[sonic_debian_extension] fix packages.json generation and make the build fail when packages.json is not generated (sonic-net#8044)

After sonic-net#7598 the packages.json generation is broken. This change fixes it make the whole build fail in case generation failed.

Signed-off-by: Stepan Blyschak <[email protected]>

Author: stepanblyschak

files/build_templates/packages.json.j2

@@ -1,6 +1,12 @@
+{%- set docker_installation_targets = [] -%}
+{%- for docker_installation_target in installer_images.strip().split() -%}
+{%- set pkgname, docker_build_path, machine, image = docker_installation_target.split('|') -%}
+{%- if not machine or (machine and machine == target_machine) -%}
+{%- set _ = docker_installation_targets.append((pkgname, image)) -%}
+{%- endif -%}
+{%- endfor -%}
 {
-{% for docker_installation_target in installer_images.strip().split() -%}
-{% set pkgname, docker_build_path, image = docker_installation_target.split('|') -%}
+{% for pkgname, image in docker_installation_targets -%}
 {% set imagefilepath = image.split(':')|first -%}
 {% set imageversion = image.split(':')|last -%}
 {% set imagefilename = imagefilepath.split('/')|last -%}

files/build_templates/sonic_debian_extension.j2

@@ -667,7 +667,11 @@ fi
 
 SONIC_PACKAGE_MANAGER_FOLDER="/var/lib/sonic-package-manager/"
 sudo mkdir -p $FILESYSTEM_ROOT/$SONIC_PACKAGE_MANAGER_FOLDER
-j2 $BUILD_TEMPLATES/packages.json.j2 | sudo tee $FILESYSTEM_ROOT/$SONIC_PACKAGE_MANAGER_FOLDER/packages.json
+target_machine="$TARGET_MACHINE" j2 $BUILD_TEMPLATES/packages.json.j2 | sudo tee $FILESYSTEM_ROOT/$SONIC_PACKAGE_MANAGER_FOLDER/packages.json
+if [ "${PIPESTATUS[0]}" != "0" ]; then
+    echo "Failed to generate packages.json" >&2
+    exit 1
+fi
 
 # Copy docker_image_ctl.j2 for SONiC Package Manager
 sudo cp $BUILD_TEMPLATES/docker_image_ctl.j2 $FILESYSTEM_ROOT_USR_SHARE_SONIC_TEMPLATES/docker_image_ctl.j2