.NET Rocks! vNext (Carl and Richard, John Papa) - How could you not try to do some node on Azure after listening to that episode?
Programming
Writing a Blazor App (David Pine) - This tutorial shows how to build a simple blazor app...and it's NOT the hello-word or todo.
Miscellaneous
Introducing Ghost 2.0 (John O'Nolan) - Woo that a big change! If you don't know Ghost already, it worth a try.
Azure Block Blob Storage Backup (Hemant Kathuria) - A very cool tutorial that explains all steps to build a full incremental back-up between azure blob storages (in two different subscription)]
How do you even know this crap? (Scott Hanselman) - An interesting post that successfully connects developers, dungeon & dragon, and poop~?
OBS for Twitch (John Papa) - A quick post about the OBS that everybody is talking about.
Vaporized: Solid Strategies for Success in a Dematerialized World (Robert Tercek) - I really loved that book. In this world of digital transformation where everything goes so fast, this book explains why you should care. In fact, it asked so many good questions and related facts. I like to pretend I'm aware of the new technologies. That I'm on the edge, that I'm aware of the trending stuff... But guess what?! I got surprised, and even a bit scare at one point. This book is a must. Enjoy! ASIN: B01F9G31H8
New recommendations in Azure Advisor (Kaitlyn Corazao) - This post provides a few more reasons to start looking at the advisor (but I'm sure you all already doing it.)
How to setup ASP.NET Core 2.1 on Linux in under 10 minutes (Daniel Crabtree) - Nice tutorial that goes further tthan simply the creation of the hello word application by showing some debugging configuration, and executing alternatives.
Power BI and Sudoku – Yes Please (Mike Carlo) - Awesome! I really like when people think outside of the box. This post gives you link to the game and to a more detailed post.
A really amazing book packed of very interesting advice. Things that you kind of already knew, or at least had a feeling you maybe knew are clearly explained to you.
After reading (or listening) this book, you will know why, and you can decide to fight it or change the when... improve your performance and use your time and energy on something else.
The other day, a friend asked me how he could add some functionality to an existing application without having access to the code. It the perfect case to demo some Azure Functions capability, so I jumped on the occasion. Because my friend is a Node.js developer on Linux, and I knew it was supported, I decided to try that combination. I know Node, but I'm definitely not and expert since I don't practice very often.
This post is my journey building that demo. I was out of my comfort zone, coding in Node and working on a Linux machine, but not that far... Because these days, you can "do some Azure" from anywhere.
The Goal
Coding an Azure Function that will connect to an SQL Database (it could be any data source). Using Node.js and tools available on Unbuntu.
Note: In this post, I will be using Visual Studio Code, but you could also create your function directly in the Azure Portal or from Visual Stusio.
Getting Started
If you are a regular reader of this blog, you know how I like Visual Studio Code. It's a great tool available on Mac Linux and Windows and gives you the opportunity to enjoy all its feature from anywhere feeling like if you were in your cozy and familiar environment. If VSCode is not already installed on your machine, go grap your free version on http://code.visualstudio.com.
Many extensions are available for VSCode, and one gives us the capability to code and deploy Azure Function. To install it, open VSCode and select the extension icon and search for Azure Function; it's the one with the yellow lighting and the blue angle brackets.
Create the Azure Function
To get started let's great an Azure Function project. By sure to be in the folder where you wish to create your Function App. Open the Command Pallette (Ctrl + Shift + p) and type Azure Function. Select Azure Functions: Create New Project. That will add some configuration files for the Functions App.
Now Let's create a Function. You could reopen again the Command Palette and search for Azure Function: Create Function, but let's use the UI this time. At the bottom left of the Explorer section, you should see a new section called AZURE FUNCTIONS. Click on the little lighting to Create a new Function.
After you specify the Function App name, the Azure subscription and other little essential, a new folder will be added in your folder structure, and the function is created. The code of our function is in the file Index.js. At the moment, of writing this post only Javascript is supported by the VSCode extension.
