feat(dbtest): Mount DB dumps and create templates

Mount the benchmark dump directory when running
the test database and create a new script for creating
templates from the dumps. This makes it easy to create
pre-populated databases for benchmark tests.

Fixes https://hashicorp.atlassian.net/browse/ICU-4040

testing/dbtest/docker/Dockerfile.11-alpine

@@ -1,6 +1,7 @@
 FROM postgres:11-alpine
 
 ADD init-db.sh /docker-entrypoint-initdb.d/00-init-db.sh
+ADD restore-benchmark-dumps.sh /docker-entrypoint-initdb.d/01-restore-benchmark-dumps.sh
 ADD postgresql.conf /etc/postgresql/postgresql.conf
 
 CMD ["postgres", "-c", "config_file=/etc/postgresql/postgresql.conf"]

testing/dbtest/docker/Dockerfile.12-alpine

@@ -1,6 +1,7 @@
 FROM postgres:12-alpine
 
 ADD init-db.sh /docker-entrypoint-initdb.d/00-init-db.sh
+ADD restore-benchmark-dumps.sh /docker-entrypoint-initdb.d/01-restore-benchmark-dumps.sh
 ADD postgresql.conf /etc/postgresql/postgresql.conf
 
 CMD ["postgres", "-c", "config_file=/etc/postgresql/postgresql.conf"]

testing/dbtest/docker/Dockerfile.13-alpine

@@ -1,6 +1,7 @@
 FROM postgres:13-alpine
 
 ADD init-db.sh /docker-entrypoint-initdb.d/00-init-db.sh
+ADD restore-benchmark-dumps.sh /docker-entrypoint-initdb.d/01-restore-benchmark-dumps.sh
 ADD postgresql.conf /etc/postgresql/postgresql.conf
 
 CMD ["postgres", "-c", "config_file=/etc/postgresql/postgresql.conf"]

testing/dbtest/docker/Dockerfile.alpine

@@ -1,6 +1,7 @@
 FROM postgres:alpine
 
 ADD init-db.sh /docker-entrypoint-initdb.d/00-init-db.sh
+ADD restore-benchmark-dumps.sh /docker-entrypoint-initdb.d/01-restore-benchmark-dumps.sh
 ADD postgresql.conf /etc/postgresql/postgresql.conf
 
 CMD ["postgres", "-c", "config_file=/etc/postgresql/postgresql.conf"]

testing/dbtest/docker/Makefile

@@ -47,6 +47,7 @@ database-up:
 		-e PGDATA=/pgdata \
 		--mount type=tmpfs,destination=/pgdata \
 		-v "$(CWD)/../../../internal/db/schema/migrations":/migrations \
+		-v "$(CWD)/benchmark_dumps":/benchmark_dumps \
 		$(TEST_IMAGE_TAG) \
 		-c 'config_file=/etc/postgresql/postgresql.conf' \
 		$(PG_OPTS) 1> /dev/null

testing/dbtest/docker/restore-benchmark-dumps.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -e
+shopt -s globstar
+
+for file in $(ls -v /benchmark_dumps/*.dump); do
+    echo "Creating template database based on: ${file}"
+    db_name="boundary_$(basename ${file} .dump)_template"
+    psql -v "ON_ERROR_STOP=1" --username "$POSTGRES_USER" --dbname "${POSTGRES_DB}" -q <<EOSQL
+    create database ${db_name} owner ${POSTGRES_USER};
+EOSQL
+    echo "Restoring ${file} into ${db_name}"
+    pg_restore -j $(nproc) --username "${POSTGRES_USER}" --dbname ${db_name} "${file}"
+    psql -v "ON_ERROR_STOP=1" --username "${POSTGRES_USER}" --dbname "${POSTGRES_DB}" -q <<EOSQL
+    update pg_database set datistemplate = true, datallowconn = false where datname = '${db_name}';
+EOSQL
+done