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mysqldumpsplitter.sh
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@ -1,6 +1,6 @@
#!/bin/sh
#!/bin/bash
# Current Version: 6.1
# Current Version: 8
# Extracts database, table, all databases, all tables or tables matching on regular expression from the mysqldump.
# Includes output compression options.
# By: Kedar Vaijanapurkar
@ -9,30 +9,12 @@
# Follow GIT: https://github.com/kedarvj/mysqldumpsplitter/
## Version Info:
# Ver. 1.0: Feb 11, 2010
# ... Initial version extract table(s) based on name, regexp or all of them from database-dump.
# Ver. 2.0: Feb, 2015
# ... Added database extract and compression
# Ver. 3.0: March, 2015
# ... Complete rewrite.
# ... Extract all databases.
# Ver. 4.0: March, 2015
# ... More validations and bug fixes.
# ... Support for config file.
# ... Detecting source dump types (compressed/sql).
# ... Support for compressed backup and bz2 format.
# Credit: Andrzej Wroblewski (andrzej.wroblewski@packetstorm.pl) for his inputs on compressed backup & bz2 support.
# Ver. 5.0: Apr, 2015
# ... Describing the dump, listing all databases and tables
# ... Extracting one or more tables from single database
# Ver. 6.1: Oct, 2015
# ... Bug fixing in REGEXP extraction functionlity
# ... Bug fixing in describe functionality
# ... Preserving time_zone & charset env settings in extracted sqls.
# Credit: @PeterTheDBA helped understanding the possible issues with environment variable settings included in first 17 lines of mysqldump.
##
# Ver. 8: Apr 30, 2023
# ... Faster mysqldumpsplitter
# IMPORTANT
# This is still ongoing work and not all the functionalities are in place. Aim is to optimize the existing mysqldumpsplitter flow.
#
# ToDo: Work with straming input
## Formating Colour
# Text color variables
txtund=$(tput sgr 0 1) # Underline
@ -58,191 +40,98 @@ COMPRESSION='gzip';
DECOMPRESSION='cat';
VERSION=6.1
## Usage Description
usage()
# Create a directory to store the extracted databases and tables
mkdir -p extracted_data
# Initialize variables to hold the current database and table names
current_db=""
current_table=""
ignore_db_filter=1 # if only specific database needs to be downloaded
ignore_db_table_filter=1 # database and table need to be extracted
dump_splitter()
{
echo "\n\t\t\t\t\t\t\t${txtgrn}${txtund}************ Usage ************ \n"${txtrst};
echo "${txtgrn}sh mysqldumpsplitter.sh --source filename --extract [DB|TABLE|DBTABLES|ALLDBS|ALLTABLES|REGEXP] --match_str string --compression [gzip|pigz|bzip2|xz|pxz|none] --decompression [gzip|pigz|bzip2|xz|pxz|none] --output_dir [path to output dir] [--config /path/to/config] ${txtrst}"
echo "${txtund} ${txtrst}"
echo "OPTIONS:"
echo "${txtund} ${txtrst}"
echo " --source: mysqldump filename to process. It could be a compressed or regular file."
echo " --desc: This option will list out all databases and tables."
echo " --extract: Specify what to extract. Possible values DB, TABLE, ALLDBS, ALLTABLES, REGEXP"
echo " --match_str: Specify match string for extract command option."
echo " --compression: gzip/pigz/bzip2/xz/pxz/none (default: gzip). Extracted file will be of this compression."
echo " --decompression: gzip/pigz/bzip2/xz/pxz/none (default: gzip). This will be used against input file."
echo " --output_dir: path to output dir. (default: ./out/)"
echo " --config: path to config file. You may use --config option to specify the config file that includes following variables."
