Graylog2/graylog2-server
Dec 2024 – Jan 2026
13 Months active
Languages Used
JavaTOMLJavaScriptTypeScriptMarkdownJSON
Technical Skills
Backend DevelopmentSystem ConfigurationAPI DevelopmentDocumentationElasticsearchOpenSearch
Jan Heise
PROFILE
Jan Heise
Jan Heise contributed extensively to the Graylog2-server repository, delivering features and fixes that enhanced security, data export, and onboarding workflows. Over 13 months, Jan engineered robust backend solutions in Java and TypeScript, such as a pluggable entity permission framework and transactional error handling for index migrations, which improved data governance and deployment reliability. He implemented configurable export fields, refined alert aggregation, and strengthened access control, ensuring only authorized users could access sensitive data. Jan’s work also included modular API development, rigorous testing, and documentation improvements, resulting in a more maintainable, secure, and user-friendly system for both operators and developers.
Overall Statistics
Feature vs Bugs
66%Features
Repository Contributions
55Total
Bugs
15
Commits
55
Features
29
Lines of code
5,650
Activity Months13
Your Network
49 people
Work History
January 2026
2 Commits • 1 Features
Jan 1, 2026January 2026 saw a focused set of improvements in Graylog2-server, delivering an onboarding-friendly feature and strengthening data-migration reliability. The Config.withWelcome convenience method was added to include a Welcome object in product configuration, simplifying onboarding-related customization. This was complemented by robust error handling during index rotations, making FieldTypeMapping changes more transactional to improve consistency and rollback during migrations for MongoDB and OpenSearch. Together, these changes reduce onboarding effort and lower migration risk, contributing to higher reliability in deployments.
2 Commits • 1 Features
Jan 1, 2026January 2026 saw a focused set of improvements in Graylog2-server, delivering an onboarding-friendly feature and strengthening data-migration reliability. The Config.withWelcome convenience method was added to include a Welcome object in product configuration, simplifying onboarding-related customization. This was complemented by robust error handling during index rotations, making FieldTypeMapping changes more transactional to improve consistency and rollback during migrations for MongoDB and OpenSearch. Together, these changes reduce onboarding effort and lower migration risk, contributing to higher reliability in deployments.
January 2026
December 2025
4 Commits • 2 Features
Dec 1, 2025December 2025 (Graylog2-server) focused on strengthening alerting capabilities while preserving configuration stability. The team advanced notification data quality and eligibility, enabling faster incident response, and actively managed changes to documentation tooling to avoid disruption of existing deployments.
December 2025
4 Commits • 2 Features
Dec 1, 2025December 2025 (Graylog2-server) focused on strengthening alerting capabilities while preserving configuration stability. The team advanced notification data quality and eligibility, enabling faster incident response, and actively managed changes to documentation tooling to avoid disruption of existing deployments.
November 2025
3 Commits • 3 Features
Nov 1, 2025November 2025: Delivered three high-impact backend enhancements for Graylog2-server, focusing on improving reporting capabilities, release documentation accessibility, and deterministic highlighting. Implemented configurable export fields for MessageList exports, reorganized the changelog to a correct directory for easier access to release notes, and preserved the order of highlighting rules by switching from a set to a list, including relevant changelog updates and test fixes. These changes enhance user control over data exports, improve release transparency, and increase reliability of highlighting behavior, contributing to faster incident resolution and a more consistent user experience.
3 Commits • 3 Features
Nov 1, 2025November 2025: Delivered three high-impact backend enhancements for Graylog2-server, focusing on improving reporting capabilities, release documentation accessibility, and deterministic highlighting. Implemented configurable export fields for MessageList exports, reorganized the changelog to a correct directory for easier access to release notes, and preserved the order of highlighting rules by switching from a set to a list, including relevant changelog updates and test fixes. These changes enhance user control over data exports, improve release transparency, and increase reliability of highlighting behavior, contributing to faster incident resolution and a more consistent user experience.
