Steve Myers 8ad52f720f
Merge bitcoindevkit/bdk#1267: Simplify Esplora::update_local_chain and add tests
c5afbaa95d7bc699981d6fe7f9964a41b7587d5c ci: update zstd-sys version to work with MSRV 1.63 (Steve Myers)
929b5ddb0c2e0dc7c346c08888201ac54efab84d refactor(esplora): better variable naming and docs (志宇)
216648bcfd2c622890bf7f50fb2eaa4396c42ed1 chore(esplora): Clarify consistency guarantees (LLFourn)
63fa710319f231f7f28d92cb49b0399f3250c9da fix(esplora): reuse returned height instead of zipping (志宇)
6f824cf325c6c882b00742d814be1d72602f05a6 test(esplora): introduce test cases for `update_local_chain` (志宇)
f05e8502e69a051af9869be6ba5ad9a376b25fc2 feat(esplora): greatly simplify `update_local_chain` (志宇)

Pull request description:

  Fixes #1199

  ### Description

  After a second look at the `update_local_chain` implementations, it was clear that they were over complicated. This PR simplifies the `EsploraExt::update_local_chain` method(s) of the `bdk_esplora` crate and adds a whole bunch of tests.

  ### Notes to the reviewers

  The description of #1199 is very brief, however @danielabrozzoni mentioned about potentially-problematic logic with `ASSUME_FINAL_DEPTH`. The logic was indeed convoluted and it did not need to be that way. This PR removes the need for `ASSUME_FINAL_DEPTH`.

  ### Changelog notice

  Fixed
  - Simplified `EsploraExt::update_local_chain` logic.

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

  #### Bugfixes:

  ~* [ ] This pull request breaks the existing API~
  ~* [ ] I've added tests to reproduce the issue which are now passing~ (there are now lots of tests though)
  * [x] I'm linking the issue being fixed by this PR

ACKs for top commit:
  evanlinjin:
    ACK c5afbaa95d7bc699981d6fe7f9964a41b7587d5c
  notmandatory:
    utACK c5afbaa95d7bc699981d6fe7f9964a41b7587d5c

Tree-SHA512: f588493a4643f0f68d3181f27adf91793d4e336be6e853a26289e0916ed83169e1067260b75e627f190842f691ec095e668c0b799ca80e7da2849dd28de32754
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2023-02-13 11:38:26 -06:00
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The Bitcoin Dev Kit

BDK

A modern, lightweight, descriptor-based wallet library written in Rust!

Crate Info MIT or Apache-2.0 Licensed CI Status API Docs Rustc Version 1.63.0+ Chat on Discord

Project Homepage | Documentation

About

The bdk libraries aims to provide well engineered and reviewed components for Bitcoin based applications. It is built upon the excellent rust-bitcoin and rust-miniscript crates.

⚠ The Bitcoin Dev Kit developers are in the process of releasing a v1.0 which is a fundamental re-write of how the library works. See for some background on this project: https://bitcoindevkit.org/blog/road-to-bdk-1/ (ignore the timeline 😁) For a release timeline see the BDK 1.0 project page.

Architecture

The project is split up into several crates in the /crates directory:

  • bdk: Contains the central high level Wallet type that is built from the low-level mechanisms provided by the other components
  • chain: Tools for storing and indexing chain data
  • file_store: A (experimental) persistence backend for storing chain data in a single file.
  • esplora: Extends the esplora-client crate with methods to fetch chain data from an esplora HTTP server in the form that bdk_chain and Wallet can consume.
  • electrum: Extends the electrum-client crate with methods to fetch chain data from an electrum server in the form that bdk_chain and Wallet can consume.

Fully working examples of how to use these components are in /example-crates:

  • example_cli: Library used by the example_* crates. Provides utilities for syncing, showing the balance, generating addresses and creating transactions without using the bdk Wallet.
  • example_electrum: A command line Bitcoin wallet application built on top of example_cli and the electrum crate. It shows the power of the bdk tools (chain + file_store + electrum), without depending on the main bdk library.
  • example_esplora: A command line Bitcoin wallet application built on top of example_cli and the esplora crate. It shows the power of the bdk tools (chain + file_store + esplora), without depending on the main bdk library.
  • example_bitcoind_rpc_polling: A command line Bitcoin wallet application built on top of example_cli and the bitcoind_rpc crate. It shows the power of the bdk tools (chain + file_store + bitcoind_rpc), without depending on the main bdk library.
  • wallet_esplora_blocking: Uses the Wallet to sync and spend using the Esplora blocking interface.
  • wallet_esplora_async: Uses the Wallet to sync and spend using the Esplora asynchronous interface.
  • wallet_electrum: Uses the Wallet to sync and spend using Electrum.

Minimum Supported Rust Version (MSRV)

This library should compile with any combination of features with Rust 1.63.0.

To build with the MSRV you will need to pin dependencies as follows:

# zip 0.6.3 has MSRV 1.64.0
cargo update -p zip --precise "0.6.2"
# time 0.3.21 has MSRV 1.65.0
cargo update -p time --precise "0.3.20"
# jobserver 0.1.27 has MSRV 1.66.0
cargo update -p jobserver --precise "0.1.26"
# home 0.5.9 has MSRV 1.70.0
cargo update -p home --precise "0.5.5"

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

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