I'm having azure worker role project. below is a code from my configuration (.cscfg).
c# (FLAG = 1;)
Through c# code i want to change this value.
Is there any way for dynamically changing value of an azure service configuration?
Please instruct me how to do it.
Simple answer is that you can't change the value of just one setting through code as RoleEnvironment class only exposes a Get method and there's no Set method.
A convoluted approach would be to invoke Service Management API, read the configuration settings file using Get Deployment operation, change the XML file and the call Change Deployment Configuration operation. Not sure how this would work out if you're changing the configuration from the same role though.
Related
I am pretty a new at azure function development
and I a not really understand how configuration for azure function, especially for local development
I need to set up some parameters at configuration and use them at my code
I have appsettings.json and local.settings.json
I added IConfiguration configuration as parameter to constructor to some my class
and try to get value by calling
_configuration["MyVar"]
but values are always null. (like it not read appsettings.json)
that is the best practice to get/set some parameters values for local test and use them after on azure side.
You can set your configuration values in local.settings.json for debugging and in the Function AppSettings in Azure Portal for when it's deployed. If you want to use a custom appsettings file, you need a FunctionStartup class.
You won't be able to configure the trigger bindings in the appsettings file, you'll have to use the Function AppSettings for that. Please see this StackOverflow post for more details.
Recommended way to read App settings in Azure functions(in App Service) is:
var value = Environment.GetEnvironmentVariable("your_key_here");
Check out this article for detailed explanation: Azure — Reading application settings in Azure Functions (ASP.NET Core)
I want to simplify deployment of my Azure Functions v3 project as much as possible.
As an example, take this function, which uses a binding expression to refer to the DoTheThingSchedule appsetting:
[FunctionName("DoTheThing")]
public async Task Run([TimerTrigger("%DoTheThingSchedule%")]TimerInfo timer)
{
// do the thing
}
For local development I can configure a value for DoTheThingSchedule in local.settings.json, but I haven't found a way to configure a default value in production, which means I'll always have to explicitly configure this setting in Azure.
Does anyone know of a way to work around this?
Azure needs you to add settings in configuration settings in azure. And it will not upload local.settings.json file to azure. But if you are using VS to publish, you can set the settings before publish:
We have a WCF SerivceHost (self-hosted), XML-configured in App.config. The host has already been opened.
We want to change a specific configuration value in the service's binding at runtime (from code).
Unfortunately, our current approach:
((SomeBinding) _serviceHost.Description.Endpoint.Single().Binding).SomeProp = value;
does not work. The configuration is not "applied". How to force a configuration reload at runtime?
A possible approach is this:
Modify the value in the config file at runtime (cannot find instructions for doing this, but the approach here may give you a start)
Reload the config from file using:
ConfigurationManager.RefreshSection("system.serviceModel/bindings");
I don't think your current approach of having the config initially set in xml and then trying to update it via code once the service host has started will work.
// Set LastRun to now
config.AppSettings.Settings["LastRun"].Value = DateTime.Now.ToString();
// Save all settings
config.Save(ConfigurationSaveMode.Modified);
This code was working fine in my development server but not in my production server. It seems like my program is unable to communicate with my app.config file. I have checked all the "obvious" . . Any ideas ... ?
From your code example, I cannot tell how your config variable is initialized. But, from the comments, you have a web app. Unless you are attempting to load a specific app.config file, the web app will attempt to get AppSettings from web.config.
It's not a good idea to programatically change the values of web.config. Changing web.config will cause an application restart.
If you have a different app.config for storing this type of information, that would be better than trying to change web.config. But you'll have to specifically load the file, something like this:
Configuration config = WebConfigurationManager.OpenWebConfiguration("yourPath\app.config");
ConfigurationManager.OpenExeConfiguration() is intended for use within an executable application not a web app. Try using WebConfigurationManager as shown above.
You find some more information in this SO question/answers.
More information can be found in this SO question/answer.
I have developped a custom WCF Web Service within a SharePoint 2010 Visual Studio empty project.
My web service is working well. The problem is related to the size of the request I can send to this web service. I have realized that is something around 300Kb. If I go bigger than that, the service/client is sending me an exception.
I've looked around on the web and see that the MaxReceivedMessageSize setting may be my solution. I've tried using a FeatureActivated method to set this information using this kind of request:
// increase maximum size of requests to this web service: http://msdn.microsoft.com/en-us/library/ff599489.aspx
SPWebService contentService = SPWebService.ContentService;
contentService.ClientRequestServiceSettings.MaxReceivedMessageSize = -1;
SPWcfServiceSettings csomWcfSettings = new SPWcfServiceSettings();
csomWcfSettings.MaxReceivedMessageSize = 10485760; // 10MB
contentService.WcfServiceSettings["PT-SP-P2S-DocumentCreator.svc"] = csomWcfSettings;
contentService.Update(); // access denied thrown here!
With that code, I have an Access denied (I'm actually the Site Collection Administrator).
I also know that this parameter may be set in the app.config of web service host but, in SharePoint, where to I need to change this parameter.
I think you should make this change in the web.config file of the Web Application in which the feature is activated. SharePoint provides APIs to make web.config changes. In fact, using APIs to make changes to your web.config is preferred option because SharePoint uses Timer Job and makes same updates to all Web Front End servers in your environment. There are 2 ways to make changes to web.config as described here:
http://msdn.microsoft.com/en-us/library/ms460914.aspx
In your case, since you want to make the change only when your feature is activated, you would take the API approach as documented here: http://msdn.microsoft.com/en-us/library/bb861909.aspx