aws-greengrass/aws-greengrass-lite
Nov 2024 – Apr 2026
10 Months active
Languages Used
CShellYAMLMarkdownCMakeJSON
Technical Skills
C programmingDeployment AutomationEmbedded SystemsSystem ProgrammingSystem programmingC Programming
Felicity
PROFILE
Felicity
Worked extensively on the aws-greengrass/aws-greengrass-lite repository, delivering features and fixes that enhanced deployment automation, security, and reliability for IoT edge runtimes. Leveraged C and Shell scripting to implement TPM-backed TLS key loading, enforce TLS 1.2 minimums, and automate UAT workflows using GitHub Actions. Addressed resource management by fixing directory handle leaks and improved component parsing logic for robust deployments. Enhanced documentation to guide TPM/OpenSSL integration and updated CI/CD pipelines for better maintainability. Focused on system programming and embedded systems, the work prioritized secure provisioning, stable MQTT workflows, and operational resilience, supporting enterprise adoption and long-running deployments.
Overall Statistics
Feature vs Bugs
69%Features
Repository Contributions
23Total
Bugs
5
Commits
23
Features
11
Lines of code
2,611
Activity Months10
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Zadkiel AHARONIANMember
Work History
April 2026
3 Commits • 1 Features
Apr 1, 2026Month 2026-04 — AWS Greengrass Lite: Stabilized MQTT stack and expanded TPM/OpenSSL guidance. Reverted coreMQTT submodule and rolled back MQTTv5 changes to restore prior functionality, addressing compatibility issues and reducing incident risk. Added OpenSSL TPM 2.0 usage documentation to improve developer onboarding and correct configuration. These changes preserve API stability, minimize support overhead, and strengthen reliability for IoT deployments.
3 Commits • 1 Features
Apr 1, 2026Month 2026-04 — AWS Greengrass Lite: Stabilized MQTT stack and expanded TPM/OpenSSL guidance. Reverted coreMQTT submodule and rolled back MQTTv5 changes to restore prior functionality, addressing compatibility issues and reducing incident risk. Added OpenSSL TPM 2.0 usage documentation to improve developer onboarding and correct configuration. These changes preserve API stability, minimize support overhead, and strengthen reliability for IoT deployments.
April 2026
February 2026
1 Commits
Feb 1, 2026Month: 2026-02 Concise monthly summary focused on business value and technical achievements. Key features delivered: - None reported this month; emphasis on reliability and robustness improvements in existing components. Major bugs fixed: - Resource leak fix in aws-greengrass/aws-greengrass-lite: Ensures the DIR opened with fdopendir is automatically closed, with a cleanup mechanism to close the directory handle on scope exit or on error. Commit ac1b385ace43e507ba26783bcef77542d34700b2. Overall impact and accomplishments: - Significantly reduced resource leaks, improving robustness and reliability of the Greengrass Lite runtime. This reduces risk of resource exhaustion in long-running deployments and simplifies maintenance of core filesystem operations. Technologies/skills demonstrated: - Low-level systems programming concepts (fdopendir, DIR) and resource lifecycle management - Automatic cleanup patterns and robust error handling - Code maintenance and reliability improvements in a critical IoT edge runtime Business value: - Increased stability and availability of Greengrass Lite services, lowering downtime risk and operational overhead for run-time management.
February 2026
1 Commits
Feb 1, 2026Month: 2026-02 Concise monthly summary focused on business value and technical achievements. Key features delivered: - None reported this month; emphasis on reliability and robustness improvements in existing components. Major bugs fixed: - Resource leak fix in aws-greengrass/aws-greengrass-lite: Ensures the DIR opened with fdopendir is automatically closed, with a cleanup mechanism to close the directory handle on scope exit or on error. Commit ac1b385ace43e507ba26783bcef77542d34700b2. Overall impact and accomplishments: - Significantly reduced resource leaks, improving robustness and reliability of the Greengrass Lite runtime. This reduces risk of resource exhaustion in long-running deployments and simplifies maintenance of core filesystem operations. Technologies/skills demonstrated: - Low-level systems programming concepts (fdopendir, DIR) and resource lifecycle management - Automatic cleanup patterns and robust error handling - Code maintenance and reliability improvements in a critical IoT edge runtime Business value: - Increased stability and availability of Greengrass Lite services, lowering downtime risk and operational overhead for run-time management.
January 2026
2 Commits • 2 Features
Jan 1, 2026January 2026 summary for aws-greengrass/aws-greengrass-lite focusing on key accomplishments, business value, and technical delivery.
2 Commits • 2 Features
Jan 1, 2026January 2026 summary for aws-greengrass/aws-greengrass-lite focusing on key accomplishments, business value, and technical delivery.
January 2026
December 2025
4 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for aws-greengrass/aws-greengrass-lite: Delivered TPM-based fleet provisioning support, updated templates/build configurations, and aligned CI to TPM-enabled workflows. Fixed a testing branch issue to ensure TPM workflow stability. This work enhances security, automates secure provisioning, and positions Greengrass Lite for better enterprise adoption.
