Private/deploy/Configuration/Resolve-TokensSinglePass.ps1
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<#
The MIT License (MIT) Copyright (c) 2015 Objectivity Bespoke Software Specialists Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. #> function Resolve-TokensSinglePass { <# .SYNOPSIS Helper function to run one pass of tokens resolve. .PARAMETER ResolveStrings If true, tokens with type string will be resolved. .PARAMETER ResolveScriptBlocks If true, tokens with type scriptblock will be resolved. .PARAMETER ResolvedTokens Resolved tokens (result hashtable) .PARAMETER ResolveFunction Scriptblock that will be invoked to resolve specific token value. .PARAMETER Environment Environment name - will be used for selecting proper sub-hashtable from $AllEnvironments. .PARAMETER Node Node name - will be used for selecting proper sub-hashtable from $AllEnvironments and to resolve '${Node}' tokens. .PARAMETER ValidateExistence Whether to validate existence of the referenced token. .PARAMETER Outputs Hashtable with externally set output values, used to pass values between deployment steps. .EXAMPLE Resolve-TokensSinglePass -ResolvedTokens $resolvedTokens -Environment $Environment -Node $Node -ResolveFunction $resolveTokenFunction -ValidateExistence:$false #> [CmdletBinding()] [OutputType([void])] param( [Parameter(Mandatory=$false)] [switch] $ResolveStrings, [Parameter(Mandatory=$false)] [switch] $ResolveScriptBlocks, [Parameter(Mandatory=$true)] [hashtable] $ResolvedTokens, [Parameter(Mandatory=$true)] [string] $Environment, [Parameter(Mandatory=$false)] [string] $Node, [Parameter(Mandatory=$false)] [switch] $ValidateExistence, [Parameter(Mandatory=$false)] [hashtable] $Outputs ) foreach ($category in $resolvedTokens.Keys) { $tokensCatKeys = @() $ResolvedTokens[$category].Keys | Foreach-Object { $tokensCatKeys += $_ } foreach ($tokenKey in $tokensCatKeys) { $tokenValue = $resolvedTokens[$category][$tokenKey] if (!$tokenValue) { continue } $params = @{ ResolveStrings = $ResolveStrings ResolveScriptBlocks = $ResolveScriptBlocks TokenName = $tokenKey TokenCategory = $category TokenValue = $tokenValue ResolvedTokens = $ResolvedTokens Environment = $Environment Node = $Node ValidateExistence = $ValidateExistence Outputs = $Outputs } $resolvedTokens[$category][$tokenKey] = Resolve-SingleTokenRecursively @params } } } function Resolve-SingleTokenRecursively { <# .SYNOPSIS Helper function to resolve single token recursively (if it's a hashtable or array). .PARAMETER ResolveStrings If true, tokens with type string will be resolved. .PARAMETER ResolveScriptBlocks If true, tokens with type scriptblock will be resolved. .PARAMETER TokenName Token name. .PARAMETER TokenCategory Token category. .PARAMETER TokenValue Token value. .PARAMETER ResolvedTokens Resolved tokens (result hashtable) .PARAMETER Environment Environment name - will be used for selecting proper sub-hashtable from $AllEnvironments. .PARAMETER Node Node name - will be used for selecting proper sub-hashtable from $AllEnvironments and to resolve '${Node}' tokens. .PARAMETER ValidateExistence Whether to validate existence of the referenced token. .PARAMETER Outputs Hashtable with externally set output values, used to pass values between deployment steps. .EXAMPLE Resolve-SingleTokenRecursively @params #> [CmdletBinding()] [OutputType([object])] param( [Parameter(Mandatory=$false)] [switch] $ResolveStrings, [Parameter(Mandatory=$false)] [switch] $ResolveScriptBlocks, [Parameter(Mandatory=$true)] [object] $TokenName, [Parameter(Mandatory=$true)] [object] $TokenCategory, [Parameter(Mandatory=$false)] [object] $TokenValue, [Parameter(Mandatory=$true)] [hashtable] $ResolvedTokens, [Parameter(Mandatory=$true)] [string] $Environment, [Parameter(Mandatory=$false)] [string] $Node, [Parameter(Mandatory=$false)] [switch] $ValidateExistence, [Parameter(Mandatory=$false)] [hashtable] $Outputs ) $params = @{ ResolveStrings = $ResolveStrings ResolveScriptBlocks = $ResolveScriptBlocks TokenCategory = $TokenCategory ResolvedTokens = $ResolvedTokens Environment = $Environment Node = $Node ValidateExistence = $ValidateExistence } if ($TokenValue -is [hashtable]) { $newHashTable = @{} foreach ($tokenValueEnumerator in $tokenValue.GetEnumerator()) { $params.TokenName = "$TokenName.$($tokenValueEnumerator.Key)" $params.TokenValue = $tokenValueEnumerator.Value $newHashTable[$tokenValueEnumerator.Key] = Resolve-SingleTokenRecursively @params } return $newHashTable } elseif ($TokenValue -is [array]) { $newArray = @() $i = 0 foreach ($entry in $TokenValue) { $params.TokenName = "${TokenName}[$i]" $params.TokenValue = $entry $newArray += Resolve-SingleTokenRecursively @params $i++ } return $newArray } elseif ($ResolveStrings -and $TokenValue -is [string]) { $newValue = Resolve-Token -Name $TokenName -Value $TokenValue -Category $TokenCategory -ResolvedTokens $ResolvedTokens -ValidateExistence:$ValidateExistence return $newValue } elseif ($ResolveScriptBlocks -and $TokenValue -is [scriptblock]) { try { $newValue = Resolve-ScriptedToken -TokenName $TokenName -ScriptedToken $TokenValue -TokenCategory $TokenCategory -ResolvedTokens $ResolvedTokens -Node $Node -Environment $Environment -Outputs $Outputs } catch { throw ("Cannot evaluate token '$Environment / $TokenCategory / $TokenName'. Error message: {0} / token value: {{ {1} }}" -f $_.Exception.Message, $TokenValue) } return $newValue } return $TokenValue } |