From 199c248e4d2bc37d21b7b9067373ed74d9fa5d0d Mon Sep 17 00:00:00 2001 From: holgerd77 Date: Thu, 17 May 2018 13:58:08 +0200 Subject: [PATCH] Bumped version to v3.0.0, added CHANGELOG entry --- CHANGELOG.md | 28 ++++++++++++++++++++++++++++ package.json | 2 +- 2 files changed, 29 insertions(+), 1 deletion(-) diff --git a/CHANGELOG.md b/CHANGELOG.md index aa2147b..24a364e 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -6,6 +6,34 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) [Semantic Versioning](http://semver.org/spec/v2.0.0.html). +## [3.0.0] - 2018-05-18 +This release comes with heavy internal changes bringing Geth DB compatibility to the +``ethereumjs-blockchain`` library. For a full list of changes and associated discussion +see PR [#47](https://github.com/ethereumjs/ethereumjs-blockchain/pull/47) +(thanks to @vpulim for this amazing work!). To test iterating through your local Geth +chaindata DB you can run the [example](https://github.com/ethereumjs/ethereumjs-blockchain#example) +in the README file. + +This allows for various new use cases of the library in the areas of testing, simulation or +running actual blockchain data from a Geth node through the VM. The Geth data model used is +not compatible with the old format where chaindata and metadata have been stored separately on two leveldb +instances, so it is not possible to load an old DB with the new library version (if this causes +problems for you get in touch on GitHub or Gitter!). + +Summary of the changes: +- New unified constructor where ``detailsDB`` and ``blockDB`` are replaced by a single ``db`` reference +- Deprecation of the ``getDetails()`` method now returning an empty object +- ``td`` and ``height`` are not stored in the db as meta info but computed as needed +- Block headers and body are stored under two separate keys +- Changes have been made to properly rebuild the chain and number/hash mappings as a result of forks and deletions +- A write-through cache has been added to reduce database reads +- Similar to geth, we now defend against selfish mining vulnerability +- Added many more tests to increase coverage to over 90% +- Updated docs to reflect the API changes +- Updated library dependencies + +[3.0.0]: https://github.com/ethereumjs/ethereumjs-blockchain/compare/v2.1.0...v3.0.0 + ## [2.1.0] - 2017-10-11 - ``Metro-Byzantium`` compatible - Updated ``ethereumjs-block`` dependency (new difficulty formula / difficulty bomb delay) diff --git a/package.json b/package.json index db3ac23..c6166c8 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "ethereumjs-blockchain", - "version": "2.1.0", + "version": "3.0.0", "description": "A module to store and interact with blocks", "main": "index.js", "scripts": {