DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" > /dev/null 2>&1 && pwd)"
. "$DIR/prelude.sh"

cd src

# Export these before verbose is set to avoid sharing sensitive info.
export CEDAR_USERNAME=${cedar_user}
export CEDAR_API_KEY=${cedar_api_key}

set -o errexit
set -o verbose

if [[ ${disable_unit_tests} = "false" && ! -f ${skip_tests} ]]; then

  # activate the virtualenv if it has been set up
  activate_venv
  # Install db-contrib-tool to symbolize crashes during resmoke suite runs
  # This is not supported on Windows and MacOS, so doing it only on Linux
  if [ "$(uname)" == "Linux" ]; then
    setup_db_contrib_tool
  fi

  if [[ -f "patch_test_tags.tgz" ]]; then
    tags_build_variant="${build_variant}"

    if [[ "${build_variant}" =~ .*"-query-patch-only" ]]; then
      # Use the RHEL 8 all feature flags variant for the classic engine variant. The original
      # classic engine variant is not a required builder and therefore not captured in patch
      # test failure history.
      tags_build_variant="enterprise-rhel-80-64-bit-dynamic-all-feature-flags-required"
    fi

    $python buildscripts/testmatrix/getdisplaytaskname.py "${task_name}" "${build_variant}" > display_task_name.txt
    display_task_name=$(cat display_task_name.txt)

    tar -xzf patch_test_tags.tgz

    calculated_tags_file_path="failedtesttags/${tags_build_variant}/${display_task_name}.yml"

    if [[ -f $calculated_tags_file_path ]]; then
      extra_args="$extra_args --tagFile=failedtesttags/${tags_build_variant}/${display_task_name}.yml --includeWithAnyTags=recent_failure,recent_change"
    else
      echo "calculated tags file does not exist: $calculated_tags_file_path"
    fi
  fi

  # Set the TMPDIR environment variable to be a directory in the task's working
  # directory so that temporary files created by processes spawned by resmoke.py get
  # cleaned up after the task completes. This also ensures the spawned processes
  # aren't impacted by limited space in the mount point for the /tmp directory.
  export TMPDIR="${workdir}/tmp"
  mkdir -p $TMPDIR

  if [ -f /proc/self/coredump_filter ]; then
    # Set the shell process (and its children processes) to dump ELF headers (bit 4),
    # anonymous shared mappings (bit 1), and anonymous private mappings (bit 0).
    echo 0x13 > /proc/self/coredump_filter

    if [ -f /sbin/sysctl ]; then
      # Check that the core pattern is set explicitly on our distro image instead
      # of being the OS's default value. This ensures that coredump names are consistent
      # across distros and can be picked up by Evergreen.
      core_pattern=$(/sbin/sysctl -n "kernel.core_pattern")
      if [ "$core_pattern" = "dump_%e.%p.core" ]; then
        echo "Enabling coredumps"
        ulimit -c unlimited
      fi
    fi
  fi

  if [ $(uname -s) == "Darwin" ]; then
    core_pattern_mac=$(/usr/sbin/sysctl -n "kern.corefile")
    if [ "$core_pattern_mac" = "dump_%N.%P.core" ]; then
      echo "Enabling coredumps"
      ulimit -c unlimited
    fi
  fi

  extra_args="$extra_args --jobs=${resmoke_jobs}"

  if [ ${should_shuffle} = true ]; then
    extra_args="$extra_args --shuffle"
  fi

  if [ ${continue_on_failure} = true ]; then
    extra_args="$extra_args --continueOnFailure"
  fi

  # We reduce the storage engine's cache size to reduce the likelihood of a mongod process
  # being killed by the OOM killer. The --storageEngineCacheSizeGB command line option is only
  # filled in with a default value here if one hasn't already been specified in the task's
  # definition or build variant's definition.
  set +o errexit
  echo "${resmoke_args} ${test_flags}" | grep -q storageEngineCacheSizeGB
  if [ $? -eq 1 ]; then
    echo "${resmoke_args} ${test_flags}" | grep -q "\-\-storageEngine=inMemory"
    if [ $? -eq 0 ]; then
      # We use a default of 4GB for the InMemory storage engine.
      extra_args="$extra_args --storageEngineCacheSizeGB=4"
    else
      # We use a default of 1GB for all other storage engines.
      extra_args="$extra_args --storageEngineCacheSizeGB=1"
    fi
  fi
  set -o errexit

