canonical/lxd
Mar 2025 – Jun 2026
16 Months active
Languages Used
GoSQLYAMLBashShelljqMarkdownText
Technical Skills
API DevelopmentAPI DocumentationAPI SpecificationBackend DevelopmentCode LintingCode Quality
Mark Laing
PROFILE
Mark Laing
Over a 16-month period, contributed to the canonical/lxd repository by building and evolving core authentication, authorization, and multi-tenant management features. Focused on robust API development and backend systems, the work included OIDC integration, bearer token flows, and scalable identity management, all implemented in Go with supporting Bash and SQL for automation and database operations. Delivered improvements in cluster reliability, operation metadata traceability, and storage API flexibility, while refactoring for maintainability and performance. Enhanced security and observability through context propagation, test automation, and code quality initiatives, resulting in a more resilient, auditable, and developer-friendly platform for container and cloud infrastructure.
Overall Statistics
Feature vs Bugs
66%Features
Repository Contributions
1,028Total
Bugs
147
Commits
1,028
Features
284
Lines of code
186,289
Activity Months16
Your Network
483 peopleSame Organization
@canonical.com412
Work History
June 2026
8 Commits • 4 Features
Jun 1, 2026June 2026 monthly summary for canonical/lxd focused on delivering authentication resilience, API flexibility, UX improvements, and maintainability enhancements. The month emphasized reliable business value through robust OIDC integration, expanded storage capabilities, and cleaner CLI presentation.
8 Commits • 4 Features
Jun 1, 2026June 2026 monthly summary for canonical/lxd focused on delivering authentication resilience, API flexibility, UX improvements, and maintainability enhancements. The month emphasized reliable business value through robust OIDC integration, expanded storage capabilities, and cleaner CLI presentation.
June 2026
May 2026
90 Commits • 29 Features
May 1, 2026May 2026: Delivered key architectural and reliability improvements in LXD, with concrete business value in safer schema evolution, improved API reliability, and stronger security posture. Highlights include: Key features delivered: - Cluster Trigger Management and Schema Update: centralized trigger handling, refactored applyTriggers to a triggerFunc type, added global triggers, removed identities certificates trigger from main schema, triggers for update-schema, and tests for TLS identity certificate removal. - API URL Handling: Project/Target Functions: fixed API URL construction to prevent invalid multi-project URL scenarios, removed redundant project/target parameters when default values are used, and added tests. - Operations: Correct Project Parameter in Auto-Created URLs: ensured the project parameter is overwritten correctly for auto-created operation entity URLs. - DB schema tooling and key management: introduced update-schema tooling to refresh schema, and enhanced dbgen primary key handling (no hardcoded id, supports composite keys, explicit primary key tags, default id when unspecified). - OIDC device client ID and verifier integration: added device client ID support, wired into OIDC config and verifier, and introduced tests to validate device-id behavior. Major bugs fixed: - API URL handling bug: prevented more than one project or target query parameter in a single LXD API URL and validated parameter cleanup. - Auto-created operation URL project parameter: corrected project scoping for operation URLs. - Websocket disconnect and context cancellation: fixed disconnect behavior and proper cancellation to improve reliability. Overall impact and accomplishments: - Reduced API surface risk and improved reliability for multi-tenant usage, safer schema evolution, and stronger identity/security posture. Enabled more predictable behavior during deployment and maintenance, while expanding configurability and performance through DB and API improvements. Technologies/skills demonstrated: - Go code refactoring and type system (triggerFunc, atomic verifier usage), - DB tooling and schema generation (update-schema, dbgen), - API design and testing (URL parameter handling and tests), - Security engineering (OIDC device ID integration, verifier updates), and - Testing discipline (new tests for TLS removal, OIDC flows, and config stores).