November 2025
October 2025
3 Commits • 1 Features
Oct 1, 2025October 2025 performance highlights for Graylog2-server. Delivered feature enhancements and stability improvements that improve query reliability, user experience, and CI robustness across complex queries and URL validations. The changes align with OpenSearch settings, improve error messaging, and strengthen integration testing for deployment confidence.
October 2025
3 Commits • 1 Features
Oct 1, 2025October 2025 performance highlights for Graylog2-server. Delivered feature enhancements and stability improvements that improve query reliability, user experience, and CI robustness across complex queries and URL validations. The changes align with OpenSearch settings, improve error messaging, and strengthen integration testing for deployment confidence.
September 2025
6 Commits • 3 Features
Sep 1, 2025Month: 2025-09 — Delivered key features, API improvements, and test reliability enhancements for Graylog2-server, with a focus on business value and long-term stability. Key features include all-time search filter support, API property naming consistency, and strengthened test infrastructure and diagnostics. These changes improve data accessibility, API usability for external clients, and CI reliability, enabling faster releases and reduced debugging time.
6 Commits • 3 Features
Sep 1, 2025Month: 2025-09 — Delivered key features, API improvements, and test reliability enhancements for Graylog2-server, with a focus on business value and long-term stability. Key features include all-time search filter support, API property naming consistency, and strengthened test infrastructure and diagnostics. These changes improve data accessibility, API usability for external clients, and CI reliability, enabling faster releases and reduced debugging time.
September 2025
July 2025
5 Commits • 2 Features
Jul 1, 2025July 2025 (Graylog2/graylog2-server): Delivered targeted fixes and enhancements that improve concurrency safety, query efficiency, access control, UI state accuracy, and event definition dependency resolution. Major contributions include stabilizing RecentActivityService to prevent race conditions during collection creation; optimizing search filter creation to avoid unnecessary query validation checks; restricting plugin configuration page visibility to configurations the user has read access; adding a method to fetch widget positions by ID from view state with null entries filtered; and enhancing event sharing by including notification GRNs alongside streams in dependency checks. These changes reduce runtime risk, improve data integrity, tighten security, and provide clearer operational visibility. Commits touched include: bdeabf42b64da77a77a77b3b6410846daadc11aa231, 0d25a3f38c666f6e9c90e560138912cbd9ac19bb, 9296f126c866d172fa164941c45f5514d7540de4, a243530d416eba8644a262dc64ecbd12a25591f1, c6b6a274b6efda95b5362a1f6e73c67952d03a2c.
July 2025
5 Commits • 2 Features
Jul 1, 2025July 2025 (Graylog2/graylog2-server): Delivered targeted fixes and enhancements that improve concurrency safety, query efficiency, access control, UI state accuracy, and event definition dependency resolution. Major contributions include stabilizing RecentActivityService to prevent race conditions during collection creation; optimizing search filter creation to avoid unnecessary query validation checks; restricting plugin configuration page visibility to configurations the user has read access; adding a method to fetch widget positions by ID from view state with null entries filtered; and enhancing event sharing by including notification GRNs alongside streams in dependency checks. These changes reduce runtime risk, improve data integrity, tighten security, and provide clearer operational visibility. Commits touched include: bdeabf42b64da77a77a77b3b6410846daadc11aa231, 0d25a3f38c666f6e9c90e560138912cbd9ac19bb, 9296f126c866d172fa164941c45f5514d7540de4, a243530d416eba8644a262dc64ecbd12a25591f1, c6b6a274b6efda95b5362a1f6e73c67952d03a2c.
