refactor(a2a): remove unused context id helpers

src/google/adk/a2a/converters/utils.py

@@ -15,8 +15,6 @@
 from __future__ import annotations
 
 ADK_METADATA_KEY_PREFIX = "adk_"
-ADK_CONTEXT_ID_PREFIX = "ADK"
-ADK_CONTEXT_ID_SEPARATOR = "/"
 
 
 def _get_adk_metadata_key(key: str) -> str:
@@ -34,58 +32,3 @@ def _get_adk_metadata_key(key: str) -> str:
   if not key:
     raise ValueError("Metadata key cannot be empty or None")
   return f"{ADK_METADATA_KEY_PREFIX}{key}"
-
-
-def _to_a2a_context_id(app_name: str, user_id: str, session_id: str) -> str:
-  """Converts app name, user id and session id to an A2A context id.
-
-  Args:
-    app_name: The app name.
-    user_id: The user id.
-    session_id: The session id.
-
-  Returns:
-    The A2A context id.
-
-  Raises:
-    ValueError: If any of the input parameters are empty or None.
-  """
-  if not all([app_name, user_id, session_id]):
-    raise ValueError(
-        "All parameters (app_name, user_id, session_id) must be non-empty"
-    )
-  return ADK_CONTEXT_ID_SEPARATOR.join(
-      [ADK_CONTEXT_ID_PREFIX, app_name, user_id, session_id]
-  )
-
-
-def _from_a2a_context_id(
-    context_id: str | None,
-) -> tuple[str, str, str] | tuple[None, None, None]:
-  """Converts an A2A context id to app name, user id and session id.
-  if context_id is None, return None, None, None
-  if context_id is not None, but not in the format of
-  ADK$app_name$user_id$session_id, return None, None, None
-
-  Args:
-    context_id: The A2A context id.
-
-  Returns:
-    The app name, user id and session id, or (None, None, None) if invalid.
-  """
-  if not context_id:
-    return None, None, None
-
-  try:
-    parts = context_id.split(ADK_CONTEXT_ID_SEPARATOR)
-    if len(parts) != 4:
-      return None, None, None
-
-    prefix, app_name, user_id, session_id = parts
-    if prefix == ADK_CONTEXT_ID_PREFIX and app_name and user_id and session_id:
-      return app_name, user_id, session_id
-  except ValueError:
-    # Handle any split errors gracefully
-    pass
-
-  return None, None, None

tests/unittests/a2a/converters/test_utils.py

@@ -12,10 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from google.adk.a2a.converters.utils import _from_a2a_context_id
 from google.adk.a2a.converters.utils import _get_adk_metadata_key
-from google.adk.a2a.converters.utils import _to_a2a_context_id
-from google.adk.a2a.converters.utils import ADK_CONTEXT_ID_PREFIX
 from google.adk.a2a.converters.utils import ADK_METADATA_KEY_PREFIX
 import pytest
 
