Tools/Logging.ps1
|
function Get-PodeLogger { param ( [Parameter(Mandatory=$true)] [ValidateNotNullOrEmpty()] [string] $Name ) return $PodeSession.Loggers[$Name] } function Add-PodeLogEndware { param ( [Parameter(Mandatory=$true)] [ValidateNotNull()] $WebEvent ) $WebEvent.OnEnd += { param($s) $obj = New-PodeLogObject -Request $s.Request -Path $s.Path Add-PodeLogObject -LogObject $obj -Response $s.Response } } function New-PodeLogObject { param ( [Parameter(Mandatory=$true)] [ValidateNotNull()] $Request, [Parameter()] [string] $Path ) return @{ 'Host' = $Request.RemoteEndPoint.Address.IPAddressToString; 'RfcUserIdentity' = '-'; 'User' = '-'; 'Date' = [DateTime]::Now.ToString('dd/MMM/yyyy:HH:mm:ss zzz'); 'Request' = @{ 'Method' = $Request.HttpMethod.ToUpperInvariant(); 'Resource' = $Path; 'Protocol' = "HTTP/$($Request.ProtocolVersion)"; 'Referrer' = $Request.UrlReferrer; 'Agent' = $Request.UserAgent; }; 'Response' = @{ 'StatusCode' = '-'; 'StatusDescription' = '-'; 'Size' = '-'; }; } } function Add-PodeLogObject { param ( [Parameter(Mandatory=$true)] [ValidateNotNull()] $LogObject, [Parameter(Mandatory=$true)] [ValidateNotNull()] $Response ) if ($PodeSession.DisableLogging -or (Get-Count $PodeSession.Loggers) -eq 0) { return } $LogObject.Response.StatusCode = $Response.StatusCode $LogObject.Response.StatusDescription = $Response.StatusDescription if ($Response.ContentLength64 -gt 0) { $LogObject.Response.Size = $Response.ContentLength64 } $PodeSession.RequestsToLog.Add($LogObject) | Out-Null } function Start-LoggerRunspace { if ((Get-Count $PodeSession.Loggers) -eq 0) { return } $script = { # simple safegaurd function to set blank field to a dash(-) function sg($value) { if (Test-Empty $value) { return '-' } return $value } # convert a log request into a Combined Log Format string function Get-RequestString($req) { $url = "$(sg $req.Request.Method) $(sg $req.Request.Resource) $(sg $req.Request.Protocol)" return "$(sg $req.Host) $(sg $req.RfcUserIdentity) $(sg $req.User) [$(sg $req.Date)] `"$($url)`" $(sg $req.Response.StatusCode) $(sg $req.Response.Size) `"$(sg $req.Request.Referrer)`" `"$(sg $req.Request.Agent)`"" } # helper variables for files $_files_next_run = [DateTime]::Now.Date # main logic loop while ($true) { # if there are no requests to log, just sleep if ((Get-Count $PodeSession.RequestsToLog) -eq 0) { Start-Sleep -Seconds 1 continue } # safetly pop off the first log request from the array $r = $null lock $PodeSession.RequestsToLog { $r = $PodeSession.RequestsToLog[0] $PodeSession.RequestsToLog.RemoveAt(0) | Out-Null } # convert the request into a log string $str = (Get-RequestString $r) # apply log request to supplied loggers $PodeSession.Loggers.Keys | ForEach-Object { switch ($_.ToLowerInvariant()) { 'terminal' { $str | Out-Default } 'file' { $details = $PodeSession.Loggers[$_] $date = [DateTime]::Now.ToString('yyyy-MM-dd') # generate path to log path and date file if ($null -eq $details -or (Test-Empty $details.Path)) { $path = (Join-ServerRoot 'logs' "$($date).log" ) } else { $path = (Join-Path $details.Path "$($date).log") } # append log to file $str | Out-File -FilePath $path -Encoding utf8 -Append -Force # if set, remove log files beyond days set (ensure this is only run once a day) if ($null -ne $details -and [int]$details.MaxDays -gt 0 -and $_files_next_run -lt [DateTime]::Now) { $date = [DateTime]::Now.AddDays(-$details.MaxDays) Get-ChildItem -Path $path -Filter '*.log' -Force | Where-Object { $_.CreationTime -lt $date } | Remove-Item $_ -Force | Out-Null $_files_next_run = [DateTime]::Now.Date.AddDays(1) } } { $_ -ilike 'custom_*' } { Invoke-ScriptBlock -ScriptBlock $PodeSession.Loggers[$_] -Arguments @{ 'Log' = $r; 'Lockable' = $PodeSession.Lockable; } } } } # small sleep to lower cpu usage Start-Sleep -Milliseconds 100 } } Add-PodeRunspace -Type 'Main' -ScriptBlock $script } function Logger { param ( [Parameter(Mandatory=$true)] [ValidateNotNullOrEmpty()] [string] $Name, [Parameter()] [object] $Details = $null ) # is logging disabled? if ($PodeSession.DisableLogging) { Write-Host "Logging has been disabled for $($Name)" -ForegroundColor DarkCyan return } # lower the name $Name = $Name.ToLowerInvariant() # ensure the logger doesn't already exist if ($PodeSession.Loggers.ContainsKey($Name)) { throw "Logger called $($Name) already exists" } # ensure the details are of a correct type (inbuilt=hashtable, custom=scriptblock) $type = (Get-Type $Details) if ($Name -ilike 'custom_*') { if ($null -eq $Details) { throw 'For custom loggers, a ScriptBlock is required' } if ($type.Name -ine 'scriptblock') { throw "Custom logger details should be a ScriptBlock, but got: $($type.Name)" } } else { if ($null -ne $Details -and $type.Name -ine 'hashtable') { throw "Inbuilt logger details should be a HashTable, but got: $($type.Name)" } } # add the logger, along with any given details (hashtable/scriptblock) $PodeSession.Loggers[$Name] = $Details # if a file logger, create base directory (file is a dummy file, and won't be created) if ($Name -ieq 'file') { # has a specific logging path been supplied? if ($null -eq $Details -or (Test-Empty $Details.Path)) { $path = (Split-Path -Parent -Path (Join-ServerRoot 'logs' 'tmp.txt')) } else { $path = $Details.Path } Write-Host "Log Path: $($path)" -ForegroundColor DarkCyan New-Item -Path $path -ItemType Directory -Force | Out-Null } # if this is the first logger, start the logging runspace if ($PodeSession.Loggers.Count -eq 1) { Start-LoggerRunspace } } |