echo "\t\tSOURCE=
\t\tEXTRACT=
\t\tCOMPRESSION=
\t\tDECOMPRESSION=
\t\tOUTPUT_DIR=
\t\tMATCH_STR=
"
echo "${txtund} ${txtrst}"
echo "Ver. $VERSION"
exit 0;
}
# Loop through each line in the dump file
cat $SOURCE | while read -r line; do
# Check if the current line defines a new database
if echo "$line" | grep -Eqwi "^-- Current Database"; then
# Extract the database name from the line
db=$(echo $line | sed -E "s/.*\`(.+)\`.*/\1/")
## Parsing and processing input
parse_result()
{
# Update the current database name
current_db=$db
# Reset to OFF
ignore_db_table_filter=1
ignore_db_filter=1
## Validate SOURCE is provided and exists
if [ -z $SOURCE ]; then
echo "${txtred}ERROR: Source file not specified or does not exist. (Entered: $SOURCE)${txtrst}"
echo "${txtgrn}* Make sure --source is first argument. ${txtrst}";
exit 2;
elif [ ! -f $SOURCE ]; then
echo "${txtred}ERROR: Source file does not exist. (Entered: $SOURCE)${txtrst}"
exit 2;
echo "${txtwht}Current Database $current_db ${txtrst}"
echo "---------------------------------------"
if [[ $EXTRACT == 'DB' ]]; then
if [[ $db != $MATCH_STR ]]; then
echo "${txtred}Ignoring Database $db ${txtrst}"
ignore_db_filter=1
continue;
else
echo "${txtgrn}Extracting Database $db ${txtrst}"
ignore_db_filter=0
fi
# If this database needs to be ignored, continue to next line
[[ $ignore_db_filter == 1 ]] && continue;
fi
## Parse Extract Operation
case $EXTRACT in
ALLDBS|ALLTABLES|DESCRIBE )
if [ "$MATCH_STR" != '' ]; then
echo "${txtylw}Ignoring option --match_string.${txtrst}"
fi;
;;
DB|TABLE|REGEXP|DBTABLE)
if [ "$MATCH_STR" = '' ]; then
echo "${txtred}ERROR: Expecting input for option --match_string.${txtrst}"
exit 1;
fi;
;;
* ) echo "${txtred}ERROR: Please specify correct option for --extract.${txtrst}"
usage;
esac;
## Parse compression
if [ "$COMPRESSION" = 'none' ]; then
COMPRESSION='cat';
EXT="sql"
echo "${txtgrn}Setting no compression.${txtrst}";
elif [ "$COMPRESSION" = 'pigz' ]; then
which $COMPRESSION &>/dev/null
if [ $? -ne 0 ]; then
echo "${txtred}WARNING:$COMPRESSION appears having issues, using default gzip.${txtrst}";
COMPRESSION="gzip";
fi;
echo "${txtgrn}Setting compression as $COMPRESSION.${txtrst}";
EXT="sql.gz"
elif [ "$COMPRESSION" = 'bzip2' ]; then
which $COMPRESSION &>/dev/null
if [ $? -ne 0 ]; then
echo "${txtred}WARNING:$COMPRESSION appears having issues, using default gzip.${txtrst}";
COMPRESSION="gzip";
fi;
echo "${txtgrn}Setting compression as $COMPRESSION.${txtrst}";
EXT="sql.bz2";
elif [ "$COMPRESSION" = 'xz' ]; then
which $COMPRESSION &>/dev/null
if [ $? -ne 0 ]; then
echo "${txtred}WARNING:$COMPRESSION appears having issues, using default gzip.${txtrst}";
COMPRESSION="gzip";
fi;
echo "${txtgrn}Setting compression as $COMPRESSION.${txtrst}";
EXT="sql.xz";
elif [ "$COMPRESSION" = 'pxz' ]; then
which $COMPRESSION &>/dev/null
if [ $? -ne 0 ]; then
echo "${txtred}WARNING:$COMPRESSION appears having issues, using default gzip.${txtrst}";
COMPRESSION="gzip";
fi;
echo "${txtgrn}Setting compression as $COMPRESSION.${txtrst}";
EXT="sql.xz";
else
COMPRESSION='gzip';
echo "${txtgrn}Setting compression $COMPRESSION (default).${txtrst}";
EXT="sql.gz"
fi;
fi
## Parse decompression
if [ "$DECOMPRESSION" = 'none' ]; then
DECOMPRESSION='cat';
echo "${txtgrn}Setting no decompression.${txtrst}";
elif [ "$DECOMPRESSION" = 'pigz' ]; then
which $DECOMPRESSION &>/dev/null
if [ $? -ne 0 ]; then
echo "${txtred}WARNING:$DECOMPRESSION appears having issues, using default gzip.${txtrst}";
DECOMPRESSION="gzip -d -c";
else
DECOMPRESSION="pigz -d -c";
fi;
echo "${txtgrn}Setting decompression as $DECOMPRESSION.${txtrst}";
elif [ "$DECOMPRESSION" = 'bzip2' ]; then
