ci: robustify network-related operations

Reduce false positives by wrapping network-related operations into a loop.

* ci/install-dependencies.sh (retry_if_failed): New function.
Use it to invoke apt-get update, apt-get install, git clone,
add-apt-repository, and pip install.

diff --git a/ci/install-dependencies.sh b/ci/install-dependencies.sh
index 1c5d5c915e4698c7e8586a3901dcc75620241494..f510772c0db91bb3e6ad3f04713822fdd967acf0 100755 (executable)
--- a/ci/install-dependencies.sh
+++ b/ci/install-dependencies.sh
@@ -3,14 +3,23 @@
 type sudo >/dev/null 2>&1 && sudo=sudo || sudo=
 common_packages='autoconf automake faketime file gawk gcc-multilib git gzip libbluetooth-dev make xz-utils'
 
+retry_if_failed()
+{
+       for i in `seq 0 99`; do
+               "$@" && i= && break || sleep 1
+       done
+       [ -z "$i" ]
+}
+
 updated=
 apt_get_install()
 {
        [ -n "$updated" ] || {
-               $sudo apt-get -qq update
+               retry_if_failed $sudo apt-get -qq update
                updated=1
        }
-       $sudo apt-get -qq --no-install-suggests --no-install-recommends \
+       retry_if_failed $sudo \
+               apt-get -qq --no-install-suggests --no-install-recommends \
                install -y "$@"
 }
 
@@ -36,7 +45,8 @@ clone_repo()
                        ;;
        esac
 
-       git clone --depth=1 ${branch:+--branch $branch} "$src" "$dst"
+       retry_if_failed \
+               git clone --depth=1 ${branch:+--branch $branch} "$src" "$dst"
 }
 
 case "$KHEADERS" in
@@ -57,7 +67,8 @@ case "$CC" in
                apt_get_install $common_packages
                ;;
        gcc-*)
-               $sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+               retry_if_failed \
+                       $sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
                apt_get_install $common_packages "$CC"-multilib
                ;;
        clang*)
@@ -103,7 +114,8 @@ esac
 case "${CHECK-}" in
        coverage)
                apt_get_install lcov
-               pip install --user codecov
+               retry_if_failed \
+                       pip install --user codecov
                ;;
        valgrind)
                apt_get_install valgrind