From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 7 Aug 2021 16:51:45 +0000 (+0100)
Subject: client: Improve startup error handling
X-Git-Tag: hippotat/1.0.0~281
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=0e590dec7b00dbdd48e5bbc2e0dbf44a4d44a52c;p=hippotat.git

client: Improve startup error handling

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/src/bin/client.rs b/src/bin/client.rs
index 426f974..57709fd 100644
--- a/src/bin/client.rs
+++ b/src/bin/client.rs
@@ -335,14 +335,21 @@ async fn run_client<C:HCC>(
 }
 
 #[tokio::main]
-async fn main() -> Result<(), AE> {
-  dedup_eyre_setup()?;
-  let opts = Opts::from_args();
+async fn main() {
+  let (ics,) =(||{
+    dedup_eyre_setup()?;
+    let opts = Opts::from_args();
 
-  let ics = config::read(&opts.config, LinkEnd::Client)?;
-  if ics.is_empty() { throw!(anyhow!("no associations with server(s)")); }
+    let ics = config::read(&opts.config, LinkEnd::Client)?;
+    if ics.is_empty() { throw!(anyhow!("no associations with server(s)")); }
 
-  opts.log.log_init()?;
+    opts.log.log_init()?;
+
+    Ok::<_,AE>((ics,))
+  })().unwrap_or_else(|e| {
+    eprintln!("hippotat: startup error: {}", &e);
+    process::exit(8);
+  });
 
   let https = HttpsConnector::new();
   let hclient = hyper::Client::builder().build::<_, hyper::Body>(https);