services: imports: refine to use SystemTime

* Use standard library to calculate SystemTime and Duration
* exporse results to be accessible in orbtk views

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

advotracker/src/services/imports/allianzdirectcall.rs

@@ -9,6 +9,7 @@ use chrono::{Local, DateTime};
 use locales::t;
 use std::error::Error;
 use std::collections::HashMap;
+use std::time::{Duration, SystemTime};
 use tracing::trace;
 
 //use crate::db::redis;
@@ -23,18 +24,19 @@ pub fn import(p: &mut String, data_list: &mut PolicyDataList,
               policy_numbers: &mut HashMap<usize, PolicyCode>,
               policy_data_count: &mut usize,
               lang: &String)
-          -> Result<usize, Box<dyn Error>> {
+          -> Result<(usize, Duration), Box<dyn Error>> {
     use std::fs::File;
     use std::path::Path;
     use std::ffi::OsStr;
 
     let mut res = t!("csv.import.started", lang);
     let mut state = t!("state.started", lang);
-    let dt_start: DateTime<Local> = Local::now();
+    let time_start = SystemTime::now();
+    let datetime: DateTime<Local> = time_start.into();
 
-    trace!(target: "advotrackerd", process = ?res, state = ?state, date_start = ?dt_start.to_string());
+    trace!(target: "advotrackerd", process = ?res, state = ?state, date_start = ?datetime.to_string());
 
-    // Note: slash syntax also workd on Windows!
+    // Note: slash syntax also works on Windows!
     let path = Path::new(p);
 
     // must be a readable file
@@ -81,12 +83,11 @@ pub fn import(p: &mut String, data_list: &mut PolicyDataList,
 
         count +=1;
         *policy_data_count = count;
-
     };
 
-    let dt_end: DateTime<Local> = Local::now();
-    let duration = dt_end.signed_duration_since(dt_start);
-
+    let time_end = SystemTime::now();
+    let duration  = time_end.duration_since(time_start)
+        .expect("Clock may have gone backwards");
     trace!(target: "advotrackerd", record_count = ?count, duration = ?duration);
 
     // Tests
@@ -105,7 +106,8 @@ pub fn import(p: &mut String, data_list: &mut PolicyDataList,
 
     state = t!("state.finished", lang);
     res = t!("csv.import.finished", lang);
-    trace!(target: "advotrackerd", process = ?res, state = ?state, date_stop = ?dt_end.to_string());
+    let datetime: DateTime<Local> = time_end.into();
+    trace!(target: "advotrackerd", process = ?res, state = ?state, date_stop = ?datetime.to_string());
 
-    Ok(count)
+    Ok((count, duration))
 }