Get-MongoEventLog-vNext.ps1

function Get-MongoEventLog (
	[Parameter(Position=0)][string] $Regex = '.*',
	[Parameter(Position=1)][string] $Log = $null
)
{
	Add-Type -Path "bin\MongoDB.Bson.dll";
	Add-Type -Path "bin\MongoDB.Driver.dll";

	$db = [MongoDB.Driver.MongoDatabase]::Create('mongodb://localhost/powershell');
	[MongoDB.Driver.MongoCollection] $collection = $db['eventlogs']

	[MongoDB.Driver.QueryDocument] $query = [MongoDB.Driver.QueryDocument]@{ 'Source' = @{ '$regex' = $Regex; '$options' = 'i' } }
	if (-not [String]::IsNullOrEmpty($Log)) { $query['Log'] = $Log }


	$collection.Find($query).SetLimit(10) | ForEach-Object {
		# Notice how ToHashTable() saves us a lot of keystrikes.
		New-Object PSObject -Property $_.ToHashTable()
	} | Select-Object HostName, Log, Source, InstanceId, Index, Message
}
# Example
Get-MongoEventLog 'service'