don't create messages on zero-length or non-200

src/vocodes_api.rs

@@ -1,14 +1,17 @@
+use anyhow::Result as AnyhowResult;
+use anyhow::bail;
 use hyper::Body;
 use hyper::Client as HyperClient;
 use hyper::Request;
 use hyper_tls::HttpsConnector;
+use log::{error, debug, info, warn};
 
 const VOCODES_SPEAK_ENDPOINT : &'static str = "http://mumble.stream/speak";
 
-pub async fn fetch(text: &str, speaker: &str) -> Result<Vec<u8>, Box<dyn std::error::Error + Send + Sync>> {
+pub async fn fetch(text: &str, speaker: &str) -> AnyhowResult<Vec<u8>> {
   let mut request = format!("{{\"speaker\": \"{}\", \"text\": \"{}\"}}", speaker, text);
 
-  println!("Req: {}", request);
+  debug!("Req: {}", request);
 
   let https = HttpsConnector::new();
   let client = HyperClient::builder()
@@ -25,12 +28,20 @@ pub async fn fetch(text: &str, speaker: &str) -> Result<Vec<u8>, Box<dyn std::er
 
   let resp = client.request(req).await?;
 
-  println!("Status: {}", resp.status());
+  info!("Vocodes Response Status: {}", resp.status());
+
+  if resp.status() != 200 {
+    bail!("The response code wasn't 200.");
+  }
 
   let bytes = hyper::body::to_bytes(resp.into_body()).await?;
   let result = bytes.to_vec();
 
-  println!("Length: {}", result.len());
+  if result.len() == 0 {
+    bail!("The response body has zero length.");
+  }
+
+  info!("Vocodes Response Length: {}", result.len());
 
   Ok(result)
 }