which $DECOMPRESSION &>/dev/null
if [ $? -ne 0 ]; then
echo "${txtred}WARNING:$DECOMPRESSION appears having issues, using default gzip.${txtrst}";
DECOMPRESSION="gzip -d -c";
else
DECOMPRESSION="bzip2 -d -c";
fi;
echo "${txtgrn}Setting decompression as $DECOMPRESSION.${txtrst}";
elif [ "$DECOMPRESSION" = 'xz' ]; then
which $DECOMPRESSION &>/dev/null
if [ $? -ne 0 ]; then
echo "${txtred}WARNING:$DECOMPRESSION appears having issues, using default gzip.${txtrst}";
DECOMPRESSION="gzip -d -c";
else
DECOMPRESSION="xz -d -c";
fi;
echo "${txtgrn}Setting decompression as $DECOMPRESSION.${txtrst}";
elif [ "$DECOMPRESSION" = 'pxz' ]; then
which $DECOMPRESSION &>/dev/null
if [ $? -ne 0 ]; then
echo "${txtred}WARNING:$DECOMPRESSION appears having issues, using default gzip.${txtrst}";
DECOMPRESSION="gzip -d -c";
else
DECOMPRESSION="pxz -d -c";
fi;
echo "${txtgrn}Setting decompression as $DECOMPRESSION.${txtrst}";
else
DECOMPRESSION="gzip -d -c";
echo "${txtgrn}Setting decompression $DECOMPRESSION (default).${txtrst}";
fi;
# Check if the current line defines a new table
if echo "$line" | grep -Eqwi "^-- Table structure for table"; then
# Extract the table name from the line
table=$(echo $line | sed -E "s/-- Table structure for table.*\`(.+)\`.*/\1/")
# Set the current table name
current_table=$table
## Verify file type:
filecommand=`file $SOURCE`
echo $filecommand | grep "compressed" 1>/dev/null
if [ `echo $?` -eq 0 ]
then
echo "${txtylw}File $SOURCE is a compressed dump.${txtrst}"
if [ "$DECOMPRESSION" = 'cat' ]; then
echo "${txtred} The input file $SOURCE appears to be a compressed dump. \n While the decompression is set to none.\n Please specify ${txtund}--decompression [gzip|bzip2|pigz|xz|pxz]${txtrst}${txtred} argument.${txtrst}";
exit 1;
fi;
else
echo "${txtylw}File $SOURCE is a regular dump.${txtrst}"
if [ "$DECOMPRESSION" != 'cat' ]; then
echo "${txtred} Default decompression method for source is gzip. \n The input file $SOURCE does not appear a compressed dump. \n ${txtylw}We will try using no decompression. Please consider specifying ${txtund}--decompression none${txtrst}${txtylw} argument.${txtrst}";
DECOMPRESSION='cat'; ## Auto correct decompression to none for regular files.
fi;
fi;
if [[ $EXTRACT == 'DBTABLE' ]]; then
MATCH_DB=`echo $MATCH_STR | awk -F "." {'print $1'}`
MATCH_TBLS=`echo $MATCH_STR | awk -F "." {'print $2'}`
if [[ $db != $MATCH_DB ]]; then
ignore_db_filter=1
ignore_db_table_filter=1
echo "${txtred} Ignoring Table $db.$table ${txtrst} --- db=$ignore_db_filter dbtbl=$ignore_db_table_filter "
continue;
else
# Create a directory for the current database
mkdir -p extracted_data/$db
if [[ $table != $MATCH_TBLS ]]; then
ignore_db_table_filter=1
ignore_db_filter=1
echo "${txtred}Ignoring Table $db.$table ${txtrst} --- db=$ignore_db_filter dbtbl=$ignore_db_table_filter"
else
ignore_db_filter=0
ignore_db_table_filter=0
echo "${txtgrn}Extracting Table $db.$table ${txtrst}--- db=$ignore_db_filter dbtbl=$ignore_db_table_filter"
fi
fi
fi
fi
# Ignore if for DB, ignore_db_filter is ON (1)
[[ $ignore_db_filter == 1 && $EXTRACT == 'DB' ]] && continue;
# Output directory
if [ "$OUTPUT_DIR" = "" ]; then
OUTPUT_DIR="out";
fi;
mkdir -p $OUTPUT_DIR
if [ $? -eq 0 ]; then
echo "${txtgrn}Setting output directory: $OUTPUT_DIR.${txtrst}";
else
echo "${txtred}ERROR:Issue while checking output directory: $OUTPUT_DIR.${txtrst}";
exit 2;
fi;
# Ignore if for DB, ignore_db_table_filter is ON (1)
[[ $ignore_db_table_filter == 1 && $EXTRACT == 'DBTABLE' ]] && continue;
echo "${txtylw}Processing: Extract $EXTRACT $MATCH_STR from $SOURCE with compression option as $COMPRESSION and output location as $OUTPUT_DIR${txtrst}";
