RE: [PATCH 1/1] rootfs postprocess: clean python cache

[<Venkata.Pyla@toshiba-tsip.com>]

>-----Original Message-----
>From: Felix Moessbauer <felix.moessbauer@siemens.com>
>Sent: 09 January 2023 16:59
>To: isar-users@googlegroups.com
>Cc: pyla venkata(ＴＳＩＰ TMIEC ODG Porting) <Venkata.Pyla@toshiba-
>tsip.com>; jan.kiszka@siemens.com; hayashi kazuhiro(林 和宏 □ＳＷＣ◯ＡＣ
>Ｔ) <kazuhiro3.hayashi@toshiba.co.jp>; dinesh kumar(ＴＳＩＰ TMIEC ODG
>Porting) <dinesh.kumar@toshiba-tsip.com>; Felix Moessbauer
><felix.moessbauer@siemens.com>
>Subject: [PATCH 1/1] rootfs postprocess: clean python cache
>
>When calling python scripts, python automatically creates cache files to
>speedup future invocations of the same sources. This often happens in postinst
>scripts, that directly run in the image chroot. The created debian packages do
>not ship these files, as the debheper scripts remove them before installing.
>
>For the rootfs part, we manually have to do it to also not include these in the
>final image. This patch implements this logic in a custom cleanup postprocess
>step. As there might be situations where shipping of a subset of the caches is
>desireable (e.g. readonly rootfs images), we add support to control this logic
>using ROOTFS_FEATURES.
>
>Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
>---
> meta/classes/image.bbclass  | 2 +-
> meta/classes/rootfs.bbclass | 6 ++++++
> 2 files changed, 7 insertions(+), 1 deletion(-)
>
>diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass index
>629a0c1..6859240 100644
>--- a/meta/classes/image.bbclass
>+++ b/meta/classes/image.bbclass
>@@ -80,7 +80,7 @@ image_do_mounts() {
> }
>
> ROOTFSDIR = "${IMAGE_ROOTFS}"
>-ROOTFS_FEATURES += "clean-package-cache generate-manifest export-dpkg-
>status clean-log-files clean-debconf-cache"
>+ROOTFS_FEATURES += "clean-package-cache clean-pycache generate-
>manifest export-dpkg-status clean-log-files clean-debconf-cache"
> ROOTFS_PACKAGES += "${IMAGE_PREINSTALL} ${IMAGE_INSTALL}"
> ROOTFS_MANIFEST_DEPLOY_DIR ?= "${DEPLOY_DIR_IMAGE}"
> ROOTFS_DPKGSTATUS_DEPLOY_DIR ?= "${DEPLOY_DIR_IMAGE}"
>diff --git a/meta/classes/rootfs.bbclass b/meta/classes/rootfs.bbclass index
>786682d..325e7ae 100644
>--- a/meta/classes/rootfs.bbclass
>+++ b/meta/classes/rootfs.bbclass
>@@ -252,6 +252,12 @@ rootfs_postprocess_clean_debconf_cache() {
>     sudo rm -rf "${ROOTFSDIR}/var/cache/debconf/"*
> }
>
>+ROOTFS_POSTPROCESS_COMMAND +=
>"${@bb.utils.contains('ROOTFS_FEATURES', 'clean-pycache',
>'rootfs_postprocess_clean_pycache', '', d)}"
>+rootfs_postprocess_clean_pycache() {
>+    sudo find ${ROOTFSDIR}/usr -type f -name '*.pyc'       -delete -print
>+    sudo find ${ROOTFSDIR}/usr -type d -name '__pycache__' -delete
>+-print }
>+

Thanks Felix, this patch works for me.


> ROOTFS_POSTPROCESS_COMMAND +=
>"${@bb.utils.contains('ROOTFS_FEATURES', 'generate-manifest',
>'rootfs_generate_manifest', '', d)}"
> rootfs_generate_manifest () {
>     mkdir -p ${ROOTFS_MANIFEST_DEPLOY_DIR}
>--
>2.34.1