We have different streams for different environments. It is a grail project. So there is a property file called application.properties which has a property called app.version. I want that to be updated automatically post every promote done on the stream. Each stream will have different version number. Trigger server_post_promote_trig will be used to handle the post promote operation, but I am not sure how to access the files in the stream through script. I tried to give the path as /Folder1/file as reflected in the xml trigger input file, but I cannot update the file as trigger perl file complains it cannot find the file.
Any help is much appreciated.
If I understand your question correctly. You want to increment the version in a file under source control when ever a promotion occurs in the stream. If this is correct, you need to create a workspace off said stream which will edit/keep/promote the new version of this file. I would create a separate script that gets called by the server_post_promote trigger whenever a promotion occurs in this stream. This script would be placed under src control which is accessible in the workspace you created above.
In Accurev, files can only be modified via a workspace. As this is the case It may be better to implement a pre promote trigger to update this version information in the file when the user is performing the workspace to stream promote.
This would be similar to the existing Addheader script that can be found in the examples directory on the accurev server.
Also, within the script, you will probably want to build in logic to detect the promotion of the version file, to block updating the file again.
Related
I am working on File Management System exactly like Dropbox in Cocoa.
My problem is when i edit any text file at that time NSFileSystemFileNumber is changed.
I want an unique NSFileSystemFileNumber even if that edited file is moved from the particular folder.
In short, I just want to know how to fetch that moved file's old or original path from the database.
Any alternate way to solve out this problem?
Thanks in Adv..!!
It depends on how the editor save functionality is implemented. Each editor will have different functionality and it sounds like the one you are using does the following:
Delete existing file.
Create new file.
Write file data.
Hence you get a new inode each time. Others might:
Truncate existing file.
Write file data.
which would result in the same inode each time.
There is nothing you can about this so you will need to track file changes using the name or something, not the inode.
We have a need to refactor a code base. The thing is that this will be done by one person and it would be desirable to avoid having the rest of the development team sitting idle while this job takes place.
We therefore tried the following scenario to see if it is possible to work in parallel.
Created file test.txt in directory first in developer A's workspace.
Promoted this file.
Updated developer B's workspace, thereby getting file test.txt
In A's workspace moved file test.txt to directory second.
Promoted this move.
In B's workspace edited file test.txt while it still resides in directory first (no update is made thereby emulating that work is done while refactoring is taking place).
Tried to promote and got a message saying that file test.txt had been modified (correct, file has been moved).
Tried to merge but got an error message saying that AccuRev can't merge since the file is missing in directory second (where it has been moved).
Tried to update B's workspace but that is not allowed since there is a modified file that needs to be merged first.
We are now stuck in a catch 22 situation.
We did try to place a fake file in directory second but that is not being recognized since this file does not belong to the workspace.
Has anyone out there tried something like this and gotten it to work?
It is of course possible to copy files but if there is a better way we would be grateful to hear about this. Or if this is a known bug or limitation in the tool.
We will contact also contact AccuRev support but I thought that I might be able to get some useful tips from the community.
Currently we are using AccuRev client 5.5.0.
Thanks for any suggestions on how to make the tool support this operation.
Referring to your steps 6 & 7: In AccuRev 5.5 after a file is edited and has a (modified) status you first have to keep before you can promote.
At step 8 you could try doing the merge from the Browse Versions view of the file. That way you can select any node to merge with, including the one that has been moved.
Step 9. An AccuRev update will not run successfully if one of the files to be updated is (modified). This is by design. You can keep the file so it has (kept)(member) status then run the update.
David Howland
After contact with AccuRev support the answer is that the only option available is to copy the file to some temp directory, revert the changes, update the workspace and copy the file into the new location in the workspace.
AccuRev will at least tell you which files you have to copy since they will be marked as modified.
I could experimentally verify David's remark to step 9 using AccuRev 5.5.
Let's assume that in the workspace of user A the file was moved and the move was promoted, while in the workspace of user B the file was modified and user B is about to promote his/her change.
Before the file is kept, it will not be possible for user B neither to merge nor to update. But after keeping the modified file the update is possible. The file is first marked as overlap, then the merge succeeds in the new location. Basically, this avoids creating a copy of the file, reverting it and restoring it in the new location after an update, which can be quite cumbersome, as AccuRev does not reveal easily where the move goes.
If user B promotes the modification before user A promotes the move, all goes smoothly, i.e. on update the moved file appears as overlap, but easily merges into the moved file in the new location.
Similar results are obtained when the two users have workspaces connected to different streams and the overlap occurs on a common parent stream. Only if the file is unkept, an error can occur (i.e. only if the move is promoted before the change). Then a simple keep allows to proceed as usual (update, merge, then promote).
