1 files changed, 41 insertions, 0 deletions
diff --git a/meta/classes-recipe/image-artifact-names.bbclass b/meta/classes-recipe/image-artifact-names.bbclass
new file mode 100644
index 0000000000..bc76ff0e16
--- /dev/null
+++ b/meta/classes-recipe/image-artifact-names.bbclass
@@ -0,0 +1,41 @@
+#
+# Copyright OpenEmbedded Contributors
+#
+# SPDX-License-Identifier: MIT
+#
+
+##################################################################
+# Specific image creation and rootfs population info.
+##################################################################
+
+IMAGE_BASENAME ?= "${PN}"
+IMAGE_VERSION_SUFFIX ?= "-${DATETIME}"
+IMAGE_VERSION_SUFFIX[vardepsexclude] += "DATETIME SOURCE_DATE_EPOCH"
+IMAGE_NAME ?= "${IMAGE_LINK_NAME}${IMAGE_VERSION_SUFFIX}"
+IMAGE_LINK_NAME ?= "${IMAGE_BASENAME}${IMAGE_MACHINE_SUFFIX}${IMAGE_NAME_SUFFIX}"
+
+# This needs to stay in sync with IMAGE_LINK_NAME, but with INITRAMFS_IMAGE instead of IMAGE_BASENAME
+# and without ${IMAGE_NAME_SUFFIX} which all initramfs images should set to empty
+INITRAMFS_IMAGE_NAME ?= "${@['${INITRAMFS_IMAGE}${IMAGE_MACHINE_SUFFIX}', ''][d.getVar('INITRAMFS_IMAGE') == '']}"
+
+# The default DEPLOY_DIR_IMAGE is ${MACHINE} directory:
+# meta/conf/bitbake.conf:DEPLOY_DIR_IMAGE ?= "${DEPLOY_DIR}/images/${MACHINE}"
+# so many people find it unnecessary to include this suffix to every image
+# stored there, but other people often fetch various images for different
+# MACHINEs to the same downloads directory and then the suffix is very helpful
+# add separate variable for projects to decide which scheme works best for them
+# without understanding the IMAGE_NAME/IMAGE_LINK_NAME structure.
+IMAGE_MACHINE_SUFFIX ??= "-${MACHINE}"
+
+# IMAGE_NAME is the base name for everything produced when building images.
+# The actual image that contains the rootfs has an additional suffix (.rootfs
+# by default) followed by additional suffices which describe the format (.ext4,
+# .ext4.xz, etc.).
+IMAGE_NAME_SUFFIX ??= ".rootfs"
+
+python () {
+    if bb.data.inherits_class('deploy', d) and d.getVar("IMAGE_VERSION_SUFFIX") == "-${DATETIME}":
+        import datetime
+        d.setVar("IMAGE_VERSION_SUFFIX", "-" + datetime.datetime.fromtimestamp(int(d.getVar("SOURCE_DATE_EPOCH")), datetime.timezone.utc).strftime('%Y%m%d%H%M%S'))
+        d.setVarFlag("IMAGE_VERSION_SUFFIX", "vardepvalue", "")
+}