Can I dynamically create psake tasks? - powershell

Is it possible to dynamically create psake tasks based on configuration (much as rake does)? For example, given a hashtable of environments:
environments {
$dev = 'server1',
$uat= 'server2'
}
I'd like tasks deploy.db.dev, deploy.db.uat, deploy.app.dev, deploy.app.uat etc. where the appropriate server name is provided to the task template?
Thanks

Related

Trigger multiple azure devops Pipelines in Parallel to create VM's on Azure using same Terraform module

I have terraform Module for example to create a VM on Azure and it works when I trigger the Pipeline.
But When I trigger the Pipeline twice it fails to create two VM's. How do I manipulate terraform State file ? Only way I can think of is two run multiple pipeline in different agents, does that work ?
What we have done is create terraform "common" modules (basically a subdirectory with tf files), which we source into a terraform environment multiple times with different parameters.
These we usually put into a list with a loop.
In your environments terraform:
locals {
azure_vms = [
{ name = "vm1", size = "Standard_B2s" },
{ name = "vm2", size = "Standard_B4s" }
]
}
module "my_azure_vm" {
source = "./common/my_azure_vm"
for_each = { for vm in local.azure_vms : vm.name => vm }
size = each.value.size
name = each.value.name
}
In common my_azure_vm, you can define inputs for size and name, then use those to create the VM's with your standard parameters.

How to refer previous task and stop the build in azure devops if there is no new data to publish an artifact

Getsolution.exe will give New data available or no new data available, if new data available then next jobs should be executed else nothing should be executed. How should i do it? (i am working on classic editor)
example: i have set of tasks, consider 4 tasks:
task-1: builds the solution
task-2: runs the Getstatus.exe which get the status of data available or no data available
task-3: i should be able to use the above task and make a condition/use some api query and to proceed to publish an artifact if data is available if not cleanly break out of the task and stop the build. it Shouldn't proceed to publish artifact or move to the next available task
task-4:publish artifact
First what you need is to set a variable in your task where you run Getstatus.exe:
and then set condition in next tasks:
If you set doThing to different valu than Yes you will get this:
How to refer previous task and stop the build in azure devops if there is no new data to publish an artifact
Since we need to execute different task based on the different results of Getstatus.exe running, we need set the condition based on the result of Getstatus.exe running.
To resolve this, just like the Krzysztof Madej said, we could set variable(s) based on the return value of Getstatus.exe in the inline powershell task:
$dataAvailable= $(The value of the `Getstatus.exe`)
if ($dataAvailable -eq "True")
{
Write-Host ("##vso[task.setvariable variable=Status]Yes")
}
elseif ($dataAvailable -eq "False")
{
Write-Host ("##vso[task.setvariable variable=Status]No")
}
Then set the different condition for next task:
You could check the document Specify conditions for some more details.

Terraform - Pass in Variable to "Source" Parameter

I'm using Terraform in a modular fashion in order to build out my infrastructure. I do this by having a configuration file that calls in the different modules. I want to pass an infrastructure variable which picks up what tagged version of the Github repository the application should be building out. Most importantly I'm trying to figure out how to make a concatenation of a string happen in the "source" variable of the configuration file.
module "athenaelb" {
source = "${concat("git::https://github.com/ORG/REPONAME.git?ref=",var.infra_version)}"
aws_access_key = "${var.aws_access_key}"
aws_secret_key = "${var.aws_secret_key}"
aws_region = "${var.aws_region}"
availability_zones = "${var.availability_zones}"
subnet_id = "${var.subnet_id}"
security_group = "${var.athenaelb_security_group}"
branch_name = "${var.branch_name}"
env = "${var.env}"
sns_topic = "${var.sns_topic}"
s3_bucket = "${var.elb_s3_bucket}"
athena_elb_sns_topic = "${var.athena_elb_sns_topic}"
infra_version = "${var.infra_version}"
}
I want it to compile and for the source to look like this (for example): git::https://github.com/ORG/REPONAME.git?ref=v1
Anyone have any thoughts on how to make this work?
Thanks,
Keren
This is not possible currently in Terraform itself.
The only way to achieve something like this is to use a separate script to interact with the git repository that Terraform clones into a subdirectory of the .terraform/modules directory and switch it to a different tag depending on which version you need. This is non-ideal since Terraform organizes these into directories based on a hash of the module path, but if you can identify the module in question it is safe to run git checkout within these repositories as long as you do not run terraform get again afterwards.
For more details and discussion on this issue, see issue #1439 in Terraform's issue tracker, where this feature was requested.
You could use envsubst or python jinja and use these wrapper scripts in your pipeline deploy script to actually build the scripts from .envsubst and .jinja files before your terraform plan/apply
https://github.com/uvoo/process-templates/tree/main/scripts
I wish terraform would support this but my guess is they never will so just add some simple functions/files into deploy scripts which is usually the best way to deploy.