@@ -48,157 +45,3 @@ def test_get_adk_metadata_key_whitespace(self):
     key = "   "
     result = _get_adk_metadata_key(key)
     assert result == f"{ADK_METADATA_KEY_PREFIX}{key}"
-
-  def test_to_a2a_context_id_success(self):
-    """Test successful context ID generation."""
-    app_name = "test-app"
-    user_id = "test-user"
-    session_id = "test-session"
-
-    result = _to_a2a_context_id(app_name, user_id, session_id)
-
-    expected = f"{ADK_CONTEXT_ID_PREFIX}/test-app/test-user/test-session"
-    assert result == expected
-
-  def test_to_a2a_context_id_empty_app_name(self):
-    """Test context ID generation with empty app name."""
-    with pytest.raises(
-        ValueError,
-        match=(
-            "All parameters \\(app_name, user_id, session_id\\) must be"
-            " non-empty"
-        ),
-    ):
-      _to_a2a_context_id("", "user", "session")
-
-  def test_to_a2a_context_id_empty_user_id(self):
-    """Test context ID generation with empty user ID."""
-    with pytest.raises(
-        ValueError,
-        match=(
-            "All parameters \\(app_name, user_id, session_id\\) must be"
-            " non-empty"
-        ),
-    ):
-      _to_a2a_context_id("app", "", "session")
-
-  def test_to_a2a_context_id_empty_session_id(self):
-    """Test context ID generation with empty session ID."""
-    with pytest.raises(
-        ValueError,
-        match=(
-            "All parameters \\(app_name, user_id, session_id\\) must be"
-            " non-empty"
-        ),
-    ):
-      _to_a2a_context_id("app", "user", "")
-
-  def test_to_a2a_context_id_none_values(self):
-    """Test context ID generation with None values."""
-    with pytest.raises(
-        ValueError,
-        match=(
-            "All parameters \\(app_name, user_id, session_id\\) must be"
-            " non-empty"
-        ),
-    ):
-      _to_a2a_context_id(None, "user", "session")
-
-  def test_to_a2a_context_id_special_characters(self):
-    """Test context ID generation with special characters."""
-    app_name = "test-app@2024"
-    user_id = "user_123"
-    session_id = "session-456"
-
-    result = _to_a2a_context_id(app_name, user_id, session_id)
-
-    expected = f"{ADK_CONTEXT_ID_PREFIX}/test-app@2024/user_123/session-456"
-    assert result == expected
-
-  def test_from_a2a_context_id_success(self):
-    """Test successful context ID parsing."""
-    context_id = f"{ADK_CONTEXT_ID_PREFIX}/test-app/test-user/test-session"
-
-    app_name, user_id, session_id = _from_a2a_context_id(context_id)
-
-    assert app_name == "test-app"
-    assert user_id == "test-user"
-    assert session_id == "test-session"
-
-  def test_from_a2a_context_id_none_input(self):
-    """Test context ID parsing with None input."""
-    result = _from_a2a_context_id(None)
-    assert result == (None, None, None)
-
-  def test_from_a2a_context_id_empty_string(self):
-    """Test context ID parsing with empty string."""
-    result = _from_a2a_context_id("")
-    assert result == (None, None, None)
-
-  def test_from_a2a_context_id_invalid_prefix(self):
-    """Test context ID parsing with invalid prefix."""
-    context_id = "INVALID/test-app/test-user/test-session"
-
-    result = _from_a2a_context_id(context_id)
-
-    assert result == (None, None, None)
-
-  def test_from_a2a_context_id_too_few_parts(self):
-    """Test context ID parsing with too few parts."""
-    context_id = f"{ADK_CONTEXT_ID_PREFIX}/test-app/test-user"
-
-    result = _from_a2a_context_id(context_id)
-
-    assert result == (None, None, None)
-
-  def test_from_a2a_context_id_too_many_parts(self):
-    """Test context ID parsing with too many parts."""
-    context_id = (
-        f"{ADK_CONTEXT_ID_PREFIX}/test-app/test-user/test-session/extra"
-    )
-
-    result = _from_a2a_context_id(context_id)
-
-    assert result == (None, None, None)
-
-  def test_from_a2a_context_id_empty_components(self):
-    """Test context ID parsing with empty components."""
-    context_id = f"{ADK_CONTEXT_ID_PREFIX}//test-user/test-session"
-
-    result = _from_a2a_context_id(context_id)
-
-    assert result == (None, None, None)
-
-  def test_from_a2a_context_id_no_dollar_separator(self):
-    """Test context ID parsing without dollar separators."""
-    context_id = f"{ADK_CONTEXT_ID_PREFIX}-test-app-test-user-test-session"
-
-    result = _from_a2a_context_id(context_id)
-
-    assert result == (None, None, None)
-
-  def test_roundtrip_context_id(self):
-    """Test roundtrip conversion: to -> from."""
-    app_name = "test-app"
-    user_id = "test-user"
-    session_id = "test-session"
-
-    # Convert to context ID
-    context_id = _to_a2a_context_id(app_name, user_id, session_id)
-
-    # Convert back
-    parsed_app, parsed_user, parsed_session = _from_a2a_context_id(context_id)
-
-    assert parsed_app == app_name
-    assert parsed_user == user_id
-    assert parsed_session == session_id
-
-  def test_from_a2a_context_id_special_characters(self):
-    """Test context ID parsing with special characters."""
-    context_id = f"{ADK_CONTEXT_ID_PREFIX}/test-app@2024/user_123/session-456"
-
-    app_name, user_id, session_id = _from_a2a_context_id(context_id)
-
-    assert app_name == "test-app@2024"
-    assert user_id == "user_123"
-    assert session_id == "session-456"