Is there a way to programmatically enable/disable an Azure function?
I can enable/disable a function using the portal under the "Manage" section, which causes a request to be sent to https://<myfunctionapp>.scm.azurewebsites.net/api/functions/<myfunction>
The JSON payload looks a bit like:
{
"name":"SystemEventFunction",
"config":{
"disabled":true,
"bindings":[
// the bindings for this function
]
}
// lots of other properties (mostly URIs)
}
I'm creating a management tool outside of the portal that will allow users to enable and disable functions.
Hoping I can avoid creating the JSON payload by hand, so I'm wondering if there is something in an SDK (WebJobs??) that has this functionality.
No, this is not possible currently. The disabled metadata property in function.json is what determines whether a function is enabled. The portal just updates that value when you enable/disable in the portal.
Not sure if it will meet your needs, but I'll point out that there is also a host.json functions array that can be used to control the set of functions that will be loaded (documented here). So for example, if you only wanted 2 of your 10 functions enabled, you could set this property to an array containing only those 2 function names (e.g. "functions": [ "QueueProcessor", "GitHubWebHook" ]), and only those will be loaded/enabled. However, this is slightly different than enable/disable in that you won't be able to invoke the excluded functions via the portal, whereas you can portal invoke disabled functions.