OctopusDeploy - Every website in the deploy has a different AppPool and Website name; how to deal; no other differences

I'm trying to setup a deploy process that targets 16 web sites each hosting an instance of the same application.
Websites and AppPools are named as such:
appServer1:
app10.site.com
app11.site.com
app12.site.com
app13.site.com
appServer2:
app20.site.com
app21.site.com
app22.site.com
app23.site.com
etc.
etc.
...with each website having a correspondingly named AppPool.
I am desperately trying to determine how to use a single Deploy NuGet Package step to target all of these websites/app pools using variables and a combination of powershell scripts if possible.
I'd like to have a single step where I can variable substitute the website and app pool names. As this is the only difference. I basically need the equivalent of being able to loop the nuget package step passing it a list of website and app pool names. I cannot simply use variables because I can only resolve to the machine level with variable scoping.
Create list of all Website and AppPool names, iterate them passing each value to a Step for execution. ForEach processing step for lack of better words.
I do have the ability to rename the AppPools if need be for a more consistent pattern, but I cannot change the website names
Any ideas would be greatly appreciated.
http://help.octopusdeploy.com/discussions/questions/3481-every-website-in-the-deploy-has-a-different-apppool-and-website-name-how-to-deal-no-other-differences
There's a lot to your question, but I'm going to take a stab at explaining our approach, in hopes of jogging your creative juices.
tl;dr
simply put, use your own powershell scripts to install the web-application. In there you can set the app pool name on a per website basis
For starters, we do do a separate deployment step for each project. The scripts we use will allow you to do all deployments from a single deploy.ps1 (including unique appPool names), but we find that it really helps keep each deployment nice and lean, and easy to manage. Each project get's it's own nupkg and therein contains the predeploy.ps1, deploy.ps1, and postdeploy.ps1 as well as a folder of build/deploy scripts that we've open sourcesd, and a folder of environment config xml files.
A sample of an environment config would be this. The name is simply [envName].xml
<!-- environments\Production.xml -->
<environmentSettings>
<webSites>
<app>
<physicalPathRoot>c:\inetpub</physicalPathRoot>
<physicalFolderPrefix>appname</physicalFolderPrefix>
<siteProtcol>https</siteProtcol>
<siteName>appname.tld</siteName>
<siteHost>appname.tld</siteHost>
<portNumber>443</portNumber>
<appPath>/</appPath>
<appPool>
<name>appname.tld</name>
<!-- valid identityTypes are: [LocalSystem, LocalService, NetworkService, SpecificUser, ApplicationPoolIdentity] -->
<identityType>NetworkService</identityType>
<!-- Set this value to the User the Service will run under in the format DOMAIN\username -->
<!-- If Running as 'NetworkService' then 'NT AUTHORITY\Network Service' is used -->
<userName>NT AUTHORITY\Network Service</userName>
<!-- Leave blank unless using SpecificUser -->
<password></password>
<maxWorkerProcesses>5</maxWorkerProcesses>
</appPool>
</app>
</webSites>
<serverDatabase>
<name>database_name</name>
<connectionString>REPLACED BY OCTOPUS</connectionString>
<providerName>System.Data.SqlClient</providerName>
</serverDatabase>
</environmentSettings>
You can see in the corresponding Get-EnvironmentSettings.ps1 where we load up the config, and then update it with any Octopus variables. This is the trickiest part, because we use dot-Notation to update the paths (case sensitive).
Our octopus variables really only contain information that is secret, as everything else lives in [environment].xml
| Name | Value | Scope
--------------------------------------------------------------------------
| webSites.app.appPool.password | supersecret | Production
So now a typical deployment script simply imports the modules, grab environmentSettings, update config, and install the web app.
# Top of the script, get Octopus environment and version
param(
[string] $version = $OctopusPackageVersion,
[string] $environment = $OctopusEnvironmentName
)
# Make sure a failed deployment actually fails
$ErrorActionPreference = "Stop"
# Import the modules
$currentDir = Split-Path $script:MyInvocation.MyCommand.Path
$moduleDir = "$currentDir\modules"
Import-Module BuildDeployModules
# Grab the environment settings
$environmentSettings = Get-EnvironmentSettings $environment "//environmentSettings"
$databaseSettings = $environmentSettings.serverDatabase
$websiteSettings = $environmentSettings.webSites.app
# update the config
Update-XmlConfigValues $currentDir\website\Web.config "//appSettings/add[#key='databaseName']" $($databaseSettings.name) "value"
Update-XmlConfigValues $currentDir\website\Web.config "//connectionStrings/add[#name='databaseConnection']" $($databaseSettings.connectionString) "connectionString"
Update-XmlConfigValues $currentDir\website\Web.config "//connectionStrings/add[#name='databaseConnection']" $($databaseSettings.providerName) "providerName"
# Install the web application
Install-WebApplication $environment $websiteSettings $version "anonymousAuthentication"
In doing all of this, the web application is installed into IIS with a specific application pool, and appropriate config transforms without relying on any unknowns.
Our nupkg structure looks something like this
appname.1.2.3.4.nupkg
environments
dev.xml
staging.xml
qual.xml
production.xml
modules
[all of our build modules]
website
[all of our website files]
This is super repeatable, easy to maintain, and easy to edit config. Hope it helps

