What it does
The archive action saves the print stream to the specified folder. RPM constructs the filename from print job data using your specification. You also specify whether to create a new file, overwrite an existing file or append to a file. Of course, you specify the folder path for storing the file and several related items.
The archive action gives you full control over the target folder, credentials you'd need if the folder is shared, and of course all the file naming options you would need.
When we first introduced RPM, the actions were text print, raw print and filter (program execution) which were then called "queue types". The most frequently requested addition was the archive feature. Originally we supported archive by letting the filter command line be blank. Ultimately, in RPM 5.0 we added it as a proper action.
For a more thorough discussion on how this transform is used please see the RPM Archive Portal page.
In RPM version 220.127.116.111 we significantly reworked the way the archive action works with output files. This was done in part to work better with third-party folder watchers, or directory monitors.
We also discovered a vulnerability with the append operation that we corrected.
How we improved folder watcher support
Before, RPM would create an output file, or open an existing file to append. As the print job processing progressed, RPM from time to time would write.to the output file.
This was fine for normal operations, but with folder watchers, the user never knew how long it was going to take for RPM to finish. This created an instability using folder watchers in a production environment.
Now, RPM writes to a temp file. When the job is complete, the temp file is moved or copied into position. This works across disk drives so there is no need to be concerned that you can't correctly archive to another drive. We did all our testing in a two-drive environment.
How we improved append support
Before, we opened the output file for append and wrote to it when data was available.
The only problem with this approach, we realized, is that if someone was processing multiple jobs at a time that happened to write to the same location; or if another program had that same file open; data may be lost or corrupted.
The archive action now opens the file with exclusive access, if we are appending. This should prevent problems with concurrent writes from multiple jobs or from another process at the same time RPM is writing to the file.
- Credentials Select the username, password, and domain for an account with sufficient access to the destination folder. You use this with shared folders, therefore this setting is optional. Note the value ".\No Credentials" means no shared access.
- Add User RPM maintains a set of user credentials for use with shared disks and printers. If you want to create a new set of credentials, do that here. When the Add User dialog is closed, the user interface will attempt to validate the login to ensure valid credentials.
- Location Click Browse to locate the folder in which you would like to save these documents. Note: If you browse to a mapped network drive, RPM will automatically convert the destination folder to a UNC path. This setting is required.
- Monitor this drive for available space If this is set, RPM will query the device for available space before attempting to add a file, so we don't find ourselves in a position of filling a disk without reporting. This setting is optional.
- File Name Formatting Use the Variables droplist along with the Insert button and the Template mas to customize the name of the file(s) to be created. Note: Many of the file format options are limited to jobs received using the LPR/LPD protocol. If jobs are received using other methods, most of these tags will be blank.
- Allow spaces in file names If this is not selected, RPM will replace any spaces with an underscore.
- File Creation If a file by the same name already exists; select whether to create a unique filename, append the contents of the incoming file to an existing file, or overwrite an existing file.