# Write the current line to the SQL file for the current database and table
echo "$line" >> extracted_data/$current_db/$current_table.sql
continue
done
}
##
# Include first 17 lines of full mysqldump - preserve time_zone/charset/environment variables.
include_dump_info()
{
@ -259,103 +148,33 @@ include_dump_info()
echo "" | $COMPRESSION >> $OUTPUT_DIR/$MATCH_STR.$EXT
}
## Actual dump splitting
dump_splitter()
## Usage Description
usage()
{
case $EXTRACT in
DB)
# Include first 17 lines of standard mysqldump to preserve time_zone and charset.
include_dump_info $MATCH_STR
echo "Extracting Database: $MATCH_STR";
$DECOMPRESSION $SOURCE | sed -n "/^-- Current Database: \`$MATCH_STR\`/,/^-- Current Database: /p" | $COMPRESSION >> $OUTPUT_DIR/$MATCH_STR.$EXT
echo "${txtbld} Database $MATCH_STR extracted from $SOURCE at $OUTPUT_DIR${txtrst}"
;;
TABLE)
# Include first 17 lines of standard mysqldump to preserve time_zone and charset.
include_dump_info $MATCH_STR
#Loop for each tablename found in provided dumpfile
echo "Extracting $MATCH_STR."
#Extract table specific dump to tablename.sql
$DECOMPRESSION $SOURCE | sed -n "/^-- Table structure for table \`$MATCH_STR\`/,/^-- Table structure for table/p" | $COMPRESSION >> $OUTPUT_DIR/$MATCH_STR.$EXT
echo "${txtbld} Table $MATCH_STR extracted from $SOURCE at $OUTPUT_DIR${txtrst}"
;;
ALLDBS)
for dbname in $($DECOMPRESSION $SOURCE | grep -aE "^-- Current Database: " | awk -F"\`" {'print $2'})
do
# Include first 17 lines of standard mysqldump to preserve time_zone and charset.
include_dump_info $dbname
echo "Extracting Database $dbname..."
#Extract database specific dump to database.sql.gz
$DECOMPRESSION $SOURCE | sed -n "/^-- Current Database: \`$dbname\`/,/^-- Current Database: /p" | $COMPRESSION >> $OUTPUT_DIR/$dbname.$EXT
DB_COUNT=$((DB_COUNT+1))
echo "${txtbld}Database $dbname extracted from $SOURCE at $OUTPUT_DIR/$dbname.$EXT${txtrst}"
done;
echo "${txtbld}Total $DB_COUNT databases extracted.${txtrst}"
;;
ALLTABLES)
for tablename in $($DECOMPRESSION $SOURCE | grep -a "Table structure for table " | awk -F"\`" {'print $2'})
do
# Include first 17 lines of standard mysqldump to preserve time_zone and charset.
include_dump_info $tablename
#Extract table specific dump to tablename.sql
$DECOMPRESSION $SOURCE | sed -n "/^-- Table structure for table \`$tablename\`/,/^-- Table structure for table/p" | $COMPRESSION >> $OUTPUT_DIR/$tablename.$EXT
TABLE_COUNT=$((TABLE_COUNT+1))
echo "${txtbld}Table $tablename extracted from $DUMP_FILE at $OUTPUT_DIR/$tablename.$EXT${txtrst}"
done;
echo "${txtbld}Total $TABLE_COUNT tables extracted.${txtrst}"
;;
REGEXP)
TABLE_COUNT=0;
for tablename in $($DECOMPRESSION $SOURCE | grep -aE "Table structure for table \`$MATCH_STR" | awk -F"\`" {'print $2'})
do
# Include first 17 lines of standard mysqldump to preserve time_zone and charset.
include_dump_info $tablename
echo "Extracting $tablename..."
