build-website.sh

#!/bin/bash -e

set -o pipefail

BAZEL="${BAZEL:-bazel}"
OUTPUT_DIR="${1:-_site}"
OUTPUT_DIR="$(realpath "${OUTPUT_DIR}")"
OUTPUT_BASE="$($BAZEL info output_base 2>/dev/null)"


debug_jvm_fail () {
    RETURN_CODE="$?"
    echo "Bazel exited with error: ${RETURN_CODE}"
    JVM_OUT="$(find "${OUTPUT_BASE}" -name "jvm.out" 2>/dev/null)"

    if [[ -n "$JVM_OUT" && -s "$JVM_OUT" ]]; then
        echo
        echo "jvm.out: ${JVM_OUT}"
        cat "$JVM_OUT"
        echo
    fi
    return "$RETURN_CODE"
}

inject_ci_bazelrc () {
    {

        PROC_COUNT="$(nproc)"
        PROCS=$((PROC_COUNT - 1))
        SPHINX_ARGS="-j 12 -v warn"
        echo "build:ci --action_env=SPHINX_RUNNER_ARGS=\"${SPHINX_ARGS}\""
        # echo "build:ci --local_ram_resources=20480"

    } > repo.bazelrc

    cat repo.bazelrc
}


if  [[ -e "$OUTPUT_DIR" ]]; then
    echo "Path to build the website (${OUTPUT_DIR}) exists, removing contents"
    rm -rf "${OUTPUT_DIR:?}"/*
fi

mkdir -p "${OUTPUT_DIR}"
BAZEL_BUILD_ARGS=()

if [[ -n "$CI" ]]; then
    BAZEL_BUILD_ARGS=(--config=ci)
    inject_ci_bazelrc
fi

$BAZEL run \
         "${BAZEL_BUILD_ARGS[@]}" \
         --@envoy//tools/tarball:target=//site \
         @envoy//tools/tarball:unpack \
         "$OUTPUT_DIR" || debug_jvm_fail

if [[ -n "$CI" ]]; then
    $BAZEL --timeout=5 shutdown > /dev/null 2>&1 || :
fi