Fix InfluxDB output mode and add CI for it

- Use a backslash to escape the space after the tags
- Add a simple Telegraf config that reproduces syntax errors

See: https://progress.opensuse.org/issues/121582

.github/workflows/tests.yaml

@@ -15,3 +15,7 @@ jobs:
           python -m pip install --upgrade pip
           pip install -r requirements.txt
       - run: pytest -vv
+      - name: Install Telegraf
+        run: sudo apt-get install -y telegraf
+      - name: Test InfluxDB output
+        run: telegraf --test --config slo.conf

backlogger.py

@@ -177,15 +177,15 @@ def render_influxdb(data):
             count = len(result[status]["leadTime"])
             if status == "Resolved":
                 measure = "leadTime"
-                extra = " leadTime={leadTime} cycleTime={cycleTime}".format(
+                extra = ",leadTime={leadTime},cycleTime={cycleTime}".format(
                     leadTime=mean(result[status]["leadTime"]),
                     cycleTime=mean(result[status]["cycleTime"]),
                 )
             else:
                 measure = "slo"
                 extra = ""
             output.append(
-                '{measure},team="{team}",status="{status}",title="{title}" count={count}{extra}'.format(
+                '{measure},team="{team}",status="{status}",title="{title}"\\ count={count}{extra}'.format(
                     measure=measure,
                     team=data["team"],
                     status=status,

slo.conf

@@ -0,0 +1,5 @@
+[[inputs.exec]]
+  commands = [ "env REDMINE_API_KEY=abcdefgah0123456789 ./backlogger.py --output=influxdb" ]
+  interval = "1h"
+  timeout = "10s"
+  data_format = "influx"

tests/test_output.py

@@ -69,7 +69,7 @@ def test_influxdb(self):
         self.assertEqual(
             backlogger.render_influxdb(data),
             [
-                'slo,team="Awesome Team",status="In Progress",title="Workable Backlog" count=2',
-                'leadTime,team="Awesome Team",status="Resolved",title="Workable Backlog" count=1 leadTime=383.2547222222222 cycleTime=48.0',
+                'slo,team="Awesome Team",status="In Progress",title="Workable Backlog"\\ count=2',
+                'leadTime,team="Awesome Team",status="Resolved",title="Workable Backlog"\\ count=1,leadTime=383.2547222222222,cycleTime=48.0',
             ],
         )