May 2026
90 Commits • 29 Features
May 1, 2026May 2026: Delivered key architectural and reliability improvements in LXD, with concrete business value in safer schema evolution, improved API reliability, and stronger security posture. Highlights include: Key features delivered: - Cluster Trigger Management and Schema Update: centralized trigger handling, refactored applyTriggers to a triggerFunc type, added global triggers, removed identities certificates trigger from main schema, triggers for update-schema, and tests for TLS identity certificate removal. - API URL Handling: Project/Target Functions: fixed API URL construction to prevent invalid multi-project URL scenarios, removed redundant project/target parameters when default values are used, and added tests. - Operations: Correct Project Parameter in Auto-Created URLs: ensured the project parameter is overwritten correctly for auto-created operation entity URLs. - DB schema tooling and key management: introduced update-schema tooling to refresh schema, and enhanced dbgen primary key handling (no hardcoded id, supports composite keys, explicit primary key tags, default id when unspecified). - OIDC device client ID and verifier integration: added device client ID support, wired into OIDC config and verifier, and introduced tests to validate device-id behavior. Major bugs fixed: - API URL handling bug: prevented more than one project or target query parameter in a single LXD API URL and validated parameter cleanup. - Auto-created operation URL project parameter: corrected project scoping for operation URLs. - Websocket disconnect and context cancellation: fixed disconnect behavior and proper cancellation to improve reliability. Overall impact and accomplishments: - Reduced API surface risk and improved reliability for multi-tenant usage, safer schema evolution, and stronger identity/security posture. Enabled more predictable behavior during deployment and maintenance, while expanding configurability and performance through DB and API improvements. Technologies/skills demonstrated: - Go code refactoring and type system (triggerFunc, atomic verifier usage), - DB tooling and schema generation (update-schema, dbgen), - API design and testing (URL parameter handling and tests), - Security engineering (OIDC device ID integration, verifier updates), and - Testing discipline (new tests for TLS removal, OIDC flows, and config stores).
April 2026
133 Commits • 29 Features
Apr 1, 2026April 2026 (2026-04) delivered focused performance, reliability, and observability improvements for Canonical/LXD. The work emphasized identity cache efficiency, robust error handling, metadata-driven operation routing, and unified progress reporting across storage and image workflows. Context propagation and lifecycle correctness across core components were strengthened, while cleanup efforts reduced maintenance overhead and tightened code quality.
133 Commits • 29 Features
Apr 1, 2026April 2026 (2026-04) delivered focused performance, reliability, and observability improvements for Canonical/LXD. The work emphasized identity cache efficiency, robust error handling, metadata-driven operation routing, and unified progress reporting across storage and image workflows. Context propagation and lifecycle correctness across core components were strengthened, while cleanup efforts reduced maintenance overhead and tightened code quality.
April 2026
March 2026
71 Commits • 14 Features
Mar 1, 2026March 2026 highlights for the canonical/lxd repo: core backend refactorings, scalable data model updates, and new features that improve reliability, performance, and maintainability across identities, operations, and certificates.
March 2026
71 Commits • 14 Features
Mar 1, 2026March 2026 highlights for the canonical/lxd repo: core backend refactorings, scalable data model updates, and new features that improve reliability, performance, and maintainability across identities, operations, and certificates.
February 2026
96 Commits • 39 Features
Feb 1, 2026February 2026 (2026-02) monthly summary for canonical/lxd. Focused on metadata traceability, operation typing, and stable operation lifecycles. Delivered extensions and metadata improvements, standardized metadata types across components, and strengthened observability and context-safety for cleanup actions. The work improves auditing, debugging, and cross-component consistency, while enabling safer automation at scale.
96 Commits • 39 Features
Feb 1, 2026February 2026 (2026-02) monthly summary for canonical/lxd. Focused on metadata traceability, operation typing, and stable operation lifecycles. Delivered extensions and metadata improvements, standardized metadata types across components, and strengthened observability and context-safety for cleanup actions. The work improves auditing, debugging, and cross-component consistency, while enabling safer automation at scale.
February 2026
January 2026
61 Commits • 14 Features
Jan 1, 2026January 2026: Significant authentication, identity management, and RunCommand modernization across canonical/lxd. Removed identity cache across Requestor and drivers, replaced with Daemon-assisted, callback-based authz; introduced requestor authz hooks and Daemon integration; overhauled authentication flow and removed OIDC handler; consolidated identity handling in DevLXD; enhanced certificate retrieval; performed comprehensive RunCommand/TryRunCommand modernization with context propagation and safe background execution. Also updated tests and network context propagation to improve reliability and scalability across the stack.
