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Access Storage Account Connection String Within Function Body

I have a queue trigger (for example):
[FunctionName("Handle-Invoice")]
[StorageAccount("StorageAccountConnectionString")]
public async Task InvoiceQueueTrigger(
[QueueTrigger("invoice-queue")] CloudQueueMessage cloudMessage,
ExecutionContext context,
ILogger log)
{
// Async code which might need access to the storage account for the queue
}
Where StorageAccountConnectionString is defined in the function's config.
I'm wondering if there's a way to implicitly access the value of the connection string defined in the StorageAccount attribute?
I know I can access the value directly from either the environment or configuration but it'd be good to access the value either by a binding or some other method.
Thanks.

Azure Function Trigger Name/Connections from App Configuration

Is there now a way to set the Trigger Properties(Name/Connection) using the value from Azure App Configuration?.
I added a startup class that reads the data from Azure App Configuration but it seems the trigger set its properties earlier than that, therefore not able to bind the data that came from the app configuration.
I also found this thread about it but im not sure if there is a new update?:
https://github.com/MicrosoftDocs/azure-docs/issues/63419
https://github.com/Azure/AppConfiguration/issues/203

You can do this. The following code gets the name of the queue to monitor from an app setting, and it gets the queue message creation time in the insertionTime parameter:
public static class BindingExpressionsExample
{
[FunctionName("LogQueueMessage")]
public static void Run(
[QueueTrigger("%queueappsetting%")] string myQueueItem,
DateTimeOffset insertionTime,
ILogger log)
{
log.LogInformation($"Message content: {myQueueItem}");
log.LogInformation($"Created at: {insertionTime}");
}
}
Similarly, you can use this approach for other triggers.

Is it possible to Pass Azure Function ServiceBusTrigger connection at runtime

My Code Look like this :
public class Startup : IWebJobsStartup
{
public async void Configure(IWebJobsBuilder builder)
{
Get Connection string Via HTTP Service.
ServiceBusConnectionString = jArray["connectionString"].ToString();
}
}
And I want to Pass Connection Like this
[FunctionName("FunctionTopicMessageLogger")]
public void Run([ServiceBusTrigger("topic", "FunctionTopicMessageLogger",Connection = **ServiceBusConnectionString** )]Message mySbMsg)
{
}
This is my Local.setting.json file for first time
{
"IsEncrypted": false,
"Values": {
"AzureWebJobsStorage": "UseDevelopmentStorage=true",
"Connectinstring": " "
}
}
Problem is that connection only take Const Parameter (So it's not allow to change) So i am trying to write in a local.setting.json and trying to read it from there, I am getting error first time when i am running , and from second time connection is there so it's working fine.
Is i am doing something wrong Please suggest.

There are two important parts in the solution for your problem.
During creation of Azure Function with Service Bus trigger you have to specify the name of the connection string parameter that will be used to retrieve connection string value. In this case if you type "ServiceBusConnectionString" you have to add such configuration parameter in the local.settings.json file in the "ConnectionStrings" section:
{
"IsEncrypted": false,
"Values": {
"AzureWebJobsStorage": "UseDevelopmentStorage=true",
"FUNCTIONS_WORKER_RUNTIME": "dotnet"
},
"ConnectionStrings": {
"ServiceBusConnectionString": "xxx"
}
}
After depoying your function to Azure, you should use "Configuration" section in the portal and you should avoid using "local.settings.json" file because it is only for local development:
I hope this will help.

If your intention is to use the key Connectionstring from the local.settings.json, you should be able to get the value from there automatically just by doing this:
public static void Run([ServiceBusTrigger("topic", "FunctionTopicMessageLogger", Connection = "connectionString")]string mySbMsg)
The value for Connection is the name of the Key from the local.settings.json file.

If you don't have a lot of different Service Bus, you can create one function for each different connectionString you have.
Each function needs to know the connectionString before starting, and start waiting for message in the service bus.
If you have to do that dynamically, you don't have to use an Azure function, you can use the Service Bus SDK:
Here you can see how to manage a client manually: https://learn.microsoft.com/en-us/azure/service-bus-messaging/service-bus-dotnet-get-started-with-queues
I hope this will help you!

Setup configuration and run azure queue trigger function locally

I am trying to run an azure queue trigger function locally. I installed Azure Storage Emulator and ran the command "AzureStorageEmulator.exe init" to create "AzureStorageEmulatorDb59" database on the "(localdb)\MSSQLLocalDB" server.
In my azure functions project which has the queue trigger function, I have a local.settings.json file. What settings should be added in that file and what exactly should be the connection string and where should I add it? My queue trigger function is mentioned below. What should be added in place of "my-queue" mentioned after "QueueTrigger" attribute? Please help me with this
[FunctionName("TestQTFunction")]
public static void Run([QueueTrigger("my-queue", Connection = "AzureQueueConnectionString")]string myQueueItem, ILogger log)
{
// Do something
}

Update:
In local.settings.json:
{
"IsEncrypted": false,
"Values": {
"AzureWebJobsStorage": "UseDevelopmentStorage=true",
"FUNCTIONS_WORKER_RUNTIME": "dotnet"
}
}
In my code:
[FunctionName("Function1")]
public static void Run([QueueTrigger("myqueue", Connection = "AzureWebJobsStorage")]string myQueueItem, ILogger log)
{
log.LogInformation($"C# Queue trigger function processed: {myQueueItem}");
}
"my-queue" is the name of the queue the one you want to trigger, when a message is put into the queue. So change it to the queue name which you want to trigger.
The connection string in local.settings.json should be in this format:
"AzureWebJobsStorage":"DefaultEndpointsProtocol=https;AccountName=[name];AccountKey=[key]"
also make sure right click the local.settings.json file -> property -> set "copy to output directry" to "copy if newer".
then in the Run method, change connection="AzureQueueConnectionString" to Connection = "AzureWebJobsStorage".

azure function queueTrigger error - Microsoft Azure WebJobs SDK '[Hidden Credential]' connection string is missing or empty

I have created new Azure Function for QueueTrigger but after running it locally getting some weird error below.
Function1.cs
public static class Function1
{
[FunctionName("Function1")]
public static void Run([QueueTrigger("demoqueue", Connection = "DefaultEndpointsProtocol=myconnectionstring")]string myQueueItem, TraceWriter log)
{
log.Info($"C# Queue trigger function processed: {myQueueItem}");
}
}
local.setting.json
{
"IsEncrypted": false,
"Values": {
"AzureWebJobsStorage": "UseDevelopmentStorage=true",
"AzureWebJobsDashboard": "UseDevelopmentStorage=true"
}
}
Error -
[11/14/2018 4:36:15 PM] The following 1 functions are in error:
[11/14/2018 4:36:15 PM] Run: Microsoft.Azure.WebJobs.Host: Error
indexing method 'Function1.Run'. Microsoft.Azure.WebJobs.Host:
Microsoft Azure WebJobs SDK '[Hidden Credential]' connection string is
missing or empty. The Microsoft Azure Storage account connection
string can be set in the following ways: [11/14/2018 4:36:15 PM] 1.
Set the connection string named '[Hidden Credential]' in the
connectionStrings section of the .config file in the following format
, or [11/14/2018 4:36:15 PM] 2. Set the environment variable named
'[Hidden Credential]', or [11/14/2018 4:36:15 PM] 3. Set corresponding
property of JobHostConfiguration.

You need to specify the key of the app setting where your connection string is stored in the config not the connectionstring itself.
public static void Run([QueueTrigger("demoqueue", Connection = "NameOfYourAppSetting")]