docker-postgresql-multiple-.../create-multiple-postgresql-databases.sh
Hrishikesh 84385cbf2a
Exists check for database and user
-  Added exists check for database and user
-  Added `--dbname "postgres"` in `psql` command
-  Added owner, utf8 encoding, collate and template
2021-06-29 01:46:54 +05:30

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#!/bin/bash
set -e
set -u
function create_user_and_database() {
local database=$1
echo " Creating user and database '$database'"
psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "postgres" <<-EOSQL
SELECT 'CREATE USER ' || LOWER(TRIM('$database')) AS create_user_query WHERE NOT EXISTS (SELECT FROM pg_catalog.pg_roles WHERE rolname = LOWER(TRIM('$database')));\gexec
SELECT 'CREATE DATABASE ' || LOWER(TRIM('$database')) || ' WITH OWNER "$POSTGRES_USER" ENCODING "UTF8" LC_COLLATE = "en_US.UTF-8" LC_CTYPE = "en_US.UTF-8" TEMPLATE="template0"' AS create_table_query WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = LOWER(TRIM('$database')));\gexec
GRANT ALL PRIVILEGES ON DATABASE $database TO $database;
EOSQL
}
if [ -n "$POSTGRES_MULTIPLE_DATABASES" ]; then
echo "Multiple database creation requested: $POSTGRES_MULTIPLE_DATABASES"
for db in $(echo $POSTGRES_MULTIPLE_DATABASES | tr ',' ' '); do
create_user_and_database $db
done
echo "Multiple databases created"
fi