task.yaml

summary: Ensure that the ubuntu-core -> core transition works

# we never test on core because the transition can only happen on "classic"
# we disable on ppc64el because the downloads are very slow there
systems: [-ubuntu-core-16-*, -ubuntu-*-ppc64el]

warn-timeout: 1m
kill-timeout: 5m

restore: |
    rm -f state.json.new

execute: |
    wait_for_service() {
        local service_name="$1"
        local state="${2:-active}"
        while ! systemctl show -p ActiveState $service_name | grep -q "ActiveState=$state"; do systemctl status $service_name || true; sleep 1; done
    }
    curl() {
        local url="$1"
        # sadly systemd active means not that its really ready so we wait
        # here for the socket to be available
        while ! netstat -t -l -n|grep :80; do
            netstat -l -l -n
            sleep 1
        done
        python3 -c "import urllib.request; print(urllib.request.urlopen(\"$url\").read().decode(\"utf-8\"))"
    }

    . "$TESTSLIB/pkgdb.sh"
    echo "Ensure core is gone and we have ubuntu-core instead"
    dpkg --purge --force-depends snapd
    apt-get install -f -y
    distro_install_build_snapd

    # modify daemon state to set ubuntu-core-transition-last-retry-time to the
    # current time to prevent the ubuntu-core transition before the test snap is
    # installed
    systemctl stop snapd.{service,socket}
    now=$(date --utc -Ins)
    cat /var/lib/snapd/state.json | jq -c '. + {data: (.data + {"ubuntu-core-transition-last-retry-time": "'"$now"'"})}' > state.json.new
    mv state.json.new /var/lib/snapd/state.json
    systemctl start snapd.{service,socket}

    snap download --${CORE_CHANNEL} ubuntu-core
    snap ack ./ubuntu-core_*.assert
    snap install ./ubuntu-core_*.snap

    snap install test-snapd-python-webserver
    snap interfaces | MATCH ":network +test-snapd-python-webserver"
    snap interfaces | MATCH ":network-bind +.*test-snapd-python-webserver"

    echo "Ensure the webserver is working"
    wait_for_service snap.test-snapd-python-webserver.test-snapd-python-webserver
    curl http://localhost | MATCH "XKCD rocks"

    # restore ubuntu-core-transition-last-retry-time to its previous value and restart the daemon
    systemctl stop snapd.{service,socket}
    cat /var/lib/snapd/state.json | jq -c 'del(.["data"]["ubuntu-core-transition-last-retry-time"])' > state.json.new
    mv state.json.new /var/lib/snapd/state.json
    systemctl start snapd.{service,socket}

    echo "Ensure transition is triggered"
    snap debug ensure-state-soon

    . $TESTSLIB/changes.sh
    while ! snap changes|grep ".*Done.*Transition ubuntu-core to core"; do
        snap changes
        snap change $(change_id "Transition ubuntu-core to core")||true
        sleep 1
    done

    if snap list|grep ubuntu-core; then
        echo "ubuntu-core still installed, transition failed"
        exit 1
    fi
    snap interfaces | MATCH ":network +test-snapd-python-webserver"
    snap interfaces | MATCH ":network-bind +.*test-snapd-python-webserver"
    echo "Ensure the webserver is still working"
    wait_for_service snap.test-snapd-python-webserver.test-snapd-python-webserver
    curl http://localhost | MATCH "XKCD rocks"

    systemctl restart snap.test-snapd-python-webserver.test-snapd-python-webserver
    wait_for_service snap.test-snapd-python-webserver.test-snapd-python-webserver
    echo "Ensure the webserver is working after a snap restart"
    curl http://localhost | MATCH "XKCD rocks"

    echo "Ensure interfaces are connected"
    snap interfaces | MATCH ":core-support.*core:core-support-plug"

    echo "Ensure snap set core works"
    snap set core system.power-key-action=ignore
    if [ "$(snap get core system.power-key-action)" != "ignore" ]; then
        echo "snap get did not return the expected result: "
        snap get core system.power-key-action
        exit 1
    fi