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Wei (Jack) Sun 1c64a41b53 feat: ADK 2.0 alpha
Introduces two major capabilities:
- Workflow runtime: graph-based execution engine for composing
  deterministic execution flows for agentic apps, with support for
  routing, fan-out/fan-in, loops, retry, state management, dynamic
  nodes, human-in-the-loop, and nested workflows
- Task API: structured agent-to-agent delegation with multi-turn
  task mode, single-turn controlled output, mixed delegation
  patterns, human-in-the-loop, and task agents as workflow nodes

Co-Authored-By: Bo Yang <ybo@google.com>
Co-Authored-By: George Weale <gweale@google.com>
Co-Authored-By: Sean Zhou <seanzhougoogle@google.com>
Co-Authored-By: Shangjie Chen <deanchen@google.com>
Co-Authored-By: Swapnil Agarwal <swapnilag@google.com>
Co-Authored-By: Wei Sun <weisun@google.com>
Co-Authored-By: Xuan Yang <xygoogle@google.com>
Co-Authored-By: Yifan Wang <wanyif@google.com>
Change-Id: I35932c50cfe29ff68559e3781713dbb5eb7b3382
2026-03-17 23:24:58 -07:00

46 lines
1.3 KiB
Python

# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import random
from google.adk import Event
from google.adk import Workflow
def validate_input(node_input: str):
parsed_number = int(node_input)
if parsed_number > 10 or parsed_number < 0:
yield Event(message='Please provide a number between 0 and 10.')
raise ValueError('Invalid input.')
else:
yield Event(state={'target_number': parsed_number})
def guess_number(target_number: int):
guess = random.randint(0, 10)
yield Event(message=f'Guessing {guess}...')
if guess == target_number:
yield Event(message='Correct!')
else:
yield Event(route='guessed_wrong')
root_agent = Workflow(
name='root_agent',
edges=[
('START', validate_input, guess_number),
(guess_number, {'guessed_wrong': guess_number}),
],
)