Private/deploy/Configuration/Resolve-ServerRoles.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-ServerRoles { <# .SYNOPSIS Resolves a hashtable containing ServerRoles for given environment. .DESCRIPTION It reads global Environments hashtable, e.g.: $Environments = @{ Default = @{ ServerRoles = @{ Name1 = @{ Steps = @('WebServerProvision', 'WebServerDeploy') ServerConnections = $null } Name2 = ... } } Dev = @{ ServerRoles = @{ Name1 = @{ Steps = @('WebServerProvision', 'WebServerDeploy') ServerConnections = 'web1' } } } } And creates following structure (when resolved for environment 'Dev'): $ServerRoles = @{ Name1 = @{ Steps = @((DSC configuration handle with name 'WebServerProvision'), (function handle with name 'WebServerDeploy')) ServerConnections = (ServerConnection hashtable with name 'web1'') } Name2 = ... } .PARAMETER AllEnvironments Hashtable containing all environment definitions. .PARAMETER Environment Name of the environment which the ServerRoles should be resolved for. .PARAMETER ResolvedTokens Resolved tokens. .PARAMETER ServerRolesFilter Filter for server roles - can be used if you don't want to deploy all server roles defined in the configuration files. .PARAMETER StepsFilter List of Steps to deploy - can be used if you don't want to deploy all steps defined in the configuration files. If not set, steps will be deployed according to the ServerRoles defined in the configuration files. .PARAMETER NodesFilter List of Nodes where steps have to be deployed - can be used if you don't want to deploy to all nodes defined in the configuration files. If not set, steps will be deployed to all nodes according to the ServerRoles defined in the configuration files. .PARAMETER DeployType Deployment type: - **All** - deploy everything according to configuration files (= Provision + Deploy) - **Provision** - deploy only provisioning steps (-StepsProvision) - **Deploy** - deploy only deploy steps (-StepsDeploy / -Steps) - **Adhoc** - deploy steps defined in $StepsFilter to server roles defined in $ServerRolesFilter and/or nodes defined in $NodesFilter (note the steps do not need to be defined in server roles) .EXAMPLE $serverRoles = Resolve-ServerRoles -AllEnvironments $AllEnvironments -Environment $env -ServerConnections $serverConnections ` -ServerRolesFilter $ServerRolesFilter -NodesFilter $NodesFilter -StepsFilter $StepsFilter -DeployType $deployType #> [CmdletBinding()] [OutputType([hashtable])] param( [Parameter(Mandatory=$true)] [hashtable] $AllEnvironments, [Parameter(Mandatory=$true)] [string] $Environment, [Parameter(Mandatory=$true)] [hashtable] $ResolvedTokens, [Parameter(Mandatory=$false)] [string[]] $ServerRolesFilter, [Parameter(Mandatory=$false)] [string[]] $StepsFilter, [Parameter(Mandatory=$false)] [string[]] $NodesFilter, [Parameter(Mandatory=$false)] [ValidateSet('All', 'Provision', 'Deploy', 'Adhoc')] [string] $DeployType = 'All' ) if ($DeployType -eq 'Adhoc' -and !$StepsFilter) { throw "When DeployType = 'Adhoc' StepsFilter must be provided." } if ($DeployType -eq 'Adhoc' -and !$ServerRolesFilter -and !$NodesFilter) { throw "When DeployType = 'Adhoc' either ServerRolesFilter or NodesFilter must be provided." } $envHierarchy = @(Resolve-BasedOnHierarchy -AllElements $AllEnvironments -SelectedElement $Environment -ConfigElementName 'Environment') $serverRolesResolved = [ordered]@{} # traverse environments from top to bottom to set / override ServerRole properties foreach ($env in $envHierarchy) { $serverRoles = $AllEnvironments[$env].ServerRoles.Values | Where-Object { !$ServerRolesFilter -or $ServerRolesFilter -icontains $_.Name } foreach ($serverRole in $serverRoles) { if (!$serverRolesResolved.Contains($serverRole.Name)) { $serverRolesResolved[$serverRole.Name] = @{} } foreach ($entry in $serverRole.GetEnumerator()) { $serverRolesResolved[$serverRole.Name][$entry.Key] = $entry.Value } } } # get only enabled server roles $serverRoles = [ordered]@{} foreach ($serverRole in $serverRolesResolved.GetEnumerator()) { $serverRoleValue = $serverRole.Value if ($serverRoleValue.ContainsKey('Enabled')) { $serverRoleEnabled = Resolve-ScriptedToken -ScriptedToken $serverRoleValue.Enabled -ResolvedTokens $ResolvedTokens -Environment $Environment -TokenName "[ServerRole '$($serverRole.Name)' / -Enabled]" if ($serverRoleEnabled -eq $false) { Write-Log -Info "Environment '$Environment' / ServerRole '$($serverRole.Name)' is disabled and will not be deployed." continue } } $serverRoles[$serverRole.Key] = $serverRoleValue } $allServerConnections = Resolve-ServerConnectionsConfigElements -AllEnvironments $AllEnvironments -Environment $Environment -ResolvedTokens $resolvedTokens $StepsDefinitions = Resolve-StepsDefinitions -AllEnvironments $AllEnvironments -Environment $Environment -StepsFilter $StepsFilter $serverRolesToRemove = @() foreach ($serverRole in $serverRoles.Values) { $serverRole.Steps = Resolve-Steps ` -Environment $Environment ` -StepsProvision $serverRole.StepsProvision ` -StepsDeploy $serverRole.StepsDeploy ` -StepsFilter $StepsFilter ` -StepsDefinitions $StepsDefinitions ` -DeployType $DeployType ` -ServerRole $serverRole ` -ResolvedTokens $resolvedTokens if (!$serverRole.Steps) { Write-Log -Info "Environment '$Environment' / ServerRole '$($serverRole.Name)' has no steps and will not be deployed." $serverRolesToRemove += $serverRole.Name continue } $serverRole.ServerConnections = Resolve-ServerConnections ` -Environment $Environment ` -AllServerConnections $allServerConnections ` -SelectedServerConnections $serverRole.ServerConnections ` -NodesFilter $NodesFilter ` -DeployType $DeployType ` -ServerRole $serverRole ` -ResolvedTokens $resolvedTokens # remove ServerRoles without any ServerConnections if (!$serverRole.ServerConnections) { Write-Log -Info "Environment '$Environment' / ServerRole '$($serverRole.Name)' has no ServerConnections or Nodes and will not be deployed." $serverRolesToRemove += $serverRole.Name continue } } foreach ($serverRoleName in $serverRolesToRemove) { $serverRoles.Remove($serverRoleName) } return $serverRoles } |