2018 Microsoft Azure Global Bootcamp

Develop & Deploy Azure Functions using Visual Studio

Please follow the instructions https://docs.microsoft.com/en-us/azure/azure-functions/functions-develop-vs

• Setup Azure Development workload on Visual Studio 2017
• Update Azure Functions and Web Jobs Tools
• Create an Azure Functions App
• Deploy Azure Functions

Setup CosmosDB using Azure Portal

Please follow the instructions https://docs.microsoft.com/en-us/azure/cosmos-db/create-sql-api-dotnet

• Create a database account
• Add a collection
• Add sample data
• Query your data

Ignore the rest of the sections on this page

Integrate CosmosDB with Azure Functions

• Add Nuget package Microsoft.Azure.WebJobs.Extensions.DocumentDB to Azure Functions App
• Add DocumentDB binding to the Run method

public static HttpResponseMessage Run([HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "myapi/{id}")]HttpRequestMessage req, string id, TraceWriter log,
              [DocumentDB("CosmosDB", "CosmosDBCollection", SqlQuery = "select * from c where c.id = {id}", ConnectionStringSetting = "CosmosDBConnection")]IEnumerable<dynamic> inputDocuments,
              [DocumentDB("CosmosDB", "CosmosDBCollection", ConnectionStringSetting = "CosmosDBConnection")]out dynamic outputDocument)

{
    var inputDoc = inputDocuments.FirstOrDefault();
    outputDocument = inputDoc;
    var response = new HttpResponseMessage()
    {
        StatusCode = HttpStatusCode.OK,
        Content = new StringContent(JsonConvert.SerializeObject(inputDoc), Encoding.UTF8, "application/json")
    };
    return response;
}

• Create CosmosDBConnection as an entry under values section in local.settings.json, and copy paste the CosmosDB Key here