CODEWITHSUNDEEP
azureazure-functionsazure-cosmosdb
Christine Garcia
Christine Garcia

Reputation: 23

Azure Function does not connect to Cosmos DB

I keep getting an error in application insight when trying to run my Azure function, it works locally on my computer but does not work in Azure. Here is the error message:

System.InvalidOperationException at Microsoft.Azure.WebJobs.Extensions.CosmosDB.CosmosDBTriggerAttributeBindingProvider.ResolveConnectionString

I have added CosmosDbTrigger as a connection string in the settings configurations, so I do not understand what's wrong. The function is triggered when a change is made in the cosmos db so if I change something in the db, and am running the function localy on my pc it works, It's only in the azure portal it keeps failing. The triggers are also working, so I think it's only the function that's the problem.

Upvotes: 0

Views: 1361

Answers (1)

SaiSakethGuduru
SaiSakethGuduru

Reputation: 2440

As there are many other discussions happening with similar issue from this link and check this link and try re checking your configuration file.

internal string ResolveConnectionString(string unresolvedConnectionString, string propertyName)
{
    // First, resolve the string.
    if (!string.IsNullOrEmpty(unresolvedConnectionString))
    {
        string resolvedString = _configuration.GetConnectionStringOrSetting(unresolvedConnectionString);

        if (string.IsNullOrEmpty(resolvedString))
        {
            throw new InvalidOperationException($"Unable to resolve app setting for property '{nameof(CosmosDBTriggerAttribute)}.{propertyName}'. Make sure the app setting exists and has a valid value.");
        }

        return resolvedString;
    }

    // If that didn't exist, fall back to options.
    return _options.ConnectionString;
}

Also, check your _options.ConnectionString value and set that dynamically.

builder.Services.PostConfigure<CosmosDBOptions>(options =>
{
    options.ConnectionString = "dynamically set the connection string value here";
});

Upvotes: 1

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