June 2025
5 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for Graylog2-server: Key features delivered: - Extensible entity permission mapping framework: introduced a pluggable prefix mapper for entity permissions checks and updated permission checking logic to use the new system. Commit: 1159e96fcfd1648657bc67d5e55e58d1373e6420. - Security hardening: Event data access and UI permissions: restricted visibility of event actions and data to users with explicit read/edit permissions; filters applied to EventDefinitions and Streams; hides sensitive actions like 'Link to Replay Search' from unauthorized users. Commits: 108eacd9bd9ecf3403e6385f8d63cccf578f0509 and 15d5897f9dac4048ee655e8794688a165e0973e9. Major bugs fixed: - Strict unused-parameter query validation: treat unused query parameters as errors to prevent submission of invalid queries and improve system stability. Commit: dbe27595d99e024e1c74bbf1a81fe067b85267ae. - DatePicker timerange calculation fix: correct the 'to' value when 'from' is set to 'All time'. Commit: 61ef23948c79cb48a9b53f46ebf95714155db402. Overall impact and accomplishments: - Strengthened security posture and data governance with a pluggable permission framework and per-user visibility controls, reducing risk of unauthorized access. - Enhanced operational stability by rigorous query validation and accurate timerange handling, improving user reliability and system correctness. - Established groundwork for future permission model extensions and easier maintenance via modular design and traceable commits. Technologies/skills demonstrated: - Permissions architecture design (pluggable prefix mapper) and secure UI/data access enforcement. - Back-end validation and UI-layer consistency, timerange logic, and commit-level traceability. - Focus on business value: reduces data exposure, prevents invalid queries, and enables flexible access control for multi-tenant or role-based environments.
5 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for Graylog2-server: Key features delivered: - Extensible entity permission mapping framework: introduced a pluggable prefix mapper for entity permissions checks and updated permission checking logic to use the new system. Commit: 1159e96fcfd1648657bc67d5e55e58d1373e6420. - Security hardening: Event data access and UI permissions: restricted visibility of event actions and data to users with explicit read/edit permissions; filters applied to EventDefinitions and Streams; hides sensitive actions like 'Link to Replay Search' from unauthorized users. Commits: 108eacd9bd9ecf3403e6385f8d63cccf578f0509 and 15d5897f9dac4048ee655e8794688a165e0973e9. Major bugs fixed: - Strict unused-parameter query validation: treat unused query parameters as errors to prevent submission of invalid queries and improve system stability. Commit: dbe27595d99e024e1c74bbf1a81fe067b85267ae. - DatePicker timerange calculation fix: correct the 'to' value when 'from' is set to 'All time'. Commit: 61ef23948c79cb48a9b53f46ebf95714155db402. Overall impact and accomplishments: - Strengthened security posture and data governance with a pluggable permission framework and per-user visibility controls, reducing risk of unauthorized access. - Enhanced operational stability by rigorous query validation and accurate timerange handling, improving user reliability and system correctness. - Established groundwork for future permission model extensions and easier maintenance via modular design and traceable commits. Technologies/skills demonstrated: - Permissions architecture design (pluggable prefix mapper) and secure UI/data access enforcement. - Back-end validation and UI-layer consistency, timerange logic, and commit-level traceability. - Focus on business value: reduces data exposure, prevents invalid queries, and enables flexible access control for multi-tenant or role-based environments.
June 2025
May 2025
11 Commits • 5 Features
May 1, 2025In May 2025, the Graylog2-server focused on strengthening security and permissions, refining data access controls, and stabilizing tests, while delivering enhanced export and reporting capabilities that improve data sharing governance and user experience. The month also included enterprise-oriented permission governance improvements and backend/test reliability enhancements, contributing to stronger compliance, reliability, and business value.
May 2025
11 Commits • 5 Features
May 1, 2025In May 2025, the Graylog2-server focused on strengthening security and permissions, refining data access controls, and stabilizing tests, while delivering enhanced export and reporting capabilities that improve data sharing governance and user experience. The month also included enterprise-oriented permission governance improvements and backend/test reliability enhancements, contributing to stronger compliance, reliability, and business value.
April 2025
9 Commits • 6 Features
Apr 1, 2025April 2025 Graylog2-server monthly summary: Delivered key features and reliability improvements across core areas including access control, data lake enablement, search optimization, and testing stability. Business value was realized through faster feature enablement, improved data access workflows, and more reliable operations.
