How can I make a folder that does things. Surely dropbox knows when a file is put in the folder, and that file is synced. How can I make a folder that does the same, and that the files I put in it go to my ftp?
I'm trying to do this on a Mac (surely, Dropbox works fine on a Mac).
I believe what you are looking for is a way to monitor when files are changed. Then, you can simply upload the changed file via FTP like you mentioned. If this is the case, the answer is to tie into the Windows Folder and File events. Here is a good article on how to do so:
http://www.codeproject.com/KB/files/MonitorFolderActivity.aspx
The code needed to FTP a file can be found here:
http://msdn.microsoft.com/en-us/library/ms229715.aspx
All of this is assuming you are going to be using C#. If you are going to use a different language, you will need to perform the same basic actions in the same basic manner but the syntax will be different.
To get started, this is all you need. You watch the folder for changes to any of the files. When you see a change, you upload the changed file via FTP (if that is your desired method of web transport) to the remote location. Of course, you would need to do the opposite for other clients. They would need to subscribe to events on your server that told them to download the latest versions of the changed files. Finally, you would need to apply your own business logic for things like how often you want the uploads to happen, if you want logging enabled for the changes, if you are going to do file versioning, etc.
One solution(windows only + .NET) would be to run a client with and monitor a folder with FileSystemWatcher and when the change event fires, do appropriate action required to sync with FTP.
Related
I've been writing an app to deploy on Heroku. So far everything has been working great. However, there's one last step that I haven't been able to solve: I need to generate a CSV file on-the-fly from the DB and let the user download the file.
On my local machine I can simply write the file to a folder under the web app root, e.g. /output, and then redirect my browser to http://localhost:4000/output/1.csv to get the file.
However, the same code fails again and again on Heroku no matter how I try to modify it. It either complains about not being able to write the file or not being able to redirect the browser to the correct path.
Even if I manually use heroku run bash and create an /output folder in the project root and create a file there, when I try to direct my browser there (e.g. https://myapp.herokuapp.com/output/1.csv, it simply says "Page not found".
Is it simply impossible to perform such an action on Heroku after all? I thought since we are free to create files on the ephemeral file system we should be able to access it from the browser as well, but things seem to be more complicated than that.
I'm using Phoenix framework and I already added
plug Plug.Static,
at: "/output", from: Path.expand("output/"), gzip: false
to my endpoint.ex. Apparently it works on localhost but not on Heroku?
I'll turn to Amazon S3 if indeed what I'm trying to do is impossible. However, I want to avoid using S3 as much as possible since this should be a really simple task and I don't want to add another set of credentials/extra complexity to manage. Or is there any other way to achieve what I'm trying to do without having to write the file to the file system first and then redirecting the user to it?
I know it doesn't strictly answer your question, but if you don't mind generating the CSV every time it is requested, you can use Controller.send_download/3 and serve arbitrary payload as a download (in your case the contents of the CSV).
Naturally you could store the generated CSVs somewhere (like the database or even ets) and generate them "lazily".
I manage a team of designers working on Indesign.
When we work on a project, it often happens that a designer has to work on the project of another. We work with Dropbox for Business.
But when we take the work of another designer, there is often missing links and fonts.
Is there a plugin or a way to develop a plugin that would allow, when we create a new indd file (or for the protection of the same file):
Automatically create a "Links" folder and another "Document fonts" at side of the indd file
Systematically add a new link or new typography in the corresponding folder?
To simplify: each action on font or on a link, make a kind of "Indesign Package" in real time?
If this is not a solution, do you have any solutions to meet this need?
I don't know of a specific script or plugin that does this.
However, it should be possible to write a script with an eventhandler with a beforeClose event that runs certain script commands every time a user closes a document (or even every time a user adds, changes or deletes a link). At this point the script could run some copyLink commands on all the images and fonts (?) placing them all in the folders next to the document.
The whole script could be made a startup script, so it becomes active anytime any user runs InDesign.
(I'm actually not sure, if fonts can be copied so easily. Worst case scenario would be that the script would need to run some packaging command to gather the fonts somewhere, copy them over to where you need them and then delete the rest of the temporary package.)
Did you consider Creative Cloud Libraries ? They are meant to allow sharing assets within a team. Apart form that, you users would need to have a same access to the file system (a common drive letter for the network path for example).
