hiero-ledger/hiero-mirror-node
Jul 2025 – May 2026
11 Months active
Languages Used
JavaYAMLDraw.ioSQLGherkinSolidityKotlinMarkdown
Technical Skills
API DesignBackend DevelopmentSmart ContractsTestingDatabase DesignERD Visualization
ashumahajan
PROFILE
Ashumahajan
Over eleven months, this developer contributed to the hiero-ledger/hiero-mirror-node repository, building features that enhanced contract management, database reliability, and API robustness. They implemented smart contract nonce verification, dynamic hook systems, and configuration-driven ledger data ingestion, using Java, SQL, and Spring Framework. Their work included designing and updating database schemas, developing REST APIs, and modernizing build tooling with esbuild and Docker. They focused on end-to-end acceptance testing, error handling improvements, and cross-component compatibility, ensuring reliable transaction processing and scalable data management. Through technical documentation and collaborative code reviews, they delivered maintainable solutions that improved system reliability and onboarding efficiency.
Overall Statistics
Feature vs Bugs
94%Features
Repository Contributions
22Total
Bugs
1
Commits
22
Features
16
Lines of code
14,912
Activity Months11
Your Network
57 peopleSame Organization
@swirldslabs.com36
Work History
May 2026
1 Commits • 1 Features
May 1, 2026May 2026: Delivered configuration-driven ledger data ingestion for the hiero-mirror-node, enabling loading of network ledger information from configuration and synchronized ledger data across nodes. Introduced LedgerLoader and updated supporting components to support ledger data loading and management, establishing a scalable foundation for future ledger features and faster onboarding of network configurations. This work reduces manual data handling, improves data consistency, and enables dynamic network configurations across mirror nodes.
1 Commits • 1 Features
May 1, 2026May 2026: Delivered configuration-driven ledger data ingestion for the hiero-mirror-node, enabling loading of network ledger information from configuration and synchronized ledger data across nodes. Introduced LedgerLoader and updated supporting components to support ledger data loading and management, establishing a scalable foundation for future ledger features and faster onboarding of network configurations. This work reduces manual data handling, improves data consistency, and enables dynamic network configurations across mirror nodes.
May 2026
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026: Focused contributions to the hiero-ledger/hiero-mirror-node repository, delivering API reliability improvements and error handling enhancements. The primary feature delivered was a refactor of the HTTP error middleware to map specific error types to accurate HTTP status codes, resulting in clearer and more actionable error responses for API clients. In addition, a critical bug fix addressed an error message issue caused by minification in esBuild, improving error visibility and client debugging in production builds (references: #13267). These changes were implemented with minimal surface area and prepared for production rollout, reflecting strong collaboration with the team and attention to build tooling stability. Overall impact: reduced API confusion for consumers, improved debuggability for developers, and strengthened production reliability across the mirror node service. Top technologies/skills demonstrated: HTTP middleware design, error handling strategies, build tooling (esBuild), clean commit hygiene, and focused debugging of minification-related issues.
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026: Focused contributions to the hiero-ledger/hiero-mirror-node repository, delivering API reliability improvements and error handling enhancements. The primary feature delivered was a refactor of the HTTP error middleware to map specific error types to accurate HTTP status codes, resulting in clearer and more actionable error responses for API clients. In addition, a critical bug fix addressed an error message issue caused by minification in esBuild, improving error visibility and client debugging in production builds (references: #13267). These changes were implemented with minimal surface area and prepared for production rollout, reflecting strong collaboration with the team and attention to build tooling stability. Overall impact: reduced API confusion for consumers, improved debuggability for developers, and strengthened production reliability across the mirror node service. Top technologies/skills demonstrated: HTTP middleware design, error handling strategies, build tooling (esBuild), clean commit hygiene, and focused debugging of minification-related issues.
March 2026
5 Commits • 3 Features
Mar 1, 2026March 2026 monthly summary for hiero-mirror-node focusing on delivered features, infrastructure improvements, and impact realized.
5 Commits • 3 Features
Mar 1, 2026March 2026 monthly summary for hiero-mirror-node focusing on delivered features, infrastructure improvements, and impact realized.
March 2026
February 2026
4 Commits • 3 Features
Feb 1, 2026February 2026 monthly summary for hiero-ledger/hiero-mirror-node: Delivered cross-component compatibility improvements, robust Web3 integration, and CI/CD reliability enhancements to reduce staging risk and accelerate deployment velocity. Focused on consensus protocol upgrades, Web3 test hardening, and pre-teardown validation to ensure trustworthy performance signals in the mainnet-staging workflow.
February 2026
4 Commits • 3 Features
Feb 1, 2026February 2026 monthly summary for hiero-ledger/hiero-mirror-node: Delivered cross-component compatibility improvements, robust Web3 integration, and CI/CD reliability enhancements to reduce staging risk and accelerate deployment velocity. Focused on consensus protocol upgrades, Web3 test hardening, and pre-teardown validation to ensure trustworthy performance signals in the mainnet-staging workflow.
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026: Delivered a major storage reliability enhancement in hiero-ledger/hiero-mirror-node by implementing ContractStateChanges-based blockstream hook storage. This change improves the management of contract storage updates and enables linking of child transactions via a nextSibling relationship, strengthening data integrity and traceability for contract state changes.
1 Commits • 1 Features
Jan 1, 2026January 2026: Delivered a major storage reliability enhancement in hiero-ledger/hiero-mirror-node by implementing ContractStateChanges-based blockstream hook storage. This change improves the management of contract storage updates and enables linking of child transactions via a nextSibling relationship, strengthening data integrity and traceability for contract state changes.
