mysql import dari file gz

mysql_import.sh

#!/bin/bash

#============================================================================== 
# SETTINGS
#==============================================================================

# Directory containing the .sql.gz backup files
BACKUP_DIR=/ubuntu/each_db

# MySQL credentials
MYSQL_UNAME=root
MYSQL_PWORD=

# Databases to ignore (you can adjust the regex to match your needs)
IGNORE_DB="(^mysql|_schema$)"

# Include MySQL binaries in PATH if necessary
PATH=$PATH:/usr/local/mysql/bin

#============================================================================== 
# METHODS
#==============================================================================

# Function to generate the MySQL login command
function mysql_login() {
  local mysql_login="-u $MYSQL_UNAME"
  if [ -n "$MYSQL_PWORD" ]; then
    mysql_login+=" -p$MYSQL_PWORD"
  fi
  echo $mysql_login
}

# Function to extract the database name from a backup file (based on your naming convention)
function get_dbname_from_file() {
  local file_name=$(basename "$1")
  echo "${file_name#*.}" | sed 's/.sql.gz//'
}

# Function to check if a database should be ignored
function should_ignore_db() {
  local db_name="$1"
  if [[ $db_name =~ $IGNORE_DB ]]; then
    return 0  # true (ignore)
  else
    return 1  # false (do not ignore)
  fi
}

# Function to create the database if it doesn't exist, with backticks for special characters
function create_database_if_not_exists() {
  local db_name="$1"
  local check_db_exists_sql="SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = '$db_name'"
  local result=$(mysql $(mysql_login) -sse "$check_db_exists_sql")
  
  if [ -z "$result" ]; then
    echo "Creating database: \`$db_name\`"
    mysql $(mysql_login) -e "CREATE DATABASE \`$db_name\`"
  else
    echo "Database \`$db_name\` already exists."
  fi
}

# Function to import a single database, with backticks for special characters
function import_database() {
  local backup_file="$1"
  local db_name=$(get_dbname_from_file "$backup_file")

  if should_ignore_db "$db_name"; then
    echo "Ignoring database: \`$db_name\` (matches IGNORE_DB pattern)"
    return
  fi

  # Create the database if it does not exist
  create_database_if_not_exists "$db_name"

  # Import the data into the database
  echo "Importing \`$db_name\` from $backup_file..."
  gunzip < "$backup_file" | mysql $(mysql_login) $db_name
  echo "Database \`$db_name\` imported successfully."
}

#============================================================================== 
# RUN SCRIPT
#==============================================================================

# Check if backup directory exists
if [ ! -d "$BACKUP_DIR" ]; then
  echo "Backup directory $BACKUP_DIR does not exist!"
  exit 1
fi

# Find all .sql.gz files in the backup directory
backup_files=$(find "$BACKUP_DIR" -type f -name "*.sql.gz")

# Loop through the backup files and import each
for backup_file in $backup_files; do
  import_database "$backup_file"
done

echo "All database imports processed."