Enable user abortion of file parsing

Enable the user to abort the background parsing of the file.

4 files changed, 33 insertions, 2 deletions

diff --git a/qc_app/parse.py b/qc_app/parse.py
index 1a1b686..b2a0156 100644
--- a/qc_app/parse.py
+++ b/qc_app/parse.py
@@ -76,7 +76,7 @@ def parse_status(job_id: str):
         filename = job.get("filename", "uploaded file")
         errors = jsonpickle.decode(
             job.get("errors", jsonpickle.encode(tuple())))
-        if status == "success":
+        if status == "success" or status == "aborted":
             return redirect(url_for("parse.results", job_id=job_id))
 
         if status == "parse-error":
@@ -107,7 +107,8 @@ def results(job_id: str):
         return render_template(
             "parse_results.html",
             errors=errors,
-            job_name = f"Parsing '{filename}'")
+            job_name = f"Parsing '{filename}'",
+            user_aborted = job.get("user_aborted"))
 
     return render_template("no_such_job.html", job_id=job_id)
 
@@ -129,3 +130,15 @@ def fail(job_id: str):
         return render_template("parse_failure.html", job=job)
 
     return render_template("no_such_job.html", job_id=job_id)
+
+@parsebp.route("/abort", methods=["POST"])
+def abort():
+    job_id = request.form["job_id"]
+
+    with Redis.from_url(app.config["REDIS_URL"], decode_responses=True) as rconn:
+        job = jobs.job(rconn, job_id)
+
+        if job:
+            rconn.hset(name=job_id, key="user_aborted", value=int(True))
+
+    return redirect(url_for("parse.parse_status", job_id=job_id))
diff --git a/qc_app/static/css/styles.css b/qc_app/static/css/styles.css
index a5f0e01..aa6b049 100644
--- a/qc_app/static/css/styles.css
+++ b/qc_app/static/css/styles.css
@@ -30,6 +30,13 @@ fieldset {
     font-weight: bold;
 }
 
+.btn-danger {
+    color: #FEFEFE;
+    border-color: #FF3434;
+    background-color: #FF4545;
+    font-weight: bold;
+}
+
 .alert {
     display: block;
     border-style: solid;
diff --git a/qc_app/templates/job_progress.html b/qc_app/templates/job_progress.html
index accdc1c..acced9b 100644
--- a/qc_app/templates/job_progress.html
+++ b/qc_app/templates/job_progress.html
@@ -18,6 +18,13 @@
 <span>{{"%.2f" | format(progress)}}%</span>
 
 <div>
+  <form action="{{url_for('parse.abort')}}" method="POST">
+    <input type="hidden" name="job_id" value="{{job_id}}" />
+    <input type="submit" value="Abort" class="btn btn-danger" />
+  </form>
+</div>
+
+<div>
   {{errors_display(errors, "No errors found so far", "We have found the following errors so far")}}
 </div>
 
diff --git a/qc_app/templates/parse_results.html b/qc_app/templates/parse_results.html
index 8d39359..358c5e8 100644
--- a/qc_app/templates/parse_results.html
+++ b/qc_app/templates/parse_results.html
@@ -6,6 +6,10 @@
 {%block contents%}
 <h1 class="heading">{{job_name}}: parse results</h2>
 
+{%if user_aborted%}
+<span class="alert-warning">Job aborted by the user</span>
+{%endif%}
+
 {{errors_display(errors, "No errors found in the file", "We found the following errors")}}
 
 {%endblock%}