CacheManager

Provide a caching mechanism to files in any powershell script.

How to use

#Imports the module!
import-module CacheManager;

#Creates a new cache manager object!
$MyCache = New-CacheManager;

#Specify a cache manager directory
$MyCache.cacheDirectory = 'C:\MyCache'

#Initialize the cache manager!
#At this point cache manager will prepare the cache directory and your internal database.
#If the cache directory was previously used to create a cache, it will load the database.
#This allows cache manager persist all cache information between powershell sessions using same directory.
$MyCache.init()

#Start caching your remote files!
$PathToMyFile = $MyCache.getFile('\\MyRemoteServer\MyDir\MyFile.txt');

#The cache manager will manage the copy of remote file to local file!;
#When you update remote file, a next call to getFile will update local file!

#If you have a list of you remotes files, you can peridically update them!

#for example, imagine that you have a script that loads a lot of sql files from network to execute against a sql server instance!
#Imagine that you execute it in a loop...
$MyFilesOriginal = gci '\\MyRemote\MyFiles\*.sql' | %{$_.FullName};

$execute = $true;

while($execute){

<<<<<<< HEAD

  #For each file, gets the cached version!
  $MyFilesOriginal | %{
       #The getFile method will return a file path.
       #If file is remote, the CacheManager will atempt caches it into cache directory and return the path to the file.
       #The same path passed in parameter is returned in following circustantes:
       #    - The file nevers cached, and remote is not acessible.
       #    - The file already cached, but local copy was deleted and remote cannot acessed for cache again.
       #The seconds parameter in method specify frequency the cache manager will check the file.
       #    This helps avoid contact remote every time you call method. The method will calculate next time for each file based on this value and last time it #    checks.
       $CurrentFile = $MyCache.getFile($_.FullName, 300);
       $results     = Invoke-SqlCmd -ServerInstance MyServer -Database mydatabase -InputFile $CurrentFile;
    }
    
    #Waits for a time...
    Start-Sleep -s 120;
}