Executing Azure Stored Procedure from Azure Triggering Function - azure

Question

I wrote a stored procedure for deleting records from cosmosDB based on updation date of the document.
The cosmosDB collection is having large number (say 500) of partition keys so that I have to execute the stored procedure 500 times.
I am trying to execute an azure stored procedure from Azure time triggering function.
Below are the codes written in azure triggering function:
Added new file project.json
{
"frameworks": {
"net46":{
"dependencies": {
"Microsoft.Azure.DocumentDB": "2.0.0"
}
}
}
}
run.csx fle is updated as below.
#r "Microsoft.Azure.Documents.Client"
using System;
using Microsoft.Azure.Documents;
using Microsoft.Azure.Documents.Client;
public static async Task Run(TimerInfo myTimer, IEnumerable<dynamic>
inputDocument, TraceWriter log)
{
log.Info($"C# Timer trigger function started at: {DateTime.Now}");
// Get the date 6 months before from Current Time in IST and convert to Epoch value.
TimeZoneInfo INDIAN_ZONE = TimeZoneInfo.FindSystemTimeZoneById("India
Standard Time");
DateTime indianTime =
TimeZoneInfo.ConvertTimeFromUtc(DateTime.UtcNow.AddDays(-180),
INDIAN_ZONE);
long epochTime = (long)(indianTime - new DateTime(1970, 1,
1)).TotalSeconds;
DocumentClient client;
string endpoint = "https://***cosmosdb.documents.azure.com:443/";
string key = "****";
client = new DocumentClient(new Uri(endpoint), key);
foreach (var doc in inputDocument)
{
string partKey = doc.NUM;
StoredProcedureResponse<bool> sprocResponse = await
client.ExecuteStoredProcedureAsync<bool>(
"/dbs/DB_NAME/colls/COLLECTION_NAME/sprocs/STORED PROC_NAME/",new
RequestOptions { PartitionKey = new PartitionKey(partKey) });
log.Info($"Cosmos DB is updated at: {DateTime.Now}");
}
}
I am getting the below error while compiling the above code.
2019-08-22T15:30:01.759 [Error] Exception while executing function: Functions.TimerTriggerCSharp1. Microsoft.Azure.WebJobs.Script: One or more errors occurred. Microsoft.Azure.Documents.Client: Failed to deserialize stored procedure response or convert it to type 'System.Boolean': Unexpected character encountered while parsing value: {. Path '', line 1, position 1. Newtonsoft.Json: Unexpected character encountered while parsing value: {. Path '', line 1, position 1.
2019-08-22T15:30:01.822 [Error] Function completed (Failure, Id=02da4d71-8207-4227-9c79-1cc277439c20, Duration=1814ms)
I have to pass a date parameter and array of partition keys while executing the stored procedure.
I am totally stuck in this stage. what could be done to resolve this issue ?

Answer 1

The error message means that your script code of your Azure Function is not correct.
Remove all private and static declarations inside your function.
private static DocumentClient client;
static string endpoint;
static string key
==>
DocumentClient client;
string endpoint;
string key;
General advise: Do not author Functions in the Azure portal (in .csx). Do yourself a favor and use a proper IDE such as VS Code.

Answer 2

If you are using the Portal, you need to pull in the dependency at the top of your Function like so:
#r "Microsoft.Azure.Documents.Client"
using Microsoft.Azure.Documents;
using Microsoft.Azure.Documents.Client;
And please, use a newer version of the SDK, 1.7.1 is from more than 3 years ago: https://www.nuget.org/packages/Microsoft.Azure.DocumentDB/