Add an error display to the progress status report

Enable the progress status page to show all the errors found at any
point during the processing of the file.

1 files changed, 15 insertions, 8 deletions

diff --git a/scripts/worker.py b/scripts/worker.py
index f4d5b6b..6fab9f9 100644
--- a/scripts/worker.py
+++ b/scripts/worker.py
@@ -48,6 +48,12 @@ def process_cli_arguments():
 
     return cli_args_valid(parser.parse_args())
 
+def stream_error(redis_conn, job_id, error):
+    errors = jsonpickle.decode(
+        redis_conn.hget(job_id, key="errors") or jsonpickle.encode(tuple()))
+    redis_conn.hset(
+        job_id, key="errors", value=jsonpickle.encode(errors + (error,)))
+
 def main():
     args = process_cli_arguments()
     if args is None:
@@ -71,15 +77,16 @@ def main():
         redis_conn.hset(
             name=args.job_id, key="message", value="Collecting errors")
 
-        if count > 0:
-            errors = take(
-                collect_errors(filepath, filetype, strains, progress_indicator),
-                count)
-        else:
-            errors = collect_errors(filepath, filetype, strains, progress_indicator)
+        error_count = 0
+        for error in collect_errors(
+                filepath, filetype, strains, progress_indicator):
+            stream_error(redis_conn, args.job_id, error)
+
+            if count > 0:
+                error_count = error_count + 1
+                if error_count >= count:
+                    break
 
-        redis_conn.hset(
-            name=args.job_id, key="errors", value=jsonpickle.encode(errors))
         redis_conn.hset(name=args.job_id, key="status", value="success")
 
     return 0