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58 lines
1.7 KiB
Python
58 lines
1.7 KiB
Python
# Copyright 2026 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from google.adk import Event
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from google.adk import Workflow
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def process_initial_input(ctx, node_input: str):
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"""Takes initial input and sets it in state via direct dict modification."""
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ctx.state["original_text"] = node_input
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return node_input
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def update_state_via_event(node_input: str):
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"""Returns an Event that implicitly updates the shared workflow state."""
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yield Event(state={"uppercased_text": node_input.upper()})
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def read_state_via_ctx(ctx):
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"""Reads a state variable via direct dictionary access and appends to it."""
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original = ctx.state["original_text"]
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uppercased = ctx.state["uppercased_text"]
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result = f"{uppercased} (Original was: {original})"
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ctx.state["appended_text"] = result
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return result
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def read_state_via_param(appended_text: str):
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"""Reads a state variable via automatic parameter injection."""
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return f"Final Result: {appended_text}!"
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root_agent = Workflow(
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name="state_sample",
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edges=[
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(
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"START",
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process_initial_input,
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update_state_via_event,
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read_state_via_ctx,
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read_state_via_param,
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),
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],
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)
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