Developer
Wei Sun
weisun@google.com
Performance
Key patterns and highlights from this developer's activity.
Breakdown of growth, maintenance, and fixes effort over time.
Bugs introduced vs. fixed over time.
Reclassifies engineering effort based on bug attribution. Commits that introduced bugs are retrospectively counted as poor investments.
Investment Quality reclassifies engineering effort based on bug attribution data. Commits identified as buggy origins (those that introduced bugs later fixed by someone) have their grow and maintenance time moved into the Wasted Time category. Their waste (fix commits) remains counted as productive. All other commits retain their standard classification: grow is productive, maintenance is maintenance, and waste (fixes) is productive.
The standard model classifies commits as Growth, Maintenance, or Fixes. Investment Quality adds a quality lens: a commit that introduced a bug is retrospectively counted as a poor investment — the engineering time spent on it was wasted because it ultimately required additional fix work. Fix commits (Fixes in the standard model) are reframed as productive, because fixing bugs is valuable work.
Currently computed client-side from commit and bug attribution data. Ideal server-side endpoint:
POST /v1/organizations/{orgId}/investment-quality
Content-Type: application/json
Request:
{
"startTime": "2025-01-01T00:00:00Z",
"endTime": "2025-12-31T23:59:59Z",
"bucketSize": "BUCKET_SIZE_MONTH",
"groupBy": ["repository_id" | "deliverer_email"]
}
Response:
{
"productivePct": 74,
"maintenancePct": 18,
"wastedPct": 8,
"buckets": [
{
"bucketStart": "2025-01-01T00:00:00Z",
"productive": 4.2,
"maintenance": 1.8,
"wasted": 0.6
}
]
}Latest analyzed commits from this developer.
| Hash | Message | Date | Files |
|---|
Commit activity distribution by hour and day of week. Shows when this developer is most active.
Developers who frequently work on the same files and symbols. Higher score means stronger code collaboration.
| Effort |
|---|
| abe4bbea | This commit performs a **maintenance merge** to synchronize the `main` branch with the recently released `v1.28.0`. It updates the **Python package version** in `src/google/adk/version.py` to `1.28.0`. Additionally, it adjusts the **release automation configuration** by updating `.github/.release-please-manifest.json` and `.github/release-please-config.json` to reflect the new version and last release SHA. This ensures the `main` branch is aligned with the latest official release and its associated tooling. | Mar 27 | 4 | maint |
| 2a90fbc1 | This commit performs a **maintenance merge** to synchronize the `main` branch with the recently released **`v1.27.4`**. It updates the project's internal version string in `src/google/adk/version.py` to `1.27.4` and adjusts the **release automation configuration** files, including `.github/.release-please-manifest.json` and `.github/release-please-config.json`. This ensures that the `main` branch accurately reflects the latest stable release, preparing it for subsequent development cycles and consistent versioning. | Mar 25 | 4 | maint |
| 4e5f6839 | This commit performs a **maintenance chore** by merging the `v1.27.2` release branch into `main`, synchronizing the project's version information. It updates the `__version__` string within the **`google.adk` Python module** in `src/google/adk/version.py` to `1.27.2`. Additionally, the `.github/.release-please-manifest.json` file is updated to reflect this new release. This ensures that the project's internal version tracking and the Python package's reported version are consistent with the official **v1.27.2 release**. | Mar 17 | 3 | maint |
| 9b3888b6 | This commit performs a **maintenance chore** by **merging the `release/v1.27.1` branch into `main`**, synchronizing the project's version information. It updates the **versioning system** of the `adk-python` library, specifically changing the `__version__` string in `src/google/adk/version.py` to `1.27.1`. Additionally, it updates the **release automation configuration** by modifying `.github/.release-please-manifest.json` to reflect the new version and updating the `last-release-sha` in `.github/release-please-config.json`. This ensures the `main` branch accurately reflects the **latest released version** and maintains consistency for future release processes. | Mar 13 | 4 | maint |
| abf88a94 | This commit performs a **maintenance chore** by **merging the `v1.27.0` release into the `main` branch**. It updates the **release automation configuration** within the `.github` directory, specifically `release-please-manifest.json` and `release-please-config.json`, to reflect the new version. Concurrently, the **Python package version** for the `google.adk` library is incremented to `1.27.0` in `src/google/adk/version.py`. This ensures the `main` branch is synchronized with the latest official release, preparing the repository for future development cycles. | Mar 12 | 4 | maint |
