Work around codecov.io connection failures

azure-pipelines.yml

@@ -116,6 +116,8 @@ jobs:
         tox -e $(coverageToxEnv)
       fi
     displayName: 'Run coverage tests if coverageToxEnv != ""'
+    env:
+      CODECOV_TOKEN: $(MY_CODECOV_TOKEN)
 
   - bash: |
       tox -e $(buildToxEnv)

requirements-dev.txt

@@ -1,4 +1,4 @@
-codecov==2.1.3
+codecov==2.1.7
 coverage==5.1
 flake8==3.7.9
 python-dateutil==2.8.1

tests/coverage/upload_codecov.py

@@ -0,0 +1,19 @@
+#!/bin/env/python
+
+from subprocess import call
+import time
+import os
+
+if __name__ == '__main__':
+    max_tries = 3
+    num_tries = 1
+    cmd = 'codecov --required'
+    rc = call(cmd, shell=True)
+    while rc != 0 and num_tries < max_tries:
+        print("Try #%d/%d failed. Sleeping for 60 seconds and trying again..." % (num_tries, max_tries))
+        time.sleep(60)
+        os.remove(os.path.join(os.getcwd(), "coverage.xml"))
+        rc = call(cmd, shell=True)
+        num_tries += 1
+
+    raise SystemExit(rc)

tox.ini

@@ -66,12 +66,12 @@ commands = {[testenv:build]commands}
 
 # Envs that will only be executed on CI that does coverage reporting
 [testenv:coverage]
-passenv = CI CIRCLECI CIRCLE_*
+passenv = CI CIRCLECI CIRCLE_* CODECOV_TOKEN
 basepython = python3.8
 commands =
     python -m coverage run test.py -u
     coverage report -m
-    codecov
+    - python tests/coverage/upload_codecov.py  # do not report error if codecov upload fails
 
 # Envs that will test installation from a wheel
 [testenv:wheelinstall-py35]