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47 lines
1.0 KiB
47 lines
1.0 KiB
6 years ago
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#!/usr/bin/env bash
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# travis_keepalive runs the given command and preserves its return value,
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# while it forks a child process what periodically produces a log line,
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# so that Travis won't abort the build after 10 minutes.
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# Why?
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# `t.Log()` in Go holds the buffer until the test does not pass or fail,
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# and `-race` can increase the execution time by 2-20x.
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set -euo pipefail
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readonly KEEPALIVE_INTERVAL=300 # seconds => 5m
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main() {
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keepalive
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$@
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}
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# Keepalive produces a log line in each KEEPALIVE_INTERVAL.
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keepalive() {
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local child_pid
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# Note: We fork here!
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repeat "keepalive" &
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child_pid=$!
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ensureChildOnEXIT "${child_pid}"
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}
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repeat() {
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local this="$1"
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while true; do
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echo "${this}"
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sleep "${KEEPALIVE_INTERVAL}"
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done
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}
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# Ensures that the child gets killed on normal program exit.
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ensureChildOnEXIT() {
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# Note: SIGINT and SIGTERM are forwarded to the child process by Bash
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# automatically, so we don't have to deal with signals.
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local child_pid="$1"
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trap "kill ${child_pid}" EXIT
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}
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main "$@"
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