Edit the .editorconfig file to make the code format as pleased. Note that this approach applies globally.
Wait for the C# 11 !! syntax.
Write your own analyzer and code fix (tutorial).
Edit it by hand :).
I've a requirement to download a file from S3 based on a message content. In other words, the file to download is previously unknown, I've to search and find it at runtime. S3StreamingMessageSource doesn't seem to be a good fit because:
It relies on polling where as I need to wait for the message.
I can't find any way to create a S3StreamingMessageSource dynamically in the middle of a flow. gateway(IntegrationFlow) looks interesting but what I need is a gateway(Function<Message<?>, IntegrationFlow>) that doesn't exist.
Another candidate is S3MessageHandler but it has no support for listing files which I need for finding the desired file.
I can implement my own message handler using AWS API directly, just wondering if I'm missing something, because this doesn't seem like an unusual requirement. After all, not every app just sits there and keeps polling S3 for new files.
There is S3RemoteFileTemplate with the list() function which you can use in the handle(). Then split() result and call S3MessageHandler for each remote file to download.
Although the last one has functionality to download the whole remote dir.
For anyone coming across this question, this is what I did. The trick is to:
Set filters later, not at construction time. Note that there is no addFilters or getFilters method, so filters can only be set once, and can't be added later. #artem-bilan, this is inconvenient.
Call S3StreamingMessageSource.receive manually.
.handle(String.class, (fileName, h) -> {
if (messageSource instanceof S3StreamingMessageSource) {
S3StreamingMessageSource s3StreamingMessageSource = (S3StreamingMessageSource) messageSource;
ChainFileListFilter<S3ObjectSummary> chainFileListFilter = new ChainFileListFilter<>();
chainFileListFilter.addFilters(
new S3SimplePatternFileListFilter("**/*/*.json.gz"),
new S3PersistentAcceptOnceFileListFilter(metadataStore, ""),
new S3FileListFilter(fileName)
);
s3StreamingMessageSource.setFilter(chainFileListFilter);
return s3StreamingMessageSource.receive();
}
log.warn("Expected: {} but got: {}.",
S3StreamingMessageSource.class.getName(), messageSource.getClass().getName());
return messageSource.receive();
}, spec -> spec
.requiresReply(false) // in case all messages got filtered out
)
I'm currently using MvvmCross DownloadCache -- and it's working alright -- especially nice when I just need to drop in an Image URL and it automagically downloads / caches the image and serves up a UIImage.
I was hoping to leverage the code for one other use case -- which is I'd like to grab source images from URL's and cache the files on the local file system, but what I really want for this other use case is the image path on the local file system instead of the UIImage itself.
What would help me most if I could get an example of how I might accomplish that. Is it possible to make that happen in a PCL, or does it need to go into the platform specific code?
Thanks -- that works, but just in case anyone else is following along, I wanted to document how I got the Mvx.Resolve<IMvxFileDownloadCache>() to work. In my setup.cs (in the touch project), I had:
protected override void InitializeLastChance ()
{
Cirrious.MvvmCross.Plugins.DownloadCache.PluginLoader.Instance.EnsureLoaded();
Cirrious.MvvmCross.Plugins.File.PluginLoader.Instance.EnsureLoaded();
Cirrious.MvvmCross.Plugins.Json.PluginLoader.Instance.EnsureLoaded();
...
}
But that wasn't enough, because nothing actually registers IMvxFileDownloadCache inside the DownloadCache plugin (which I was expecting, but it's just not the case).
So then I tried adding this line here:
Mvx.LazyConstructAndRegisterSingleton<IMvxFileDownloadCache, MvxFileDownloadCache>();
But that failed because MvxFileDownloadCache constructor takes a few arguments. So I ended up with this:
protected override void InitializeLastChance ()
{
...
var configuration = MvxDownloadCacheConfiguration.Default;
var fileDownloadCache = new MvxFileDownloadCache(
configuration.CacheName,
configuration.CacheFolderPath,
configuration.MaxFiles,
configuration.MaxFileAge);
Mvx.RegisterSingleton<IMvxFileDownloadCache>(fileDownloadCache);
...
