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mobizt / Firebase-ESP32

[DEPRECATED]🔥 Firebase RTDB Arduino Library for ESP32. The complete, fast, secured and reliable Firebase Arduino client library that supports CRUD (create, read, update, delete) and Stream operations.
MIT License
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streamCallback gets triggered randomly #55

Closed Maverick324567 closed 4 years ago

Maverick324567 commented 4 years ago

I am having this strange issue with streamCallback function. Sometimes, even if there is no change in the Firebase RTDB, callback function gets called. Can anybody please help me out?

mobizt commented 4 years ago

It's possible that stream was timed out, the stream restarts then you get that response.

You may need to compare the existing data and new data before process.

Set the stream timeout callback to debug.

Maverick324567 commented 4 years ago

It's possible that stream was timed out, the stream restarts then you get that response.

You may need to compare the existing data and new data before process.

Set the stream timeout callback to debug.

The streamTimeoutCallback doesn't get called. Only the streamCallback is getting called randomly. May be there's a problem with the database itself.

Maverick324567 commented 4 years ago

Okay, now I have a little understanding of what exactly is happening. When I modify a particular field in firebase RTDB, streamCallback gets called. Now inside streamCallback function I set a particular field in database. This is when the streamCallback gets called again. I have used different FirebaseData objects for streamCallback and for setting database fields. But still I am having this issue. Can you please help me out?

mobizt commented 4 years ago

You should avoid to change data in stream path inside the stream callback.

If you intend to do this, you should check the returned event path.

The event path returns from firebase is the relative path from stream path, for example

If you set the stream path to root/myData, and if you set the data to root/myData/Sensor1.

The event path returns when stream event changes will be /Sensor1. Then you can quit stream callback function or continue to run.