#Extract table specific dump to tablename.sql
$DECOMPRESSION $SOURCE | sed -n "/^-- Table structure for table \`$tablename\`/,/^-- Table structure for table/p" | $COMPRESSION >> $OUTPUT_DIR/$tablename.$EXT
echo "${txtbld}Table $tablename extracted from $DUMP_FILE at $OUTPUT_DIR/$tablename.$EXT${txtrst}"
TABLE_COUNT=$((TABLE_COUNT+1))
done;
echo "${txtbld}Total $TABLE_COUNT tables extracted.${txtrst}"
;;
DBTABLE)
MATCH_DB=`echo $MATCH_STR | awk -F "." {'print $1'}`
MATCH_TBLS=`echo $MATCH_STR | awk -F "." {'print $2'}`
if [ "$MATCH_TBLS" = "*" ]; then
MATCH_TBLS='';
fi;
TABLE_COUNT=0;
for tablename in $( $DECOMPRESSION $SOURCE | sed -n "/^-- Current Database: \`$MATCH_DB\`/,/^-- Current Database: /p" | grep -aE "^-- Table structure for table \`$MATCH_TBLS" | awk -F '\`' {'print $2'} )
do
echo "Extracting $tablename..."
#Extract table specific dump to tablename.sql
# Include first 17 lines of standard mysqldump to preserve time_zone and charset.
include_dump_info $tablename
$DECOMPRESSION $SOURCE | sed -n "/^-- Current Database: \`$MATCH_DB\`/,/^-- Current Database: /p" | sed -n "/^-- Table structure for table \`$tablename\`/,/^-- Table structure for table/p" | $COMPRESSION >> $OUTPUT_DIR/$tablename.$EXT
echo "${txtbld}Table $tablename extracted from $DUMP_FILE at $OUTPUT_DIR/$tablename.$EXT${txtrst}"
TABLE_COUNT=$((TABLE_COUNT+1))
done;
echo "${txtbld}Total $TABLE_COUNT tables extracted from $MATCH_DB.${txtrst}"
;;
*) echo "Wrong option, exiting.";
usage;
exit 1;;
esac
echo "\n\t\t\t\t\t\t\t${txtgrn}${txtund}************ Usage ************ \n"${txtrst};
echo "${txtgrn}sh mysqldumpsplitter.sh --source filename --extract [DB|TABLE|DBTABLES|ALLDBS|ALLTABLES|REGEXP] --match_str string --compression [gzip|pigz|bzip2|xz|pxz|none] --decompression [gzip|pigz|bzip2|xz|pxz|none] --output_dir [path to output dir] [--config /path/to/config] ${txtrst}"
echo "${txtund} ${txtrst}"
echo "OPTIONS:"
echo "${txtund} ${txtrst}"
echo " --source: mysqldump filename to process. It could be a compressed or regular file."
echo " --desc: This option will list out all databases and tables."
echo " --extract: Specify what to extract. Possible values DB, TABLE, ALLDBS, ALLTABLES, REGEXP"
echo " --match_str: Specify match string for extract command option."
echo " --compression: gzip/pigz/bzip2/xz/pxz/none (default: gzip). Extracted file will be of this compression."
echo " --decompression: gzip/pigz/bzip2/xz/pxz/none (default: gzip). This will be used against input file."
echo " --output_dir: path to output dir. (default: ./out/)"
echo " --config: path to config file. You may use --config option to specify the config file that includes following variables."
echo -e "\t\tSOURCE=
\t\tEXTRACT=
\t\tCOMPRESSION=
\t\tDECOMPRESSION=
\t\tOUTPUT_DIR=
\t\tMATCH_STR=
"
echo "${txtund} ${txtrst}"
echo "Ver. $VERSION"
exit 0;
}
missing_arg()
@ -409,7 +228,7 @@ while [ "$1" != "" ]; do
echo "-------------------------------";
echo "Database\t\tTables";
echo "-------------------------------";
$DECOMPRESSION $SOURCE | grep -aE "(^-- Current Database:|^-- Table structure for table)" | sed 's/-- Current Database: /-------------------------------\n/' | sed 's/-- Table structure for table /\t\t/'| sed 's/`//g' ;
$DECOMPRESSION $SOURCE | grep -aE "(^-- Current Database:|^-- Table structure for table)" | sed "s/-- Current Database: /-------------------------------\n/" | sed 's/-- Table structure for table /\t\t/' | sed 's/`//g' ;
echo "-------------------------------";
exit 0;
;;
@ -432,6 +251,4 @@ while [ "$1" != "" ]; do
shift
done
parse_result
dump_splitter
exit 0;