#!/bin/bash
# Copyright (c) 2016 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a ght (c) 2016 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not usecopy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -x

RETURN_STATUS=0

cat /etc/hostname
cat /etc/hosts

PYBOT_ARGS="--noncritical MULTI_THREAD"

JOB_ARCHIVE_ARTIFACTS=(log.html output.xml report.html)
LOG_ARCHIVE_ARTIFACTS=(log.html output.xml report.html)
JOB_ARCHIVE_DIR="archive"
LOG_ARCHIVE_DIR="$WORKSPACE/archives"
mkdir -p ${JOB_ARCHIVE_DIR}
mkdir -p ${LOG_ARCHIVE_DIR}

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
export PYTHONPATH=${SCRIPT_DIR}

# Create tmp dir
mkdir ${SCRIPT_DIR}/tmp

# Use tmp dir to store log files
LOG_PATH="${SCRIPT_DIR}/tmp"

OS_ID=$(grep '^ID=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g')
OS_VERSION_ID=$(grep '^VERSION_ID=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g')

if [ "$OS_ID" == "centos" ]; then
    DISTRO="CENTOS"
    PACKAGE="rpm"
    sudo yum install -y python-devel python-virtualenv
elif [ "$OS_ID" == "ubuntu" ]; then
    DISTRO="UBUNTU"
    PACKAGE="deb"
    export DEBIAN_FRONTEND=noninteractive
    sudo apt-get -y update
    sudo apt-get -y install libpython2.7-dev python-virtualenv
else
    echo "$OS_ID is not yet supported."
    exit 1
fi

# 1st step: Download and prepare VPP packages

# Temporarily download VPP packages from nexus.fd.io
if [ "${#}" -ne "0" ]; then
    arr=(${@})
    echo ${arr[0]}
else
    # Download the latest VPP build install packages
    source "${SCRIPT_DIR}/resources/libraries/bash/function/artifacts.sh"
    download_artifacts
    # Need to revert -euo as the rest of script is not optimized for this.
    set +euo pipefail
fi

VIRL_DIR_LOC="/tmp/"
VPP_PKGS=(vpp*.$PACKAGE)
VPP_PKGS_FULL=("${VPP_PKGS[@]/#/${VIRL_DIR_LOC}}")
echo ${VPP_PKGS[@]}

VIRL_TOPOLOGY=$(cat ${SCRIPT_DIR}/VIRL_TOPOLOGY_${DISTRO})
VIRL_RELEASE=$(cat ${SCRIPT_DIR}/VIRL_RELEASE_${DISTRO})

VPP_VER="$( expr match $(ls vpp*.${PACKAGE} | head -n 1) 'vpp[-|_]\(.*\)'.${PACKAGE} )"

set +x
echo "****************************************************************************************************************************************"
echo "1st step: Download VPP packages                                                                                                 FINISHED"
echo "VPP version to be tested: ${VPP_VER}"
echo "****************************************************************************************************************************************"
set -x


# 2nd step: Start virtual env and install requirements

echo Starting virtual env...
virtualenv --system-site-packages env
. env/bin/activate

echo Installing requirements...
pip install -r ${SCRIPT_DIR}/requirements.txt

set +x
echo "****************************************************************************************************************************************"
echo "2nd step: Start virtual env and install requirements                                                                            FINISHED"
echo "****************************************************************************************************************************************"
set -x


# 3rd step: Prepare VIRL system
echo Preparing VIRL system...

VIRL_SERVERS=("10.30.51.28" "10.30.51.29" "10.30.51.30")
VIRL_SERVER=""

VIRL_USERNAME=jenkins-in
VIRL_PKEY=priv_key
VIRL_SERVER_STATUS_FILE="status"
VIRL_SERVER_EXPECTED_STATUS="PRODUCTION"
VIRL_SESSION_EXPIRY="620"

SSH_OPTIONS="-i ${VIRL_PKEY} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o BatchMode=yes -o LogLevel=error"

function ssh_do() {
    echo
    echo "### "  ssh $@
    ssh ${SSH_OPTIONS} $@
}

rm -f ${VIRL_PKEY}
cat > ${VIRL_PKEY} <<EOF
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
EOF
chmod 600 ${VIRL_PKEY}

#
# Pick a random host from the array of VIRL servers, and attempt
# to reach it and verify it's status.
#
# The server must be reachable, and have a "status" file with
# the content "PRODUCTION", to be selected.
#
# If the server is not reachable, or does not have the correct
# status, remove it from the array and start again.
#
# Abort if there are no more servers left in the array.
#
while [[ ! "$VIRL_SERVER" ]]
do
    num_hosts=${#VIRL_SERVERS[@]}
    if [ $num_hosts == 0 ]
    then
        echo "No more VIRL candidate hosts available, failing."
        exit 127
    fi
    element=$[ $RANDOM % $num_hosts ]
    virl_server_candidate=${VIRL_SERVERS[$element]}
    virl_server_status=$(ssh ${SSH_OPTIONS} ${VIRL_USERNAME}@${virl_server_candidate} cat $VIRL_SERVER_STATUS_FILE 2>&1)
    echo VIRL HOST $virl_server_candidate status is \"$virl_server_status\"
    if [ "$virl_server_status" == "$VIRL_SERVER_EXPECTED_STATUS" ]
    then
        # Candidate is in good status. Select this server.
        VIRL_SERVER="$virl_server_candidate"
    else
        # Candidate is in bad status. Remove from array.
        VIRL_SERVERS=("${VIRL_SERVERS[@]:0:$element}" "${VIRL_SERVERS[@]:$[$element+1]}")
    fi
done

