azure-search-reindex

<#
.SYNOPSIS
-    _         ___                  _      ___     _         _                 
-   /_\   ___ / __| ___ __ _ _ _ __| |_   | _ \___(_)_ _  __| |_____ _____ _ _ 
-  / _ \ |_ / \__ \/ -_) _` | '_/ _| ' \  |   / -_) | ' \/ _` / -_) \ / -_) '_|
- /_/ \_\/__| |___/\___\__,_|_| \__|_||_| |_|_\___|_|_||_\__,_\___/_\_\___|_|  
.DESCRIPTION
    Given an Azure search resource, this script will discover and reindex all
    search indexes.  This is necessary as non-soft-deletes do not remove data
    from the indexes.
#>

param (
    $ApiUri,
    $ApiKey,
    $ApiVersion = "2020-06-30"
)

$Headers = @{ "api-key" = $ApiKey }

#region Common

$StarLine = "*" * 80

function GetIndexNames {
    $GetUri = "$ApiUri/indexes?api-version=$ApiVersion" + '&$select=name'
    
    $Response = Invoke-WebRequest $GetUri `
        -Method GET `
        -ContentType "application/json" `
        -Headers $Headers
    
    $Json = $Response.content | ConvertFrom-Json
    
    return $Json.value | foreach-object { ($_.name) }
}

function GetIndexerNames {
    $GetUri = "$ApiUri/indexers?api-version=$ApiVersion" + '&$select=name'
    
    $Response = Invoke-WebRequest $GetUri `
        -Method GET `
        -ContentType "application/json" `
        -Headers $Headers
    
    $Json = $Response.content | ConvertFrom-Json
    
    return $Json.value | foreach-object { ($_.name) }
}

function RecreateSearchIndex {
    param ($IndexName)

    Write-Output $StarLine
    Write-Output "        RecreateSearchIndex: $IndexName"
    Write-Output $StarLine

    #region Get Index

    $GetUri = $ApiUri + "/indexes/" + $IndexName + "?api-version=" + $ApiVersion

    $Response = Invoke-WebRequest $GetUri `
        -Method GET `
        -ContentType "application/json" `
        -Headers $Headers
    
    Write-Output $Response

    $StatusCode = $Response.StatusCode
    $IndexJson = $Response.Content

    if ($StatusCode -ne 200) {
        return
    }

    #endregion

    #region Delete Index

    $delete_uri = $ApiUri + "/indexes/" + $IndexName + "?api-version=" + $ApiVersion

    $Response = Invoke-WebRequest $delete_uri `
        -Method DELETE `
        -ContentType "application/json" `
        -Headers $Headers

    Write-Output $Response

    #endregion

    #region Create Index
    $create_url = "$ApiUri/indexes?api-version=" + $ApiVersion

    $Response = Invoke-WebRequest $create_url `
        -Method POST `
        -ContentType "application/json" `
        -Headers $Headers `
        -Body $IndexJson

    Write-Output $Response

    #endregion
}

function ResetAndRunIndexer {
    param ($IndexerName)

    Write-Output $StarLine
    Write-Output "        ResetAndRunIndexer: $IndexerName"
    Write-Output $StarLine

    $ResetUri = "$ApiUri/indexers/" + $IndexerName + "/reset?api-version=" + $ApiVersion
    $RunUri = "$ApiUri/indexers/" + $IndexerName + "/run?api-version=" + $ApiVersion

    $Response = Invoke-WebRequest $ResetUri `
        -Method POST `
        -ContentType "application/json" `
        -Headers $Headers
    Write-Output $Response

    $Response = Invoke-WebRequest $RunUri `
        -Method POST `
        -ContentType "application/json" `
        -Headers $Headers
    Write-Output $Response
}

#endregion 

foreach ($IndexName in GetIndexNames) {
    RecreateSearchIndex $IndexName
}

foreach ($IndexerName in GetIndexerNames) {
    ResetAndRunIndexer $IndexerName
}