#!/bin/bash
#
# Copyright(c) 2012-2019 Intel Corporation
# SPDX-License-Identifier: BSD-3-Clause-Clear
#

# The line below specified that line under it should be used as the test's short description when launching test via run_tests script.
# The text should not be longer than 80 chars - if it is, the script will strip addititonal characters
# DESCRIPTION Copy file greater then cache

# The line below says that this test should be included in BVT - it will be launched, when we use "./run_tests -b"

# USE_IN_NIGHTLY

# Standard beginning for every test - get the main tests directory and
# link the cas_lib file for CAS API, then use "start_test $*" to pass params
# and do other necessary checks and setup.
TESTS_DIR="$(dirname $0)/../"
. $TESTS_DIR/cas_lib
start_test $*

CACHE_DEVICE_SIZE=500M
CORE_DEVICE_SIZE=20G
TEST_DEVICE=${DEVICE_NAME}1-1
TEST_FILE=/tmp/cas.testfile

wb_init() {
    # Use CACHE_DEVICE and CORE_DEVICE provided by configuration file and remove partitions from those devices
    TARGET_DEVICE_OPTION="$CACHE_DEVICE" remove_partitions
    TARGET_DEVICE_OPTION="$CORE_DEVICE" remove_partitions

    # Create 1 primary partitions on CACHE_DEVICE
    TARGET_DEVICE_OPTION="$CACHE_DEVICE" PARTITION_SIZE_OPTION=$CACHE_DEVICE_SIZE PARTITION_IDS_OPTION="1" make_primary_partitions

    # Create 1 primary partitions on CORE_DEVICE
    TARGET_DEVICE_OPTION="$CORE_DEVICE" PARTITION_SIZE_OPTION=$CORE_DEVICE_SIZE PARTITION_IDS_OPTION="1" make_primary_partitions

    # Make ext3 file system
    TARGET_DEVICE_OPTION="${CORE_DEVICE}1" FILESYSTEM_TYPE="ext3" make_filesystem

    # Start cache on CACHE_DEVICE1
    CACHE_MODE_OPTION="wb" CACHE_ID_OPTION="1" CACHE_DEVICE_OPTION="${CACHE_DEVICE}1" start_cache

    # Add a core device using CORE_DEVICE1
    CACHE_ID_OPTION="1" CORE_DEVICE_OPTION="${CORE_DEVICE}1" add_core

    #Mount file system
    CACHE_ID_OPTION="1" CORE_ID_OPTION="1" mount_cache
}

wb_deinit() {
    run_cmd "umount ${MOUNTPOINT}-1-1"

    # Remove the core device from cache
    CACHE_ID_OPTION="1" CORE_ID_OPTION="1" remove_core

    # Clean up after the test
    CACHE_ID_OPTION="1" stop_cache
}

wb_test() {
        local L_TEST_FILE_CACHE
        local L_MD5_1
        local L_MD5_2

        test_log_trace "Prepare test file =${TEST_FILE}"
        dd if=/dev/urandom of=${TEST_FILE} bs=10M count=$(get_pages 3G 10M)

        L_MD5_1=$(md5sum -b $TEST_FILE | awk '{ print $1 }')
        test_log_trace "MD5 check sum of ${TEST_FILE} : $L_MD5_1"

        # Copy test file into core file system
        cp ${TEST_FILE} ${MOUNTPOINT}-1-1
        if [ $? != 0 ]
        then
            test_log_trace "Cannot copy file into core filesystem"
            return 1
        fi
        test_log_trace "Copy ${TEST_FILE} to ${MOUNTPOINT}-1-1"

        # Perform sync
        test_log_trace "Sync"
        sync && echo 1 > /proc/sys/vm/drop_caches

        # Get check sum of copied file
        L_TEST_FILE_CACHE=$(basename $TEST_FILE)
        L_MD5_2=$(md5sum -b "${MOUNTPOINT}-1-1/${L_TEST_FILE_CACHE}" | awk '{ print $1 }')
        if [ $? != 0 ]
        then
            test_log_trace "Cannot calculate checksum of file on core filesystem"
            return 1
        fi
        test_log_trace "MD5 check sum of ${MOUNTPOINT}-1-1/${L_TEST_FILE_CACHE} : $L_MD5_2"

        if [ "$L_MD5_1" != "$L_MD5_2" ]
        then
            test_log_trace "MD5 sum ERROR"
            return 1
        fi

        # Perform sync
        test_log_trace "Sync"
        sync && echo 1 > /proc/sys/vm/drop_caches

        # remove test file
        rm -f $TEST_FILE

        return 0
}

#
# START TEST
#

test_log_start

run_cmd wb_init

run_cmd wb_test

run_cmd wb_deinit

test_log_stop

#
# END TEST
#

# Always return 0 at the end of the test - if at any point something has failed
# in the API functions, test will end and return a proper result.
# If you need to check other things during the test and end the test earlier, you
# should end the test using "end_test $retval" function
end_test 0