Public/Update-AUPackages.ps1

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# Author: Miodrag Milic <miodrag.milic@gmail.com>
# Last Change: 13-Sep-2016.

<#
.SYNOPSIS
    Update all automatic package in the current directory
 
.DESCRIPTION
    Function Update-AUPackages will iterate over update.ps1 scripts and execute each. If it detects
    that package is updated it will cpack it and push it. For push to work, specify your API key in the
    file 'api_key' in the script's directory.
 
.EXAMPLE
    Update-AUPackages p* @{ Threads = 5; Timeout = 10 }
 
    Update all automatic packages in the current directory that start with letter 'p' using 5 threads
    and web timeout of 10 seconds.
#>

function Update-AUPackages {
    [CmdletBinding()]
    param(
        # Filter package names. Supports globs.
        [string] $Name,

        <#
        Hashtable with options:
          Threads - Number of background jobs to use, by default 10
          Timeout - WebRequest timeout in seconds, by default 100
          Force - Force package update even if no new version is found
          Push - Set to true to push updated packages to chocolatey repository
          Mail - Hashtable with mail notification options: To, Server, UserName, Password, Port, EnableSsl
          Script - Specify script to be executed at the start and after the update. Script accepts two arguments:
                          $PHASE - can be 'start' or 'end'
                          $ARG - in start phase it is the list of packages to be updated;
                                    in end phase it is the info object that contains information about the previous run;
        #>

        [HashTable] $Options=@{}
    )

    function Load-NuspecFile() {
        $nu = New-Object xml
        $nu.psbase.PreserveWhitespace = $true
        $nu.Load($nuspecFile)
        $nu
    }

    $cd = $pwd
    $startTime = get-date

    if (!$Options.Threads) { $Options.Threads = 10 }
    if (!$Options.Timeout) { $Options.Timeout = 100 }
    if (!$Options.Force)   { $Options.Force   = $false }
    if (!$Options.Push)    { $Options.Push    = $false }

    Remove-Job * -force #remove any previously run jobs

    $tmp_dir = "$ENV:Temp\chocolatey\au"
    mkdir -ea 0 $tmp_dir | out-null
    ls $tmp_dir | ? PSIsContainer -eq $false | rm   #clear tmp dir files

    $threads    = New-Object object[] $Options.Threads
    $result     = @()
    $script_err = 0

    $aup = Get-AUPackages $Name
    $j = 0

    Write-Host 'Updating' $aup.Length  'automatic packages at' $($startTime.ToString("s") -replace 'T',' ') $(if ($Options.Force) { "(forced)" } else {})

    if ($Options.Script) { try { & $Options.Script 'START' $aup | Write-Host } catch { Write-Error $_; $script_err += 1 } }
    while( $true ) {

        # Check for completed jobs
        foreach ($job in (Get-Job | ? state -ne 'Running')) {
            $p += 1

            if ( 'Failed', 'Completed' -notcontains $job.State) { 
                Write-Host "Invalid job state for $($job.Name): " + $job.State
            }
            else {
                Write-Verbose ($job.State + ' ' + $job.Name)
                Receive-Job $job | set pkg
                Remove-Job $job

                if ($job.State -eq 'Failed') { continue }

                $message = $pkg.Name + ' '
                $message += if ($pkg.Updated) { 'is updated to ' + $pkg.RemoteVersion } else { 'has no updates' }
                if ($pkg.Updated -and $Options.Push) {
                    $message += if (!$pkg.Pushed) { ' but push failed!' } else { ' and pushed'}
                }
                if ($pkg.Error) {
                    $message = "$($pkg.Name) ERROR: "
                    $message += $pkg.Error.ToString() -split "`n" | % { "`n" + ' '*5 + $_ }
                }
                Write-Host ' ' $message

                $result += $pkg
            }
        }

        # Check if all packages are done
        $job_count = Get-Job | measure | % count
        if ($p -eq $aup.length) { break }

        # Just sleep a bit and repeat if all threads are busy
        if (($job_count -eq $Options.Threads) -or ($j -eq $aup.length)) { sleep 1; continue }

