refactor: misc clippy suggestions

src/close.rs

@@ -23,10 +23,10 @@ pub struct Close {
 impl From<CloseCmd> for Result<Close> {
     fn from(cc: CloseCmd) -> Result<Close> {
         // ensure command is correct
-        if cc.cmd != "CLOSE" {
-            Err(Error::CommandUnknownError)
-        } else {
+        if cc.cmd == "CLOSE" {
             Ok(Close { id: cc.id })
+        } else {
+            Err(Error::CommandUnknownError)
         }
     }
 }

src/config.rs

@@ -1,6 +1,6 @@
 //! Configuration file and settings management
 use config::{Config, ConfigError, File};
-use log::*;
+use log::warn;
 use serde::{Deserialize, Serialize};
 use std::time::Duration;
 
@@ -97,28 +97,36 @@ impl VerifiedUsers {
         self.verify_update_frequency_duration = self.verify_update_duration();
     }
 
+    #[must_use]
     pub fn is_enabled(&self) -> bool {
         self.mode == VerifiedUsersMode::Enabled
     }
 
+    #[must_use]
     pub fn is_active(&self) -> bool {
         self.mode == VerifiedUsersMode::Enabled || self.mode == VerifiedUsersMode::Passive
     }
 
+    #[must_use]
     pub fn is_passive(&self) -> bool {
         self.mode == VerifiedUsersMode::Passive
     }
 
+    #[must_use]
     pub fn verify_expiration_duration(&self) -> Option<Duration> {
         self.verify_expiration
             .as_ref()
             .and_then(|x| parse_duration::parse(x).ok())
     }
+
+    #[must_use]
     pub fn verify_update_duration(&self) -> Option<Duration> {
         self.verify_update_frequency
             .as_ref()
             .and_then(|x| parse_duration::parse(x).ok())
     }
+
+    #[must_use]
     pub fn is_valid(&self) -> bool {
         self.verify_expiration_duration().is_some() && self.verify_update_duration().is_some()
     }
@@ -139,6 +147,7 @@ pub struct Settings {
 }
 
 impl Settings {
+    #[must_use]
     pub fn new() -> Self {
         let default_settings = Self::default();
         // attempt to construct settings with file
@@ -162,16 +171,17 @@ impl Settings {
             .build()?;
         let mut settings: Settings = config.try_deserialize()?;
         // ensure connection pool size is logical
-        if settings.database.min_conn > settings.database.max_conn {
-            panic!(
-                "Database min_conn setting ({}) cannot exceed max_conn ({})",
-                settings.database.min_conn, settings.database.max_conn
-            );
-        }
+        assert!(
+            settings.database.min_conn <= settings.database.max_conn,
+            "Database min_conn setting ({}) cannot exceed max_conn ({})",
+            settings.database.min_conn,
+            settings.database.max_conn
+        );
         // ensure durations parse
-        if !settings.verified_users.is_valid() {
-            panic!("VerifiedUsers time settings could not be parsed");
-        }
+        assert!(
+            settings.verified_users.is_valid(),
+            "VerifiedUsers time settings could not be parsed"
+        );
         // initialize durations for verified users
         settings.verified_users.init();
         Ok(settings)

src/conn.rs

@@ -5,7 +5,7 @@ use crate::error::Result;
 use crate::event::Event;
 
 use crate::subscription::Subscription;
-use log::*;
+use log::{debug, info};
 use std::collections::HashMap;
 use uuid::Uuid;
 
@@ -30,6 +30,7 @@ impl Default for ClientConn {
 
 impl ClientConn {
     /// Create a new, empty connection state.
+    #[must_use]
     pub fn new() -> Self {
         let client_id = Uuid::new_v4();
         ClientConn {
@@ -41,14 +42,16 @@ impl ClientConn {
 
     /// Get a short prefix of the client's unique identifier, suitable
     /// for logging.
+    #[must_use]
     pub fn get_client_prefix(&self) -> String {
         self.client_id.to_string().chars().take(8).collect()
     }
 
