# vSAN Summary Report Script.
#
# Created by: Go Watanabe / @gowatana
# Usage:
#   PowerCLI> .\get_vsan_summary.ps1 | Out-File -Encoding utf8 -PSPath vsan-report.txt

$report_width = 140

function report_header ($report_title) {
    "/" * $report_width
    "# $report_title"
    ""
}

function report_table ($report_title, $report) {
    "-" * $report_width
    "# $report_title"
    ""
    $report = $report | ft -AutoSize | Out-String
    $report.Trim()
    ""
}

report_header ("vSAN Cluster Summary: " + (Get-Date).DateTime)

# get vSAN Clusters.
$vsan_clusters = Get-Cluster | where {$_.VsanEnabled -eq $True} | sort Name

# Cluster
$vsan_cluster_config = $vsan_clusters | Get-VsanClusterConfiguration | select `
    Cluster,
    VsanEnabled,
    VsanDiskClaimMode,
    SpaceEfficiencyEnabled,
    StretchedClusterEnabled,
    WitnessHost
report_table "vSAN Cluster Configuration" $vsan_cluster_config

$vsan_clusters | % {
    $vsan_cluster = $_
    report_header ("vSAN Cluster: " + $vsan_cluster.Name)

    # DG
    $vsan_dgs = $vsan_cluster | Get-VsanDiskGroup
    $vsan_dg_info = $vsan_dgs | sort VMHost | select `
        VMHost,
        DiskGroupType,
        DiskFormatVersion,
        @{N="CacheDisk"; E={($_ | Get-VsanDisk | where {$_.IsCacheDisk -eq $true}).Count}},
        @{N="CapacityDisk"; E={($_ | Get-VsanDisk | where {$_.IsCacheDisk -ne $true}).Count}},
        Uuid
    report_table "vSAN DiskGroup" $vsan_dg_info

    # Disk
    $vsan_disks = $vsan_dgs | % {
        $dg = $_
        $hv = $dg.VMHost
        $dg | Get-VsanDisk | select `
            *,
            @{N="ESXi";E={$hv.Name}},
            @{N="DG_UUID";E={$dg.Uuid}}

    }
    $vsan_disk_info = $vsan_disks | select `
        ESXi,
        DG_UUID,
        IsCacheDisk,
        IsSSD,
        @{N="CapacityGB"; E={[int]($_.ExtensionData.Capacity | % {$_.BlockSize * $_.Block / 1GB})}},
        @{N="CanonicalName"; E={$_.ExtensionData.CanonicalName}} |
        sort ESXi,DG_UUID,IsCacheDisk
    report_table "vSAN Disk Info" $vsan_disk_info

    # Capacity
    $vsan_datastore = $vsan_cluster | Get-Datastore | where {$_.Type -eq "vsan"}
    $vsan_datastore_info = $vsan_datastore | select `
        Name,
        Type,
        @{N="CapacityGB";E={[int]$_.CapacityGB}},
        @{N="FreeGB";E={[int]$_.FreeSpaceGB}},
        @{N="ProvisionedGB";E={
                [int](($_.CapacityGB - $_.FreeSpaceGB) + ($_.ExtensionData.Summary.Uncommitted / 1GB))
            }
        }
    report_table "vSAN Datastore Capacity" $vsan_datastore_info

    # Storage Provider
    $vasa_providers = $vsan_cluster | Get-VMHost | % {
        $hv = $_
        Get-VasaProvider | where {($_.Namespace -eq "VSAN") -and ($_.Name -match $hv.Name)}
    }
    $vasa_providers_info = $vasa_providers | sort Name | select `
        Status,
        Name,
        ProviderId
    report_table "VASA Provider Info" $vasa_providers_info

    # Active Storage Provider
    $active_vasa_provider = Get-VasaStorageArray |
        where {$_.ModelId -eq "VSAN"} |
        where {$_.Id -eq ($vsan_datastore.ExtensionData.Info.Url -replace "ds:///vmfs/volumes/|/$","")}
    $active_vasa_provider_info = $active_vasa_provider | select `
        @{N="vsanDatastore"; E={$vsan_datastore.Name}},
        Provider,
        Id
    report_table "Active VASA Provider Info" $active_vasa_provider_info
}