| 1206addd | This commit **merges the `v1.26.0` release** from the release branch back into `main`, performing essential **release synchronization**. It updates the **project's version number** to `1.26.0` within `src/google/adk/version.py` and adjusts the **release configuration files** such as `.github/.release-please-manifest.json` and `.github/release-please-config.json`. This **maintenance chore** ensures the `main` branch accurately reflects the latest official release, preparing it for subsequent development cycles and future releases. | Feb 27 | 4 | maint |
| 710d9de0 | This commit **refines the automated release process** to ensure release tags accurately reflect the commit SHA from the release branch. It introduces a `last-release-sha` mechanism in `.github/release-please-config.json` to correctly locate the previous release for **CHANGELOG generation**. This **maintenance chore** updates several **GitHub Actions workflows**, including `release-finalize.yml` and `release-please.yml`, to improve the robustness and accuracy of the **automated release pipeline** by explicitly referencing the `release/candidate` branch and recording the last main branch SHA. | Feb 18 | 6 | maint |
| dbd64207 | fix(deps): Increase pydantic lower version to 2.7.0 | Feb 17 | 1 | – |
| 38b4869c | This commit **migrates the project's release pipeline** from the `release-please` GitHub App to a new, comprehensive **GitHub Actions-based system**. It introduces a **candidate branch strategy** for releases, defining workflows for **cutting, finalizing, and publishing releases to PyPI**, alongside mechanisms for **cherry-picking fixes** to release candidates. This significant **CI/CD infrastructure update** streamlines the release management process, enhancing automation and control over versioning and deployment. | Feb 11 | 9 | maint |
| a2e43aaf | chore(version): Limits sphinx under 9 for docs | Feb 6 | 1 | – |
| 93a085ad | This commit performs a **maintenance chore** by updating the **ADK package version** from `1.24.0` to `1.24.1`. It specifically modifies the version string within `src/google/adk/version.py`. This change signifies a **patch release** for the ADK library, ensuring that the reported version accurately reflects the current state of the codebase. | Feb 5 | 2 | maint |
| fb941f90 | This commit performs a **maintenance chore** by **bumping the project version** for the `google.adk` library. It specifically updates the `__version__` string within `src/google/adk/version.py` from `1.23.0` to `1.24.0`. This change is part of the release process, signaling that a new stable version of the library is being prepared or has been released. | Feb 5 | 2 | maint |
| 645bd0ed | This commit **updates the AI model configuration** for two **example agents** within the `contributing/samples` directory. Specifically, the `root_agent` in both `contributing/samples/hello_world/agent.py` and `contributing/samples/session_state_agent/agent.py` is now configured to use `gemini-2.5-flash` instead of older `gemini-2.0-flash` variants. This **maintenance update** ensures that the provided **documentation samples** leverage the **latest Gemini Flash model**, offering improved performance and demonstrating current best practices for developers. The change primarily affects the **developer experience** by keeping the examples relevant and up-to-date with the newest model capabilities. | Jan 21 | 2 | maint |
| f7f6837f | This commit **updates the documentation** by adding new, comprehensive sections to the `AGENTS.md` file. It introduces valuable **Python tips** covering best practices, recommended libraries and tools, testing methodologies, and error handling strategies. This **documentation enhancement** aims to provide clearer guidance and assist developers in writing more effective and robust Python code, particularly for agent development. The changes improve the overall quality and utility of the existing developer resources. | Nov 15 | 1 | maint |
| 50ceda00 | This commit **updates the documentation** for the `generate_content_async` method within the **`BaseLlm`** module. It clarifies the **expected behavior** for both streaming and non-streaming responses, ensuring that the persisted session state for `LlmResponse` objects is identical regardless of the generation method. This **documentation update** provides crucial guidance for future implementations to align with the intended consistent handling of LLM outputs. The change specifically affects `src/google/adk/models/base_llm.py` by adding examples and detailed explanations to the `generate_content_async` docstring. | Nov 8 | 1 | maint |
| e511eb1f | This commit performs a **maintenance cleanup** by **removing an unrealistic `TODO` comment** related to **visibility management**. The comment, which likely outlined a future feature or improvement, was determined to be no longer relevant or feasible. This change primarily affects the **codebase documentation** and improves clarity by ensuring that `TODO` notes accurately reflect current development plans and priorities. | Nov 6 | 2 | – |
| 610e219a | This commit **fixes the location** of the `copybara-pr-handler.yml` configuration file, moving it to the correct `workflow` folder within the repository. This **maintenance fix** is crucial for the **CI/CD pipeline**, specifically ensuring the proper functioning of the **Copybara pull request handler**. By correcting the file path, the automated system for integrating external contributions will operate as intended, preventing potential build or integration failures. | Oct 30 | 2 | – |
