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#!/usr/bin/env bats -*- bats -*-
#
# tests for podman healthcheck
#
#
load helpers
# Helper function: run 'podman inspect' and check various given fields
function _check_health {
local testname="$1"
local tests="$2"
run_podman inspect --format "{{json .State.Healthcheck}}" healthcheck_c
parse_table "$tests" | while read field expect;do
actual=$(jq ".$field" <<<"$output")
is "$actual" "$expect" "$testname - .State.Healthcheck.$field"
done
}
@test "podman healthcheck" {
_build_health_check_image healthcheck_i
# Run that healthcheck image.
run_podman run -d --name healthcheck_c \
--health-cmd /healthcheck \
--health-interval 1s \
--health-retries 3 \
healthcheck_i
run_podman inspect healthcheck_c --format "{{.Config.HealthcheckOnFailureAction}}"
is "$output" "none" "default on-failure action is none"
# We can't check for 'starting' because a 1-second interval is too
# short; it could run healthcheck before we get to our first check.
#
# So, just force a healthcheck run, then confirm that it's running.
run_podman healthcheck run healthcheck_c
is "$output" "" "output from 'podman healthcheck run'"
_check_health "All healthy" "
Status | \"healthy\"
FailingStreak | 0
Log[-1].ExitCode | 0
Log[-1].Output | \"Life is Good on stdout\\\nLife is Good on stderr\"
"
# Force a failure
run_podman exec healthcheck_c touch /uh-oh
sleep 2
_check_health "First failure" "
Status | \"healthy\"
FailingStreak | [123]
Log[-1].ExitCode | 1
Log[-1].Output | \"Uh-oh on stdout!\\\nUh-oh on stderr!\"
"
# After three successive failures, container should no longer be healthy
sleep 5
_check_health "Three or more failures" "
Status | \"unhealthy\"
FailingStreak | [3456]
Log[-1].ExitCode | 1
Log[-1].Output | \"Uh-oh on stdout!\\\nUh-oh on stderr!\"
"
# healthcheck should now fail, with exit status 1 and 'unhealthy' output
run_podman 1 healthcheck run healthcheck_c
is "$output" "unhealthy" "output from 'podman healthcheck run'"
# Clean up
run_podman rm -t 0 -f healthcheck_c
run_podman rmi healthcheck_i
}
@test "podman healthcheck --health-on-failure" {
run_podman 125 create --health-on-failure=kill $IMAGE
is "$output" "Error: cannot set on-failure action to kill without a health check"
ctr="healthcheck_c"
img="healthcheck_i"
for policy in none kill restart stop;do
if [[ $policy == "none" ]];then
# Do not remove the /uh-oh file for `none` as we want to
# demonstrate that no action was taken
_build_health_check_image $img
else
_build_health_check_image $img cleanfile
fi
# Run that healthcheck image.
run_podman run -d --name $ctr \
--health-cmd /healthcheck \
--health-on-failure=$policy \
$img
# healthcheck should succeed
run_podman healthcheck run $ctr
# Now cause the healthcheck to fail
run_podman exec $ctr touch /uh-oh
# healthcheck should now fail, with exit status 1 and 'unhealthy' output
run_podman 1 healthcheck run $ctr
is "$output" "unhealthy" "output from 'podman healthcheck run'"
run_podman inspect $ctr --format "{{.State.Status}} {{.Config.HealthcheckOnFailureAction}}"
if [[ $policy == "restart" ]];then
# Container has been restarted and health check works again
is "$output" "running $policy" "container has been restarted"
run_podman healthcheck run $ctr
elif [[ $policy == "none" ]];then
# Container is still running and health check still broken
is "$output" "running $policy" "container continued running"
run_podman 1 healthcheck run $ctr
is "$output" "unhealthy" "output from 'podman healthcheck run'"
else
# kill and stop yield the container into a non-running state
is "$output" ".* $policy" "container was stopped/killed"
assert "$output" != "running $policy"
fi
run_podman rm -f -t0 $ctr
run_podman rmi -f $img
done
}
# vim: filetype=sh
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