# Copy the files to VIRL host
scp ${SSH_OPTIONS} ${VPP_PKGS[@]} \
    ${VIRL_USERNAME}@${VIRL_SERVER}:${VIRL_DIR_LOC}/

result=$?
if [ "${result}" -ne "0" ]; then
    echo "Failed to copy vpp deb files to virl host"
    echo ${result}
    exit ${result}
fi

# Start a simulation on VIRL server
echo "Starting simulation on VIRL server"

function stop_virl_simulation {
    ssh ${SSH_OPTIONS} ${VIRL_USERNAME}@${VIRL_SERVER}\
        "stop-testcase ${VIRL_SID}"
}

VIRL_SID=$(ssh ${SSH_OPTIONS} \
    ${VIRL_USERNAME}@${VIRL_SERVER} \
    "start-testcase -vv --copy ${VIRL_TOPOLOGY} \
    --expiry ${VIRL_SESSION_EXPIRY} \
    --release ${VIRL_RELEASE} ${VPP_PKGS_FULL[@]}")
retval=$?
if [ ${retval} -ne "0" ]; then
    echo "VIRL simulation start failed"
    exit ${retval}
fi

if [[ ! "${VIRL_SID}" =~ session-[a-zA-Z0-9_]{6} ]]; then
    echo "No VIRL session ID reported."
    exit 127
fi

# Upon script exit, cleanup the VIRL simulation execution
trap stop_virl_simulation EXIT
echo ${VIRL_SID}

ssh_do ${VIRL_USERNAME}@${VIRL_SERVER} cat /scratch/${VIRL_SID}/topology.yaml

# Download the topology file from VIRL session
scp ${SSH_OPTIONS} \
    ${VIRL_USERNAME}@${VIRL_SERVER}:/scratch/${VIRL_SID}/topology.yaml \
    topologies/enabled/topology_VIRL.yaml

retval=$?
if [ ${retval} -ne "0" ]; then
    echo "Failed to copy topology file from VIRL simulation"
    exit ${retval}
fi

set +x
echo "****************************************************************************************************************************************"
echo "3rd step: Start the simulation on the VIRL server                                                                               FINISHED"
echo "****************************************************************************************************************************************"
set -x


# 4th step: Run functional test suites

RC=0
MORE_FAILS=0

echo Running functional tests on the VIRL system...

# There are used three iterations of functional tests there
# to check the stability and reliability of the results.
partial_logs=""
for test_set in 1 2 3
do
    echo
    echo Functional test loop: ${test_set}
    echo

    pybot -L TRACE -W 136\
        -v TOPOLOGY_PATH:${SCRIPT_DIR}/topologies/enabled/topology_VIRL.yaml \
        --suite "tests.vpp.func" \
        --include vm_envAND3_node_single_link_topo \
        --include vm_envAND3_node_double_link_topo \
        --exclude PERFTEST \
        --noncritical EXPECTED_FAILING \
        --output ${LOG_PATH}/output_func_test_set${test_set} \
        tests/
    PARTIAL_RC=$(echo $?)
    partial_logs="${partial_logs} ${LOG_PATH}/output_func_test_set${test_set}.xml"
    if [ ${PARTIAL_RC} -eq 250 ]; then
        MORE_FAILS=1
    fi
    RC=$((RC+PARTIAL_RC))
done

set +x
echo "****************************************************************************************************************************************"
echo "4th step: Run functional tests                                                                                                  FINISHED"
echo "****************************************************************************************************************************************"
set -x

# Set RETURN_STATUS=1 if some critical test failed
if [ ! ${RC} -eq 0 ]; then
        RETURN_STATUS=1
fi

# Log the final result
if [ ${RC} -eq 0 ]; then
    set +x
    echo
    echo "========================================================================================================================================"
    echo "Final result of all test loops:                                                                                                 | PASS |"
    echo "All critical tests have passed."
    echo "========================================================================================================================================"
    echo
    set -x
elif [ ${MORE_FAILS} -eq 0 ]; then
    if [ ${RC} -eq 1 ]; then
        HLP_STR="test has"
    else
        HLP_STR="tests have"
    fi
    set +x
    echo
    echo "========================================================================================================================================"
    echo "Final result of all test loops:                                                                                                 | FAIL |"
    echo "${RC} critical ${HLP_STR} failed."
    echo "========================================================================================================================================"
    echo
    set -x
else
    set +x
    echo
    echo "========================================================================================================================================"
    echo "Final result of all test loops:                                                                                                 | FAIL |"
    echo "More then 250 critical tests have failed in one test loop."
    echo "========================================================================================================================================"
    echo
    set -x
fi

# 7th step: Post-processing test data
echo Post-processing test data...

# Rebot output post-processing
rebot --noncritical EXPECTED_FAILING \
      --output output.xml ${partial_logs}

# Remove unnecessary files
rm -f ${partial_logs}

# Archive JOB artifacts in jenkins
for i in ${JOB_ARCHIVE_ARTIFACTS[@]}; do
    cp $( readlink -f ${i} | tr '\n' ' ' ) ${JOB_ARCHIVE_DIR}/
done
# Archive JOB artifacts to logs.fd.io
for i in ${LOG_ARCHIVE_ARTIFACTS[@]}; do
    cp $( readlink -f ${i} | tr '\n' ' ' ) ${LOG_ARCHIVE_DIR}/
done

echo Post-processing finished.

exit ${RETURN_STATUS}