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Different approach for db migration

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dragondaddy 2024-01-29 23:00:54 +01:00
parent 0095d3750a
commit b0e957cce8
2 changed files with 42 additions and 14 deletions
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36
scripts/_common.sh
View file

@ -9,6 +9,42 @@
#=================================================
# PERSONAL HELPERS
#=================================================
mariadb-to-pg() {
ynh_print_info --message="Migrating to PostgreSQL database..."
# Retrieve MySQL user and password
mysqlpwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
mysql_db_user="$db_user"
if ynh_mysql_connect_as --user="mmuser" --password="$mysqlpwd" 2> /dev/null <<< ";"; then
# On old instances db_user is `mmuser`
mysql_db_user="mmuser"
fi
# Use pgloader to migrate database content from MariaDB to PostgreSQL
tmpdir="$(mktemp -d)"
cat <<EOT > $tmpdir/commands.load
LOAD DATABASE
FROM mysql://$mysql_db_user:$mysqlpwd@127.0.0.1:3306/$db_name
INTO postgresql://$db_user:$db_pwd@127.0.0.1:5432/$db_name
WITH include no drop, truncate, create no tables,
create no indexes, preserve index names, no foreign keys,
data only, workers = 16, concurrency = 1, prefetch rows = 10000
SET MySQL PARAMETERS
net_read_timeout = '90',
net_write_timeout = '180'
;
EOT
pgloader $tmpdir/commands.load
# Remove the MariaDB database
ynh_mysql_remove_db --db_user=$mysql_db_user --db_name=$db_name
}
#=================================================
# EXPERIMENTAL HELPERS

20
scripts/upgrade
View file

@ -57,20 +57,12 @@ fi
# MIGRATING DATABASE
#=================================================
if mysqlshow | grep -q "^| $db_name "; then
ynh_script_progression --message="Creating a PostgreSQL database..." --weight=10
postgresql_db_pwd=$(ynh_string_random --length=24)
ynh_app_setting_set --app=$app --key=postgresql_db_pwd --value=$postgresql_db_pwd
ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$postgresql_db_pwd
# Migrating from MySQL to PostgreSQL
pgloader mysql://$db_user:$db_pwd@localhost:3306/$db_name postgresql://$db_user:$postgresql_db_pwd@localhost:5432/$db_name
# Removinging MySQL database
ynh_mysql_remove_db --db_user=$db_user --db_name=$db_name
else
ynh_print_info --message="No migration needed"
# Check if using MariaDB
# This migration should be done before the upgrade
if mysqlshow | grep -q "^| $db_name "; then
# Migrate the database from MySQL/MariaDB to PostgreSQL
remove_psql_in_case_of_error=1
mariadb-to-pg
fi
#=================================================