OpenNMS/opennms
Sep 2025 – Feb 2026
4 Months active
Languages Used
AsciiDocJavaAsciidocasciidocXML
Technical Skills
Database MonitoringDocumentationJDBCJavaUnit Testingdatabase management
David Schlenk
PROFILE
David Schlenk
Overall Statistics
Feature vs Bugs
60%Features
Repository Contributions
5Total
Bugs
2
Commits
5
Features
3
Lines of code
852
Activity Months4
Your Network
25 people
Work History
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026: Delivered Prometheus monitoring integration for OpenNMS by adding the Prometheus collector XSD dependency to pom.xml and including the collector schema. This enables Prometheus-based metrics collection, dashboards, and alerts, strengthening observability and incident response. No major bugs fixed this month; minor maintenance tasks completed as part of integrating the new monitoring stack. Overall business impact: improved visibility into system performance, faster issue detection, and better data-driven decision making. Technologies/skills demonstrated: Maven dependency management, POM changes, schema inclusion, Prometheus integration, observability best practices.
1 Commits • 1 Features
Feb 1, 2026February 2026: Delivered Prometheus monitoring integration for OpenNMS by adding the Prometheus collector XSD dependency to pom.xml and including the collector schema. This enables Prometheus-based metrics collection, dashboards, and alerts, strengthening observability and incident response. No major bugs fixed this month; minor maintenance tasks completed as part of integrating the new monitoring stack. Overall business impact: improved visibility into system performance, faster issue detection, and better data-driven decision making. Technologies/skills demonstrated: Maven dependency management, POM changes, schema inclusion, Prometheus integration, observability best practices.
February 2026
January 2026
1 Commits
Jan 1, 2026January 2026 monthly summary for OpenNMS/opennms: Delivered a targeted bug fix to correct foreign identity field mapping in CollectionSetMapper, preventing data misrepresentation across collection relationships. The fix, associated with NMS-19362, is implemented in commit 8543da6717edd416fc09aa5ee8e10d14a0af0a51 and signed off by David Schlenk. This improves data integrity and reliability of downstream analytics and dashboards.
January 2026
1 Commits
Jan 1, 2026January 2026 monthly summary for OpenNMS/opennms: Delivered a targeted bug fix to correct foreign identity field mapping in CollectionSetMapper, preventing data misrepresentation across collection relationships. The fix, associated with NMS-19362, is implemented in commit 8543da6717edd416fc09aa5ee8e10d14a0af0a51 and signed off by David Schlenk. This improves data integrity and reliability of downstream analytics and dashboards.
December 2025
2 Commits • 1 Features
Dec 1, 2025Dec 2025 monthly summary for OpenNMS/opennms focused on documentation and maintainability improvements that enhance customer guidance and future-proof the product. Delivered two targeted documentation updates: (1) Deprecation notice for JRobin time series database with an explicit plan for removal in future releases; (2) Alignment of Kafka Producer Configuration documentation by adding a missing newline that fixed header rendering. These changes reduce customer confusion, minimize support friction, and establish clearer deprecation messaging, while preserving docs quality and release readiness.
2 Commits • 1 Features
Dec 1, 2025Dec 2025 monthly summary for OpenNMS/opennms focused on documentation and maintainability improvements that enhance customer guidance and future-proof the product. Delivered two targeted documentation updates: (1) Deprecation notice for JRobin time series database with an explicit plan for removal in future releases; (2) Alignment of Kafka Producer Configuration documentation by adding a missing newline that fixed header rendering. These changes reduce customer confusion, minimize support friction, and establish clearer deprecation messaging, while preserving docs quality and release readiness.
December 2025
September 2025
1 Commits • 1 Features
Sep 1, 20252025-09 monthly summary for OpenNMS/opennms focusing on observability, compatibility, and configuration simplification. Delivered a targeted enhancement to JDBCQueryMonitor that improves incident troubleshooting and cross-environment reliability.
September 2025
1 Commits • 1 Features
Sep 1, 20252025-09 monthly summary for OpenNMS/opennms focusing on observability, compatibility, and configuration simplification. Delivered a targeted enhancement to JDBCQueryMonitor that improves incident troubleshooting and cross-environment reliability.
Activity
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Quality Metrics
Correctness98.0%
Maintainability92.0%
Architecture92.0%
Performance92.0%
AI Usage28.0%
Skills & Technologies
Programming Languages
AsciiDocAsciidocJavaXMLasciidoc
Technical Skills
Database MonitoringDependency ManagementDocumentationJDBCJavaMavenMockitoUnit Testingdatabase managementdocumentationtechnical writing
Repositories Contributed To
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