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# PostgreSQL related helper functions.

# PostgreSQL tests require beakerlib:
# https://fedorahosted.org/beakerlib/

. /usr/share/beakerlib/beakerlib.sh || exit 1

dtf_postgresql_check_started()
{
    service postgresql status &>/dev/null
    rlAssertEquals "service postgresql should be started" $? 0
}

dtf_postgresql_check_stopped()
{
    service postgresql status &>/dev/null
    rlAssertEquals "service postgresql should be stopped" $? 3
}

dtf_postgresql_phase_cleanup()
{
    rlPhaseStartCleanup
    rlServiceStop postgresql
    dtf_postgresql_check_stopped
    rlRun "rm -rf /var/lib/pgsql/data"
    rlRun "rm -rf /var/lib/pgsql/*.log"
    rlPhaseEnd
}

dtf_postgresql_checkphase()
{
    rlPhaseStart FAIL "Check"
        rlAssertRpm postgresql-server

        dtf_postgresql_check_stopped

        rlAssertNotExists "/var/lib/pgsql/data/PG_VERSION"
        while read line; do
            rlAssertNotExists "$line"
        done < <(find /var/lib/pgsql/ -maxdepth 1 -name '*.log')

        rlAssert0 "run under root user" "$(id -u)"

        rlGetPhaseState
        test $? -gt 0 \
            && echo >&2 "Check phase failed." && exit 1
    rlPhaseEnd
}

dtf_postgresql_test_init()
{
    rlJournalStart
    dtf_postgresql_checkphase
    rlPhaseStartTest
}

dtf_postgresql_test_finish()
{
    rlPhaseEnd
    dtf_generate_results_tarball "$BEAKERLIB_DIR"
    dtf_postgresql_phase_cleanup
    rlJournalEnd
    rlGetTestState || return 1
}

dtf_postgresql_unpack_remote_data()
(
    local tarball="$1"
    cd /var/lib/pgsql || return 1
    set -o pipefail
    echo "downloading '$tarball'"
    curl "$tarball" | tar -xzf -
)

# Detect current distribution and print set of "distro version action" lines
# where DISTRO may be rhel/fedora, VERSION may be e.g. 6.6 for rhel or 20 for
# Fedora.  ACTION is either run or upgrade and it means whether currently
# installed PostgreSQL server is able to RUN the older data from DISTRO-VERSION
# or it should be first upgraded.
#
# What versions are currently in supported Fedora versions:
#
#       f20 & f21       (9.3.8)
#       f22 & rawhide   (9.4.3)
#
# Older Fedora versions:
#
#       f17             (9.1.9)
#       f18             (9.2.5)
#       f19             (9.2.9)

dtf_postgresql_upgrade_matrix()
{
    if rlIsFedora 19; then
        # echo fedora 17 upgrade
        # echo fedora 18 run
        echo fedora 19 run
    elif rlIsFedora 20; then
        # echo fedora 18 upgrade
        echo fedora 19 upgrade
        echo fedora 20 run
    elif rlIsFedora 21; then
        echo fedora 19 upgrade
        echo fedora 20 run
        echo fedora 21 run
    elif rlIsFedora 22; then
        echo fedora 20 upgrade
        echo fedora 21 upgrade
    elif rlIsFedora 23; then
        echo fedora 20 upgrade
        echo fedora 21 upgrade
        echo fedora 22 run
    fi
}

dtf_postgresql_cb_upgrade()
{
    local dashdash=""
    if rlIsFedora 22; then
        dashdash="--"
    fi
    rlRun "postgresql-setup $dashdash""upgrade"
}

dtf_postgresql_cb_upgrade_select()
{
    cat
}

dtf_postgresql_upgrade_tour()
{
    local arch=$(uname -i)
    local rv=0

    items="$(dtf_postgresql_upgrade_matrix | dtf_postgresql_cb_upgrade_select)"
    test "$items" = "$(:)" && return 0

    while read distro version action; do
        echo "--> Performing upgrade: $distro-$version - $action"

        url="$1/$distro/$version/$arch/$2"

        dtf_postgresql_unpack_remote_data "$url" || return 1

        case "$action" in
        upgrade)
            dtf_postgresql_cb_upgrade
            if test $? -ne 0; then
                rv=1
                find /var/lib/pgsql -maxdepth 1 -name '*.log' | \
                while read line; do
                    echo "====== reading log $line ======"
                    cat "$line"
                done
            fi
            ;;
        *)
            ;;
        esac

        rlServiceStart postgresql
        dtf_postgresql_check_started
        rlServiceStop postgresql
        dtf_postgresql_check_stopped

        rm -rf /var/lib/pgsql/data
    done <<<"$items"

    return $rv
}

dtf_postgresql_initdb()
{
    if rlIsFedora 18 19 20 21 || rlIsRHEL 5 6 7; then
        rlRun "postgresql-setup initdb"
    else
        rlRun "postgresql-setup --initdb"
    fi
}

dtf_postgresql_data_mirror()
{
    if test -z "$___mirror_chosen"; then
        for i in "${dtf_dataurls[@]}"; do
            echo >&2 "trying $i"
            timeout 3 curl "$i" >/dev/null && ___mirror_chosen="$i" && break
        done
        test -z "$___mirror_chosen" && return 1
    fi

    echo "$___mirror_chosen"
}