Implement migrate rock (#18)

* Implement migrate rock

migrate/rockcraft.yaml

@@ -0,0 +1,51 @@
+# From (ko image): https://github.com/knative/pkg/blob/release-1.12/apiextensions/storageversion/cmd/migrate/main.go
+name: migrate
+base: ubuntu@22.04
+version: 1.12.4
+summary: An image for Knative's migrate
+description: |
+  An image for Knative's migrate
+license: Apache-2.0
+entrypoint-service: migrate
+run-user: _daemon_
+
+platforms:
+  amd64:
+
+environment:
+  # Environment variables that are set in the base image
+  KO_DATA_PATH: "/var/run/ko"
+  SSL_CERT_FILE: "/etc/ssl/certs/ca-certificates.crt"
+
+services:
+  migrate:
+    override: replace
+    command: "/ko-app/migrate [ ]"
+    startup: enabled
+
+parts:
+  security-team-requirement:
+    plugin: nil
+    override-build: |
+      mkdir -p ${CRAFT_PART_INSTALL}/usr/share/rocks
+      (echo "# os-release" && cat /etc/os-release && echo "# dpkg-query" && \
+      dpkg-query --root=${CRAFT_PROJECT_DIR}/../bundles/ubuntu-22.04/rootfs/ -f '${db:Status-Abbrev},${binary:Package},${Version},${source:Package},${Source:Version}\n' -W) \
+      > ${CRAFT_PART_INSTALL}/usr/share/rocks/dpkg.query
+
+  migrate:
+    plugin: go
+    source: https://github.com/knative/pkg.git
+    source-type: git
+    source-branch: release-1.12
+    overlay-packages:
+      # Install in overlay instead of stage packages due to https://github.com/canonical/rockcraft/issues/334.
+      - ca-certificates
+    build-snaps:
+      - go/1.21/stable
+    build-environment:
+      - CGO_ENABLED: 0
+      - GOOS: linux
+    override-build: |
+      cd apiextensions/storageversion/cmd/migrate
+      mkdir $CRAFT_PART_INSTALL/ko-app
+      go build -o $CRAFT_PART_INSTALL/ko-app/migrate -a .

migrate/tests/test_rock.py

@@ -0,0 +1,44 @@
+# Copyright 2024 Canonical Ltd.
+# See LICENSE file for licensing details.
+
+import pytest
+import subprocess
+
+from charmed_kubeflow_chisme.rock import CheckRock
+
+
+@pytest.mark.abort_on_fail
+def test_rock():
+    """Test rock."""
+    check_rock = CheckRock("rockcraft.yaml")
+    rock_image = check_rock.get_name()
+    rock_version = check_rock.get_version()
+    LOCAL_ROCK_IMAGE = f"{rock_image}:{rock_version}"
+
+    subprocess.run(
+        [
+            "docker",
+            "run",
+            "--rm",
+            "--entrypoint",
+            "/bin/bash",
+            LOCAL_ROCK_IMAGE,
+            "-c",
+            "ls -la /ko-app/migrate",
+        ],
+        check=True,
+    )
+
+    subprocess.run(
+        [
+            "docker",
+            "run",
+            "--rm",
+            "--entrypoint",
+            "/bin/bash",
+            LOCAL_ROCK_IMAGE,
+            "-c",
+            "ls -la /etc/ssl/certs/ca-certificates.crt",
+        ],
+        check=True,
+    )

migrate/tox.ini

@@ -0,0 +1,51 @@
+# Copyright 2024 Canonical Ltd.
+# See LICENSE file for licensing details.
+[tox]
+skipsdist = True
+skip_missing_interpreters = True
+envlist = pack, export-to-docker, sanity, integration
+
+[testenv]
+setenv =
+    PYTHONPATH={toxinidir}
+    PYTHONBREAKPOINT=ipdb.set_trace
+
+[testenv:pack]
+passenv = *
+allowlist_externals =
+    rockcraft
+commands =
+    rockcraft pack
+
+[testenv:export-to-docker]
+passenv = *
+allowlist_externals =
+    bash
+    rockcraft
+    yq
+commands =
+    # export rock to docker
+    bash -c 'NAME=$(yq eval .name rockcraft.yaml) && \
+             VERSION=$(yq eval .version rockcraft.yaml) && \
+             ARCH=$(yq eval ".platforms | keys | .[0]" rockcraft.yaml) && \
+             ROCK="$\{NAME\}_$\{VERSION\}_$\{ARCH\}.rock" && \
+             DOCKER_IMAGE=$NAME:$VERSION && \
+             echo "Exporting $ROCK to docker as $DOCKER_IMAGE" && \
+             rockcraft.skopeo --insecure-policy copy oci-archive:$ROCK docker-daemon:$DOCKER_IMAGE'
+
+[testenv:sanity]
+passenv = *
+deps =
+    pytest
+    charmed-kubeflow-chisme
+commands =
+    # run rock tests
+    pytest -s -v --tb native --show-capture=all --log-cli-level=INFO {posargs} {toxinidir}/tests
+
+[testenv:integration]
+passenv = *
+allowlist_externals =
+    echo
+commands =
+    # TODO: Implement integration tests here
+    echo "WARNING: This is a placeholder test - no test is implemented here."