scripts: create bwc.sh a library for funcs around build-with-containers

Copy and make generic various bits of code present in
ceph-pull-requests/build/build and ceph-pull-requests-arm64/build/build
such that they can be replaced in the future by calls to functions
in this file.

Signed-off-by: John Mulligan <phlogistonjohn@asynchrono.us>

diff --git a/scripts/bwc.sh b/scripts/bwc.sh
new file mode 100644 (file)
index 0000000..123c473
--- /dev/null
+++ b/scripts/bwc.sh
@@ -0,0 +1,102 @@
+#!/bin/bash
+#
+# ceph-build library script for performing build tasks using the
+# build-with-container.py tool from the ceph/ceph repo.
+#
+
+# bwc - Run a build-with-container.py based build task.
+# Arguments:
+#   $1 - timeout value in hours
+#   Remaining args passed to BWC command
+# Variables:
+#   DISTRO_BASE - if set, use DISTRO_BASE to select bwc distro
+#                 argument. Defaults to "jammy"
+#   GIT_BRANCH - Pass the current branch name to BWC in order
+#                to generate a container tag. Defaults to "main"
+#   NPMCACHE - Path to shared npm cache directory.
+bwc() {
+    # TODO: enable (read-only?) sccache support
+    # specify timeout in hours for $1
+    local timeout=$(($1*60*60))
+    shift
+    local args=()
+    if [ "${NPMCACHE}" ]; then
+        args+=(--npm-cache-path="${NPMCACHE}")
+    fi
+    args+=("${@}")
+    timeout "${timeout}" ./src/script/build-with-container.py \
+        -d "${DISTRO_BASE:-jammy}" \
+        --env-file="${PWD}/.env" \
+        --current-branch="${GIT_BRANCH:-main}" \
+        -t"+$(bwc_arch)" \
+        "${args[@]}"
+}
+
+# bwc_populate_npm_cache - Configure the ceph sources and try to install
+#   the dashboard fontend dependencies. This exists because we had some
+#   issues getting npm to run reliably in the past.
+# Arguments: (none)
+# Variables:
+#   NPMCACHE - Path to shared npm cache directory.
+# Output: Status string
+bwc_populate_npm_cache() {
+    if [ -z "${NPMCACHE}" ]; then
+        return 0
+    fi
+    # show npm cache info before trying to install dashboard deps
+    npm_cache_info
+    bwc 1 -e configure
+    # try to pre-load the npm cache so that it doesn't fail during the normal build
+    # step
+    for i in {0..5}; do
+        bwc 1 -e custom -- \
+            cmake --build build -t mgr-dashboard-frontend-deps && break
+        echo "Warning: Attempt $((i+1)) to cache npm packages failed."
+        sleep $((10 + 30 * i))
+    done
+    # show npm cache info after trying to install dashboard deps
+    npm_cache_info
+}
+
+# npm_cache_info - Print the size of the NPMCACHE directory.
+# Arguments: (none)
+# Variables:
+#   NPMCACHE - Path to shared npm cache directory.
+# Output: Status string
+npm_cache_info() {
+    if [ -z "${NPMCACHE}" ]; then
+        return 0
+    fi
+    echo '===== npm cache info ======='
+    du -sh "${NPMCACHE}" || echo "${NPMCACHE} not present"
+    echo '============================'
+}
+
+# bwc_login - Log into registries
+# Arguments: (none)
+# Variables:
+#   DOCKER_HUB_USERNAME - Path to shared npm cache directory.
+#   DOCKER_HUB_PASSWORD - Path to shared npm cache directory.
+bwc_login() {
+    if [ -z "${DOCKER_HUB_USERNAME}" ] || [ -z "${DOCKER_HUB_PASSWORD}" ]; then
+        return 0
+    fi
+    podman login -u "${DOCKER_HUB_USERNAME}" -p "${DOCKER_HUB_PASSWORD}" docker.io
+}
+
+# bwc_arch - Print the architecture of the current host in the style
+# common for containers (Go-style).
+# Arguments: (none)
+# Variables: (none)
+# Output: Architecture string
+bwc_arch() {
+    local myarch
+    myarch=$(uname -m)
+    case "${myarch}" in
+        x86_64) echo amd64 ;;
+        aarch64) echo arm64 ;;
+        *) echo "${myarch}" ;;
+    esac
+}
+
+# vim: ts=4 sw=4 expandtab