backing-image-manager: add rockcraft specs and tests.

tests/sanity/test_longhorn_backing_image_manager.py

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+#
+# Copyright 2024 Canonical, Ltd.
+#
+
+import logging
+import sys
+
+import pytest
+from k8s_test_harness.util import docker_util, env_util, platform_util
+
+LOG: logging.Logger = logging.getLogger(__name__)
+
+LOG.addHandler(logging.FileHandler(f"{__name__}.log"))
+LOG.addHandler(logging.StreamHandler(sys.stdout))
+
+
+IMAGE_NAME = "backing-image-manager"
+IMAGE_VERSIONS = ["v1.7.0"]
+
+
+@pytest.mark.abort_on_fail
+@pytest.mark.parametrize("image_version", IMAGE_VERSIONS)
+def test_check_rock_image_contents(image_version):
+    """Test ROCK contains same fileset as original image."""
+
+    architecture = platform_util.get_current_rockcraft_platform_architecture()
+
+    rock_meta = env_util.get_build_meta_info_for_rock_version(
+        IMAGE_NAME, image_version, architecture
+    )
+    rock_image = rock_meta.image
+
+    binary_paths_to_check = [
+        "/tini",
+        "/usr/local/bin/backing-image-manager"
+    ]
+
+    docker_util.ensure_image_contains_paths(
+        rock_image,
+        binary_paths_to_check,
+    )

v1.7.0/backing-image-manager/rockcraft.yaml

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+# Copyright 2024 Canonical Ltd.
+# See LICENSE file for licensing details.
+
+# Rockcraft definition for the Longhorn Backing Image Manager image:
+# longhornio/backing-image-manager:v1.7.0
+
+name: backing-image-manager
+summary: Rock containing the Longhorn Backing Image Manager component.
+description: |
+  Rock containing Longhorn Backing Image manager component: https://github.com/longhorn/backing-image-manager
+  Aims to replicate the upstream official image: longhornio/backing-image-manager:v1.7.0
+license: Apache-2.0
+
+version: "v1.7.0"
+
+# NOTE(aznashwan): the base for the image is the Suse Linux Enterprise
+# Base Container Image (SLE BCE) Service Pack 6 which ships with Linux 6.4,
+# and is thus most comparable to 24.04:
+# https://github.com/longhorn/backing-image-manager/blob/v1.7.0/package/Dockerfile#L3
+base: [email protected]
+
+build-base: [email protected]
+platforms:
+  amd64:
+
+
+services:
+  backing-image-manager:
+    startup: enabled
+    override: replace
+
+    # https://github.com/longhorn/backing-image-manager/blob/v1.7.0/package/Dockerfile#L31-L33
+    command: /tini -- [ backing-image-manager ]
+
+    on-success: shutdown
+    on-failure: shutdown
+
+entrypoint-service: backing-image-manager
+
+parts:
+
+  # NOTE(aznashwan): the binary is built within a Docker container
+  # which is set up by Rancher's Dapper tool: https://github.com/rancher/dapper
+  # The setup steps for the build container are contained within this Dockerfile:
+  # https://github.com/longhorn/backing-image-manager/blob/v1.7.0/Dockerfile.dapper
+  setup-build-env:
+    plugin: nil
+
+    build-packages:
+      # https://github.com/longhorn/backing-image-manager/blob/v1.7.0/Dockerfile.dapper#L20-L24
+      - cmake
+      - wget
+      - curl
+      - git
+      - less
+      - file
+      - libkmod-dev             # libkmod-devel
+      - libnl-3-dev             # libnl3-devel
+      - linux-headers-6.8.0-41  # linux-glibc-devel
+      - pkg-config
+      - psmisc
+      - fuse
+      - librdmacm-dev           # librdmacm1
+      - rdmacm-utils            # librdmacm-utils
+      - libibverbs-dev          # libibverbs
+      - libaio-dev              # libaio-devel
+      - libc6-dev               # glibc-devel, glibc-devel-static
+      - iptables
+      - libltdl7
+      - libdevmapper1.02.1      # libdevmapper1_03
+      - iproute2
+      - jq
+      - gcc
+
+  # NOTE(aznashwan): the Makefile targets are just the scripts found in the
+  # scripts/ directory which are executed within the Dapper build container:
+  # https://github.com/longhorn/backing-image-manager/blob/v1.7.0/Makefile#L1
+  # https://github.com/longhorn/backing-image-manager/blob/v1.7.0/Makefile#L10-L11
+  build-lonhorn-backing-image-manager:
+    plugin: nil
+    after: ["setup-build-env"]
+
+    source-type: git
+    source: https://github.com/longhorn/backing-image-manager
+    source-tag: v1.7.0
+    source-depth: 1
+
+    build-snaps:
+      # https://github.com/longhorn/backing-image-manager/blob/v1.7.0/Dockerfile.dapper#L1
+      - go/1.22/stable
+
+    override-build: |
+      set -eux -o pipefail
+
+      cd $CRAFT_PART_SRC
+
+      bash ./scripts/build
+
+      # https://github.com/longhorn/backing-image-manager/blob/v1.7.0/package/Dockerfile#L23
+      mkdir -p $CRAFT_PART_INSTALL/usr/local/bin
+      cp $CRAFT_PART_SRC/bin/backing-image-manager-${CRAFT_ARCH_BUILD_FOR} $CRAFT_PART_INSTALL/usr/local/bin/backing-image-manager
+
+  # Pulls a pre-built binary release of the `tini` init system.
+  # https://github.com/longhorn/backing-image-manager/blob/v1.7.0/package/Dockerfile#L28-L30
+  fetch-tini-init:
+    plugin: nil
+    after: ["setup-build-env"]
+
+    override-build: |
+      set -eux -o pipefail
+
+      TINI_VERSION="v0.19.0"
+      ARCH="$CRAFT_TARGET_ARCH"
+
+      URL="https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini-${ARCH}"
+
+      curl -sSfL $URL -o $CRAFT_PART_INSTALL/tini
+      chmod +x $CRAFT_PART_INSTALL/tini
+
+  prep-final-image:
+    plugin: nil
+
+    # https://github.com/longhorn/backing-image-manager/blob/v1.7.0/package/Dockerfile#L19-L21
+    stage-packages:
+      - kmod
+      - curl
+      - wget
+      - nfs-common              # nfs-client
+      - nfs4-acl-tools
+      - fuse
+      - librdmacm-dev           # librdmacm1
+      - rdmacm-utils            # librdmacm-utils
+      - libibverbs-dev          # libibverbs
+      - libconfig-general-perl  # perl-Config-General
+      - libaio-dev              # libaio-devel
+      - sg3-utils               # sg3_utils
+      - net-tools               # iputils
+      - telnet
+      - iperf3                  # iperf
+      - qemu-utils              # qemu-tools
+      - iproute2
+      - e2fsprogs
+      - xfsprogs
+      - xfslibs-dev             # xfsprogs-devel