| 9704d27d | This commit introduces a **new CI capability** by adding a **GitHub Actions workflow** to automatically close pull requests that have been imported and committed by Copybara. The new workflow, defined in `.github/copybara-pr-handler.yml`, is triggered when a Copybara-pushed commit's description matches the pattern `Merge https://github.com/.../pull/NNNN`. This **maintenance automation** streamlines the development process by ensuring that PRs already integrated via Copybara are promptly closed, preventing stale entries. A temporary manual mode is included for initial testing and will be removed once verified. | Oct 30 | 1 | maint |
| d45b31fb | This commit **updates the project's `.gitignore` file** as a **maintenance chore** to prevent accidental inclusion of developer-specific AI coding assistant configurations. It adds ignore patterns for **ten popular AI coding tools**, including directories like `.claude/`, `.cursor/`, and `.codeium/`, and files such as `CLAUDE.md` and `.cursorrules`. This change ensures that **personal AI tool settings remain local**, preventing accidental commits of sensitive or irrelevant configurations and keeping the repository clean, consistent with the `AGENTS.md` approach. | Oct 29 | 1 | maint |
| 2216fe7c | This commit **updates the `AGENTS.md` documentation** to provide **generalized development guidelines** applicable to **all AI coding tools**. The **documentation enhancement** expands the content to include comprehensive sections on project architecture, development setup, testing procedures, and style guides. This **maintenance** effort aims to offer a **unified and more robust resource** for developers, improving consistency and clarity across various AI coding assistant projects by making the guide broadly applicable. | Oct 29 | 1 | maint |
This commit performs a **maintenance merge** to synchronize the `main` branch with the recently released `v1.28.0`. It updates the **Python package version** in `src/google/adk/version.py` to `1.28.0`. Additionally, it adjusts the **release automation configuration** by updating `.github/.release-please-manifest.json` and `.github/release-please-config.json` to reflect the new version and last release SHA. This ensures the `main` branch is aligned with the latest official release and its associated tooling.
This commit performs a **maintenance merge** to synchronize the `main` branch with the recently released **`v1.27.4`**. It updates the project's internal version string in `src/google/adk/version.py` to `1.27.4` and adjusts the **release automation configuration** files, including `.github/.release-please-manifest.json` and `.github/release-please-config.json`. This ensures that the `main` branch accurately reflects the latest stable release, preparing it for subsequent development cycles and consistent versioning.
This commit performs a **maintenance chore** by merging the `v1.27.2` release branch into `main`, synchronizing the project's version information. It updates the `__version__` string within the **`google.adk` Python module** in `src/google/adk/version.py` to `1.27.2`. Additionally, the `.github/.release-please-manifest.json` file is updated to reflect this new release. This ensures that the project's internal version tracking and the Python package's reported version are consistent with the official **v1.27.2 release**.
This commit performs a **maintenance chore** by **merging the `release/v1.27.1` branch into `main`**, synchronizing the project's version information. It updates the **versioning system** of the `adk-python` library, specifically changing the `__version__` string in `src/google/adk/version.py` to `1.27.1`. Additionally, it updates the **release automation configuration** by modifying `.github/.release-please-manifest.json` to reflect the new version and updating the `last-release-sha` in `.github/release-please-config.json`. This ensures the `main` branch accurately reflects the **latest released version** and maintains consistency for future release processes.
This commit performs a **maintenance chore** by **merging the `v1.27.0` release into the `main` branch**. It updates the **release automation configuration** within the `.github` directory, specifically `release-please-manifest.json` and `release-please-config.json`, to reflect the new version. Concurrently, the **Python package version** for the `google.adk` library is incremented to `1.27.0` in `src/google/adk/version.py`. This ensures the `main` branch is synchronized with the latest official release, preparing the repository for future development cycles.
This commit **merges the `v1.26.0` release** from the release branch back into `main`, performing essential **release synchronization**. It updates the **project's version number** to `1.26.0` within `src/google/adk/version.py` and adjusts the **release configuration files** such as `.github/.release-please-manifest.json` and `.github/release-please-config.json`. This **maintenance chore** ensures the `main` branch accurately reflects the latest official release, preparing it for subsequent development cycles and future releases.