January 2026
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025: Focused on strengthening hooks reliability through end-to-end acceptance testing in hiero-mirror-node. Delivered critical test coverage validating hook attachment, execution during transactions, and interactions via the mirror node API. No major bugs fixed this period. The work increases reliability and confidence in deploying hooks in production, enabling safer and faster feature rollouts.
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025: Focused on strengthening hooks reliability through end-to-end acceptance testing in hiero-mirror-node. Delivered critical test coverage validating hook attachment, execution during transactions, and interactions via the mirror node API. No major bugs fixed this period. The work increases reliability and confidence in deploying hooks in production, enabling safer and faster feature rollouts.
November 2025
2 Commits • 1 Features
Nov 1, 2025Monthly summary for 2025-11 for repository hiero-ledger/hiero-mirror-node: focused feature delivery and architectural enhancements centered on dynamic hooks and hook storage to enable customizable contract behavior and improved transaction processing. No major user-facing bug fixes were observed this month; emphasis was on implementing HIP-1195 aligned hook capabilities, storage lifecycle, and EVM integration.
2 Commits • 1 Features
Nov 1, 2025Monthly summary for 2025-11 for repository hiero-ledger/hiero-mirror-node: focused feature delivery and architectural enhancements centered on dynamic hooks and hook storage to enable customizable contract behavior and improved transaction processing. No major user-facing bug fixes were observed this month; emphasis was on implementing HIP-1195 aligned hook capabilities, storage lifecycle, and EVM integration.
November 2025
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary focusing on the Hiero Mirror Node work. Delivered foundational data layer support for hook management by implementing database schema changes, domain objects, and enums to enable hook storage, history, and changes. Updated ERD documentation and provided repository layer implementations to manage the new hook data. This work increases auditability, reliability, and scalability of hook-driven workflows across the Hiero Mirror Node.
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary focusing on the Hiero Mirror Node work. Delivered foundational data layer support for hook management by implementing database schema changes, domain objects, and enums to enable hook storage, history, and changes. Updated ERD documentation and provided repository layer implementations to manage the new hook data. This work increases auditability, reliability, and scalability of hook-driven workflows across the Hiero Mirror Node.
September 2025
4 Commits • 2 Features
Sep 1, 2025Monthly summary for 2025-09: In hiero-mirror-node, delivered targeted improvements focused on reliability, testability, and future data ingestion. Achievements include expanded acceptance tests for Mirror Node accounts, balances, and NFT allowances; a comprehensive HIP-1195 design for Hiero hooks integration; and a bug fix to harden the address book service against partial files. These efforts reduce production risk, improve API reliability, and establish a foundation for scalable data processing.
4 Commits • 2 Features
Sep 1, 2025Monthly summary for 2025-09: In hiero-mirror-node, delivered targeted improvements focused on reliability, testability, and future data ingestion. Achievements include expanded acceptance tests for Mirror Node accounts, balances, and NFT allowances; a comprehensive HIP-1195 design for Hiero hooks integration; and a bug fix to harden the address book service against partial files. These efforts reduce production risk, improve API reliability, and establish a foundation for scalable data processing.
September 2025
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025: Delivered Mirror-node Database ERD and setup artifacts for hiero-ledger/hiero-mirror-node. Implemented a formal database model (ERD) and provisioning artifacts, including an SQL script to truncate data, remove partitions, and add foreign keys; a Draw.io visualization; and IntelliJ IDEA-based instructions to generate the ERD. All changes captured in commit 6f8d8038847a02dcd4ff2f19e4eb8e072292628f titled 'Added Entity Relationship Diagram (#11690)'.
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025: Delivered Mirror-node Database ERD and setup artifacts for hiero-ledger/hiero-mirror-node. Implemented a formal database model (ERD) and provisioning artifacts, including an SQL script to truncate data, remove partitions, and add foreign keys; a Draw.io visualization; and IntelliJ IDEA-based instructions to generate the ERD. All changes captured in commit 6f8d8038847a02dcd4ff2f19e4eb8e072292628f titled 'Added Entity Relationship Diagram (#11690)'.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025: Delivered contract nonce verification in acceptance tests for hiero-ledger/hiero-mirror-node, updated the OpenAPI spec to include a nonce property for contracts, and enhanced test classes to track and assert nonce values for parent and child contracts. This work strengthens end-to-end validation of contract sequencing and improves API clarity and test reliability.
1 Commits • 1 Features
Jul 1, 2025July 2025: Delivered contract nonce verification in acceptance tests for hiero-ledger/hiero-mirror-node, updated the OpenAPI spec to include a nonce property for contracts, and enhanced test classes to track and assert nonce values for parent and child contracts. This work strengthens end-to-end validation of contract sequencing and improves API clarity and test reliability.
July 2025
Activity
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Quality Metrics
Correctness89.6%
Maintainability86.4%
Architecture85.4%
Performance85.4%
AI Usage31.0%
Skills & Technologies
Programming Languages
Draw.ioGherkinJavaJavaScriptKotlinMarkdownSQLSolidityTypeScriptYAML
Technical Skills
API DesignAPI DevelopmentAPI TestingAPI developmentAPI integrationBackend DevelopmentCucumberDatabase DesignDatabase ManagementDistributed SystemsDockerERD VisualizationError HandlingGradleHibernate
Repositories Contributed To
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