install, provision: Treat all nonzero exit codes as failure, not just 1.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>

docs/Makefile

@@ -8,7 +8,7 @@ PAPER         =
 BUILDDIR      = _build
 
 # User-friendly check for sphinx-build
-ifeq ($(shell which $(SPHINXBUILD) >/dev/null 2>&1; echo $$?), 1)
+ifneq ($(shell which $(SPHINXBUILD) >/dev/null 2>&1; echo $$?), 0)
 $(error The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed, then set the SPHINXBUILD environment variable to point to the full path of the '$(SPHINXBUILD)' executable. Alternatively you can add the directory with the executable to your PATH. If you don't have Sphinx installed, grab it from http://sphinx-doc.org/)
 endif
 

scripts/setup/install

@@ -15,13 +15,13 @@ mkdir -p /var/log/zulip
 "$(dirname "$(dirname "$0")")/lib/install" "$@" 2>&1 | tee -a /var/log/zulip/install.log
 failed=${PIPESTATUS[0]}
 
-if [ "$failed" = 1 ]; then
+if [ "$failed" -ne 0 ]; then
     echo -e '\033[0;31m'
-    echo "Zulip installation failed!"
+    echo "Zulip installation failed (exit code $failed)!"
     echo
     echo -n "The install process is designed to be idempotent, so you can retry "
     echo -n "after resolving whatever issue caused the failure (there should be a traceback above). "
     echo -n "A log of this installation is available in /var/log/zulip/install.log"
     echo -e '\033[0m'
-    exit 1
+    exit "$failed"
 fi

tools/ci/setup-backend

@@ -6,7 +6,13 @@ set -x
 # Provisioning may fail due to many issues but most of the times a network
 # connection issue is the reason. So we are going to retry entire provisioning
 # once again if that fixes our problem.
-if ! tools/provision; then
+tools/provision || {
+    ret=$?
+    if [ "$ret" = 1 ]; then
         echo "\`provision\`: Something went wrong with the provisioning, might be a network issue, Retrying to provision..."
         tools/provision
-fi
+    else
+        echo "\`provision\`: Something REALLY BAD went wrong with the provisioning, not retrying."
+        exit "$ret"
+    fi
+}

tools/ci/setup-production

@@ -29,10 +29,16 @@ sudo rm -f /etc/apt/sources.list.d/mongodb*.list
 # Provisioning may fail due to many issues but most of the times a network
 # connection issue is the reason. So we are going to retry entire provisioning
 # once again if that fixes our problem.
-if ! tools/provision --production-travis; then
+tools/provision --production-travis || {
+    ret=$?
+    if [ "$ret" = 1 ]; then
         echo "\`provision\`: Something went wrong with the provisioning, might be a network issue, Retrying to provision..."
         tools/provision --production-travis
-fi
+    else
+        echo "\`provision\`: Something REALLY BAD went wrong with the provisioning, not retrying."
+        exit "$ret"
+    fi
+}
 
 cp -a tools/ci/success-http-headers.txt ~/
 source tools/ci/activate-venv

tools/provision

@@ -28,16 +28,16 @@ export PYTHONUNBUFFERED=1
 ./lib/provision.py "$@" 2>&1 | tee -a "$LOG_PATH"
 failed=${PIPESTATUS[0]}
 
-if [ "$failed" = 1 ]; then
+if [ "$failed" -ne 0 ]; then
     echo -e "$FAIL"
-    echo "Provisioning failed!"
+    echo "Provisioning failed (exit code $failed)!"
     echo
     echo "* Look at the traceback(s) above to find more about the errors."
     echo "* Resolve the errors or get help on chat."
     echo "* If you can fix this yourself, you can re-run tools/provision at any time."
     echo "* Logs are here: zulip/var/log/provision.log"
     echo -e "$ENDC"
-    exit 1
+    exit "$failed"
 elif [ "$VIRTUAL_ENV" != "/srv/zulip-py3-venv" ] && [ -z "${TRAVIS}${SKIP_VENV_SHELL_WARNING}" ]; then
     echo -e "$WARNING"
     echo "WARNING: This shell does not have the Zulip Python 3 virtualenv activated."