In this hands-on lab, we will build an Azure Function app on a Windows VM and then publish it to an Azure Function app service within Azure. We will do this all using Azure Functions core tools.
Successfully complete this lab by achieving the following learning objectives:
- Log In to the Azure Portal
Log in to the Azure Portal using the username and password supplied by the lab.
- Open a browser.
- Navigate to the provided Azure Portal URL.
- Use the supplied username and password to authenticate.
- Remote into the Windows VM
Starting in the Azure dashboard, perform the following tasks:
- Open the navigation menu in the upper-left of the Portal.
- Click on All resources.
Wait for the the list of all resources appear.
In the list, click on the lab-VM resource.
Wait for the VM overview page to open. On that page, make note of the public IP address.
Using a remote desktop client, connect to the IP address of the VM. Log in using the credentials provided on the lab page.
Accept the certificate if asked to do so.
Wait patiently for the desktop to load and stabilize, then click No for network sharing and close the server manager if it opens.
- Install Azure Functions Core Tools
Open PowerShell ISE as an administrator. Open a new script window. Paste the following into the editor window, not the blue pane.
choco install nodejs-lts -y --force npm i -g azure-functions-core-tools@3 --unsafe-perm true code --install-extension ms-vscode.csharp code --install-extension ms-vscode.azurecli code --install-extension ms-azuretools.vscode-azurefunctions code --install-extension ms-vscode.azure-account code --install-extension ms-azuretools.vscode-azurestorage code --install-extension ms-vscode.powershell
Run the script by pressing F5 or the play button.
Wait for a few minutes for it to complete.
Close the PowerShell ISE window.
- Open the Source Code in Visual Studio Code
Open an administrative command prompt. Change to the directory with the code using the following command:
Now open the project in Visual Studio Code with the following command:
Wait for Visual Studio Code to open the solution.
On the toast message about detecting an Azure Functions project being found in the folder, press the Yes button.
On the toast message about There are unresolved dependencies…, click the Restore button.
- Build, Deploy, and Test the Function App
In Visual Studio Code, open the
deploy.ps1file in the project. We will execute commands in this script one-by-one. Each line of the script can be individually executed by selecting the line and pressing
First, change the directory. While this is not required, it’s good practice.
Build the solution:
Log in to Azure with the Azure CLI. This is very important.
This will pop-up Internet Explorer for logging in. On the nag screen about security, select the default option. A tab will open with a log in form, but another tab will open on top welcoming you to IE – close that one.
Back in the login form, log in using the credentials previously used to log into Azure, not the credentials to log into the VM.
The terminal window in VS Code will show some JSON indicating a successful login.
Now get the function app name by running the following PowerShell / Azure CLI:
$name = $(az functionapp list --query ".name" -o tsv) $name
And now deploy the function app to Azure with the following Azure Core Function Tools commmand:
func azure functionapp publish $name --csharp --force
This will take several minutes. When complete, the system provides a URL by the output of the deployment. Copy that URL to the clipboard.
Go back to the Azure Portal in the browser. Go to the overview of the function app. This will be in the All resources list as an app service with a name starting with fa-. This is also seen as ouput of the above command to get the function app name.
From the function app overview, refresh the view of the function app in the tree on the left side. Click on the function named MyHttoFunction.
This shows the open file function.json.
On the left of the browser page, click on Test. Wait for the panel to open.
In the query section, click + Add parameter, and add a parameter name. Enter a value without spaces or special characters.
Go to the bottom of the panel and press the Run button. In a moment, the output will show a Status: 200 OK message above the Run button if everything worked.