January 2026
61 Commits • 14 Features
Jan 1, 2026January 2026: Significant authentication, identity management, and RunCommand modernization across canonical/lxd. Removed identity cache across Requestor and drivers, replaced with Daemon-assisted, callback-based authz; introduced requestor authz hooks and Daemon integration; overhauled authentication flow and removed OIDC handler; consolidated identity handling in DevLXD; enhanced certificate retrieval; performed comprehensive RunCommand/TryRunCommand modernization with context propagation and safe background execution. Also updated tests and network context propagation to improve reliability and scalability across the stack.
December 2025
35 Commits • 9 Features
Dec 1, 2025December 2025 delivered a major feature for project-scoped deployments and strengthened the reliability and responsiveness of LXD through a series of concurrency, API, and cancellation improvements. The work spans feature delivery, bug fixes, and foundational platform changes that enable better multi-tenant isolation, predictable operations, and smoother developer workflows.
35 Commits • 9 Features
Dec 1, 2025December 2025 delivered a major feature for project-scoped deployments and strengthened the reliability and responsiveness of LXD through a series of concurrency, API, and cancellation improvements. The work spans feature delivery, bug fixes, and foundational platform changes that enable better multi-tenant isolation, predictable operations, and smoother developer workflows.
December 2025
November 2025
11 Commits • 3 Features
Nov 1, 2025Month: 2025-11 — Monthly work summary for canonical/lxd focusing on delivering high-value features, stabilizing core security/auth flows, and improving maintainability. The work emphasizes business value through secure identity management, robust network policy handling, and clear documentation/testing practices.
November 2025
11 Commits • 3 Features
Nov 1, 2025Month: 2025-11 — Monthly work summary for canonical/lxd focusing on delivering high-value features, stabilizing core security/auth flows, and improving maintainability. The work emphasizes business value through secure identity management, robust network policy handling, and clear documentation/testing practices.
October 2025
25 Commits • 4 Features
Oct 1, 2025Month: 2025-10 — Summary for canonical/lxd: Delivered targeted API enhancements and reliability improvements with clear business value. Key features include Identity Provider Groups API enhancements (new IdentityProviderGroupsPost type and updates to request payloads and client/auth usage) and a robust access path for listing images via an access handler that supports public images in the default project. Documentation was aligned with API changes by refreshing the REST API Swagger YAML.
25 Commits • 4 Features
Oct 1, 2025Month: 2025-10 — Summary for canonical/lxd: Delivered targeted API enhancements and reliability improvements with clear business value. Key features include Identity Provider Groups API enhancements (new IdentityProviderGroupsPost type and updates to request payloads and client/auth usage) and a robust access path for listing images via an access handler that supports public images in the default project. Documentation was aligned with API changes by refreshing the REST API Swagger YAML.
October 2025
September 2025
158 Commits • 48 Features
Sep 1, 2025September 2025 (canonical/lxd): Delivered a focused set of security, reliability, and developer experience improvements across authentication, authorization, and OIDC capabilities, with a strong emphasis on business value, maintainability, and observability. Key features delivered: - OIDC Sessions API and backend support: API extension, oidc_sessions table, session handler interface and implementation, and client-side/session tooling (CLI, tests). - OIDC authentication flow enhancements: end sessions on logout, /userinfo-based token verification, cookiejar enforcement for bearer tokens, and updated Auth logic to align with new session handling. - Security and entitlement modernization: added GetViewableProjects API, groundwork for TLS/OpenFGA authorization, renamed entitlements and related guards, server-level can_view_operations, and improved event filtering and access checks. - Identity and protocol refinements: DevLXD protocol handling and identity naming improvements; identity parsing refactor and permissions shorthand resolution; mapping for auth methods; constants for trusted/untrusted API states. - Reliability and maintainability improvements: removed hard timeout in fine-grained auth checks; enriched OpenFGA error logging; improved event subsystem initialization and logging; test suites updated to reflect new permissions and behaviors; code quality refactor to constants and split identity parsing. Major bugs fixed: - Fixed typos and robustness in cluster signing keys management and permissions handling; improved error messages for permissions parsing; ensured pending identities are not cached; resolved cookie handling regressions and related remote helpers reverts to restore previous behavior. Overall impact and accomplishments: - Strengthened security posture with modernized auth flows, robust session management, and consistent entitlement handling; improved performance and determinism in auth checks under load; enhanced observability through better logging and event filtering; and improved maintainability with targeted refactors and comprehensive test updates. Technologies/skills demonstrated: - OIDC and bearer token flows, OpenID Connect userinfo, session management, TLS-based auth, OpenFGA integration groundwork, API design, internal requestor patterns, test automation, and codebase modernization (constants, refactors, and YAML/docs).