}
And the resolve works okay now.
Question:
I do wonder what happens if two MvxFileDownloadCache objects that are configured in exactly the same way will cause issues by stepping on each other. I could avoid that question by changing the cache name on the one I'm constructing by hand, but I do want it to be a single cache (the assets will be the same).
If you look at the source for the plugin, you'll find https://github.com/MvvmCross/MvvmCross/blob/3.2/Plugins/Cirrious/DownloadCache/Cirrious.MvvmCross.Plugins.DownloadCache/IMvxFileDownloadCache.cs - that will give you a local file path for a cached file:
public interface IMvxFileDownloadCache
{
void RequestLocalFilePath(string httpSource, Action<string> success, Action<Exception> error);
}
You can get hold of a service implementing this interface using Mvx.Resolve<IMvxFileDownloadCache>()
To then convert that into a system-wide file path, try NativePath in https://github.com/MvvmCross/MvvmCross/blob/3.2/Plugins/Cirrious/File/Cirrious.MvvmCross.Plugins.File/IMvxFileStore.cs#L27
I'm using jdk7's WatchService API for monitoring the folder on file system.I'm sending a new file through
email to that folder, when the file comes into that folder i m triggering the ENTRY_CRATE option. its working fine.
But the issue is its generating two events of ENTRY_CREATE instead of one event which i'm invoking.
BELOW IS THE CODE:
Path dir = Paths.get(/var/mail);
WatchService watcher = dir.getFileSystem().newWatchService();
dir.register(watcher, StandardWatchEventKinds.ENTRY_CREATE);
System.out.println("waiting for new file");
WatchKey watckKey = watcher.take();
List<WatchEvent<?>> events = watckKey.pollEvents();
System.out.println(events.size());
for(WatchEvent<?> event : events){
if(event.kind() == StandardWatchEventKinds.ENTRY_CREATE){
String fileCreated=event.context().toString().trim();
}
}
In the above code I'm gettng the events size as 2.
Can any one please help me in finding out the reason why i'm getting two events.
I am guessing that there might be some temporary files being created in the folder at the same time. Just check what are the name/paths of the file being created.
Is there a way to control the name of the MSTEST video recoding file names or the folder names with the test name. It seems to generate different guid everytime and thus very difficult to map the test with its corresponding video recording files.
The only solution I can see is to read the TRX file and map the guid to Test Name.
Any suggestions ??
If you're not opposed to doing it by hand, it's pretty easy. I encountered the same problem, and needed them to be somewhere predictable so I could email links to the videos. In the end my solution just ended up being to code in the functionality by hand. It's a bit involved, but not too difficult.
First, you'll need to have Expression Encoder 4 installed.
Then you'll need to add these references to your project:
Microsoft.Expression.Encoder
Microsoft.Expression.Encoder.Api2
Microsoft.Expression.Encoder.Types
Microsoft.Expression.Encoder.Utilities
Next, you need to add the following inclusion statements:
using Microsoft.Expression.Encoder.Profiles;
using Microsoft.Expression.Encoder.ScreenCapture;
Then you can use [TestInitialize] and [TestCleanup] to define the correct behavior. These methods will run at the beginning and end of each test respectively. This can be done something like this:
[TestInitialize]
public void startVideoCapture()
{
screenCapJob.CaptureRectangle = RectangleSelectionUtilities.GetScreenRect(0);
screenCapJob.CaptureMouseCursor = true;
screenCapJob.ShowFlashingBoundary = false;
screenCapJob.OutputScreenCaptureFileName = "path you want to save to";
screenCapJob.Start();
}
[TestCleanup]
public void stopVideoCapture()
{
screenCapJob.Stop();
}
Obviously this code needs some error and edge case handling, but it should get you started.
You should also know that the free version of Expression Encoder 4 limits you to 10 minutes per video file, so you may want to make a timer that will start a new video for you when it hits 10 minutes.