Provide a way to distinguish identical LLM calls

[polaris340]

Is your feature request related to a problem? Please describe.
Some LLMs (e.g., Sonnet) return both text and function call(s), which makes it difficult to handle responses in streaming mode. This issue also affects the ADK web UI, as shown in the attached image.

Describe the solution you'd like
Use the same event ID for all text chunks belonging to a single LLM response — but only for the text chunks. This allows the client to group and manage them correctly. (Applying the same ID to all parts, including the function call, would cause issues such as #297 .)

Describe alternatives you've considered
Add an additional field to identify a single LLM call. However, this would be a breaking change.

Additional context
Red: before function call (partial: true)
Green: after function call (partial: true)
Blue: after function call (partial: false)

id	partial	content	timestamp
gpXKpEQM	true	I	1748508250.12534
7AWtc3D1	true	'll check the current weather in	1748508250.12534
BD22GY1Z	true	New York for you	1748508250.12534
YjwN742c	true	.	1748508250.12534
kqGe3C4E	false	functionCall: get_weather(city="New York")	1748508250.12534
I1aQFpJL	null	functionResponse: The weather in New York is sunny...	1748508252.415856
3Ns77VqL	true	The weather in New	1748508252.417286
EO3CB5mD	true	York is currently	1748508252.417286
EtVvvHEC	true	sunny with a temperature	1748508252.417286
ZbPkcEDI	true	of 25°	1748508252.417286
OZGIetlW	true	C (77°F). It	1748508252.417286
hMfOtwCo	true	's a beautiful day	1748508252.417286
irK5ZS4t	true	there!	1748508252.417286
JJlRueia	false	The weather in New York is currently sunny with a temperature of 25°C (77°F)...	1748508252.417286

[barath-mondee]

Hey @polaris340, were you able to find any workaround for this?

[polaris340]

Hey @polaris340, were you able to find any workaround for this?

I just overwrote the IDs of the partial events with the first event's ID.

[klateefa]

@polaris340 Thanks for your request! We are looking into it,This feature is currently under review
Thank you for understanding.