canonical/snapd
Nov 2024 – Oct 2025
10 Months active
Languages Used
GoShellCYAMLshyamlTypeScript
Technical Skills
Bug FixCI/CDCode MaintenanceError HandlingGoGo Development
Andrew Phelps
PROFILE
Andrew Phelps
Andrew Phelps developed robust backend and security features for the canonical/snapd repository, focusing on distributed cluster management, device identity, and system reliability. He engineered cluster orchestration frameworks and secure transport abstractions, integrating cryptographic device verification and automated state application to devices. Using Go and C, Andrew modernized codebases, improved dependency management, and enhanced test infrastructure for ARM64 and embedded systems. His work included implementing OPTEE-based full disk encryption, refining assertion handling, and strengthening CI/CD pipelines. These contributions addressed complex concurrency, security, and deployment challenges, resulting in scalable, maintainable code that improved update reliability and streamlined large-scale device operations.
Overall Statistics
Feature vs Bugs
65%Features
Repository Contributions
57Total
Bugs
11
Commits
57
Features
20
Lines of code
36,427
Activity Months10
Your Network
426 people
Work History
October 2025
13 Commits • 3 Features
Oct 1, 2025October 2025: Delivered security-focused device identity and cluster state application for canonical/snapd, strengthened cluster configuration validation, and improved maintenance/testing workflows. Implemented cryptographic device identity verification, serial assertions, and automated application of cluster state to devices; exposed serial assertion data in devicestate and added a function to apply cluster assertion state. Enhanced config safety with unique subcluster names and device ID bounds. Maintenance and testing improvements include in-flight validation sets for snapctl install, Go-version commentary updates, and targeted cleanup. These changes improve deployment reliability, enforce verified device-state, and reduce configuration risk across clusters.
13 Commits • 3 Features
Oct 1, 2025October 2025: Delivered security-focused device identity and cluster state application for canonical/snapd, strengthened cluster configuration validation, and improved maintenance/testing workflows. Implemented cryptographic device identity verification, serial assertions, and automated application of cluster state to devices; exposed serial assertion data in devicestate and added a function to apply cluster assertion state. Enhanced config safety with unique subcluster names and device ID bounds. Maintenance and testing improvements include in-flight validation sets for snapctl install, Go-version commentary updates, and targeted cleanup. These changes improve deployment reliability, enforce verified device-state, and reduce configuration risk across clusters.
October 2025
September 2025
7 Commits • 3 Features
Sep 1, 2025September 2025 (canonical/snapd): Delivered a more secure, testable cluster assembly workflow with a transport abstraction and HTTPS integration, expanded cryptographic capabilities with direct signing/verification interfaces, and automated lifecycle features that enable automatic completion when a target device count is reached. Key back-end improvements to data management include exposing advanced backstore handling (RODatabase WithStackedBackstore) and an explicit expected-size concept to prevent stalls. These changes improved security, testability, deployment reliability, and operator feedback for large-scale device assemblies.
September 2025
7 Commits • 3 Features
Sep 1, 2025September 2025 (canonical/snapd): Delivered a more secure, testable cluster assembly workflow with a transport abstraction and HTTPS integration, expanded cryptographic capabilities with direct signing/verification interfaces, and automated lifecycle features that enable automatic completion when a target device count is reached. Key back-end improvements to data management include exposing advanced backstore handling (RODatabase WithStackedBackstore) and an explicit expected-size concept to prevent stalls. These changes improved security, testability, deployment reliability, and operator feedback for large-scale device assemblies.
August 2025
5 Commits • 2 Features
Aug 1, 2025Monthly summary for 2025-08: Delivered security enhancements and foundation for scalable cluster management in canonical/snapd, while stabilizing the test environment. Key outcomes include OPTEE-based Full Disk Encryption (FDE) support, a new AssembleState-based framework for distributed cluster assembly with discovery and device tracking, and a test environment reliability fix that removes reliance on sudo -E.
5 Commits • 2 Features
Aug 1, 2025Monthly summary for 2025-08: Delivered security enhancements and foundation for scalable cluster management in canonical/snapd, while stabilizing the test environment. Key outcomes include OPTEE-based Full Disk Encryption (FDE) support, a new AssembleState-based framework for distributed cluster assembly with discovery and device tracking, and a test environment reliability fix that removes reliance on sudo -E.
August 2025
July 2025
9 Commits • 4 Features
Jul 1, 2025Concise monthly summary for 2025-07 focusing on reliability, CI stability, and scalable architecture for canonical/snapd. Delivered targeted bug fix for device remodeling UC18, expanded test infrastructure to bypass AppArmor constraints, and strengthened seeding and initialization flows. Introduced API safety guards for Full Disk Encryption and a KeyProtectorFactory abstraction to prepare for OPTEE changes. Implemented RouteSelector for publication routing to optimize cluster assembly. These efforts reduced upgrade risk, improved testing fidelity, and laid groundwork for secure, scalable deployments.
July 2025
9 Commits • 4 Features
Jul 1, 2025Concise monthly summary for 2025-07 focusing on reliability, CI stability, and scalable architecture for canonical/snapd. Delivered targeted bug fix for device remodeling UC18, expanded test infrastructure to bypass AppArmor constraints, and strengthened seeding and initialization flows. Introduced API safety guards for Full Disk Encryption and a KeyProtectorFactory abstraction to prepare for OPTEE changes. Implemented RouteSelector for publication routing to optimize cluster assembly. These efforts reduced upgrade risk, improved testing fidelity, and laid groundwork for secure, scalable deployments.
