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· 3 min read
John Lotoski

High level summary​

The SRE team continues work on Cardano environment improvements and general maintenance.

Some notable recent changes, updates or improvements include:

  • Blockperf new tracing system compatibility PRs have been merged to master.

  • Cardano-node binary release artifacts have been cleaned up, removing some irrelevant binaries and adding tx-generator for the upcoming node 10.5.1 release.

  • SRE has undertaken governance activities on preview and preprod networks to refresh the constitutional committee expiry and reduce committee minimum size to 3. This process has completed on preview and will complete soon on preprod.

Repository Work -- Merged​

Blockperf​

  • Adds a publishing control bool via env var BLOCKPERF_PUBLISH which defaults to True if unset. This supports the use case where published metrics to CF don't make sense, such as temp testnet machines, but blockperf metrics would still be valuable to scrape for internal review. If publishing is disabled, the startup requirements are loosened; for example, cert key declarations are not required. This PR also adds the preview network. blockperf-pr-31

  • Supports new node tracing in a backward compatible manner: adds support for new node tracing system; adds checks for new node tracing system config; adds a boolean env var tracing system selector, BLOCKPERF_LEGACY_TRACING, defaulting to True; updates the readme to reflect the new options and operating modes. blockperf-pr-32

Cardano-airgap​

  • Makes boot relevant files available at predictable paths. An external grub can use these to load the iso image from block device or local boot storage accessible file path cardano-airgap-pr-5

Cardano-node​

  • This PR adds tx-generator and removes several release binaries. To do so, musl builds needed to be added and git hash stamping was applied to set commit version in the binary. Workbench use of tx-generator was changed to a passthru noGitRev package version to avoid redundant building of the same source because of differing commit hash. Release bin filtering was changed from a denyList to an acceptList approach to avoid inclusion creep if the denyList isn't maintained. cardano-node-pr-6271

  • Adds cardano tracer basic startup and connect tests to hydra job checks/nixosTests/cardanoNodeArtifact and also adds cardano tracer basic startup and connect tests to hydra job checks/nixosTests/cardanoNodeEdge. cardano-node-pr-6272

  • Adds cardano-tracer, tx-generator to the release bins, and cleans up the release bins with an allowList approach. Hotfix backport to 10.5.1 cardano-node-pr-6280

Cardano-signer (nix packaged)​

Repository Work In Progress -- PRs and Branches​

· One min read
Alexey Kuleshevich

High level summary​

This period we continued with tackling tech debt, implementing improvements that are necessary for the next Dijkstra era and we prepared the Dijkstra era for proper integration into all other components. Besides this we made various improvements to the constrained-generation library and prepared it for an initial release.

Low level summary​

Features​

  • PR-5136 - Dijkstra for consensus
  • PR-5145 - Fix MultiAsset CDDL spec in Mary and Alonzo
  • PR-5140 - Refactor max refscript size check
  • PR-5097 - Change Tx to an associated data type
  • PR-5165 - Improve PParamsUpdate application in Conway
  • PR-5031 - Change the type of psDeposits to CompactForm Coin

Testing​

  • PR-5139 - constrained-generators: Clean up the API
  • PR-5144 - Remove *Field data types from Generic tests
  • PR-5162 - Update formal-ledger-specifications
  • PR-5155 - constrained-generators: Improve haddocks

Infrastructure and releasing​

  • PR-5152 - Replaced the broken link nix
  • PR-5171 - Migrate constrained-generators to its own repo

· One min read
Jean-Philippe Raynaud

High level overview​

This week, the Mithril team completed the certificate chain synchronization in the follower aggregator. They also continued implementing the mock DMQ node to support end-to-end testing of decentralized signature diffusion. Additionally, the team worked on enhancing the 'verify' command on the client CLI to provide a detailed list of invalid or missing immutable files and kept preparing for the upgrade to Cardano node v.10.5 and the upcoming Mithril distribution.

Finally, they worked on refactoring the 'CardanoNetwork' entity, enhancing the maintainability of the new website, and made progress refactoring the STM cryptographic library.

Low level overview​

  • Completed the issue Synchronize certificate chain of follower aggregator #2534
  • Worked on the issue Enhance STM library readability #2568
  • Worked on the issue Implement a fake DMQ node with Mithril relay #2627
  • Worked on the issue Upgrade to Cardano 10.5 #2623
  • Worked on the issue List the invalid/missing immutable files in the verify command in client CLI #2618
  • Worked on the issue Future-proof maintainability for the new website #2622
  • Worked on the issue Refactor CardanoNetwork entity #2590
  • Worked on the issue Release 2529 distribution #2625

· One min read
Damian Nadales

High-level summary​

  • Introduced a mempool optimization (#1565).
  • Fixed a bug in the Byron deserialization of Ledger Tables (#1577).
  • Added the Node-to-Node CDDL specifications (#1571).
  • Work has started to extend the Haskell simulator to support adding individual transactions.
  • Added support for taking ledger snapshots at predictable times (#1575).

· One min read
Noon van der Silk

High-level summary​

The team have been highly focused on work supporting the glacier drop; in particular fixing a bug related to replaying a large statefile, and preparing a release that includes that fix (0.22.2). We continue work to improve some observed issues with our resiliance to restarts during processing high volumes of transactions.

What did the team achieve?​

  • Released version 0.22.2
  • Marked release version 0.22.1 as deprecated; do not use, it contains a simple bug that prevents --network <...> from working correctly.
  • Resolved bug with node getting into deadlock while restarting #2089
  • Show a list off "Offline" peers in the TUI #2044
  • Set the content-type for the API server responses #2094
  • Small fix to the documentation #2095
  • Continued to support the glacier drop

What's next?​

  • Focus on improving crash-resiliance #2109
  • Add HTTP endpoint for submitting transaction #2107
  • Continue to focus on supporting the glacier drop