Private/General.ps1
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Function Test-Initialized { <# .SYNOPSIS Checks if Set-DatabricksEnvironment was executed before any other command of the module. .DESCRIPTION Checks if Set-DatabricksEnvironment was executed before any other command of the module. .EXAMPLE Test-Initialized #> [CmdletBinding()] param () Write-Verbose "Checking if Databricks environment has been initialized yet ..." if($script:dbInitialized -eq $false) { Write-Error "Databricks environment has not been initialized yet! Please run Set-DatabricksEnvironment before any other cmdlet!" } Write-Verbose "Databricks environment already initialized!" } Function Clear-ScriptVariables { $script:dbAccessToken = $null $script:dbApiRootUrl = $null $script:dbApiFullUrl = $null $script:dbCloudProvider = $null $script:dbInitialized = $false $script:dbAuthenticationProvider = $null $script:dbAuthenticationHeader = $null $script:dbUseCachedDynamicParamValues = $null $script:dbCachedDynamicParamTimeout = $null $script:dbCachedDynamicParamValues = @{} } function Join-Parts { <# .SYNOPSIS Join strings with a specified separator. .DESCRIPTION Join strings with a specified separator. This strips out null values and any duplicate separator characters. See examples for clarification. .PARAMETER Separator Separator to join with .PARAMETER Parts Strings to join .EXAMPLE Join-Parts -Separator "/" this //should $Null /work/ /well # Output: this/should/work/well .EXAMPLE Join-Parts -Parts http://this.com, should, /work/, /wel # Output: http://this.com/should/work/wel .EXAMPLE Join-Parts -Separator "?" this ?should work ???well # Output: this?should?work?well .EXAMPLE $CouldBeOneOrMore = @( "JustOne" ) Join-Parts -Separator ? -Parts CouldBeOneOrMore # Output JustOne # If you have an arbitrary count of parts coming in, # Unnecessary separators will not be added .NOTES Credit to Rob C. and Michael S. from this post: http://stackoverflow.com/questions/9593535/best-way-to-join-parts-with-a-separator-in-powershell #> [CmdletBinding()] param ( [Parameter(Mandatory = $true, Position = 1)] [string] $Separator, [Parameter(Mandatory = $false, Position = 2, ValueFromRemainingArguments=$true)] [string[]]$Parts = $null ) return ( $Parts | Where-Object { $_ } | Foreach-Object { ( [string]$_ ).trim($Separator) } | Where-Object { $_ } ) -join $Separator } Function Get-RequestHeader { <# .SYNOPSIS Returns the HTTP header for the Databricks API including authentication etc. .DESCRIPTION Returns the HTTP header for the Databricks API including authentication etc. .EXAMPLE Get-RequestHeader #> [CmdletBinding()] param () Write-Verbose "Getting Headers for Databricks API call ..." $headers = $script:dbAuthenticationHeader $headers["Content-Type"] = "application/json" return $headers <# switch($script:dbAuthenticationProvider) { "DatabricksApi" { return @{ "Authorization" = "Bearer $script:dbAccessToken" "Content-Type" = "application/json" } } } #> } Function Get-ApiUrl { <# .SYNOPSIS Returns the HTTP header for the Databricks API including authentication etc. .DESCRIPTION Returns the HTTP header for the Databricks API including authentication etc. .EXAMPLE Get-ApiUrl -ApiEndPoint "/2.0/secrets/scopes/list" #> [CmdletBinding()] param ( [Parameter(Mandatory = $true, Position = 1)] [string] $ApiEndpoint ) Write-Verbose "Getting Headers for Databricks API call ..." $result = Join-Parts -Separator "/" -Parts $script:dbApiRootUrl, $ApiEndpoint return $result } Function Add-Property { <# .SYNOPSIS Returns the HTTP header for the Databricks API including authentication etc. .DESCRIPTION Returns the HTTP header for the Databricks API including authentication etc. .EXAMPLE Get-DbRequestHeader #> [CmdletBinding()] param ( [Parameter(Mandatory = $true, Position = 1, ValueFromPipeline = $true)] [hashtable] $Hashtable, [Parameter(Mandatory = $true, Position = 2)] [string] $Name, [Parameter(Mandatory = $true, Position = 3)] [object][AllowNull()] $Value, [Parameter(Mandatory = $false, Position = 4)] [bool] $AllowEmptyValue = $false, [Parameter(Mandatory = $false, Position = 5)] [object] $NullValue = $null, [Parameter(Mandatory = $false, Position = 6)] [switch] $Force ) if($Value -eq $null -or $Value -eq $NullValue) { Write-Verbose "Found a null-Value to add as $Name ..." if($AllowEmptyValue) { Write-Verbose "Adding null-value ..." $Hashtable | Add-PropertyIfNotExists -Name $Name -Value $Value -Force:$Force } else { Write-Verbose "null-value is omitted." # do nothing as we do not add Empty values } } elseif($Value.GetType().Name -eq 'Object[]') # array { Write-Verbose "Found an Array-Property to add as $Name ..." if($Value.Count -gt 0 -or $AllowEmptyValue) { $Hashtable | Add-PropertyIfNotExists -Name $Name -Value $Value -Force:$Force } } elseif($Value.GetType().Name -eq 'Hashtable') # hashtable { Write-Verbose "Found a Hashtable-Property to add as $Name ..." if($Value.Count -gt 0 -or $AllowEmptyValue) { $Hashtable | Add-PropertyIfNotExists -Name $Name -Value $Value -Force:$Force } } elseif($Value.GetType().Name -eq 'String') # String { Write-Verbose "Found a String-Property to add as $Name ..." if(-not [string]::IsNullOrEmpty($Value) -or $AllowEmptyValue) { $Hashtable | Add-PropertyIfNotExists -Name $Name -Value $Value -Force:$Force } } elseif($Value.GetType().Name -eq 'Boolean') # Boolean { Write-Verbose "Found a Boolean-Property to add as $Name ..." $Hashtable | Add-PropertyIfNotExists -Name $Name -Value $Value.ToString().ToLower() -Force:$Force } else { Write-Verbose "Found a $($Value.GetType().Name)-Property to add as $Name ..." $Hashtable | Add-PropertyIfNotExists -Name $Name -Value $Value -Force:$Force } } Function Add-PropertyIfNotExists { [CmdletBinding()] param ( [Parameter(Mandatory = $true, Position = 1, ValueFromPipeline = $true)] [hashtable] $Hashtable, [Parameter(Mandatory = $true, Position = 2)] [string] $Name, [Parameter(Mandatory = $true, Position = 3)][AllowNull()] [object] $Value, [Parameter(Mandatory = $false, Position = 4)] [switch] $Force ) # if the property does not exist or -Force is specified, we set/overwrite the value if(($Hashtable.Keys -notcontains $Name) -or $Force) { $Hashtable[$Name] = $Value } else { throw "Property $Name already exists! Use -Force parameter to overwrite it!" } } # Original Code from https://www.powershellgallery.com/packages/Carbon/2.1.0/Content/Functions%5CConvertTo-Base64.ps1 # Copied into here to avoid unnecessary dependencies function ConvertTo-Base64 { <# .SYNOPSIS Converts a value to base-64 encoding. .DESCRIPTION For some reason. .NET makes encoding a string a two-step process. This function makes it a one-step process. You're actually allowed to pass in `$null` and an empty string. If you do, you'll get `$null` and an empty string back. .PARAMETER Value The value to encode as Base64 string. Also allows pipelined input! .PARAMETER Encoding The encoding to use to convert the Base64 bytes to a string. Default is [Text.Encoding]::UTF8 .LINK ConvertFrom-Base64 .EXAMPLE ConvertTo-Base64 -Value 'Encode me, please!' Encodes `Encode me, please!` into a base-64 string. .EXAMPLE ConvertTo-Base64 -Value 'Encode me, please!' -Encoding ([Text.Encoding]::ASCII) Shows how to specify a custom encoding in case your string isn't in Unicode text encoding. .EXAMPLE 'Encode me!' | ConvertTo-Base64 Converts `Encode me!` into a base-64 string. #> [CmdletBinding()] param( [Parameter(Mandatory=$true,ValueFromPipeline=$true)] [AllowNull()] [AllowEmptyString()] [string[]] # The value to base-64 encoding. $Value, [Text.Encoding] $Encoding = ([Text.Encoding]::UTF8) ) begin { #Set-StrictMode -Version 'Latest' #Use-CallerPreference -Cmdlet $PSCmdlet -Session $ExecutionContext.SessionState } process { $Value | ForEach-Object { if( $_ -eq $null ) { return $null } $bytes = $Encoding.GetBytes($_) [Convert]::ToBase64String($bytes) } } } # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # Original Code from https://www.powershellgallery.com/packages/Carbon/2.1.0/Content/Functions%5CConvertFrom-Base64.ps1 # Copied into here to avoid unnecessary dependencies function ConvertFrom-Base64 { <# .SYNOPSIS Converts a base-64 encoded string back into its original string. .DESCRIPTION For some reason. .NET makes encoding a string a two-step process. This function makes it a one-step process. You're actually allowed to pass in `$null` and an empty string. If you do, you'll get `$null` and an empty string back. .PARAMETER Value The Base64 value to decode to a string. Also allows pipelined input! .PARAMETER Encoding The encoding to use to convert the Base64 bytes to a string. Default is [Text.Encoding]::UTF8 .LINK ConvertTo-Base64 .EXAMPLE ConvertFrom-Base64 -Value 'RW5jb2RlIG1lLCBwbGVhc2Uh' Decodes `RW5jb2RlIG1lLCBwbGVhc2Uh` back into its original string. .EXAMPLE ConvertFrom-Base64 -Value 'RW5jb2RlIG1lLCBwbGVhc2Uh' -Encoding ([Text.Encoding]::ASCII) Shows how to specify a custom encoding in case your string isn't in Unicode text encoding. .EXAMPLE 'RW5jb2RlIG1lIQ==' | ConvertTo-Base64 Shows how you can pipeline input into `ConvertFrom-Base64`. #> [CmdletBinding()] param( [Parameter(Mandatory = $true,ValueFromPipeline = $true)] [AllowNull()] [AllowEmptyString()] [string[]] # The base-64 string to convert. $Value, [Text.Encoding] # The encoding to use. Default is Unicode. $Encoding = ([Text.Encoding]::UTF8) ) begin { #Set-StrictMode -Version 'Latest' #Use-CallerPreference -Cmdlet $PSCmdlet -Session $ExecutionContext.SessionState } process { $Value | ForEach-Object { if( $_ -eq $null ) { return $null } $bytes = [Convert]::FromBase64String($_) $Encoding.GetString($bytes) } } } function ConvertTo-Hashtable { <# .SYNOPSIS Converts a PowerShell object to a generic hashtable .DESCRIPTION Converts a PowerShell object to a generic hashtable .PARAMETER InputObject The object to convert to a hashtable #> [CmdletBinding()] param ( [Parameter(ValueFromPipeline = $true)] $InputObject ) process { if ($InputObject -is [Hashtable]) { return $InputObject } if ($null -eq $InputObject) { return $null } if (($InputObject -is [System.Collections.IEnumerable]) -and $InputObject -isnot [string]) { $collection = @() foreach ($object in $InputObject) { $collection += ConvertTo-Hashtable $object } return $collection } elseif ($InputObject -is [PSCustomObject]) { $hash = @{} foreach ($property in $InputObject.PSObject.Properties) { $hash[$property.Name] = ConvertTo-Hashtable $property.Value } return $hash } else { return $InputObject } } } function ConvertTo-PSObject { [CmdletBinding()] param ( [Parameter(ValueFromPipeline = $true)] [hashtable] $InputObject, [Parameter()] [bool] $Recursive = $true ) process { $output = New-Object PSCustomObject foreach ($k in $InputObject.Keys) { if ($InputObject[$k] -is [hashtable] -and $Recursive) { $value = ConvertTo-PSObject -InputObject $InputObject[$k] -Recursive $Recursive } else { $value = $InputObject[$k] } Add-Member -InputObject $output -MemberType NoteProperty -Name $k -Value $value } return [PSCustomObject]$output } } # TRY/CATCH with proper Error message on APIs #try { Invoke-RestMethod -Uri $Uri -Headers $Headers } #catch { ([System.IO.StreamReader]$_.Exception.Response.GetResponseStream()).ReadToEnd() } Function New-DynamicParam { <# .SYNOPSIS Helper function to simplify creating dynamic parameters .DESCRIPTION Helper function to simplify creating dynamic parameters Example use cases: Include parameters only if your environment dictates it Include parameters depending on the value of a user-specified parameter Provide tab completion and intellisense for parameters, depending on the environment Please keep in mind that all dynamic parameters you create will not have corresponding variables created. One of the examples illustrates a generic method for populating appropriate variables from dynamic parameters Alternatively, manually reference $PSBoundParameters for the dynamic parameter value .NOTES Originally found at https://github.com/RamblingCookieMonster/PowerShell/blob/master/New-DynamicParam.ps1 Credit to http://jrich523.wordpress.com/2013/05/30/powershell-simple-way-to-add-dynamic-parameters-to-advanced-function/ Added logic to make option