December 2025
4 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for aws-greengrass/aws-greengrass-lite: Delivered TPM-based fleet provisioning support, updated templates/build configurations, and aligned CI to TPM-enabled workflows. Fixed a testing branch issue to ensure TPM workflow stability. This work enhances security, automates secure provisioning, and positions Greengrass Lite for better enterprise adoption.
November 2025
1 Commits • 1 Features
Nov 1, 2025Month 2025-11 — concise summary focusing on key features delivered, major fixes, impact, and skills demonstrated for aws-greengrass Lite.
1 Commits • 1 Features
Nov 1, 2025Month 2025-11 — concise summary focusing on key features delivered, major fixes, impact, and skills demonstrated for aws-greengrass Lite.
November 2025
October 2025
3 Commits • 3 Features
Oct 1, 2025October 2025: Delivered security hardening, improved observability, and streamlined IPC workflows for aws-greengrass/aws-greengrass-lite. Key outcomes include enforcing TLS 1.2 minimum to enable kTLS with verifiable eligibility logging, introducing UpdateState IPC support via gghealthd and simplifying TLS logging, and aligning credential path documentation to the current /var/lib/greengrass/credentials. These changes reduce security risk from misconfigurations, improve diagnostic visibility, and lay groundwork for reliable health/state reporting and easier maintenance.
October 2025
3 Commits • 3 Features
Oct 1, 2025October 2025: Delivered security hardening, improved observability, and streamlined IPC workflows for aws-greengrass/aws-greengrass-lite. Key outcomes include enforcing TLS 1.2 minimum to enable kTLS with verifiable eligibility logging, introducing UpdateState IPC support via gghealthd and simplifying TLS logging, and aligning credential path documentation to the current /var/lib/greengrass/credentials. These changes reduce security risk from misconfigurations, improve diagnostic visibility, and lay groundwork for reliable health/state reporting and easier maintenance.
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025: Delivered TPM-backed TLS private key loading in aws-greengrass/aws-greengrass-lite, enabling hardware-bound private keys for TLS connections. The feature loads private keys from the TPM store when a TPM handle is provided and preserves PEM-based loading as a fallback, strengthening security for edge deployments and reducing private key exposure.
1 Commits • 1 Features
Aug 1, 2025August 2025: Delivered TPM-backed TLS private key loading in aws-greengrass/aws-greengrass-lite, enabling hardware-bound private keys for TLS connections. The feature loads private keys from the TPM store when a TPM handle is provided and preserves PEM-based loading as a fallback, strengthening security for edge deployments and reducing private key exposure.
August 2025
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for aws-greengrass/aws-greengrass-lite: Focused on reliability, testing automation, and deployment efficiency. Delivered automated UAT workflows and a critical HTTP buffer fix, enabling safer releases and deeper validation.
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for aws-greengrass/aws-greengrass-lite: Focused on reliability, testing automation, and deployment efficiency. Delivered automated UAT workflows and a critical HTTP buffer fix, enabling safer releases and deeper validation.
December 2024
3 Commits
Dec 1, 2024December 2024: Key improvements to aws-greengrass/aws-greengrass-lite centered on robust component name extraction in the recipe parser. The parsing logic now reliably derives the component name by splitting on the last hyphen and correcting the backward loop for filenames formatted as '<component_name>-<version>.<extension>'. This work consolidates three related commits to prevent misparsing and improve component mapping, reducing downstream deployment errors and triage time. Overall, the changes improve reliability of component identification and support smoother deployments.
3 Commits
Dec 1, 2024December 2024: Key improvements to aws-greengrass/aws-greengrass-lite centered on robust component name extraction in the recipe parser. The parsing logic now reliably derives the component name by splitting on the last hyphen and correcting the backward loop for filenames formatted as '<component_name>-<version>.<extension>'. This work consolidates three related commits to prevent misparsing and improve component mapping, reducing downstream deployment errors and triage time. Overall, the changes improve reliability of component identification and support smoother deployments.
December 2024
November 2024
2 Commits • 1 Features
Nov 1, 2024November 2024 focused on stabilizing deployment workflows and tightening OS-specific logic to improve reliability and predictability across Linux environments. Key improvements include a Linux manifest_selection OS compatibility fix and a deployment refactor that installs all components before starting services, reducing post-deployment issues and service misconfigurations.
November 2024
2 Commits • 1 Features
Nov 1, 2024November 2024 focused on stabilizing deployment workflows and tightening OS-specific logic to improve reliability and predictability across Linux environments. Key improvements include a Linux manifest_selection OS compatibility fix and a deployment refactor that installs all components before starting services, reducing post-deployment issues and service misconfigurations.
Activity
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Quality Metrics
Correctness87.4%
Maintainability87.0%
Architecture82.6%
Performance80.8%
AI Usage23.4%
Skills & Technologies
Programming Languages
CCMakeJSONMarkdownShellYAML
Technical Skills
AWSBackend DevelopmentC ProgrammingC programmingCI/CDCMakeCloudFormationContinuous IntegrationCryptographyDeployment AutomationDevOpsDocumentationEmbedded SystemsGitHub ActionsIoT Development
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