split out log-ingest modules to their own crate

Cargo.lock

@@ -1764,7 +1764,6 @@ name = "signal-gateway-bin"
 version = "0.1.0"
 dependencies = [
  "async-trait",
- "chrono",
  "conf",
  "conf-extra",
  "dotenvy",
@@ -1775,7 +1774,7 @@ dependencies = [
  "serde_json",
  "signal-gateway",
  "signal-gateway-app-code",
- "syslog_rfc5424",
+ "signal-gateway-log-ingest",
  "tokio",
  "tokio-util",
  "toml",
@@ -1784,6 +1783,20 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "signal-gateway-log-ingest"
+version = "0.1.0"
+dependencies = [
+ "chrono",
+ "conf",
+ "serde",
+ "serde_json",
+ "signal-gateway",
+ "syslog_rfc5424",
+ "tokio",
+ "tracing",
+]
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.4.7"

Cargo.toml

@@ -5,6 +5,7 @@ members = [
     "signal-gateway",
     "signal-gateway-app-code",
     "signal-gateway-bin",
+    "signal-gateway-log-ingest",
 ]
 
 [workspace.package]

signal-gateway-bin/Cargo.toml

@@ -18,9 +18,9 @@ rustls-tls = ["signal-gateway/rustls-tls"]
 [dependencies]
 signal-gateway = { path = "../signal-gateway" }
 signal-gateway-app-code = { path = "../signal-gateway-app-code" }
+signal-gateway-log-ingest = { path = "../signal-gateway-log-ingest" }
 
 async-trait = { workspace = true }
-chrono = { workspace = true }
 conf = { workspace = true }
 conf-extra = { workspace = true }
 dotenvy = { workspace = true }
@@ -30,7 +30,6 @@ reqwest = { workspace = true }
 url = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
-syslog_rfc5424 = { workspace = true }
 toml = { workspace = true }
 tokio = { workspace = true, features = ["rt-multi-thread", "signal"] }
 tokio-util = { workspace = true }

signal-gateway-bin/src/main.rs

@@ -19,11 +19,7 @@ use admin_http::AdminHttpConfig;
 mod app_code;
 use app_code::AppCodeConfigExt;
 
-mod syslog;
-use syslog::SyslogConfig;
-
-pub mod json;
-use json::JsonConfig;
+use signal_gateway_log_ingest::{JsonConfig, SyslogConfig};
 
 /// Top-level configuration for signal-gateway.
 #[derive(Conf, Debug)]
@@ -48,7 +44,7 @@ pub struct Config {
     #[conf(flatten, prefix)]
     admin_http: Option<AdminHttpConfig>,
     /// Application source code configurations for Claude tools.
-    #[conf(long, env, value_parser = serde_json::from_str)]
+    #[conf(long, env, value_parser = serde_json::from_str, default, default_help_str = "[]")]
     app_code: Vec<AppCodeConfigExt>,
     #[conf(flatten, serde(flatten))]
     gateway: GatewayConfig,

signal-gateway-log-ingest/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "signal-gateway-log-ingest"
+version = "0.1.0"
+edition.workspace = true
+
+[lints]
+workspace = true
+
+[dependencies]
+signal-gateway = { path = "../signal-gateway" }
+
+chrono = { workspace = true }
+conf = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+syslog_rfc5424 = { workspace = true }
+tokio = { workspace = true }
+tracing = { workspace = true }

signal-gateway-log-ingest/src/lib.rs

@@ -0,0 +1,11 @@
+//! Log ingestion modules for signal-gateway.
+//!
+//! This crate provides listeners for receiving log messages in various formats:
+//! - JSON (logstash-compatible) over UDP and TCP
+//! - Syslog (RFC 5424) over UDP and TCP
+
+pub mod json;
+pub mod syslog;
+
+pub use json::JsonConfig;
+pub use syslog::SyslogConfig;

signal-gateway/src/claude/worker.rs

@@ -247,9 +247,7 @@ impl ClaudeWorker {
         let after_chars = self.message_buffer_chars();
         warn!(
             "Compaction rate-limited: dropped {} oldest messages ({} -> {} chars)",
-            dropped,
-            before_chars,
-            after_chars
+            dropped, before_chars, after_chars
         );
     }