Imagine there are 3 or more independent locations where a file can be modified. These locations communicate to each other through email or mail (direct flash drive restoration). Though there is a big room for flow - to make simultaneous editing to the file and screw up things, this client won't change too much. He rather call everyone that he is working on the last update or tell the other guys that he is waiting for third guy's last update. Anyway, at some point after several exchanges, due to one of participants unintentional error THE LAST VERSION of the file eventually gets mixed up. From this point everyone searches for the last version BY LOOKING THE CONTENT of the file.
This client wants to have a central location (he has actually, that is his PC's some location) and let everybody (including himself) copy any new or suspected new file to this location but prevent file's last version being copied. From this location he has to easily copy, send or open the file and work.
So, here is my concept (2 steps):
step 1: I made an ad to the main application where this file is created or edited. This ad prompts the user to give a version number to the file with every invoked save command from the editing application. In fact the file can be re-saved multiple times but not considered modified (file attributes creation, save etc. do not have great meaning here). This said the user can cancel my ad-in but have saved the file, not saving a new file version.
step 2: multiple solutions:
solution A: I'm thinking to have a folder/file watch and prevent the last version of the file being overwritten. As you know, FileSystemWatcher will fire the change/delete etc., events AFTER FACT so, I have to back copy overwritten file after the fact (w/ some tricks).
solution B: have a database to store all version of files and built-in some shell extension to extract/view files from the database. Move all copied/pasted files to the database (my program folder) and restore latest file in working folder after watcher fires change/delete event.
solution 3: find out built-in windows tools (API etc.) to greatly rely on it with some programming.
Any ideas?
Thanks in advance.
I am trying to watch files in a directory to determine when files are opened/accessed. I thought FileSystemWatcher would do the trick using the event Changed.
Problem is that some applications do not create a lock on the file they open/access or change either the date modified or date accessed (even after fsutil behavior set disablelastaccess 0). Notepad for example. Apparently is makes a copy of the file in memory and plays with it there until you save it. Nor does it update the Date Accessed.
How can I monitor a directory of files and be notified when a file is simply opened/accessed by any program (e.g. Notepad)? Files may be opened from another computer, not necessarily on the computer running the "watcher".
I found lots of similar questions but did not see one focusing on file "access".
This is quite normal. Updating an existing file is quite dangerous since it can cause irretrievable data loss. A disk error (like disk full) while writing is very bad news. The common algorithm used:
rename the original file
write a new file using the original name
no error: delete the renamed file
error: delete the new file, rename original file back
Clearly this doesn't cause a Changed event to be raised, no file was changed.
Sorry, I didn't read the question well enough. There is no notification whatsoever for an app just opening a file for reading. FSW can only detect changes to the file system. There is no ready alternative either, this requires a custom file system filter driver that snoops on driver requests. Like the kind that SysInternals' ProcMon utility uses. I'm not aware of such a driver ready for use in a C# program, you can't write them in C# either. This just isn't a common requirement.
On my site a user may upload a file (pic, zip, audio, video, whatever). He then may decide to replace it with a newer revision. This user may upload a file, make a post then decide to put up a new revision replacing the old (lets say its a large zip or tar.gz file). Theres a good chance people may be downloading it if he sent out an email or even im for the home user.
Problem. I need to replace the file and people may be downloading and it may be some minutes before it is deleted. I dont want my code to stall until i cant delete or check every second to see if its unused (especially bad if another user can start and he takes long creating a cycle).
How do i delete the file while users are downloading the file? i dont care if they stop i just care that the file can be replaced and new downloads are the new revision.
What about referencing the files indirectly?
A mapping script, maps a virtual file entry from your site to a real file . If the user wants to upload a new revision of his file you just update the mapping, not the real file.
You can install a daily task that scans all files and deletes all files without a mapping and without open connections.
lajuette's answer is right, the easiest solution is to work around the file locking altogether:
When a user uploads file foo.zip, internally store it as foo-v1.zip.
Create a mapping file somewhere (database, code, whatever) that maps foo.zip to foo-v1.zip.
Rather than exposing a direct link to the file, expose a link to a service that gets the file: mysite.com/Download?foo.zip or something. This service uses the mapping to determine which version of the file to send to the client.
When a new version is uploaded, create foo-v2.zip and update the mapping file.
It wouldn't be that hard to write a scheduled task that cleans up old, un-mapped files.
If your oppose to a database and If the filenames are in a fix format (such as user/id.ext) you could append the id with a revision number and enumerate the folder using a pattern (user/id-*) and use the latest revision.