Drop config path as CLI arg

Author: davidsteiner

Cargo.lock

@@ -12,7 +12,6 @@ hotfix-message = { path = "../../crates/hotfix-message" }
 
 anyhow.workspace = true
 async-trait.workspace = true
-clap = { workspace = true, features = ["derive"] }
 tokio = { workspace = true, features = ["full"] }
 tracing.workspace = true
 tracing-subscriber = { workspace = true, features = ["env-filter"] }

examples/custom-fields/Cargo.toml

@@ -44,7 +44,7 @@ docker compose -f example.compose.yml up --build dummy-executor
 In another, from the repo root, run the example:
 
 ```shell
-cargo run -p custom-fields -- --config examples/custom-fields/config/test-config.toml
+cargo run -p custom-fields
 ```
 
 Expected log output:

examples/custom-fields/README.md

@@ -6,7 +6,6 @@ use std::sync::Arc;
 use std::time::Duration;
 
 use anyhow::{Context, Result, anyhow};
-use clap::Parser;
 use hotfix::config::Config;
 use hotfix::field_types::Timestamp;
 use hotfix::initiator::Initiator;
@@ -19,27 +18,19 @@ use tracing_subscriber::EnvFilter;
 use crate::application::TestApplication;
 use crate::messages::{ExecReportSummary, NewOrderSingle, OutboundMsg};
 
+const CONFIG_PATH: &str = "examples/custom-fields/config/test-config.toml";
 const LOGON_TIMEOUT: Duration = Duration::from_secs(10);
 const FILL_TIMEOUT: Duration = Duration::from_secs(10);
 const STRATEGY_ID: i32 = 42;
 const CL_ORD_ID: &str = "demo-1";
 
-#[derive(Parser, Debug)]
-#[command(author, version, about)]
-struct Args {
-    #[arg(short, long)]
-    config: String,
-}
-
 #[tokio::main]
 async fn main() -> Result<()> {
-    let args = Args::parse();
-
     tracing_subscriber::fmt()
         .with_env_filter(EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info")))
         .init();
 
-    let mut config = Config::load_from_path(&args.config)
+    let mut config = Config::load_from_path(CONFIG_PATH)
         .context("failed to load config")?;
     let session_config = config
         .sessions