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chore: import upstream snapshot with attribution
2026-07-13 13:25:13 +08:00

82 lines
2.3 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.
from google.adk import Agent
from google.adk import Context
from google.adk import Event
from google.adk import Workflow
from google.adk.events import RequestInput
from google.adk.workflow import node
def process_input(node_input: str):
"""Takes the initial customer complaint as input and sets it in the state."""
yield Event(state={"complaint": node_input, "feedback": ""})
draft_email = Agent(
name="draft_email",
instruction="""
Please write a polite, helpful response email to the following customer complaint: "{complaint}"
If there is any feedback from the manager to revise the draft, please incorporate it: "{feedback?}"
""",
output_key="draft",
)
@node(rerun_on_resume=True)
def human_review(draft: str, ctx: Context):
resume_input = ctx.resume_inputs.get("human_review")
if not resume_input:
yield RequestInput(
interrupt_id="human_review",
message=(
"Please review the following draft email and provide 'approve',"
f" 'reject', or feedback to revise.\n\n---\n{draft}\n---"
),
)
return
if resume_input == "reject":
yield Event(route="rejected")
elif resume_input == "approve":
yield Event(route="approved")
else:
yield Event(state={"feedback": resume_input}, route="revise")
def reject_email():
yield Event(message="Draft rejected.")
def send_email(draft: str):
yield Event(message="Draft approved and sent successfully.")
root_agent = Workflow(
name="request_input_rerun",
edges=[
("START", process_input, draft_email, human_review),
(
human_review,
{
"revise": draft_email,
"approved": send_email,
"rejected": reject_email,
},
),
],
)