September 2025
158 Commits • 48 Features
Sep 1, 2025September 2025 (canonical/lxd): Delivered a focused set of security, reliability, and developer experience improvements across authentication, authorization, and OIDC capabilities, with a strong emphasis on business value, maintainability, and observability. Key features delivered: - OIDC Sessions API and backend support: API extension, oidc_sessions table, session handler interface and implementation, and client-side/session tooling (CLI, tests). - OIDC authentication flow enhancements: end sessions on logout, /userinfo-based token verification, cookiejar enforcement for bearer tokens, and updated Auth logic to align with new session handling. - Security and entitlement modernization: added GetViewableProjects API, groundwork for TLS/OpenFGA authorization, renamed entitlements and related guards, server-level can_view_operations, and improved event filtering and access checks. - Identity and protocol refinements: DevLXD protocol handling and identity naming improvements; identity parsing refactor and permissions shorthand resolution; mapping for auth methods; constants for trusted/untrusted API states. - Reliability and maintainability improvements: removed hard timeout in fine-grained auth checks; enriched OpenFGA error logging; improved event subsystem initialization and logging; test suites updated to reflect new permissions and behaviors; code quality refactor to constants and split identity parsing. Major bugs fixed: - Fixed typos and robustness in cluster signing keys management and permissions handling; improved error messages for permissions parsing; ensured pending identities are not cached; resolved cookie handling regressions and related remote helpers reverts to restore previous behavior. Overall impact and accomplishments: - Strengthened security posture with modernized auth flows, robust session management, and consistent entitlement handling; improved performance and determinism in auth checks under load; enhanced observability through better logging and event filtering; and improved maintainability with targeted refactors and comprehensive test updates. Technologies/skills demonstrated: - OIDC and bearer token flows, OpenID Connect userinfo, session management, TLS-based auth, OpenFGA integration groundwork, API design, internal requestor patterns, test automation, and codebase modernization (constants, refactors, and YAML/docs).
August 2025
151 Commits • 39 Features
Aug 1, 2025August 2025 monthly highlights for canonical/lxd focused on strengthening cluster identity, authentication, and API surfaces, delivering measurable business value through safer upgrades, stronger security posture, and more reliable operations. Key outcomes: - Implemented a robust Server UUID lifecycle (generation via UUIDv7, early initialization in Daemon.init, and exposure through OS surfaces) with tests validating immutability and init order. - Propagated serverUUID across cluster/db and storage layers (EnsureSchema/OpenCluster integration; updated tests; OS.ServerUUID exposure) to ensure a single source of truth for cluster identity. - Introduced bearer authentication enhancements and DevLXD integration (bearer identity management, signing keys, encryption utilities, and related API extensions) with token caching and API surface updates. - Introduced Requestor abstraction and migrated core components (API handlers, devlxd, operations, drivers, cluster) to use the new model, improving testability and decoupling. - Strengthened auth secret lifecycle and management (enforce minimum expiry, rotation ID handling, and related unit tests) to improve security and operational reliability. Overall impact: - Safer upgrades and long-lived cluster identities reduce operational risk during reconfigurations and migrations. - clearer, token-based authentication workflows andDevLXD integration enable secure, scalable client/server interactions. - Architectural refactors (Requestor, metadata, triggers) set the stage for faster feature delivery with better test coverage and fewer regressions. Technologies/skills demonstrated: - Go language and large-scale codebase refactoring, UUID handling (v7), and early init patterns. - DB/schema evolution including triggers, indices, and update-schema automation. - JWT signing, encryption key management, and bearer token flows. - API design and migration patterns (Requestor abstraction) and DevLXD integration. - Internationalization/Documentation alignment and metadata standardization.
