allow running tests without docker

feat(dev-infra): allow running apps without docker
chore(dev): prevent tests from running if a command fails to run (#1825)

packages/dev-infra/_common.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env sh
 
+# Exit if any command fails
+set -e
+
 get_container_id() {
   local compose_file=$1
   local service=$2
@@ -9,7 +12,7 @@ get_container_id() {
   fi
 
  # first line of jq normalizes for docker compose breaking change, see docker/compose#10958
-  docker compose -f $compose_file ps --format json --status running \
+  docker compose --file $compose_file ps --format json --status running \
     | jq -sc '.[] | if type=="array" then .[] else . end' | jq -s \
     | jq -r '.[]? | select(.Service == "'${service}'") | .ID'
 }
@@ -36,8 +39,79 @@ export_redis_env() {
   export REDIS_HOST="127.0.0.1:6380"
 }
 
-# Main entry point
-main() {
+pg_clear() {
+  local pg_uri=$1
+
+  for schema_name in `psql "${pg_uri}" -c "SELECT schema_name FROM information_schema.schemata WHERE schema_name NOT LIKE 'pg_%' AND schema_name NOT LIKE 'information_schema';" -t`; do
+    psql "${pg_uri}" -c "DROP SCHEMA \"${schema_name}\" CASCADE;"
+  done
+}
+
+pg_init() {
+  local pg_uri=$1
+
+  psql "${pg_uri}" -c "CREATE SCHEMA IF NOT EXISTS \"public\";"
+}
+
+redis_clear() {
+  local redis_uri=$1
+  redis-cli -u "${redis_uri}" flushall
+}
+
+main_native() {
+  local services=${SERVICES}
+  local postgres_url_env_var=`[[ $services == *"db_test"* ]] && echo "DB_TEST_POSTGRES_URL" || echo "DB_POSTGRES_URL"`
+  local redis_host_env_var=`[[ $services == *"redis_test"* ]] && echo "REDIS_TEST_HOST" || echo "REDIS_HOST"`
+
+  postgres_url="${!postgres_url_env_var}"
+  redis_host="${!redis_host_env_var}"
+
+  if [ -n "${postgres_url}" ]; then
+    echo "Using ${postgres_url_env_var} (${postgres_url}) to connect to postgres."
+    pg_init "${postgres_url}"
+  else
+    echo "Postgres connection string missing did you set ${postgres_url_env_var}?"
+    exit 1
+  fi
+
+  if [ -n "${redis_host}" ]; then
+    echo "Using ${redis_host_env_var} (${redis_host}) to connect to Redis."
+  else
+    echo "Redis connection string missing did you set ${redis_host_env_var}?"
+    echo "Continuing without Redis..."
+  fi
+
+  cleanup() {
+    local services=$@
+
+    if [ -n "${redis_host}" ] && [[ $services == *"redis_test"* ]]; then
+      redis_clear "redis://${redis_host}" &> /dev/null
+    fi
+
+    if [ -n "${postgres_url}" ] && [[ $services == *"db_test"* ]]; then
+      pg_clear "${postgres_url}" &> /dev/null
+    fi
+  }
+
+  # trap SIGINT and performs cleanup
+  trap "on_sigint ${services}" INT
+  on_sigint() {
+    cleanup $@
+    exit $?
+  }
+
+  # Run the arguments as a command
+  DB_POSTGRES_URL="${postgres_url}" \
+  REDIS_HOST="${redis_host}" \
+  "$@"
+  code=$?
+
+  cleanup ${services}
+
+  exit ${code}
+}
+
+main_docker() {
   # Expect a SERVICES env var to be set with the docker service names
   local services=${SERVICES}
 
@@ -47,15 +121,20 @@ main() {
   # whether this particular script started the container(s)
   started_container=false
 
-  # trap SIGINT and performs cleanup as necessary, i.e.
-  # taking down containers if this script started them
-  trap "on_sigint ${services}" INT
-  on_sigint() {
+  # performs cleanup as necessary, i.e. taking down containers
+  # if this script started them
+  cleanup() {
     local services=$@
     echo # newline
     if $started_container; then
-      docker compose -f $compose_file rm -f --stop --volumes ${services}
+      docker compose --file $compose_file rm --force --stop --volumes ${services}
     fi
+  }
+
+  # trap SIGINT and performs cleanup
+  trap "on_sigint ${services}" INT
+  on_sigint() {
+    cleanup $@
     exit $?
   }
 
@@ -71,8 +150,8 @@ main() {
 
   # if any are missing, recreate all services
   if $not_running; then
-    docker compose -f $compose_file up --wait --force-recreate ${services}
     started_container=true
+    docker compose --file $compose_file up --wait --force-recreate ${services}
   else
     echo "all services ${services} are already running"
   fi
@@ -83,12 +162,17 @@ main() {
   # save return code for later
   code=$?
 
-  # performs cleanup as necessary, i.e. taking down containers
-  # if this script started them
-  echo # newline
-  if $started_container; then
-    docker compose -f $compose_file rm -f --stop --volumes ${services}
-  fi
-
+  # performs cleanup as necessary
+  cleanup ${services}
   exit ${code}
 }
+
+# Main entry point
+main() {
+  if ! docker ps >/dev/null 2>&1; then
+    echo "Docker unavailable. Running on host."
+    main_native $@
+  else
+    main_docker $@
+  fi
+}