f Don't pin futures

Author: tnull

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
                      beta,
                      # 1.41.1 is MSRV for Rust-Lightning, lightning-invoice, and lightning-persister
                      1.41.1,
-                     # 1.45.2 is MSRV for lightning-net-tokio, lightning-block-sync, and coverage generation
+                     # 1.45.2 is MSRV for lightning-net-tokio, lightning-block-sync, lightning-background-processor, and coverage generation
                      1.45.2,
                      # 1.47.0 will be the MSRV for no-std builds using hashbrown once core2 is updated
                      1.47.0]
@@ -48,7 +48,7 @@ jobs:
           - toolchain: 1.41.1
             build-no-std: false
             test-log-variants: true
-            build-futures: true
+            build-futures: false
           - toolchain: 1.45.2
             build-net-old-tokio: true
             build-net-tokio: true

lightning-background-processor/Cargo.toml

@@ -13,18 +13,14 @@ edition = "2018"
 all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
 
+[features]
+futures = [ "futures-util" ]
+
 [dependencies]
 bitcoin = "0.29.0"
 lightning = { version = "0.0.111", path = "../lightning", features = ["std"] }
 lightning-rapid-gossip-sync = { version = "0.0.111", path = "../lightning-rapid-gossip-sync" }
-futures = { version = "=0.3.17", optional = true }
-futures-core = { version = "=0.3.17", optional = true }
-futures-task = { version = "=0.3.17", optional = true }
-futures-channel = { version = "=0.3.17", optional = true }
-futures-executor = { version = "=0.3.17", optional = true }
-futures-io = { version = "=0.3.17", optional = true }
-futures-sink = { version = "=0.3.17", optional = true }
-futures-util = { version = "=0.3.17", optional = true }
+futures-util = { version = "0.3", default-features = false, features = ["async-await-macro"], optional = true }
 
 [dev-dependencies]
 lightning = { version = "0.0.111", path = "../lightning", features = ["_test_utils"] }

lightning-background-processor/src/lib.rs

@@ -35,7 +35,7 @@ use std::time::{Duration, Instant};
 use std::ops::Deref;
 
 #[cfg(feature = "futures")]
-use futures::{select, future::FutureExt};
+use futures_util::{select_biased, future::FutureExt};
 
 /// `BackgroundProcessor` takes care of tasks that (1) need to happen periodically to keep
 /// Rust-Lightning running properly, and (2) either can or should be run in the background. Its
@@ -414,7 +414,7 @@ where
 	let mut should_continue = true;
 	define_run_body!(persister, event_handler, chain_monitor, channel_manager,
 		gossip_sync, peer_manager, logger, scorer, should_continue, {
-			select! {
+			select_biased! {
 				_ = channel_manager.get_persistable_update_future().fuse() => true,
 				cont = sleeper(Duration::from_millis(100)).fuse() => {
 					should_continue = cont;

lightning-block-sync/Cargo.toml

@@ -20,7 +20,7 @@ rpc-client = [ "serde", "serde_json", "chunked_transfer" ]
 [dependencies]
 bitcoin = "0.29.0"
 lightning = { version = "0.0.111", path = "../lightning" }
-futures = { version = "0.3" }
+futures-util = { version = "0.3", default-features = false }
 tokio = { version = "1.0", features = [ "io-util", "net", "time" ], optional = true }
 serde = { version = "1.0", features = ["derive"], optional = true }
 serde_json = { version = "1.0", optional = true }

lightning-block-sync/src/rest.rs

@@ -7,7 +7,7 @@ use crate::http::{BinaryResponse, HttpEndpoint, HttpClient, JsonResponse};
 use bitcoin::hash_types::BlockHash;
 use bitcoin::hashes::hex::ToHex;
 
-use futures::lock::Mutex;
+use futures_util::lock::Mutex;
 
 use std::convert::TryFrom;
 use std::convert::TryInto;

lightning-block-sync/src/rpc.rs

@@ -7,7 +7,7 @@ use crate::http::{HttpClient, HttpEndpoint, HttpError, JsonResponse};
 use bitcoin::hash_types::BlockHash;
 use bitcoin::hashes::hex::ToHex;
 
-use futures::lock::Mutex;
+use futures_util::lock::Mutex;
 
 use serde_json;