Merge https://github.com/google/adk-python/pull/1079
Fixes part of #356
Add usage attributes to span.
Note: Since the handling of GenAI event bodies in OpenTelemetry has not yet been determined, I have temporarily added only attributes related to usage.
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/adk-python/pull/1079 from soundTricker:feature/356-support-more-opentelemetry-semantics 99a9d0352b4bca165baa645440e39ce7199f072b
PiperOrigin-RevId: 774834279
This change accepts the `google.auth.credentials.Credentials` type for `BigQueryCredentialsConfig`, so any subclass of that, including `google.oauth2.credentials.Credentials` would work to integrate with BigQuery service. This opens up a whole range of possibilities, such as using service account credentials to deploy an agent using these tools.
PiperOrigin-RevId: 773190440
This change sets an explicit project id in the BigQuery client from the conversation context. Without this the client was trying to set a project from the environment's application default credentials and running into issues where application default credentials is not available.
PiperOrigin-RevId: 772695883
#non-breaking
The correct conversion from 25 degrees Celsius is 77 degrees Fahrenheit. The previous value of 41 was wrong.
PiperOrigin-RevId: 772528757
Context: we'd like to separate fetcher into exchanger and refresher later. This cl help to extract the common utility that will be used by both exchanger and refresher.
PiperOrigin-RevId: 772257995
