In Windows8, I'm trying to use GetBasicPropertiesAsync() to get the size of a newly created file. Sometimes, but not always (~25% of the time), this call gives an exception of:
"Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))".
The file is created using DotNetZip. I'm adding thousands of files to the archive which takes a few minutes to run:
using (ZipFile zip = new ZipFile())
{
zip.AddFile(...); // for thousands of files
zip.Save(cr.ArchiveName);
}
var storageFile = await subFolder.GetFileAsync(cr.ArchiveName);
// storageFile is valid at this point
var basicProperties = await storageFile.GetBasicPropertiesAsync(); // BOOM!
A few apparently random things seem to decrease the likelihood of the exception:
Deleting an existing copy of cr.ArchiveName before the start of the loop.
Not viewing the directory using File Explorer
Weird, huh? It smells like it might be a bug related to File System Tunneling or maybe it's some internal caching that DotNetZip is performing and holding onto resources (maybe renaming the TEMP file) even after the ZipFile is disposed?
Trying to (unsuccessfully) answer my own question.
At first, I though this was a known issue with DotNetZip holding onto file handles until the next garbage collection. I am using the SL/WP7 port of DotNetZip from http://slsharpziplib.codeplex.com/ which presumably doesn't include the bug fixed by this workitem:
http://dotnetzip.codeplex.com/workitem/12727
But, according to that theory, doing:
GC.Collect();
GC.WaitForPendingFinalizers();
should have provided a work around, which it didn't.
Next I tried using handle, which didn't show any other activity on the failing StorageFile.
So for now, I'm still stumped.
Related
I am new to S3 and need to use it for image storage. I found a half dozen versions of an s2wrapper for cf but it appears that the only one set of for v4 is one modified by Leigh
https://gist.github.com/Leigh-/26993ed79c956c9309a9dfe40f1fce29
Dropped in the com directory and created a "test" page that contains the following code:
s3 = createObject('component','com.S3Wrapper').init(application.s3.AccessKeyId,application.s3.SecretAccessKey);
but got the following error :
So I changed the line 37 from
variables.Sv4Util = createObject('component', 'Sv4').init(arguments.S3AccessKey, arguments.S3SecretAccessKey);
to
variables.Sv4Util = createObject('component', 'Sv4Util').init(arguments.S3AccessKey, arguments.S3SecretAccessKey);
Now I am getting:
I feel like going through Leigh code and start changing things is a bad idea since I have lurked here for year an know Leigh's code is solid.
Does any know if there are any examples on how to use this anywhere? If not what I am doing wrong. If it makes a difference I am using Lucee 5 and not Adobe's CF engine.
UPDATE :
I followed Leigh's directions and the error is now gone. I am addedsome more code to my test page which now looks like this :
<cfscript>
s3 = createObject('component','com.S3v4').init(application.s3.AccessKeyId,application.s3.SecretAccessKey);
bucket = "imgbkt.domain.com";
obj = "fake.ping";
region = "s3-us-west-1"
test = s3.getObject(bucket,obj,region);
writeDump(test);
test2 = s3.getObjectLink(bucket,obj,region);
writeDump(test2);
writeDump(s3);
</cfscript>
Regardless of what I put in for bucket, obj or region I get :
JIC I did go to AWS and get new keys:
Leigh if you are still around or anyone how has used one of the s3Wrappers any suggestions or guidance?
UPDATE #2:
Even after Alex's help I am not able to get this to work. The Link I receive from getObjectLink is not valid and getObject never does download an object. I thought I would try the putObject method
test3 = s3.putObject(bucketName=bucket,regionName=region,keyName="favicon.ico");
writeDump(test3);
to see if there is any additional information, I received this :
I did find this article https://shlomoswidler.com/2009/08/amazon-s3-gotcha-using-virtual-host.html but it is pretty old and since S3 specifically suggests using dots in bucketnames I don't that it is relevant any longer. There is obviously something I am doing wrong but I have spent hours trying to resolve this and I can't seem to figure out what it might be.
I will give you a rundown of what the code does:
getObjectLink returns a HTTP URL for the file fake.ping that is found looking in the bucket imgbkt.domain.com of region s3-us-west-1. This link is temporary and expires after 60 seconds by default.
getObject invokes getObjectLink and immediately requests the URL using HTTP GET. The response is then saved to the directory of the S3v4.cfc with the filename fake.ping by default. Finally the function returns the full path of the downloaded file: E:\wwwDevRoot\taa\fake.ping
To save the file in a different location, you would invoke:
downloadPath = 'E:\';
test = s3.getObject(bucket,obj,region,downloadPath);
writeDump(test);
The HTTP request is synchronous, meaning the file will be downloaded completely when the functions returns the filepath.
If you want to access the actual content of the file, you can do this:
test = s3.getObject(bucket,obj,region);
contentAsString = fileRead(test); // returns the file content as string
// or
contentAsBinary = fileReadBinary(test); // returns the content as binary (byte array)
writeDump(contentAsString);
writeDump(contentAsBinary);
(You might want to stream the content if the file is large since fileRead/fileReadBinary reads the whole file into buffer. Use fileOpen to stream the content.
Does that help you?