This commit **refines the automated release process** to ensure release tags accurately reflect the commit SHA from the release branch. It introduces a `last-release-sha` mechanism in `.github/release-please-config.json` to correctly locate the previous release for **CHANGELOG generation**. This **maintenance chore** updates several **GitHub Actions workflows**, including `release-finalize.yml` and `release-please.yml`, to improve the robustness and accuracy of the **automated release pipeline** by explicitly referencing the `release/candidate` branch and recording the last main branch SHA.
fix(deps): Increase pydantic lower version to 2.7.0
This commit **migrates the project's release pipeline** from the `release-please` GitHub App to a new, comprehensive **GitHub Actions-based system**. It introduces a **candidate branch strategy** for releases, defining workflows for **cutting, finalizing, and publishing releases to PyPI**, alongside mechanisms for **cherry-picking fixes** to release candidates. This significant **CI/CD infrastructure update** streamlines the release management process, enhancing automation and control over versioning and deployment.
chore(version): Limits sphinx under 9 for docs
This commit performs a **maintenance chore** by updating the **ADK package version** from `1.24.0` to `1.24.1`. It specifically modifies the version string within `src/google/adk/version.py`. This change signifies a **patch release** for the ADK library, ensuring that the reported version accurately reflects the current state of the codebase.
This commit performs a **maintenance chore** by **bumping the project version** for the `google.adk` library. It specifically updates the `__version__` string within `src/google/adk/version.py` from `1.23.0` to `1.24.0`. This change is part of the release process, signaling that a new stable version of the library is being prepared or has been released.
This commit **updates the AI model configuration** for two **example agents** within the `contributing/samples` directory. Specifically, the `root_agent` in both `contributing/samples/hello_world/agent.py` and `contributing/samples/session_state_agent/agent.py` is now configured to use `gemini-2.5-flash` instead of older `gemini-2.0-flash` variants. This **maintenance update** ensures that the provided **documentation samples** leverage the **latest Gemini Flash model**, offering improved performance and demonstrating current best practices for developers. The change primarily affects the **developer experience** by keeping the examples relevant and up-to-date with the newest model capabilities.
This commit **updates the documentation** by adding new, comprehensive sections to the `AGENTS.md` file. It introduces valuable **Python tips** covering best practices, recommended libraries and tools, testing methodologies, and error handling strategies. This **documentation enhancement** aims to provide clearer guidance and assist developers in writing more effective and robust Python code, particularly for agent development. The changes improve the overall quality and utility of the existing developer resources.
This commit **updates the documentation** for the `generate_content_async` method within the **`BaseLlm`** module. It clarifies the **expected behavior** for both streaming and non-streaming responses, ensuring that the persisted session state for `LlmResponse` objects is identical regardless of the generation method. This **documentation update** provides crucial guidance for future implementations to align with the intended consistent handling of LLM outputs. The change specifically affects `src/google/adk/models/base_llm.py` by adding examples and detailed explanations to the `generate_content_async` docstring.
This commit performs a **maintenance cleanup** by **removing an unrealistic `TODO` comment** related to **visibility management**. The comment, which likely outlined a future feature or improvement, was determined to be no longer relevant or feasible. This change primarily affects the **codebase documentation** and improves clarity by ensuring that `TODO` notes accurately reflect current development plans and priorities.
This commit **fixes the location** of the `copybara-pr-handler.yml` configuration file, moving it to the correct `workflow` folder within the repository. This **maintenance fix** is crucial for the **CI/CD pipeline**, specifically ensuring the proper functioning of the **Copybara pull request handler**. By correcting the file path, the automated system for integrating external contributions will operate as intended, preventing potential build or integration failures.
This commit introduces a **new CI capability** by adding a **GitHub Actions workflow** to automatically close pull requests that have been imported and committed by Copybara. The new workflow, defined in `.github/copybara-pr-handler.yml`, is triggered when a Copybara-pushed commit's description matches the pattern `Merge https://github.com/.../pull/NNNN`. This **maintenance automation** streamlines the development process by ensuring that PRs already integrated via Copybara are promptly closed, preventing stale entries. A temporary manual mode is included for initial testing and will be removed once verified.
This commit **updates the project's `.gitignore` file** as a **maintenance chore** to prevent accidental inclusion of developer-specific AI coding assistant configurations. It adds ignore patterns for **ten popular AI coding tools**, including directories like `.claude/`, `.cursor/`, and `.codeium/`, and files such as `CLAUDE.md` and `.cursorrules`. This change ensures that **personal AI tool settings remain local**, preventing accidental commits of sensitive or irrelevant configurations and keeping the repository clean, consistent with the `AGENTS.md` approach.
This commit **updates the `AGENTS.md` documentation** to provide **generalized development guidelines** applicable to **all AI coding tools**. The **documentation enhancement** expands the content to include comprehensive sections on project architecture, development setup, testing procedures, and style guides. This **maintenance** effort aims to offer a **unified and more robust resource** for developers, improving consistency and clarity across various AI coding assistant projects by making the guide broadly applicable.