151 Commits • 39 Features
Aug 1, 2025August 2025 monthly highlights for canonical/lxd focused on strengthening cluster identity, authentication, and API surfaces, delivering measurable business value through safer upgrades, stronger security posture, and more reliable operations. Key outcomes: - Implemented a robust Server UUID lifecycle (generation via UUIDv7, early initialization in Daemon.init, and exposure through OS surfaces) with tests validating immutability and init order. - Propagated serverUUID across cluster/db and storage layers (EnsureSchema/OpenCluster integration; updated tests; OS.ServerUUID exposure) to ensure a single source of truth for cluster identity. - Introduced bearer authentication enhancements and DevLXD integration (bearer identity management, signing keys, encryption utilities, and related API extensions) with token caching and API surface updates. - Introduced Requestor abstraction and migrated core components (API handlers, devlxd, operations, drivers, cluster) to use the new model, improving testability and decoupling. - Strengthened auth secret lifecycle and management (enforce minimum expiry, rotation ID handling, and related unit tests) to improve security and operational reliability. Overall impact: - Safer upgrades and long-lived cluster identities reduce operational risk during reconfigurations and migrations. - clearer, token-based authentication workflows andDevLXD integration enable secure, scalable client/server interactions. - Architectural refactors (Requestor, metadata, triggers) set the stage for faster feature delivery with better test coverage and fewer regressions. Technologies/skills demonstrated: - Go language and large-scale codebase refactoring, UUID handling (v7), and early init patterns. - DB/schema evolution including triggers, indices, and update-schema automation. - JWT signing, encryption key management, and bearer token flows. - API design and migration patterns (Requestor abstraction) and DevLXD integration. - Internationalization/Documentation alignment and metadata standardization.
August 2025
July 2025
95 Commits • 31 Features
Jul 1, 2025July 2025 monthly summary focusing on delivering multi-tenant reliability and cross-project consistency for canonical/lxd, with security, networking, and test-automation improvements that enable safer multi-tenant operations and faster debugging.
July 2025
95 Commits • 31 Features
Jul 1, 2025July 2025 monthly summary focusing on delivering multi-tenant reliability and cross-project consistency for canonical/lxd, with security, networking, and test-automation improvements that enable safer multi-tenant operations and faster debugging.
June 2025
13 Commits • 4 Features
Jun 1, 2025June 2025 performance summary for canonical/lxd focusing on delivering user-facing features, security enhancements, and developer experience improvements. Key work spanned documentation, API extensions, and security hardening, with strong emphasis on business value through better usability, stronger access control, and consistent API/metadata formatting.
13 Commits • 4 Features
Jun 1, 2025June 2025 performance summary for canonical/lxd focusing on delivering user-facing features, security enhancements, and developer experience improvements. Key work spanned documentation, API extensions, and security hardening, with strong emphasis on business value through better usability, stronger access control, and consistent API/metadata formatting.
June 2025
May 2025
17 Commits • 3 Features
May 1, 2025May 2025 monthly summary focusing on delivering placement group capabilities, security hardening, code quality, and migration correctness. Key customer value was unlocked through improved workload locality, cluster stability, and maintainability.
May 2025
17 Commits • 3 Features
May 1, 2025May 2025 monthly summary focusing on delivering placement group capabilities, security hardening, code quality, and migration correctness. Key customer value was unlocked through improved workload locality, cluster stability, and maintainability.
April 2025
49 Commits • 10 Features
Apr 1, 2025April 2025: End-to-end overhaul of LXD CLI completions and resource-matching logic, delivering faster, safer, and more discoverable operations. The month focused on refactoring and expanding completion support across clusters, instances, networks, zones, profiles, projects and storage pools, with generalized comparison utilities and improved remote/project handling. Key enhancements include server/instance configuration completion refinements, device-subtype completions, and snapshot/rename support, plus expanded CLI coverage (export, monitor, rebuild, file commands) and second-argument completions for instance remotes. Additional improvements covered completion cleanup (removing unused code and deprecated image fingerprints), internal remotes refactor, and testing upgrades. Governance and visibility gains were enabled by a new client utility to extract all-projects resource names and the introduction of the placement package for improved scheduling. Business value was realized through faster, more reliable completions, safer configuration workflows, reduced risk in multi-project environments, and improved security controls for restricted clients.
