Local File driver provides monitoring for files located on the AggreGate server.
Driver Information
Driver Plugin ID: |
com.tibbo.linkserver.plugin.device.file |
Global Settings
None defined.
User Level Settings
None defined.
Local file monitoring can be configured using the following properties:
Field Name |
Field Description |
Path |
Specifies the file location (full path). |
Enables/disables reading of the file contents. |
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Allows or prohibits modification of the file contents. |
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Calculate Checksum |
Enables/disables file checksum calculation. |
Device Settings
Local File device driver creates two Device setting variables:
Variable Name |
Variable Description |
Comments |
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attributes |
File Attributes |
Contains the file attributes:
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contents |
File Contents |
Read-only (if Read Contents option is on) or editable (if Allow Editing option is also on) file contents. |
Device Operations
No operations provided by the driver.
Device Events
No events provided by the driver.
Connection Handling
A file device is deemed Online if the selected file exists.
Synchronization Details
As Local File is a Device Driver, it performs a "synchronization" with AggreGate Server like any other driver. During synchronization, the attributes and contents of the file are obtained. Also, if editing is allowed and a user has edited server copy of file contents, the new contents are written to the file.
Local File Status
If all I/O operations with the file are successfully finished, the local file Device is deemed "online".
If no file exists at the path specified, or any error was encountered while accessing the file, Local File Device is considered "offline".
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If Local File is "offline" file, attributes and contents can still be read and analyzed by system facilities. They will, however, have values obtained when the file was accessed successfully for the last time. |