9 Commits • 6 Features
Apr 1, 2025April 2025 Graylog2-server monthly summary: Delivered key features and reliability improvements across core areas including access control, data lake enablement, search optimization, and testing stability. Business value was realized through faster feature enablement, improved data access workflows, and more reliable operations.
April 2025
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for Graylog2/graylog2-server focusing on security hardening and maintainability. Delivered a deserialization security fix for SearchError, standardized event source product reporting across codecs, and modularized scripting API to improve view/search functionality. These changes enhance security, reduce leakage, and improve future codec updates and extensibility.
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for Graylog2/graylog2-server focusing on security hardening and maintainability. Delivered a deserialization security fix for SearchError, standardized event source product reporting across codecs, and modularized scripting API to improve view/search functionality. These changes enhance security, reduce leakage, and improve future codec updates and extensibility.
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025: Key improvements to Graylog server focused on startup reliability and event processing robustness. Delivered two changes in Graylog2/graylog2-server: a startup cleanup job for Data Lake search jobs to enable manual restart and reduce startup failures, and a bug fix ensuring Content Pack Event Query Parameters are carried through correctly, improving event processing reliability.
2 Commits • 1 Features
Feb 1, 2025February 2025: Key improvements to Graylog server focused on startup reliability and event processing robustness. Delivered two changes in Graylog2/graylog2-server: a startup cleanup job for Data Lake search jobs to enable manual restart and reduce startup failures, and a bug fix ensuring Content Pack Event Query Parameters are carried through correctly, improving event processing reliability.
February 2025
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 — Graylog2/graylog2-server. Focused on reliability, developer experience, and measurable business value. Key outcomes include one bug fix to improve OpenSearch status retrieval and one feature enhancement to the Simple Scripting API, with clear business impact and developer benefits. Key achievements: - OpenSearch index status fetch batched to prevent URL length errors (commit b8e039e105f8f87c94f9c3ae7f74cb16c62ad39f, #21208). - Enhanced Simple Scripting API by adding missing parameter descriptions; updates to API resource Java files and changelog (commit 6dadb92056f945b756ec74a2d4941c1a5ec25e79, #21367).
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 — Graylog2/graylog2-server. Focused on reliability, developer experience, and measurable business value. Key outcomes include one bug fix to improve OpenSearch status retrieval and one feature enhancement to the Simple Scripting API, with clear business impact and developer benefits. Key achievements: - OpenSearch index status fetch batched to prevent URL length errors (commit b8e039e105f8f87c94f9c3ae7f74cb16c62ad39f, #21208). - Enhanced Simple Scripting API by adding missing parameter descriptions; updates to API resource Java files and changelog (commit 6dadb92056f945b756ec74a2d4941c1a5ec25e79, #21367).
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for Graylog2-server: Delivered a feature to exclude system events from content pack exports, filtering internal system events from content pack generation and documenting changes in the changelog. Coordinated work in Graylog2/graylog2-server with targeted commit addressing (#21206).
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for Graylog2-server: Delivered a feature to exclude system events from content pack exports, filtering internal system events from content pack generation and documenting changes in the changelog. Coordinated work in Graylog2/graylog2-server with targeted commit addressing (#21206).
December 2024
Activity
Loading activity data...
Quality Metrics
Correctness88.2%
Maintainability87.0%
Architecture83.8%
Performance81.0%
AI Usage21.4%
Skills & Technologies
Programming Languages
JSONJavaJavaScriptMarkdownTOMLTypeScript
Technical Skills
API DesignAPI DevelopmentAPI IntegrationAPI TestingAccess ControlBackend DevelopmentCode RefactoringComponent DevelopmentConcurrency ControlConfiguration ManagementContent Pack ManagementData ExportDatabase IntegrationDatabase ManagementDate and Time Handling
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline