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#! /bin/bash
#
# nginx_test.sh
#
# Run specified app using LD_PRELOAD to fetch a page from
# nginx running in vpp1 net-namespace.
#
# Specify the following environment variables:
#
# STRACE_ONLY - Run app with strace instead of LD_PRELOAD.
# TEST_APP - App to run (default: curl)
#
# Configuration variables.
#
vpp_dk_name="VPP-TEST-NGINX"
# Comment out the next line to run the VPP release version
debug="_debug"
vpp_app="$WS_ROOT/build-root/install-vpp${debug}-native/vpp/bin/vpp"
check_for_vpp() {
local grep_for_vpp="ps -eaf|grep -v grep|grep \"bin/vpp\""
running_vpp="$(eval $grep_for_vpp)"
}
# Verify Environment.
if [ -z "$WS_ROOT" ] ; then
echo "ERROR: WS_ROOT environment variable not set!" >&2
echo " Please set WS_ROOT to VPP workspace root directory." >&2
exit 1
fi
if [ -z "$LDP_DIR" ] ; then
echo "WARNING: LDP_DIR environment variable is not set!"
echo " Sourcing $WS_ROOT/extras/vcl-ldpreload/env.sh"
source $WS_ROOT/extras/vcl-ldpreload/env.sh
fi
TEST_APP="${TEST_APP:-curl}"
LDP_TEST_DIR="${LDP_TEST_DIR:-${LDP_DIR}/test}"
LDP_LIB="${LDP_LIB:-${VCL_LDPRELOAD_LIB_DIR}/libvcl_ldpreload.so.0.0.0}"
if [ ! -f "$LDP_LIB" ] ; then
echo "ERROR: Missing VCL-LDPRELOAD Library: $LDP_LIB"
echo " See $LDP_DIR/README.md for build instructions!"
exit 1
fi
if [ -z "$(docker ps -qf name=$vpp_dk_name)" ] ; then
echo "Starting NGINX in docker container ($vpp_dk_name)"
docker run --rm --name $vpp_dk_name -v $LDP_TEST_DIR/common/nginx_welcome.html:/usr/share/nginx/html/index.html:ro -d nginx
echo "Configuring network interfaces"
sudo ip link del dev vpp_dk
sudo ip link add name vpp_dk type veth peer name vpp1
sudo ip link set dev vpp_dk up
sudo ethtool --offload vpp_dk rx off tx off
sudo ip link set dev vpp1 up
sudo ethtool --offload vpp1 rx off tx off
sudo ip link set dev lo up
sudo brctl addif docker0 vpp_dk
fi
export LD_LIBRARY_PATH="$WS_ROOT/build-root/install-vpp${debug}-native/vpp/lib64/:$LDP_DIR/src/.libs:"
# Extract nginx IPv4 address from docker bridge
#
nginx_addr=$(docker network inspect bridge | grep IPv4Address | awk -e '{print $2}' | sed -e 's,/16,,' -e 's,",,g' -e 's/,//')
if [ -z "$nginx_addr" ] ; then
echo "ERROR: Unable to determine docker container address!"
exit 1
fi
if [ -n "$STRACE_ONLY" ] ; then
echo "Running strace -tt $TEST_APP http://$nginx_addr"
strace -tt $TEST_APP http://$nginx_addr
else
check_for_vpp
if [ -z "$running_vpp" ] ; then
echo "Starting VPP ('telnet 0 5002' to connect to cli)"
sudo $vpp_app unix { cli-listen localhost:5002 exec $LDP_TEST_DIR/common/vpp_docker.conf } api-segment { gid $(id -g) }
sleep 2
fi
echo "Running LD_PRELOAD=$LDP_LIB $TEST_APP http://$nginx_addr"
LD_PRELOAD=$LDP_LIB $TEST_APP http://$nginx_addr
fi
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