PostgreSQL Database Backend

A PostgreSQL databse is utilized to prevent duplicate DSP transactions by creating, getting, and updating service events as needed. An external database can be set by ensuring the node_env variable in the config.toml file is set to production. The database settings may be specified with the url variable, e.g., postgres://user:pass@example.com:5432/dbname.

config.toml:

[database]

# url syntax: postgres://user:pass@example.com:5432/dbname, only necessary for production

url = "postgres://user:pass@example.com:5432/dbname" 

# production (uses above database_url for database)

node_env = "production"

How to install postgres on Ubuntu

wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" |sudo tee  /etc/apt/sources.list.d/pgdg.list
sudo apt update
sudo apt -y install postgresql-12 postgresql-client-12

Setup database and user

sudo su - postgres
psql
CREATE DATABASE dsp;
CREATE USER dsp WITH ENCRYPTED PASSWORD 'Put-Some-Strong-Password-Here';
GRANT ALL PRIVILEGES ON DATABASE dsp to dsp;

How to wipe local database

sudo su - postgres
psql
\l  # to list database and find your DB name, mine is "dsp"
\c dsp #to connect to the DB
drop table "Settings";
drop table "ServiceRequests";
<CTRL> d # exit