Shangjie Chen 0094eea3ca feat!: Migrate DatabaseSessionService to use JSON serialization schema ...

Also provide a command line tool `adk migrate session` for DB migration

Addresses https://github.com/google/adk-python/discussions/3605
Addresses https://github.com/google/adk-python/issues/3681

To verify:
```
# Start one postgres DB
docker run --name my-postgres -d -e POSTGRES_DB=agent  -e POSTGRES_USER=agent  -e POSTGRES_PASSWORD=agent  -e PGDATA=/var/lib/postgresql/data/pgdata -v pgvolume:/var/lib/postgresql/data -p 5532:5432 postgres

# Connect to an old version of ADK and produce some query data
adk web --session_service_uri=postgresql://agent:agent@localhost:5532/agent

# Check out to the latest branch and restart ADK web
# You should see error log ask you to migrate the DB

# Start a new DB
docker run --name migration-test-db \
  -d \ --rm \ -e POSTGRES_DB=agent \ -e POSTGRES_USER=agent \ -e POSTGRES_PASSWORD=agent -e PGDATA=/var/lib/postgresql/data/pgdata -v migration_test_vol:/var/lib/postgresql/data -p 5533:5432 postgres

# DB Migration
adk migrate session \
  --source_db_url="postgresql://agent:agent@localhost:5532/agent" \
  --dest_db_url="postgresql://agent:agent@localhost:5533/agent"

# Run ADK web with the new DB
adk web --session_service_uri=postgresql+asyncpg://agent:agent@localhost:5533/agent

# You should see the data from old DB is migrated
```

Co-authored-by: Shangjie Chen <deanchen@google.com>
PiperOrigin-RevId: 837341139

2025-11-26 19:49:08 -08:00

..

integration

chore: Fix spelling in tests

2025-11-06 11:21:59 -08:00

unittests

feat!: Migrate DatabaseSessionService to use JSON serialization schema

2025-11-26 19:49:08 -08:00

__init__.py

Support async agent and model callbacks

2025-05-06 15:14:10 -07:00