How do you data drive task dependencies via properties in psake?

In MSBuild you can data drive target dependencies by passing a item group into a target, like so:
<ItemGroup>
<FullBuildDependsOn Include="Package;CoreFinalize"
Condition="#(FullBuildDependsOn) == ''" />
</ItemGroup>
<Target Name="FullBuild"
DependsOnTargets="#(FullBuildDependsOn)" />
If you don't override the FullBuildDependsOn item group, the FullBuild target defaults to depending on the Package and CoreFinalize targets. However, you can override this by defining your own FullBuildDependsOn item group.
I'd like to do the same in psake - for example:
properties {
$FullBuildDependsOn = "Package", "CoreFinalize"
}
task default -depends FullBuild
# this won't work because $FullBuildDependsOn hasn't been defined yet - the "Task" function will see this as a null depends array
task FullBuild -depends $FullBuildDependsOn
What do I need to do to data drive the task dependencies in psake?
OK. I understand what you're trying to accomplish now. You can do this through regular PowerShell-fu.
$FullBuildDependsOn = "Package"
Invoke-psake buildScript.ps1
In buildScript.ps1:
if($FullBuildDependsOn -eq $Null) {
$FullBuildDependsOn = "Package", "CoreFinalize"
}
properties {
# Usual build properties here
}
task default -depends FullBuild
task FullBuild -depends $FullBuildDependsOn {}
task Package {}
task CoreFinalize {}
The key here is to use a normal PowerShell variable rather than using a psake property. HTH.
That's not a use-case that we ever considered when implementing psake. Changing FullBuild's list of dependencies seems a bit odd and unmaintainable to me. You can accomplish the same thing by passing in a list of tasks to run from the command line.
./invoke-psake buildScript.ps1 Package, CoreFinalize
Or am I missing something?