     /// Find all matching subscriptions.
+    #[must_use]
     pub fn get_matching_subscriptions(&self, e: &Event) -> Vec<&str> {
         let mut v: Vec<&str> = vec![];
-        for (id, sub) in self.subscriptions.iter() {
+        for (id, sub) in &self.subscriptions {
             if sub.interested_in_event(e) {
                 v.push(id);
             }

src/event.rs

@@ -130,8 +130,8 @@ impl Event {
             // ensure a vector exists for this tag
             idx.entry(tagnamechar).or_insert_with(HashSet::new);
             // get the tag vec and insert entry
-            let tidx = idx.get_mut(&tagnamechar).expect("could not get tag vector");
-            tidx.insert(tagval.clone());
+            let idx_tag_vec = idx.get_mut(&tagnamechar).expect("could not get tag vector");
+            idx_tag_vec.insert(tagval.clone());
         }
         // save the tag structure
         self.tagidx = Some(idx);

src/hexrange.rs

@@ -60,11 +60,10 @@ pub fn hex_range(s: &str) -> Option<HexSearch> {
                 upper[byte_len] = b + 16; // bump up the first character in this byte
                                           // increment done, stop iterating through the vec
                 break;
-            } else {
-                // if it is 'f', reset the byte to 0 and do a carry
-                // reset and carry
-                upper[byte_len] = 0;
             }
+            // if it is 'f', reset the byte to 0 and do a carry
+            // reset and carry
+            upper[byte_len] = 0;
             // done with odd logic, so don't repeat this
             odd = false;
         } else {

src/nip05.rs

@@ -249,9 +249,9 @@ impl Verifier {
         // HTTP request with timeout
         match tokio::time::timeout(Duration::from_secs(5), response_fut).await {
             Ok(response_res) => {
-                let response = response_res?;
                 // limit size of verification document to 1MB.
                 const MAX_ALLOWED_RESPONSE_SIZE: u64 = 1024 * 1024;
+                let response = response_res?;
                 // determine content length from response
                 let response_content_length = match response.body().size_hint().upper() {
                     Some(v) => v,
@@ -267,12 +267,11 @@ impl Verifier {
                         let body_matches = body_contains_user(&nip.local, pubkey, body_bytes)?;
                         if body_matches {
                             return Ok(UserWebVerificationStatus::Verified);
-                        } else {
-                            // successful response, parsed as a nip-05
-                            // document, but this name/pubkey was not
-                            // present.
-                            return Ok(UserWebVerificationStatus::Unverified);
                         }
+                        // successful response, parsed as a nip-05
+                        // document, but this name/pubkey was not
+                        // present.
+                        return Ok(UserWebVerificationStatus::Unverified);
                     }
                 } else {
                     info!(

src/server.rs

@@ -484,7 +484,7 @@ async fn nostr_server(
                 make_notice_message("binary messages are not accepted")).await.ok();
                         continue;
                     },
-                    Some(Ok(Message::Ping(_))) | Some(Ok(Message::Pong(_))) => {
+                    Some(Ok(Message::Ping(_) | Message::Pong(_))) => {
                         // get a ping/pong, ignore.  tungstenite will
                         // send responses automatically.
                         continue;
@@ -496,10 +496,9 @@ async fn nostr_server(
                         continue;
             },
                     None |
-                    Some(Ok(Message::Close(_))) |
-                    Some(Err(WsError::AlreadyClosed)) |
-                    Some(Err(WsError::ConnectionClosed)) |
-                    Some(Err(WsError::Protocol(tungstenite::error::ProtocolError::ResetWithoutClosingHandshake)))
+            Some(Ok(Message::Close(_)) |
+             Err(WsError::AlreadyClosed | WsError::ConnectionClosed |
+                 WsError::Protocol(tungstenite::error::ProtocolError::ResetWithoutClosingHandshake)))
                         => {
                         debug!("websocket close from client: {:?}",cid);
                         break;