June 2025
6 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for canonical/snapd: Focused on delivering business-value features, tightening reliability, and improving development/testing efficiency. Highlights include enhanced CLI usability for multi-component operations, accurate install feedback, offline prereq tracking for channel switches, build stability under nooptee, and streamlined tests/CI for ARM64 and network-independent verification.
6 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for canonical/snapd: Focused on delivering business-value features, tightening reliability, and improving development/testing efficiency. Highlights include enhanced CLI usability for multi-component operations, accurate install feedback, offline prereq tracking for channel switches, build stability under nooptee, and streamlined tests/CI for ARM64 and network-independent verification.
June 2025
May 2025
5 Commits • 1 Features
May 1, 2025May 2025 monthly summary for canonical/snapd focusing on delivering stability improvements, cross-arch security features, and build-time reliability. The work during the month enhanced test reliability, expanded hardware security capabilities, and hardened prerequisites workflows, aligning with business goals of reducing time-to-ship, lowering flaky test rates, and broadening platform support.
May 2025
5 Commits • 1 Features
May 1, 2025May 2025 monthly summary for canonical/snapd focusing on delivering stability improvements, cross-arch security features, and build-time reliability. The work during the month enhanced test reliability, expanded hardware security capabilities, and hardened prerequisites workflows, aligning with business goals of reducing time-to-ship, lowering flaky test rates, and broadening platform support.
April 2025
4 Commits • 2 Features
Apr 1, 2025April 2025 for canonical/snapd focused on modernizing Go codebase practices and strengthening dependency resolution to reduce maintenance overhead and improve reliability of snap updates. Delivered two primary features with measurable impact: Go code modernization aligned with modernize tooling, and robust dependency resolution that prevents update deadlocks by detecting circular dependencies and enforcing prerequisite updates. Also fixed a validation-wait bug to ensure updates proceed in the correct order, reducing system stalls in production workflows.
4 Commits • 2 Features
Apr 1, 2025April 2025 for canonical/snapd focused on modernizing Go codebase practices and strengthening dependency resolution to reduce maintenance overhead and improve reliability of snap updates. Delivered two primary features with measurable impact: Go code modernization aligned with modernize tooling, and robust dependency resolution that prevents update deadlocks by detecting circular dependencies and enforcing prerequisite updates. Also fixed a validation-wait bug to ensure updates proceed in the correct order, reducing system stalls in production workflows.
April 2025
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025: Delivered reliability improvements and edge-tracking features for canonical/snapd, focused on sequencing and reboot-aware task wiring, plus test updates to solidify relationships between downloads and edge states. Key changes include: 1) Snap Task Lifecycle Reliability During Remodel - ensure snap link tasks are not marked complete until reboot finishes; synchronize MaybeRebootEdge with AddLinkNewBaseOrKernel and LinkNewBaseOrKernel to align with system reboots during remodel. 2) Snap Download Task Edge Tracking (SnapSetupEdge) - propagate SnapSetupEdge to snap setup task creation in Download and DownloadComponents; updated tests to verify edge association with the download snap task.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025: Delivered reliability improvements and edge-tracking features for canonical/snapd, focused on sequencing and reboot-aware task wiring, plus test updates to solidify relationships between downloads and edge states. Key changes include: 1) Snap Task Lifecycle Reliability During Remodel - ensure snap link tasks are not marked complete until reboot finishes; synchronize MaybeRebootEdge with AddLinkNewBaseOrKernel and LinkNewBaseOrKernel to align with system reboots during remodel. 2) Snap Download Task Edge Tracking (SnapSetupEdge) - propagate SnapSetupEdge to snap setup task creation in Download and DownloadComponents; updated tests to verify edge association with the download snap task.
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for canonical/snapd: Focused on enhancing snap management reliability during remodels and multi-revision scenarios. Delivered revision-aware fake store support and component remodel handling, with improved error handling and testability. These changes reduce risk in store operations, enable safer upgrade/downgrade cycles, and lay groundwork for more robust component lifecycle management in real-store flows.
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for canonical/snapd: Focused on enhancing snap management reliability during remodels and multi-revision scenarios. Delivered revision-aware fake store support and component remodel handling, with improved error handling and testability. These changes reduce risk in store operations, enable safer upgrade/downgrade cycles, and lay groundwork for more robust component lifecycle management in real-store flows.
December 2024
November 2024
4 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for canonical/snapd. Focused on stabilizing the test suite around reboot-related kernel changes and tightening code quality in the asserts packages. These efforts reduce test flakiness, accelerate iteration on reboot-related updates, and improve the clarity of constraint-related error messages, contributing to more reliable releases and easier maintenance.
November 2024
4 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for canonical/snapd. Focused on stabilizing the test suite around reboot-related kernel changes and tightening code quality in the asserts packages. These efforts reduce test flakiness, accelerate iteration on reboot-related updates, and improve the clarity of constraint-related error messages, contributing to more reliable releases and easier maintenance.
Activity
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Quality Metrics
Correctness91.6%
Maintainability88.6%
Architecture87.6%
Performance81.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
CGoShellTypeScriptYAMLshyaml
Technical Skills
API DesignAPI DevelopmentAbstractionAssertion HandlingAssertion ManagementBackend DevelopmentBug FixBuild SystemsC ProgrammingCI/CDChannel ProgrammingCode DocumentationCode MaintenanceCode ModernizationCode Refactoring
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline