Scripts/Update-MongoFiles.ps1
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<#
.Synopsis Updates the file system snapshot collection. .Description WARNING: This is a toy for making some test data, it may change without a notice. But it may be useful for some analysis and tracking file changes. Use it as the base for your own tool. The script scans the specified directory tree, updates file and directory documents, and then removes orphan documents which have not been updated. Changes are optionally logged to another collection. Server: local; database: test; collections: files, files_log (optional). Collection "files" ._id : full path .mode : system attributes .time : file write or folder create time .len : file length .name : item name .ext : file extension .seen : last check time Collection "files_log" (optional) ._id : full path .seen : check time .log : array of item snapshots .op : 0: created, 1: changed, 2: removed .Parameter Path Specifies one or more literal directory paths to be processed. .Parameter CollectionName Specifies the collection name. Default: files (implies files_log). .Parameter Log Tells to log created, changed, and removed items to files_log. .Parameter Split Tells to perform parallel data processing using SplitPipeline. Module: <https://github.com/nightroman/SplitPipeline> .Outputs The result object with statistics .Path : the input path .Created : count of created .Changed : count of changed .Removed : count of removed .Elapsed : elapsed time span #> param( [Parameter(Position=0)][string[]]$Path = '.', [string]$CollectionName = 'files', [switch]$Log, [switch]$Split ) # Gets input items from the input paths. function Get-Input { Get-ChildItem -LiteralPath $Path -Force -Recurse -ErrorAction Ignore } # Gets the exact case path for the given path. function Resolve-Case($Path) { $directory = [IO.DirectoryInfo]$Path if ($directory.Parent) { Join-Path (Resolve-Case $directory.Parent.FullName) $directory.Parent.GetFileSystemInfos($directory.Name)[0].Name } else { $directory.Name.ToUpper() } } # Connects collections and initializes data. Dot-source this function, it # makes the result variables $Collection, $CollectionLog, $Update, $info. function Connect-Data { # connect the main and optional log collection Import-Module Mdbc Connect-Mdbc . test $CollectionName $CollectionLog = Get-MdbcCollection ($CollectionName + '_log') # update time expression used in several places $Update = @{'$set' = @{seen = $Now}} # result info, init counters $info = 1 | Select-Object Path, Created, Changed, Removed, Elapsed $info.Created = $info.Changed = $info.Removed = 0 } # Updates documents related to input items. function Update-Data {process{ $isFile = !$_.PSIsContainer # data with _id = FullName and main changing fields # (omit LastWriteTime for folders and CreationTime) $data = New-MdbcData -Id $_.FullName $data.mode = [int]$_.Attributes if ($isFile) { $data.time = $_.LastWriteTime $data.len = $_.Length } else { $data.time = $_.CreationTime } # query by main changing data and set Seen $r = Update-MdbcData $data $Update -Result # modified means $data is found, i.e. the same -> done if ($r.ModifiedCount) {return} # prepare to save changed data, add other fields $data.name = $_.Name if ($isFile) { $data.ext = $_.Extension } $data.seen = $Now # save changed data $qId = @{_id = $_.FullName} $r = Set-MdbcData $qId $data -Add -Result $op = [int]$r.ModifiedCount if ($op) { ++$info.Changed } else { ++$info.Created } # no log? done if (!$Log) {return} # log: remove some fields, set Op = created (0) or changed (1) $data.Remove('_id') $data.Remove('name') $data.Remove('ext') $data.op = $op Update-MdbcData $qId -Collection $CollectionLog -Add -Update @{ '$set' = @{seen = $Now; op = $op} '$push' = @{log = $data} } }} ### $ErrorActionPreference = 'Stop' Set-StrictMode -Version Latest # same time for all $Now = [DateTime]::Now # full and exact case paths $Path = foreach($_ in $Path) { Resolve-Case ($PSCmdlet.GetUnresolvedProviderPathFromPSPath($_)) } ### Update documents of existing input files and folders Write-Host "Updating documents for $Path ..." . Connect-Data $info.Path = $Path $time = [Diagnostics.Stopwatch]::StartNew() if ($Split) { # parallel processing using SplitPipeline Import-Module SplitPipeline $param = @{ Verbose = $true Count = 2, 4 Load = 500, 5000 Function = 'Connect-Data', 'Update-Data' Variable = 'CollectionName', 'Log', 'Now' Script = { $input | Update-Data } Begin = { . Connect-Data } End = { $info } } Get-Input | Split-Pipeline @param | .{process{ $info.Created += $_.Created $info.Changed += $_.Changed }} } else { # normal processing Get-Input | Update-Data } ### Compose some query parts (easier to read and test separately) # query _id in the input path, use regex to match the substring $qIdInPath = @{ _id = @{ '$in' = @( foreach($_ in $Path) { if (!$_.EndsWith('\')) {$_ += '\'} [regex]('^' + [regex]::Escape($_)) } ) } } # query removed from the input paths ~ with older .seen $qNotSeen = @{'$and' = $qIdInPath, @{seen = @{'$lt' = $Now}}} # and just in case unknown data ~ .seen is not 'date' $qUnknown = @{seen = @{'$not' = @{'$type' = 'date'}}} # final query for removing data $qRemove = @{'$or' = $qUnknown, $qNotSeen} ### Remove documents of removed files and folders Write-Host "Removing documents for $Path ..." if ($Log) { # log: get data to remove, remove and log Get-MdbcData $qRemove | .{process{ ++$info.Removed # remove $qId = @{_id = $_._id} Remove-MdbcData $qId # log: remove some fields, set Op = removed (2) $_.Remove('_id') $_.Remove('name') $_.Remove('ext') $_.op = 2 Update-MdbcData $qId -Collection $CollectionLog -Add -Update @{ '$set' = @{seen = $Now; op = 2} '$push' = @{log = $_} } }} } else { # no log: just remove many and get result $r = Remove-MdbcData $qRemove -Many -Result $info.Removed += [int]$r.DeletedCount } ### Complete and output results $info.Elapsed = $time.Elapsed $info |