HAF Release Notes

• #210: Removed row_id indexes for irreversible data contexts.

• Tables and views owned by application contexts are now placed in separate schemas, allowing the same application to run simultaneously in the same HAF database.

• Encoded operation type and block number in the operation ID value to reduce disk space usage in the operation table.

• Introduced a new, much simpler method for writing application loops that encapsulates context attachment, transaction committing, and explicit application state definitions.

• Moved non-updatable elements of HAF to the hafd schema, while updatable elements remain in hive.

• #244: Automatically log application state changes.

• #249: Support for applications to create indexes.

• Possible to update state providers.

• Use pg_cron to execute context detachment for dead applications.

• Added keyauth state provider.

Several bug fixes and Infrastructure updates, including dockerization, enhanced test coverage, CI/CD pipeline improvements

Warning: this update (due to underlying Hived modifications) changes hived/HAF state format and requires HAF node replay, if you are using version 1.27.4.0 or earlier.

New features, functional improvements, and optimizations

1. Support for the new Query Supervisor (limits database resources available to database roles during a query). See documentation located here: README.md

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2. Dockerized environment supports --load-snapshot/--dump-snapshot options backup/restore a HAF server (including hived): !282
3. Optimization of hive.operation type conversion into textual format (improves backup/restore times): !292 . Right now by default hive.operation is converted into bytea literal (representing operation binary format common to blockchain storage). To use the legacy JSON-textual form, use the body column provided by hive.operations_view (also in app-specific operations view) or change your app to use the new body_binary column (this will improve performance).

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4. New function available for calculating HivePower value: !287
5. Complex HAF apps can now be built from multiple smaller apps: !277

Bugfixes:

1. Fixed a constraint violation while processing data in Account Metadata State Provider (common Metadata Collector provided by HAF, next to be instantiated at HAF-app level): !274
2. Eliminated hang of hived node while closing after earlier caught PostgreSQL related error: !278
3. Community reported problem related to processing forks by the HAF server: !285
4. Multiple app roles are allowed to create app-specific tables like also perform synchronization (simplifies and makes deployments much more secure):
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5. HAF functions will explicitly fail when app-specific table identifiers are too long: !295

Warning: this update changes hived/HAF state format and requires HAF node replay, if you are using version 1.27.3 or earlier.

1. . New features:
   • Optimized HAF operation storage to reduce its size (Hive operations are now serialized to binary form in same way as blockchain does): !201
   • Optimized Hive operation to JSONB type conversion: !228
   • HAF knows hardfork data and stores this info in the dedicated table: !172
   • HAF provides subset of basic DGPO data specific to given block: !213
   • HAF is able to store and verify a database schema to match running HAF node to existing database: !229
   • Support for dump and load HAF instances (specific to backup administration purposes): !194
   • Prepared Account Metadata Consensus Data State provider to be used at implementation of account metadata HAF application
   • Preliminary boilerplate for building and deploying HAF applications using docker compose: !217
   • Upgrade to Ubuntu 22.04 as a base supported OS
2. Devops/automations:
   • docker setup permission fixes
   • Gitlab cache is used for HAF data generation for testing purposes !220
   • Official HAF images can be built and published by CI job: !219
3. Bugfixes:
   • fixed deadlock during joining massive operation processor

First release of Hive Application Framework, based on Hived version: v1.27.3