I need to change ResourceDictionary values based a config that comes from the server.
The way I've gone about this is to have a resource file that I open and read the content into a string, do some replacements on it, then write the string back to a file in the temp folder.
What I need to do now is to load the file into the ResourceDictionary.Source which takes a URI.
If I take StorageFile.Path and use that for the URI, it doesn't work.
var resource = new ResourceDictionary
{
Source = new Uri( storageFile.Path )
};
This give me the error Value does not fall within the expected range..
I have tried
new Uri( "ms-appdata:///temp/" + storageFile.Name )
and that give me the error Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED)).
I have tried using the local folder instead, which gives me the same errors.
How can I get this to work?
I'd try loading it using XamlReader.Load().
I'm attempting to cache data in a file for a Windows Store app, and using the DateCreated value to determine if it is out of date.
I first tried doing this:
var file = await rootFolder.CreateFileAsync(filename, Windows.Storage.CreationCollisionOption.ReplaceExisting);
FileIO.WriteTextAsync(file, contents);
but when it saves the file only the DateModified value is changed, even though the comments for the ReplaceExisting option clearly state that it recreates the file and replaces an existing one.
So I decided to force it to delete the file and recreate it with this:
var file = await rootFolder.CreateFileAsync(filename, Windows.Storage.CreationCollisionOption.ReplaceExisting);
// force delete because windows rt is not doing what it's supposed to in the line above!!
await file.DeleteAsync();
file = await rootFolder.CreateFileAsync(filename);
FileIO.WriteTextAsync(file, contents);
but amazingly, I still get the same result! The file is deleted and recreated with the OLD CREATION DATE!
Is this a bug, or am I doing something wrong here?
This is by design, a feature called "File system tunneling". This KB article explains the behavior and rationale.
The workaround it documents requires registry editing, clearly you cannot rely on that in a Store application. You'll need to find a workaround, like using the last-written timestamp or alternating between two files or keep track of age in a separate file.
Thanks for the comments everyone, it turns out the Modified date IS available but you have to get it through the GetBasicPropertiesAsync() method as shown here: http://msdn.microsoft.com/en-us/library/windows/apps/windows.storage.fileproperties.basicproperties.datemodified.aspx
I'm trying to write/create a JSON file from a AIR app, I'm trying not so show a 'Save as' dialogue box.
Here's the code I'm using:
var fileDetails:Object = CreativeMakerJSX.getFileDetails();
var fileName:String = String(fileDetails.data.filename);
var path:String = String(fileDetails.data.path);
var f:File = File.userDirectory.resolvePath( path );
var stream:FileStream = new FileStream();
stream.open(f, FileMode.WRITE );
stream.writeUTFBytes( jsonToExport );
stream.close();
The problem I'm having is that I get a 'Error 3013. File or directory in use'. The directory/path is gathered from a Creative Suite Extension I'm building, this path is the same as the FLA being developed in CS that the Extension is being used with.
So I'm not sure if the problem is that there are already files in the directory I'm writing the JSON file to?
Do I need to add a timer in order to close the stream after a slight delay, giving some time to writing the file?
Can you set up some trace() commands? I would need to know what the values of the String variables are, and the f.url.
Can you read from the file that you are trying to write to, or does nothing work?
Where is CreativeMakerJSX.getFileDetails() coming from? Is it giving you data about a file that is in use?
And from Googling around, this seems like it may be a bug. Try setting up a listener for when you are finished, if you have had the file open previously.
I re-wrote how the file was written, no longer running into this issue.
I can't make it path specific because once I get this program to work (this is the last thing I have to do) I'm uploading to my university's ilearn website and it has to run on my professors computer with no modifications. I've tried a few different amalgamations of code similar to the following...
File file = new File("DataFile.txt");
Scanner document = new Scanner(new File("DataFile.txt"));
Or...
java.io.File file = new java.io.File("DataFile.txt");
Scanner document = new Scanner(file);
But nothing seems to work. I've got the necessary stuff imported. I've tried moving DataFile around in a few different folders (the src folder, and other random folders in the project's NetBeansProjects folder) I tried creating a folder in the project and putting the file in that folder and trying to use some kind of
documents/DataFile.txt
bit I found online (I named the folder documents).
I've tried renaming the file, saving it in different ways. I'm all out of ideas.
The file is just a list of numbers that are used in generating random data for this program we got assigned for building a gas station simulator. The program runs great when I just use user input from the console. But I can not get netbeans to find that file for the life of me! Help!?!?!?
Try adding the file to build path ..
public void readTextFile (){
try{
Scanner scFile =new Scanner(new File("filename.txt");
while(scFile.hasNext()){
String line =scFile.nextLine();
Scanner details=new Scanner(line).useDelimiter("symbol");
than you can work from there to store integer values use e.g in an array
litterArr(size)=details.nextInt();
Note: size is a variable counting the size/number of info the array has.
}
scFile.close();
{
catch
(FILENOTFOUNDEXCEPION e){
..... *code*
}
Keep file in the same folder as the program,but if it is saved in another folder you need to supply the path indicating the location of the file as part of the file name e.g memAthletics.Lines.LoadFromFile('C:\MyFiles\Athletics.txt');
hope this helps clear the problem up :)