49 Commits • 10 Features
Apr 1, 2025April 2025: End-to-end overhaul of LXD CLI completions and resource-matching logic, delivering faster, safer, and more discoverable operations. The month focused on refactoring and expanding completion support across clusters, instances, networks, zones, profiles, projects and storage pools, with generalized comparison utilities and improved remote/project handling. Key enhancements include server/instance configuration completion refinements, device-subtype completions, and snapshot/rename support, plus expanded CLI coverage (export, monitor, rebuild, file commands) and second-argument completions for instance remotes. Additional improvements covered completion cleanup (removing unused code and deprecated image fingerprints), internal remotes refactor, and testing upgrades. Governance and visibility gains were enabled by a new client utility to extract all-projects resource names and the introduction of the placement package for improved scheduling. Business value was realized through faster, more reliable completions, safer configuration workflows, reduced risk in multi-project environments, and improved security controls for restricted clients.
April 2025
March 2025
15 Commits • 4 Features
Mar 1, 2025Month: 2025-03 — Focused on strengthening LXD cluster reliability, improving remote transport handling, and tightening code quality and documentation. Key achievements included: - Cluster API initialization robustness: improved initialization of slices with capacity to prevent uninitialized elements during cluster node management and group handling (commit 29941e4c6db3bd201b38c92c67edb19c5ad2f35a). - GetInstanceServerWithConnectionArgs: introduced to override default connection arguments for LXD remotes and streamline handling of transport wrappers. - Codebase restructuring and test utilities: removed the cluster_test package to simplify structure and promote reuse of the newDB helper in tests (commit eb44095b919a50e3a12b32e1f82d2ca5162d1062). - Code quality and maintainability: broad cleanup for lint adherence and static analysis improvements across multiple packages (client, lxc, lxd/db/cluster, lxd/instance/drivers, lxd/storage). - Documentation and tests reliability: API documentation corrected TLS identity naming to trust_token across REST and Swagger with YAML refreshes and request-body struct corrections; unit tests updated to correctly verify unique constraint error codes (commits 95fa8a8690350e2725755811cd08fc98f319d541, 8c67ffda0288a002d5354d5037efb774a5924556, f808c6a560b390e7c5beff5fdcb21223be4928ac, 48e529f17fa62b5ad0bd93f29840d859f8087932, db7505bfc76853762a205a9a17ad69f5dc4802f0).
March 2025
15 Commits • 4 Features
Mar 1, 2025Month: 2025-03 — Focused on strengthening LXD cluster reliability, improving remote transport handling, and tightening code quality and documentation. Key achievements included: - Cluster API initialization robustness: improved initialization of slices with capacity to prevent uninitialized elements during cluster node management and group handling (commit 29941e4c6db3bd201b38c92c67edb19c5ad2f35a). - GetInstanceServerWithConnectionArgs: introduced to override default connection arguments for LXD remotes and streamline handling of transport wrappers. - Codebase restructuring and test utilities: removed the cluster_test package to simplify structure and promote reuse of the newDB helper in tests (commit eb44095b919a50e3a12b32e1f82d2ca5162d1062). - Code quality and maintainability: broad cleanup for lint adherence and static analysis improvements across multiple packages (client, lxc, lxd/db/cluster, lxd/instance/drivers, lxd/storage). - Documentation and tests reliability: API documentation corrected TLS identity naming to trust_token across REST and Swagger with YAML refreshes and request-body struct corrections; unit tests updated to correctly verify unique constraint error codes (commits 95fa8a8690350e2725755811cd08fc98f319d541, 8c67ffda0288a002d5354d5037efb774a5924556, f808c6a560b390e7c5beff5fdcb21223be4928ac, 48e529f17fa62b5ad0bd93f29840d859f8087932, db7505bfc76853762a205a9a17ad69f5dc4802f0).
Activity
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Quality Metrics
Correctness92.8%
Maintainability90.2%
Architecture89.6%
Performance87.4%
AI Usage20.4%
Skills & Technologies
Programming Languages
BashGettextGoJQJSONMakefileMarkdownOpenFGAPOSQL
Technical Skills
API DesignAPI DevelopmentAPI DocumentationAPI IntegrationAPI Integration TestingAPI InteractionAPI SecurityAPI SpecificationAPI TestingAPI designAPI developmentAPI integrationAccess ControlAuth0 configurationAuthentication
Repositories Contributed To
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