  # Reduce the JSHeapLimit for the serial_run task task on Code Coverage builder variant.
  if [[ "${build_variant}" = "enterprise-rhel-80-64-bit-coverage" && "${task_name}" = "serial_run" ]]; then
    extra_args="$extra_args --mongodSetParameter \"{'jsHeapLimitMB':10}\""
  fi

  # Even though all feature flags may be enabled on a variant, often times we do not want to run
  # feature flag tests because they will most likely fail. For example, during multiversion testing,
  # all feature flags may be enabled on the latest version, but running feature flag specific tests on
  # older versions (last-lts/last-continuous) will likely fail because those features most likely do not exist.
  if [[ ${run_no_feature_flag_tests} == "true" ]]; then
    extra_args="$extra_args --runNoFeatureFlagTests"
  fi

  path_value="$PATH:/data/multiversion"

  # Set the suite name to be the task name by default; unless overridden with the `suite` expansion.
  suite_name=${task_name}
  if [[ -n ${suite} ]]; then
    suite_name=${suite}
  fi

  resmoke_env_options="${gcov_environment} ${lang_environment} ${san_options}"
  echo $resmoke_env_options > resmoke_env_options.txt

  # The "resmoke_wrapper" expansion is used by the 'burn_in_tests' task to wrap the resmoke.py
  # invocation. It doesn't set any environment variables and should therefore come last in
  # this list of expansions.
  set +o errexit
  PATH="$path_value" \
    AWS_PROFILE=${aws_profile_remote} \
    eval \
    $resmoke_env_options \
    ${resmoke_wrapper} \
    $python buildscripts/resmoke.py run \
    ${record_with} \
    ${resmoke_args} \
    $extra_args \
    ${test_flags} \
    --suites=${suite_name} \
    --log=buildlogger \
    --staggerJobs=on \
    --installDir=${install_dir} \
    --buildId=${build_id} \
    --distroId=${distro_id} \
    --executionNumber=${execution} \
    --projectName=${project} \
    --gitRevision=${revision} \
    --revisionOrderId=${revision_order_id} \
    --taskId=${task_id} \
    --taskName=${task_name} \
    --variantName=${build_variant} \
    --versionId=${version_id} \
    --reportFile=report.json \
    --perfReportFile=perf.json \
    --cedarReportFile=cedar_report.json
  resmoke_exit_code=$?
  set -o errexit

  if [[ -n "${record_with}" ]]; then
    recording_size=$( (du -ch ./*.undo ./*.undo.tokeep || true) | grep total)
    echo "UndoDB produced recordings that were $recording_size (uncompressed) on disk"
    # Unittests recordings are renamed so there's never a need to store any .undo files.
    if [[ $resmoke_exit_code = 0 || "${task_name}" == "run_unittests_with_recording" ]]; then
      echo "Removing UndoDB recordings of successful tests."
      rm *.undo || true
    fi
  fi

  # 74 is exit code for IOError on POSIX systems, which is raised when the machine is
  # shutting down.
  #
  # 75 is exit code resmoke.py uses when the log output would be incomplete due to failing
  # to communicate with logkeeper.
  if [[ $resmoke_exit_code = 74 || $resmoke_exit_code = 75 ]]; then
    echo $resmoke_exit_code > run_tests_infrastructure_failure
    exit 0
  elif [ $resmoke_exit_code != 0 ]; then
    # On failure save the resmoke exit code.
    echo $resmoke_exit_code > resmoke_error_code
    exit 0
  elif [ $resmoke_exit_code = 0 ]; then
    # On success delete core files.
    core_files=$(/usr/bin/find -H .. \( -name "*.core" -o -name "*.mdmp" \) 2> /dev/null)
    rm -rf $core_files
  fi

  exit $resmoke_exit_code
fi # end if [[ ${disable_unit_tests} && ! -f ${skip_tests|/dev/null} ]]