Open the file index.js and replace all its content by the following code.
var Connection = require('tedious').Connection;
var Request = require('tedious').Request
var TYPES = require('tedious').TYPES;
module.exports = function (context, myTimer) {
var _currentData = {};
var config = {
userName: 'frankadmin',
password: 'MyPassw0rd!',
server: 'clouden5srv.database.windows.net',
options: {encrypt: true, database: 'clouden5db'}
};
var connection = new Connection(config);
connection.on('connect', function(err) {
context.log("Connected");
getPerformance();
});
function getPerformance() {
request = new Request("SELECT 'Best' = MIN(FivekmTime), 'Average' = AVG(FivekmTime) FROM RunnerPerformance;", function(err) {
if (err) {
context.log(err);}
});
request.on('row', function(columns) {
_currentData.Best = columns[0].value;
_currentData.Average = columns[1].value;;
context.log(_currentData);
});
request.on('requestCompleted', function () {
saveStatistic();
});
connection.execSql(request);
}
function saveStatistic() {
request = new Request("UPDATE Statistic SET BestTime=@best, AverageTime=@average;", function(err) {
if (err) {
context.log(err);}
});
request.addParameter('best', TYPES.Int, _currentData.Best);
request.addParameter('average', TYPES.Int, _currentData.Average);
request.on('row', function(columns) {
columns.forEach(function(column) {
if (column.value === null) {
context.log('NULL');
} else {
context.log("Statistic Updated.");
}
});
});
connection.execSql(request);
}
context.done();
};
The code just to demonstrate how to connect to an SQL Database and do not represent the best practices. At the top, we have some declaration the used the package tedious; I will get back to that later. A that, I've created a connection using the configuration declared just before. Then we hook some function to some event. On connection connect the function getPerformance() is called to fetch the data.
On request row event we grab the data and do the "math", then finally on requestCompleted we call the second sub-function that will update the database with the new value. To get more information and see more example about tedious, check the GitHub repository.
Publish to Azure
All the code is ready; it's now time to publish our function to Azure. One more time you could to that by the Command Palette, or the Extension menu. Use the method of your choice and select Deploy to Function App. After a few seconds only our Function will be deployed in Azure.
Navigate to portal.azure.com and get to your Function App. If you try to Run the Function right now, you will get an error because tedious is not recognized.
Install the dependencies
We need to install the dependencies for the Function App, in this case tedious. A very simple way is to create a package.json file and to use the Kudu console ton install it. Create a package.json file with the following json in it:
Open the Kudu interface. You can reach it by clicking on the Function App then the tab Platform features and finally Advanced tools (Kudu). Kudu is also available directly by the URL [FunctionAppNAme].scm.azurewebsites.net (ex: https://clouden5minutes.scm.azurewebsites.net ). Select the Debug consoleCMD. Than in the top section navigate to the folder home\site\wwwroot. Drag & drop the package.json file. Once the file is uploaded, type the command npm install to download and install all the dependencies declared in our file. Once it all done you should restart the Function App.
Wrapping up & my thoughts
There it is, if you go back now to your Function and try to execute it will work perfectly. It's true that I'm familiar with Azure Function and SQL Database. However, for a first experience using Ubuntu and Node.js in the mix, I was expecting more resistance. One more time VSCode was really useful and everything was done with ease.
For those of you that would like to test this exact function, here the SQL code to generate what will be required for the database side.
CREATE TABLE RunnerPerformance(
Id INT IDENTITY(1,1) PRIMARY KEY,
FivekmTime INT
);
CREATE TABLE Statistic(
Id INT IDENTITY(1,1) PRIMARY KEY,
BestTime INT,
AverageTime INT
);
INSERT Statistic (BestTime, AverageTime) VALUES (1, 1);
DECLARE @cnt INT = 0;
WHILE @cnt < 10
BEGIN
INSERT INTO RunnerPerformance (FivekmTime)
SELECT 9+FLOOR((50-9+1)*RAND(CONVERT(VARBINARY,NEWID())));
SET @cnt = @cnt + 1;
END;
Writing tests in Postman (joyce) - With all the connected things and all the API in our system, this post shows a brilliant and simple way to test all those external calls.
