test

#!/bin/bash

# Whenever immutable fields in the topology file of an infra element is
# changed, if the process receives a SIGHUP it will fail to reload the config.

. acceptance/common.sh

TEST_NAME="topo_invalid_reloads"
TEST_TOPOLOGY="topology/Tiny.topo"

IA=${IA:-1-ff00:0:112}
IA_FILE="$(ia_file $IA)"
SRC_AS_FILE="$(as_file $IA)"

TOPO="gen/ISD1/AS$SRC_AS_FILE/topology.json"

test_setup() {
    set -e
    ./scion.sh topology zkclean -c $TEST_TOPOLOGY -d -sd=go -ps=go
    for sd in gen/ISD1/*/*/*.toml; do
        sed -i '/\[logging\.file\]/a FlushInterval = 1' "$sd"
    done
    ./tools/dc start scion_ps$IA_FILE-1 scion_sd$IA_FILE
    docker_status
}

test_run() {
    set -e
    cp "gen/ISD1/AS$SRC_AS_FILE/ps$IA_FILE-1/topology.json" "gen/ISD1/AS$SRC_AS_FILE/"
    test_ps_immutable "ps1-ff00_0_111-1" "gen/ISD1/AS$SRC_AS_FILE/ps$IA_FILE-1/topology.json"
    test_immutable "sd1-ff00_0_111" "gen/ISD1/AS$SRC_AS_FILE/endhost/topology.json"

}

test_ps_immutable() {
    test_immutable $1 $2
    jq '.PathService[].Addrs.IPv4.Public.Addr = "242.42.42.42"' $TOPO | sponge $2
    check_no_reload $1 "Addr"
    jq '.PathService[].Addrs.IPv4.Public.L4Port = 42424' $TOPO | sponge $2
    check_no_reload $1 "L4Port"
}

test_immutable() {
    jq '.ISD_AS = "1-ff00:0:111"' $TOPO | sponge $2
    check_no_reload "$1" "ISD_AS"
    jq '.Core = true' $TOPO | sponge $2
    check_no_reload "$1" "Core"
    jq '.Overlay = "IPv6"' $TOPO | sponge $2
    check_no_reload "$1" "Overlay"
    jq '.MTU = 42' $TOPO | sponge $2
    check_no_reload "$1" "MTU"
}

check_no_reload() {
    ./tools/dc scion kill -s HUP scion_"$1"
    sleep 1
    grep -q "Reloaded topology" "logs/$1.log" || local failed=$?
    if [ -z ${failed+x} ]; then
        echo "FAIL: Successful reload should not be possible. step=( $2 )"
        return 1
    fi
}

print_help() {
    echo
	cat <<-_EOF
	    $PROGRAM name
	        return the name of this test
	    $PROGRAM setup
	        execute only the setup phase.
	    $PROGRAM run
	        execute only the run phase.
	    $PROGRAM teardown
	        execute only the teardown phase.
	_EOF
}

PROGRAM=`basename "$0"`
COMMAND="$1"

case "$COMMAND" in
    name)
        echo $TEST_NAME ;;
    setup|run|teardown)
        "test_$COMMAND" ;;
    *) print_help; exit 1 ;;
esac