ci: Add retry loop to 'cabal update'

2 files changed, 51 insertions, 1 deletions

diff --git a/scripts/ci/retry.sh b/scripts/ci/retry.sh
new file mode 100755
index 0000000..285648e
--- /dev/null
+++ b/scripts/ci/retry.sh
@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+# MIT LICENSE
+#
+# Copyright (c) 2016 Travis CI GmbH <contact@travis-ci.org>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+#
+# Copied from github.com/travis-ci/travis-build and modified to pass shellcheck.
+# Copied from https://github.com/cockroachdb/cockroach/blob/b4b7412d1c899a7488a9839eb4e01a616e4de135/scripts/travis_retry.sh and modified slightly
+
+retry() {
+  local result=0
+  local count=1
+  while [ $count -le 3 ]; do
+    [ $result -ne 0 ] && {
+      echo -e "\n${ANSI_RED}The command \"$*\" failed. Retrying, $count of 3.${ANSI_RESET}\n" >&2
+    }
+    "$@"
+    result=$?
+    [ $result -eq 0 ] && break
+    count=$((count + 1))
+    sleep 10
+  done
+
+  [ $count -gt 3 ] && {
+    echo -e "\n${ANSI_RED}The command \"$*\" failed 3 times.${ANSI_RESET}\n" >&2
+  }
+
+  return $result
+}
+
+retry "$@"
diff --git a/scripts/ci/steps/10-dependencies.sh b/scripts/ci/steps/10-dependencies.sh
index 290cce2..c718421 100644
--- a/scripts/ci/steps/10-dependencies.sh
+++ b/scripts/ci/steps/10-dependencies.sh
@@ -1,3 +1,3 @@
-cabal update
+"$CI_SCRIPTS_DIR"/retry.sh  cabal update
 cabal --sandbox-config="$sandbox_config" sandbox init --sandbox="$sandbox"
 cabal --sandbox-config="$sandbox_config" install --only-dependencies