        # Start a new thread
        $package_path = $aup[$j++]
        $package_name = Split-Path $package_path -Leaf
        Write-Verbose "Starting $package_name"
        Start-Job -Name $package_name {

            import-module au
            cd $using:package_path
            $out = "$using:tmp_dir\$using:package_name"

            $global:au_Timeout = $using:Options.Timeout
            $global:au_Force   = $using:Options.Force
            $global:au_Result  = 'pkg'

            try {
                $pkg = ./update.ps1 6> $out
            } catch {
                $pkg.Error = $_
            }
            if (!$pkg) { throw "'$using:package_name' update s script returned nothing" }

            $pkg = $pkg[-1]
            $type = ($pkg | gm).TypeName
            if ($type -ne 'AUPackage') { throw "'$using:package_name' update script didn't return AUPackage but: $type" }

            if ($pkg.$Updated -and $using:Options.Push) {
                $pkg.Result += Push-Package
                if ($LastExitCode -eq 0) { $pkg.Pushed = $true }
            }

            $pkg
        } | Out-Null
    }
    $result = $result | sort PackageName

    $info = get-info
    if ($Options.Script) { try { & $Options.Script 'END' $info | Write-Host } catch { Write-Error $_; $script_err += 1 } }

    @('') + $info.stats + '' | Write-Host
    send-notification

    $result
}

function send-notification() {
    if (!($info.error_count.total -and $Options.Mail)) { return }

    $body = "$($info.error_count.total) errors during update`n"
    $body += "Attachment contains complete output of the run, you can load it using Import-CliXML cmdlet.`n`n"
    $body += $info.error_info

    try {
        send-mail $Options.Mail $body -ea Stop
        Write-Host ("Mail with errors sent to " + $Options.Mail.To)
    } catch { Write-Error $_ }
}

function get-info {
    $errors = $result | ? { $_.Error }
    $info = [PSCustomObject]@{
        result = [PSCustomObject]@{
            all     = $result
            errors  = $errors
            ok      = $result | ? { !$_.Error.Length }
            pushed  = $result | ? Pushed
            updated = $result | ? Updated
        }

        error_count = [PSCustomObject]@{
            update  = $errors | ? {!$_.Updated} | measure | % count
            push    = $errors | ? {$_.Updated -and !$_.Pushed} | measure | % count
            total   = $errors | measure | % count
        }
        error_info  = ''

        packages  = $aup
        startTime = $startTime
        minutes   = ((Get-Date) - $startTime).TotalMinutes.ToString('#.##')
        pushed    = $result | ? Pushed  | measure | % count
        updated   = $result | ? Updated | measure | % count
        stats     = ''
        options   = $Options
    }
    $info.stats = get-stats
    $info.error_info = $errors | % {
        $s = "`nPackage: " + $_.Name + "`n"
        $_.Error
    }

    $info
}

function get-stats {
    "Finished {0} packages after {1} minutes." -f $info.packages.length, $info.minutes
    "{0} packages updated and {1} pushed." -f $info.updated, $info.pushed
    "{0} total errors - {1} update, {2} push." -f $info.error_count.total, $info.error_count.update, $info.error_count.push
    if ($Options.Script) { "$script_err user script errors." }
}

function send-mail($Mail, $Body) {
    $from = "Update-AUPackages@{0}.{1}" -f $Env:UserName, $Env:ComputerName
    $msg  = New-Object System.Net.Mail.MailMessage $from, $Mail.To
    $msg.Subject    = "$($info.error_count.total) errors during update"
    $msg.IsBodyHTML = $true
    $msg.Body       = "<body><pre>$Body</pre></body>"

    $info | Export-CliXML "$Env:TEMP\au_info.xml"
    $attachment = new-object Net.Mail.Attachment( "$Env:TEMP\au_info.xml" )
    $msg.Attachments.Add($attachment)

    $smtp = new-object Net.Mail.SmtpClient($Mail.Server)
    if ($Mail.UserName) {
        $smtp.Credentials = new-object System.Net.NetworkCredential($Mail.UserName, $Mail.Password)
    }
    if ($Mail.Port) { $smtp.port = $Mail.Port }
    $smtp.EnableSsl = $Mail.EnableSsl
    $smtp.Send($msg)
}

Set-Alias updateall Update-AuPackages