Otherwise users of the macro must depend on `bitcoin` and `miniscript`
directly, which defeats the point of re-exporting these crates in the
first place.
In an effort to reduce the build times of `rocksdb` we can set
`default-features` to false.
Please note, the build speed up is minimil
With default features:
```
cargo check --features compact_filters 890.91s user 47.62s system 352% cpu 4:26.55 total
```
Without default features:
```
cargo check --features compact_filters 827.07s user 47.63s system 352% cpu 4:08.39 total
```
Enable `snappy` since it seems like this is the current default compression
algorithm, therefore this patch (hopefully) makes no changes to the usage of the
`rocksdb` library in `bdk`. From the `rocksdb` code:
```
/// Sets the compression algorithm that will be used for compressing blocks.
///
/// Default: `DBCompressionType::Snappy` (`DBCompressionType::None` if
/// snappy feature is not enabled).
///
/// # Examples
///
/// ```
/// use rocksdb::{Options, DBCompressionType};
///
/// let mut opts = Options::default();
/// opts.set_compression_type(DBCompressionType::Snappy);
/// ```
pub fn set_compression_type(&mut self, t: DBCompressionType) {
....
```
Currently we have duplicate code for converting the fee estimate we get
back from esplora into a fee rate. This logic can be moved to a separate
function and live in the `esplora` module.
Our features are a bit convoluted, most annoyingly we cannot build with
`--all-features`. However we can make life for users a little easier.
Explicitly we want users to be able to:
- Use async-interface/WASM without using esplora (to implement their own blockchain)
- Use esplora in an ergonomic manner
Currently using esplora requires either reqwest or ureq. Instead of
making the user add all the features manually we can add features that
add the required feature sets, this makes it easier for users to
understand what is required and also makes usage easier.
With this patch applied we can do
- `cargo check --no-default-features --features=use-esplora-reqwest`
- `cargo check --no-default-features --features=use-esplora-ureq`
- `cargo check --features=use-esplora-ureq`
- `cargo check --no-default-features --features=async-trait`
The `Blockchain` implementation for connecting to an Esplora instance is
currently based on `reqwest`. Some users may not wish to use reqwest.
`ureq` is a simple HTTP client (no async) that is useful when `reqwest`
is not suitable.
- Move `esplora.rs` -> `esplora/reqwest.rs`
- Add an implementation based on the `reqwest` esplora code but using `ureq`
- Add feature flags and conditional includes to re-export everything to
the `esplora` module so we don't effect the rest of the code base.
- Remove the forced dependency on `tokio`.
- Make esplora independent of async-interface
- Depend on local version of macros crate
