Azure Funda

In this blog, I am going to cover some of the most frequent issues/requirements people face when developing Azure Functions via Visual Studio. These topics are based on my learnings while developing Azure Functions and I wanted to share the same with community out there. Here are the topics that I will cover in this blog post - Local Debugging of Service Bus Triggered Azure Functions Solving CORS Issue - Local Debugging and after deployment to Azure Run Azure Functions Locally on a different Port Debug Timer Triggered Azure Functions So let's get started. Local Debugging of Service Bus Triggered Azure Functions When you try to debug your Service Bus triggered Azure Function locally, you would need to ensure that there are no other listeners active for your Service Bus Topic and Subscription. Listeners here refer to other people trying to debug on same Service Bus, Topic and Subscription, other Azure Functions or any WebJobs deployed on Azure and running c...

Introduction: This blog describes how you can retrieve data from Dynamics 365 CRM/CE Online in an Azure Function, using CRM OData Web API. The CRM Web API has a couple of advantages over the traditional SOAP based approach to interact with CRM. These are rest based services, its easy to use and transport over http protocol , and there is no need to use additional web resources (XrmServiceToolkit ) of SDK (SDK.REST). Here is a detailed documentation on CRM OData Wbeb API. I will be using an Azure Function Application in Visual Studio 2017 to retrieve records from Dynamics 365 CRM/CE, by making use of OData API Endpoint provided by CRM. Prerequisites: Dynamics 365 CRM Online Trial https://trials.dynamics.com/ https://signup.microsoft.com/Signup?OfferId=bd569279-37f5-4f5c-99d0-425873bb9a4b&dl=DYN365_ENTERPRISE_PLAN1&Culture=en-us&Country=us&ali=1 Azure Subscription related to CRM Online instance https://portal.azure.com/ Visual Studio 2017 with Cl...

Concurrency & Isolation Concurrency is one of the most common requirements when we don't want the resource to be accessed by multiple requests at the same time. Lets say we have a Database that holds products stock information, then it is very important that any read/write operation that happens on the Database must hold the property of Isolation . The isolation property ensures that the concurrent execution of transactions results in a system state that would be obtained if transactions were executed sequentially, i.e., one after the other. Providing isolation is the main goal of concurrency control. Depending on the concurrency control method (i.e., if it uses strict – as opposed to relaxed – serializability), the effects of an incomplete transaction might not even be visible to another transaction. Options Available in Azure Functions Recently while working on Azure Functions, I discovered a really simple way of handling Concurrency via code. There are ways to con...

Recently, I was building an Azure Function from Visual Studio and encountered an issue with the auto generated Function.cs class file. My requirement was to create an Azure Function that would get triggered as soon as we receive a message on an Azure Service Bus Topic. For this I tried to use the Project template available in Visual Studio 2017. Unfortunately, when I tried to provide all the required values, and run the function, I got following error: First you get a warning which says: Warning: Cannot find value named 'Endpoint=sb:......' in local.settings.json that matches 'connection' property set on 'serviceBusTrigger' in '\Source\repos\FunctionApp1\MyFunction\bin\Debug\net461\Function1\function.json'. You can run 'func azure functionapp fetch-app-settings <functionAppName>' or specify a connection string in local.settings.json. This warning was followed by an error: [2/12/2018 9:48:05 AM] A ScriptHost error has occurre...