Feat: Agent Engine Sandbox Code Executor#317
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kalenkevich
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May 11, 2026
| data: file.content, // Assumed to be already base64 encoded based on CodeExecutionInput definition | ||
| metadata: { | ||
| attributes: { | ||
| file_name: Buffer.from(file.name).toString('base64'), |
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why do we need to encode that to base64?
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The Vertex AI SDK expects Chunk objects for input which include base64 encoded data.
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May 11, 2026 15:35
…ions found in tests
- Update imports to use @google-cloud/vertexai root instead of deep paths. - Move regex patterns to file level as constants. - Remove explicit type cast in favor of type inference. - Change operational log levels from info to debug. - Add @experimental decorator to AgentEngineSandboxCodeExecutor. - Update test file to import from @google/adk instead of relative path.
… session state parity
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Link to Issue or Description of Change
If no issue exists, describe the change:
Ported
agent_engine_sandbox_code_executorfromadk-pythontoadk-jsto support executing code generated by agents in a secure sandbox environment using Vertex AI.Problem: Need to support executing code generated by agents in a secure sandbox environment using Vertex AI in the JS SDK, matching the feature available in the Python SDK.
Solution: Implemented
AgentEngineSandboxCodeExecutorin TypeScript, leveraging@google-cloud/vertexai's API for sandbox management and code execution. The implementation handles session state to reuse sandboxes when possible and falls back to creating new ones if needed or expired.Testing Plan
Please describe the tests that you ran to verify your changes. This is required for all PRs that are not small documentation or typo fixes.
Unit Tests:
Summary of passed tests:
core/test/code_executors/agent_engine_sandbox_code_executor_test.ts.agent_engine_sandbox_code_executor.ts(based on coverage report showing 100% for the file in thecode_executorsdirectory).Manual End-to-End (E2E) Tests:
tests/integration/agents/agent_with_sandbox_executor_test.tswhich verifies the integration of the executor with an LLM agent.Checklist
Additional context
This depends on the Agent Engine Session Service PR