github.com/Evanesco-Labs/go-evanesco@v1.0.1/build/travis_keepalive.sh (about)

     1  #!/usr/bin/env bash
     2  
     3  # travis_keepalive runs the given command and preserves its return value,
     4  # while it forks a child process what periodically produces a log line,
     5  # so that Travis won't abort the build after 10 minutes.
     6  
     7  # Why?
     8  # `t.Log()` in Go holds the buffer until the test does not pass or fail,
     9  # and `-race` can increase the execution time by 2-20x.
    10  
    11  set -euo pipefail
    12  
    13  readonly KEEPALIVE_INTERVAL=300 # seconds => 5m
    14  
    15  main() {
    16    keepalive
    17    $@
    18  }
    19  
    20  # Keepalive produces a log line in each KEEPALIVE_INTERVAL.
    21  keepalive() {
    22    local child_pid
    23    # Note: We fork here!
    24    repeat "keepalive" &
    25    child_pid=$!
    26    ensureChildOnEXIT "${child_pid}"
    27  }
    28  
    29  repeat() {
    30    local this="$1"
    31    while true; do
    32      echo "${this}"
    33      sleep "${KEEPALIVE_INTERVAL}"
    34    done
    35  }
    36  
    37  # Ensures that the child gets killed on normal program exit.
    38  ensureChildOnEXIT() {
    39    # Note: SIGINT and SIGTERM are forwarded to the child process by Bash
    40    # automatically, so we don't have to deal with signals.
    41  
    42    local child_pid="$1"
    43    trap "kill ${child_pid}" EXIT
    44  }
    45  
    46  main "$@"