set optional Added logic to add RuntimeDefinedParameter to existing DPDictionary Added a little comment based help Credit to BM for alias and type parameters and their handling .PARAMETER Name Name of the dynamic parameter .PARAMETER Type Type for the dynamic parameter. Default is string .PARAMETER Alias If specified, one or more aliases to assign to the dynamic parameter .PARAMETER ValidateSet If specified, set the ValidateSet attribute of this dynamic parameter .PARAMETER ValidateScript If specified, set the ValidateScript attribute of this dynamic parameter .PARAMETER Mandatory If specified, set the Mandatory attribute for this dynamic parameter .PARAMETER ParameterSetName If specified, set the ParameterSet attribute for this dynamic parameter .PARAMETER Position If specified, set the Position attribute for this dynamic parameter .PARAMETER ValueFromPipelineByPropertyName If specified, set the ValueFromPipelineByPropertyName attribute for this dynamic parameter .PARAMETER ValueFromPipeline If specified, set the ValueFromPipeline attribute for this dynamic parameter .PARAMETER HelpMessage If specified, set the HelpMessage for this dynamic parameter .PARAMETER DPDictionary If specified, add resulting RuntimeDefinedParameter to an existing RuntimeDefinedParameterDictionary (appropriate for multiple dynamic parameters) If not specified, create and return a RuntimeDefinedParameterDictionary (appropriate for a single dynamic parameter) See final example for illustration .EXAMPLE function Show-Free { [CmdletBinding()] Param() DynamicParam { $options = @( gwmi win32_volume | %{$_.driveletter} | sort ) New-DynamicParam -Name Drive -ValidateSet $options -Position 0 -Mandatory } begin{ #have to manually populate $drive = $PSBoundParameters.drive } process{ $vol = gwmi win32_volume -Filter "driveletter='$drive'" "{0:N2}% free on {1}" -f ($vol.Capacity / $vol.FreeSpace),$drive } } #Show-Free Show-Free -Drive <tab> # This example illustrates the use of New-DynamicParam to create a single dynamic parameter # The Drive parameter ValidateSet populates with all available volumes on the computer for handy tab completion / intellisense .EXAMPLE # I found many cases where I needed to add more than one dynamic parameter # The DPDictionary parameter lets you specify an existing dictionary # The block of code in the Begin block loops through bound parameters and defines variables if they don't exist Function Test-DynPar{ [cmdletbinding()] param( [string[]]$x = $Null ) DynamicParam { #Create the RuntimeDefinedParameterDictionary $Dictionary = New-Object System.Management.Automation.RuntimeDefinedParameterDictionary New-DynamicParam -Name AlwaysParam -ValidateSet @( gwmi win32_volume | %{$_.driveletter} | sort ) -DPDictionary $Dictionary #Add dynamic parameters to $dictionary if($x -eq 1) { New-DynamicParam -Name X1Param1 -ValidateSet 1,2 -mandatory -DPDictionary $Dictionary New-DynamicParam -Name X1Param2 -DPDictionary $Dictionary New-DynamicParam -Name X3Param3 -DPDictionary $Dictionary -Type DateTime } else { New-DynamicParam -Name OtherParam1 -Mandatory -DPDictionary $Dictionary New-DynamicParam -Name OtherParam2 -DPDictionary $Dictionary New-DynamicParam -Name OtherParam3 -DPDictionary $Dictionary -Type DateTime } #return RuntimeDefinedParameterDictionary $Dictionary } Begin { #This standard block of code loops through bound parameters... #If no corresponding variable exists, one is created #Get common parameters, pick out bound parameters not in that set Function _temp { [cmdletbinding()] param() } $BoundKeys = $PSBoundParameters.keys | Where-Object { (get-command _temp | select -ExpandProperty parameters).Keys -notcontains $_} foreach($param in $BoundKeys) { if (-not ( Get-Variable -name $param -scope 0 -ErrorAction SilentlyContinue ) ) { New-Variable -Name $Param -Value $PSBoundParameters.$param Write-Verbose "Adding variable for dynamic parameter '$param' with value '$($PSBoundParameters.