How we set up daily Azure spending alerts and saved $10k (Mike Larah) - Cloudyn is definitely a must in many cases. I need to see how it manages CSP subscriptions and limited access for clients. This post also shared how to integrate it in Slack, pretty cool.
.NET Rocks! Azure Event Grid with Dan Rosanova (Carl Franklin, Richard Campbell) - I really liked that episode with Dan. It was nice listening to him talking an making reference to Biztalk and Logic App.
OpenAPI is not what I thought (Darrel Miller ) - I hear you my friend, loud and clear. Let's use OpenAPI the way it should be. Very interesting post for an inside man sharing his thoughts about the purpose of the tool.
#222: Patrick Lencioni—Getting Hiring Right (EntreLeadership Team) - It was my first episode of this podcast, but definitely not the last one. Very interesting speakers... nice books referenced... loved it.
Why Your Boss Makes You Punch a Time Clock (Suzanne Lucas Suzanne Lucas is a freelance writer who spent 10 years in corporate human resources, where she hired, fired, managed the numbers, and double-checked with t) - Most of us have to do timesheets... I'm sure that at one point, you asked yourself the reason about it. It's time read an answer, in this post.
Azure Logic Apps - Retry Policy (Sriram Hariharan) - This post explains how to customize a key feature to build successful integration solution in cloud programming.
Tips & Tricks: Cost savings using Logic Apps (Rene Brauwers) - Very interesting post where the author did the exercise of comparing different scenario's performances and prices.
Programming
What is Kubernetes? An Intro for Beginners (Paul Burt) - This post is the perfect starting point to know what is Kubernetes are and understands what it can do for you, without getting deep technical.
Sneak peek: A new Azure Cloud Console (Brendan Burns Partner Architect) - Wow! This post presents a much more comfortable terminal interface for Azure. Really slick.
Getting Started with YAML in Node.js using js-yaml (Dave Johnson) - Interesting post, I've been using YAML for few years now. However, it's true that when I did some work with Node.js I switched to json... Next time then...
New book: Begin to Code with C# (Kim Spilker) - C# is a very popular and powerful language, I'm happy to see new books to bring more people aboard.
DocumentDB protocol support for MongoDB (Vincent-Philippe Lauzon) - Woooo. That huge! We can now swap any mongodb for a documentdb and your tooling or app will continue to work.
Microsoft shows how bad Chrome is for your laptop’s battery (Tom Warren) - Wow when a friend of mine shared me that post, I didn’t expect Edge to be that good. And with the new release that is bridging back add-ons… Does Microsoft just came back in the race to be the best web browser?!
An application revolution powered by the cloud (Mark Russinovich) - This post is a great introduction to the air of micro-services. It explains the evolution from the monolithic architecture and introduces some container system.
Azure Active Directory Application (Vincent-Philippe Lauzon) - This post is a good intro to Azure Active Directory and how it could help us in our cloud applications.
Why Microsoft Azure? - Interesting post that explains major reasons why Microsoft is a lead in cloud computing.
Express - This is the perfect post to get started with node.js with Azure. This post starts with you step by step from a vanilla computer running OS X or Linux to your first App.
Exploring Azure DocumentDB in Visual Studio (Andrew Hoh) - This post reveals all the feature of this very powerful addition the already great cloud explorer, VisualStudio add-on.
Visual Studio Code: PowerShell Extension (Sergiy Baydachnyy) - Nice post of a series and cool introduction to a useful vscode extension... if you still don't have already installed it yet.
Cloud
Vaporized: Solid Strategies for Success in a Dematerialized World
Cloud
