fix all clippy complaints in this branch

compute_tools/src/ro_replica.rs

@@ -1,9 +1,9 @@
-use std::{pin::Pin, str::FromStr, sync::Arc, time::Duration};
+use std::{str::FromStr, sync::Arc, time::Duration};
 
 use anyhow::Context;
 use chrono::Utc;
 use compute_api::spec::PageserverProtocol;
-use futures::{StreamExt, stream::FuturesUnordered};
+use futures::{FutureExt, StreamExt, stream::FuturesUnordered};
 use postgres::SimpleQueryMessage;
 use tokio_util::sync::CancellationToken;
 use tracing::{Instrument, error, info, info_span, instrument, warn};
@@ -163,40 +163,34 @@ async fn attempt(lease_id: String, compute: &Arc<ComputeNode>) -> anyhow::Result
             shard_id=%connect_info.tenant_shard_id.shard_slug(),
             timeline_id=%timeline_id,
         );
-        let logging_wrapper =
-            |fut: Pin<Box<dyn Future<Output = anyhow::Result<Option<chrono::DateTime<Utc>>>>>>| {
-                async move {
-                    // TODO: timeout?
-                    match fut.await {
-                        Ok(Some(v)) => {
-                            info!("lease obtained");
-                            Ok(Some(v))
-                        }
-                        Ok(None) => {
-                            error!("pageserver rejected our request");
-                            Ok(None)
-                        }
-                        Err(err) => {
-                            error!("communication failure: {err:?}");
-                            Err(())
-                        }
+        let logging_wrapper = async |fut| {
+            async move {
+                // TODO: timeout?
+                match fut.await {
+                    Ok(Some(v)) => {
+                        info!("lease obtained");
+                        Ok(Some(v))
+                    }
+                    Ok(None) => {
+                        error!("pageserver rejected our request");
+                        Ok(None)
+                    }
+                    Err(err) => {
+                        error!("communication failure: {err:?}");
+                        Err(())
                     }
                 }
-                .instrument(logging_span)
-            };
+            }
+            .instrument(logging_span)
+            .await
+        };
         let fut = match PageserverProtocol::from_connstring(&connect_info.connstring)? {
-            PageserverProtocol::Libpq => logging_wrapper(Box::pin(attempt_one_libpq(
-                connect_info,
-                timeline_id,
-                lease_id.clone(),
-                lsn,
-            ))),
-            PageserverProtocol::Grpc => logging_wrapper(Box::pin(attempt_one_grpc(
-                connect_info,
-                timeline_id,
-                lease_id.clone(),
-                lsn,
-            ))),
+            PageserverProtocol::Libpq => logging_wrapper(
+                attempt_one_libpq(connect_info, timeline_id, lease_id.clone(), lsn).boxed(),
+            ),
+            PageserverProtocol::Grpc => logging_wrapper(Box::pin(
+                attempt_one_grpc(connect_info, timeline_id, lease_id.clone(), lsn).boxed(),
+            )),
         };
         futs.push(fut);
     }
@@ -280,7 +274,7 @@ async fn attempt_one_grpc(
         tenant_shard_id.tenant_id,
         timeline_id,
         tenant_shard_id.to_index(),
-        auth.map(String::from),
+        auth,
         None,
     )
     .await?;

pageserver/page_api/src/model.rs

@@ -15,7 +15,10 @@
 //! receivers should expect all sorts of junk from senders. This also allows the sender to use e.g.
 //! stream combinators without dealing with errors, and avoids validating the same message twice.
 
-use std::{fmt::Display, time::{Duration, SystemTime, UNIX_EPOCH}};
+use std::{
+    fmt::Display,
+    time::{Duration, SystemTime, UNIX_EPOCH},
+};
 
 use bytes::Bytes;
 use chrono::Utc;
@@ -783,7 +786,7 @@ impl TryFrom<proto::LeaseStandbyHorizonRequest> for LeaseStandbyHorizonRequest {
         if pb.lsn == 0 {
             return Err(ProtocolError::Missing("lsn"));
         }
-        if pb.lease_id.len() == 0 {
+        if pb.lease_id.is_empty() {
             return Err(ProtocolError::Invalid("lease_id", pb.lease_id));
         }
         Ok(Self {
@@ -831,8 +834,9 @@ impl From<LeaseStandbyHorizonResponse> for proto::LeaseStandbyHorizonResponse {
     fn from(response: LeaseStandbyHorizonResponse) -> Self {
         Self {
             expiration: Some(prost_types::Timestamp {
-                seconds: response.expiration.timestamp() as i64,
-                nanos: response.expiration.timestamp_subsec_nanos() as i32,
+                seconds: response.expiration.timestamp(),
+                nanos: i32::try_from(response.expiration.timestamp_subsec_nanos())
+                    .expect("should fit in i32 max"),
             }),
         }
     }

pageserver/src/tenant.rs

@@ -8929,15 +8929,15 @@ mod tests {
                 ],
                 // image layers
                 vec![
-(Lsn(0x10), vec![(key1, test_img("metadata key 1"))]),
-(
-                    Lsn(0x30),
-                    vec![
-                        (key0, test_img("metadata key 0")),
-                        (key3, test_img("metadata key 3")),
-                    ],
-                ),
-],
+                    (Lsn(0x10), vec![(key1, test_img("metadata key 1"))]),
+                    (
+                        Lsn(0x30),
+                        vec![
+                            (key0, test_img("metadata key 0")),
+                            (key3, test_img("metadata key 3")),
+                        ],
+                    ),
+                ],
                 Lsn(0x30),
             )
             .await?;
@@ -9600,7 +9600,7 @@ mod tests {
         let initial_leases = [0x30, 0x50, 0x70];
         let mut expirations = Vec::new();
         initial_leases.iter().enumerate().for_each(|(i, n)| {
-            let lease_id = format!("test_lease_{}", i);
+            let lease_id = format!("test_lease_{i}");
             expirations.push(
                 timeline
                     .lease_standby_horizon(lease_id, Lsn(*n), &ctx)
@@ -9684,9 +9684,9 @@ mod tests {
 
         // Should be able to read at any LSN between any standby_horizon and tip
         let readable_lsns = (legacy.0..=end_lsn.0)
-            .chain(leases.iter().map(|(lsn, _)| (lsn.0..=end_lsn.0)).flatten())
+            .chain(leases.iter().flat_map(|(lsn, _)| (lsn.0..=end_lsn.0)))
             .dedup()
-            .map(|lsn| Lsn(lsn))
+            .map(Lsn)
             .collect_vec();
         for lsn in readable_lsns {
             timeline

pageserver/src/tenant/timeline/standby_horizon.rs

@@ -231,7 +231,7 @@ impl Horizons {
         // Violation of this invariant would constitute a bug in gc:
         // it should
         for (lease_id, lease) in inner.leases_by_id.iter() {
-            if !(lease.lsn >= *applied_gc_cutoff_lsn) {
+            if lease.lsn < *applied_gc_cutoff_lsn {
                 warn!(?lease_id, applied_gc_cutoff_lsn=%*applied_gc_cutoff_lsn, "lease is below the applied gc cutoff");
                 bug = true;
             }
@@ -286,8 +286,8 @@ impl Horizons {
         let inner = self.inner.lock().unwrap();
         inner
             .leases_by_id
-            .iter()
-            .map(|(_, lease)| (lease.lsn, lease.valid_until))
+            .values()
+            .map(|Lease { valid_until, lsn }| (*lsn, *valid_until))
             .collect()
     }
 }