$param)'" } } #Appropriate variables should now be defined and accessible Get-Variable -scope 0 } } # This example illustrates the creation of many dynamic parameters using New-DynamicParam # You must create a RuntimeDefinedParameterDictionary object ($dictionary here) # To each New-DynamicParam call, add the -DPDictionary parameter pointing to this RuntimeDefinedParameterDictionary # At the end of the DynamicParam block, return the RuntimeDefinedParameterDictionary # Initialize all bound parameters using the provided block or similar code .FUNCTIONALITY PowerShell Language #> param( [string] $Name, [System.Type] $Type = [string], [string[]] $Alias = @(), [string[]] $ValidateSet, [scriptblock]$validateScript, [switch] $Mandatory, [string] $ParameterSetName="__AllParameterSets", [int] $Position, [switch] $ValueFromPipelineByPropertyName, [switch]$ValueFromPipeline, [string] $HelpMessage, [validatescript({ if(-not ( $_ -is [System.Management.Automation.RuntimeDefinedParameterDictionary] -or -not $_) ) { Throw "DPDictionary must be a System.Management.Automation.RuntimeDefinedParameterDictionary object, or not exist" } $True })] $DPDictionary = $false ) #Create attribute object, add attributes, add to collection $ParamAttr = New-Object System.Management.Automation.ParameterAttribute $ParamAttr.ParameterSetName = $ParameterSetName if($mandatory) { $ParamAttr.Mandatory = $True } if($Position -ne $null) { $ParamAttr.Position=$Position } if($ValueFromPipelineByPropertyName) { $ParamAttr.ValueFromPipelineByPropertyName = $True } if ($ValueFromPipeline) { $ParamAttr.ValueFromPipeline = $True } if($HelpMessage) { $ParamAttr.HelpMessage = $HelpMessage } $AttributeCollection = New-Object 'Collections.ObjectModel.Collection[System.Attribute]' $AttributeCollection.Add($ParamAttr) #param validation set if specified if($ValidateSet) { $ParamOptions = New-Object System.Management.Automation.ValidateSetAttribute -ArgumentList $ValidateSet $AttributeCollection.Add($ParamOptions) } if ($validateScript) { $paramScript = New-Object -TypeName System.Management.Automation.ValidateScriptAttribute -ArgumentList $validateScript $AttributeCollection.Add($paramScript) } #Aliases if specified if($Alias.count -gt 0) { $ParamAlias = New-Object System.Management.Automation.AliasAttribute -ArgumentList $Alias $AttributeCollection.Add($ParamAlias) } #Create the dynamic parameter $Parameter = New-Object -TypeName System.Management.Automation.RuntimeDefinedParameter -ArgumentList @($Name, $Type, $AttributeCollection) #Add the dynamic parameter to an existing dynamic parameter dictionary, or create the dictionary and add it if($DPDictionary) { $DPDictionary.Add($Name, $Parameter) } else { $Dictionary = New-Object System.Management.Automation.RuntimeDefinedParameterDictionary $Dictionary.Add($Name, $Parameter) $Dictionary } } Function Get-DynamicParamValues { Param ( [parameter(Mandatory = $true)] [scriptblock] $Command ) Process { if(-not $script:dbInitialized) { return $null } $commandText = $Command.ToString() $commandTextGeneric = (($commandText -split 'Get-')[1] -split ' ')[0].Trim() # some parameter values are dynamic but do not change $hasFixedValues = $commandTextGeneric -in ('DatabricksNodeType', 'DatabricksSparkVersion') if($script:dbDynamicParameterCacheTimeout -gt 0 -or $hasFixedValues) { Write-Verbose "Trying to using cached Dynamic Parameter Values" if($script:dbCachedDynamicParamValues[$commandTextGeneric]) { Write-Verbose "Cached Dynamic Parameter Values found for '$commandTextGeneric'!" $cache = $script:dbCachedDynamicParamValues[$commandTextGeneric] $seconds = (New-TimeSpan -Start $cache.lastRefresh -End (Get-Date)).Seconds if($seconds -lt $script:dbDynamicParameterCacheTimeout -or $hasFixedValues) { Write-Verbose "Returning Cached Dynamic Parameter Values!" return $cache.cachedValues } } } Write-Verbose "Caching not enabled, Cached Value not found or timed out! Evaluating command, caching and returning results ..." $values = Invoke-Command -ScriptBlock $Command $cache = @{ "cachedValues" = $values "lastRefresh" = Get-Date } $script:dbCachedDynamicParamValues[$CommandTextGeneric] = $cache return $values } } |