b206a985cffaa9b614841219371faa53ba23dfc3 fix: Even more refactoring to code and documentation (志宇)
bea8e5aff4f1e4d61db3970a6efaec86e686dbc3 fix: `TxGraph::missing_blocks` logic (志宇)
db15e03bdce78c6321f906f390b10b3d9e7501b2 fix: improve more docs and more refactoring (志宇)
95312d4d05618b4c464acc0fdff49fb17405ec88 fix: docs and some minor refactoring (志宇)
8bf7a997f70fdffd072fd37e12c385e731728c5a Refactor `debug_assertions` checks for `LocalChain` (志宇)
315e7e0b4b373d7175f21a48ff6480b6e919a2c6 fix: rm duplicate `bdk_tmp_plan` module (志宇)
af705da1a846214f104df8886201a23cfa4b6b74 Add exclusion of example cli `*.db` files in `.gitignore` (志宇)
eabeb6ccb169b32f7b7541c9dc6481693bdeeb8a Implement linked-list `LocalChain` and update chain-src crates/examples (志宇)
Pull request description:
Fixes#997
Replaces #1002
### Description
This PR changes the `LocalChain` implementation to have blocks stored as a linked-list. This allows the data-src thread to hold a shared ref to a single checkpoint and have access to the whole history of checkpoints without cloning or keeping a lock on `LocalChain`.
The APIs of `bdk::Wallet`, `esplora` and `electrum` are also updated to reflect these changes. Note that the `esplora` crate is rewritten to anchor txs in the confirmation block (using the esplora API's tx status block_hash). This guarantees 100% consistency between anchor blocks and their transactions (instead of anchoring txs to the latest tip). `ExploraExt` now has separate methods for updating the `TxGraph` and `LocalChain`.
A new method `TxGraph::missing_blocks` is introduced for finding "floating anchors" of a `TxGraph` update (given a chain).
Additional changes:
* `test_local_chain.rs` is refactored to make test cases easier to write. Additional tests are also added.
* Examples are updated.
* Exclude example-cli `*.db` files in `.gitignore`.
* Rm duplicate `bdk_tmp_plan` module.
### Notes to the reviewers
This is the smallest possible division of #1002 without resulting in PRs that do not compile. Since we have changed the API of `LocalChain`, we also need to change `esplora`, `electrum` crates and examples alongside `bdk::Wallet`.
### Changelog notice
* Implement linked-list `LocalChain`. This allows the data-src thread to hold a shared ref to a single checkpoint and have access to the whole history of checkpoints without cloning or keeping a lock on `LocalChain`.
* Rewrote `esplora` chain-src crate to anchor txs to their confirmation blocks (using esplora API's tx-status `block_hash`).
### 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
#### New Features:
* [x] I've added tests for the new feature
* [x] I've added docs for the new feature
ACKs for top commit:
LLFourn:
ACK b206a985cffaa9b614841219371faa53ba23dfc3
Tree-SHA512: a513eecb4f1aae6a5c06a69854e4492961424312a75a42d74377d363b364e3d52415bc81b4aa3fbc3f369ded19bddd07ab895130ebba288e8a43e9d6186e9fcc
d73669e8fa