Another solution would be to use a DAM solution so users would link files from the DAM.
Eventually, you could sure think of a script as mdomino offered.
This question has been asked around several time. Many programs like Dropbox make use of some form of file system api interaction to instantaneously keep track of changes that take place within a monitored folder.
As far as my understanding goes, however, this requires some daemon to be online at all times to wait for callbacks from the file system api. However, I can shut Dropbox down, update files and folders, and when I launch it again it still gets to know what the changes that I did to my folder were. How is this possible? Does it exhaustively search the whole tree in search for updates?
Short answer is YES.
Let's use Google Drive as an example, since its local database is not encrypted, and it's easy to see what's going on.
Basically it keeps a snapshot of the Google Drive folder.
You can browse the snapshot.db (typically under %USER%\AppData\Local\Google\Drive\user_default) using DB browser for SQLite.
Here's a sample from my computer:
You see that it tracks (among other stuff):
Last write time (looks like Unix time).
checksum.
Size - in bytes.
Whenever Google Drive starts up, it queries all the files and folders that are under your "Google Drive" folder (you can see that using Procmon)
Note that changes can also sync down from the server
There's also Change Journals, but I don't think that Dropbox or GDrive use it:
To avoid these disadvantages, the NTFS file system maintains an update sequence number (USN) change journal. When any change is made to a file or directory in a volume, the USN change journal for that volume is updated with a description of the change and the name of the file or directory.
I'm working on a project and I need to dynamically check what is in onhe of my folder. The idea is that I have the id of a quest, and there is a folder name after that id. My code needs to check if this folder exist AND if there is something in it. After that, it show all the picture inside that folder. The goal is that I will just have to add picture in a folder to have them appear in my game.
I tried to find a way to check the content of my folder, but everyone say that I need flash.filesystem, BUT it means that I need to use AIR. AIR does NOT work in FireFox or any other browser.
Here is the website that make me understood that:
http://www.experts-exchange.com/Software/Photos_Graphics/Web_Graphics/Macromedia_Flash/Q_26118847.html
How can I explore the content of my folders then?
There is absolutely no way to explore the local file system without user interaction in Flash. If you want to do it, you must make an AIR application, which is not browser-based. This is a security feature that is imposed by each browser (you can't do it in JS either) and implemented identically by Adobe.
You can use FileReference to allow a user to select file(s) for Flash to have access to or save a file, but that is the most interaction with the filesystem that will be possible without opening AIR (which is also not limitless. Even with AIR, you won't have full access to the file system and will be locked out of certain directories and prevented from doing certain things)
If the folders are on your server you'll need to rely on a server side script to do the job and pass the result to your app.
If you mean folders on client side computer it's not gonna be possible for security reason.
I have a web-app(browser based) which needs to access a folder full of icons that resides outside the web folder.
This folder MUST be outside the web folder, and would ideally exist outside the project folder all together
however, when specifying the path to the folder neither "../" or making use of a symlink will work
when the page attempts to load the image I always get
"[web] GET /Project|web/icons/img.png => Could not find asset Project|web/icons/img.png."
however I set the image source to "../icons/img.png"
how can i get dart to access this file properly
PS: I attempted a symlink to another part of the filesystem (where the images would be kept ideally) however this did not work either.
The web server integrated into DartEditor or pub serve only serves directories that are added as folders to the files view. When you add the folder to DartEditor you should be able to access the files. This is just for development.
You have also to find a solution for when you deploy your server app. It would be a hazardous security issue when you could access files outside the project directory. Where should the server draw the line? If this would be possible your entire server would be accessible to the world.
Like #Robert asked, I also have a hard time imaging why the files must not be in the project folder.
If you want to reuse the icons/images between different projects you could create a resource package that contains only those images and add them as a dependency to your project.
If you want a better answer you need to provide more information about your requirements.
If you wrote your own server (by using the HttpServer class) it may be possible to use the VirtualDirectory to server your external files.
Looking at look the dartiverse_search example may give you some ideas.
You could put them in the lib directory and refer to them via /packages/Project/...
Or in another package, in which case they would be in a different place in the file system. But as other people have said, your requirement seems odd.