Private/Caching.ps1
function Get-PodeCacheInternal { param( [Parameter(Mandatory = $true)] [string] $Key, [switch] $Metadata ) $meta = $PodeContext.Server.Cache.Items[$Key] if ($null -eq $meta) { return $null } # check ttl/expiry if ($meta.Expiry -lt [datetime]::UtcNow) { Remove-PodeCacheInternal -Key $Key return $null } # return value an metadata if required if ($Metadata) { return $meta } # return just the value as default return $meta.Value } function Set-PodeCacheInternal { param( [Parameter(Mandatory = $true)] [string] $Key, [Parameter(Mandatory = $true)] [object] $InputObject, [Parameter()] [int] $Ttl = 0 ) # crete (or update) value value $PodeContext.Server.Cache.Items[$Key] = @{ Value = $InputObject Ttl = $Ttl Expiry = [datetime]::UtcNow.AddSeconds($Ttl) } } function Test-PodeCacheInternal { param( [Parameter(Mandatory = $true)] [string] $Key ) # if it's not in the cache at all, return false if (!$PodeContext.Server.Cache.Items.ContainsKey($Key)) { return $false } # fetch the items metadata, and check expiry. If it's expired return false. $meta = $PodeContext.Server.Cache.Items[$Key] # check ttl/expiry if ($meta.Expiry -lt [datetime]::UtcNow) { Remove-PodeCacheInternal -Key $Key return $false } # it exists, and isn't expired return $true } function Remove-PodeCacheInternal { param( [Parameter(Mandatory = $true)] [string] $Key ) Lock-PodeObject -Object $PodeContext.Threading.Lockables.Cache -ScriptBlock { $null = $PodeContext.Server.Cache.Items.Remove($Key) } } function Clear-PodeCacheInternal { Lock-PodeObject -Object $PodeContext.Threading.Lockables.Cache -ScriptBlock { $null = $PodeContext.Server.Cache.Items.Clear() } } function Start-PodeCacheHousekeeper { if (![string]::IsNullOrEmpty((Get-PodeCacheDefaultStorage))) { return } Add-PodeTimer -Name '__pode_cache_housekeeper__' -Interval 10 -ScriptBlock { $keys = Lock-PodeObject -Object $PodeContext.Threading.Lockables.Cache -Return -ScriptBlock { if ($PodeContext.Server.Cache.Items.Count -eq 0) { return } return $PodeContext.Server.Cache.Items.Keys.Clone() } if (Test-PodeIsEmpty $keys) { return } $now = [datetime]::UtcNow foreach ($key in $keys) { if ($PodeContext.Server.Cache.Items[$key].Expiry -lt $now) { Remove-PodeCacheInternal -Key $key } } } } |