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Trigger EventGrid Subscription On Blob Metadata Change
I currently have some Azure Functions which use BlobTrigger to initiate them. When I upload a blob it fires, when I change the metadata it fires. This is what I am trying to replicate using EventGrid Subscriptions which write to a Queue. I've made this change so that a get a more realtime trigger rather than waiting what could be minutes for the BlobTrigger to be called.
I am getting events written into the queue and my new AzureFunction running when an upload or replace occurs. This is perfect. I cannot find any way of triggering an event when just the metadata is updated. The metadata is being used as a way of deciding if further work should be undertaken on the blob. Eg: creating a preview or updating Azure Search.
I tried with no filters at all and still nothing was written to the queue when metadata changed. I can only assume this is not possible currently.
Can anyone advise if I have missed something or if this is a missing use case?
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Sean Feldman 211 Reputation points MVP
2020-06-17T19:41:55.023+00:00
1 additional answer
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Roman Kiss 2,236 Reputation points
2020-06-17T16:11:44.05+00:00 Hi James,
This feature is not currently supported. Have a look at all event types triggered by blob storage here.
Thanks
Roman