# G2P Bridge
Developers can set up and run the G2P Bridge on their local machines. This guide outlines the steps to install G2P Bridge on a **Linux-based** laptop or desktop.
## Prerequisites
* Python3
* Git
* PostgreSQL
* Redis
* Celery
## Installation of G2P Bridge
#### 1. Update system packages
* Log in to your Linux server using SSH and update the package list and upgrade the existing packages:
```bash
sudo apt update
sudo apt upgrade -y
```
#### 2. Install dependencies
```bash
sudo apt install -y python3-pip python3-dev build-essential libpq-dev
```
3\. Install and configure PostgreSQL
* G2P Bridge requires PostgreSQL as the database engine. Install PostgreSQL (if not already installed) and create a new database user for G2P Bridge.
```bash
sudo apt install -y postgresql
sudo su - postgres
psql
CREATE ROLE bridgeuser WITH LOGIN NOSUPERUSER CREATEDB CREATEROLE INHERIT REPLICATION CONNECTION LIMIT -1 PASSWORD 'password';
CREATE DATABASE bridgedb WITH OWNER = bridgeuser CONNECTION LIMIT = -1;
exit
exit
```
4\. Clone the G2P Bridge Repository
* Clone the `openg2p-g2p-bridge` repository to your local machine.
```bash
git clone https://github.com/OpenG2P/openg2p-g2p-bridge
```
#### 5. Install Python Libraries and G2P Bridge Components
{% tabs %}
{% tab title="Bridge API" %}
**Setting up the Bridge API**
* Make a new Python virtual environment.
```bash
cd openg2p-g2p-bridge/openg2p-g2p-bridge-api
python3 -m venv venv
```
* Activate the virtual environment.
```bash
source venv/bin/activate
```
* Use `pip` to install the required Python packages, including the core libraries for the G2P Bridge.
```bash
python3 -m pip install \
openg2p-fastapi-common==1.1.2 \
openg2p-fastapi-auth==1.1.2 \
openg2p-g2pconnect-common-lib==1.1.0 \
openg2p-g2p-bridge-models==1.1.0 \
openg2p-g2p-bridge-api==1.1.0
```
* Create a .env file
```
G2P_BRIDGE_DB_DBNAME='bridgedb'
G2P_BRIDGE_DB_HOSTNAME='localhost'
G2P_BRIDGE_DB_PASSWORD='password'
G2P_BRIDGE_DB_PORT='5432'
G2P_BRIDGE_DB_USERNAME='bridgeuser'
G2P_BRIDGE_WORKER_TYPE='gunicorn'
G2P_BRIDGE_HOST='0.0.0.0'
G2P_BRIDGE_PORT='8000'
G2P_BRIDGE_NO_OF_WORKERS=1
```
* Migrate the database schema
```
python3 main.py migrate;
```
* Run the API server on `127.0.0.1:8000`
```
gunicorn "main:app" --workers 1 --worker-class uvicorn.workers.UvicornWorker --bind 127.0.0.1:8000
```
{% endtab %}
{% tab title="Bridge Celery Beat" %}
**Setting up the Bridge Celery Beat**
* Make a new Python virtual environment.
```bash
cd openg2p-g2p-bridge/openg2p-g2p-bridge-celery-beat-producers
python3 -m venv venv
```
* Activate the virtual environment.
```bash
source venv/bin/activate
```
* Use `pip` to install the required Python packages, including the core libraries for the G2P Bridge.
```bash
python3 -m pip install \
openg2p-fastapi-common==1.1.2 \
openg2p-fastapi-auth==1.1.2 \
openg2p-g2pconnect-common-lib==1.1.0 \
openg2p-g2p-bridge-models==1.1.0 \
openg2p-g2p-bridge-bank-connectors==1.1.0 \
openg2p-g2p-bridge-celery-beat-producers==1.1.0
```
* Create a .env file
```
G2P_BRIDGE_CELERY_BEAT_MAPPER_RESOLVE_API_URL='http://spar-mapper-api/sync/resolve' # Update the Spar Mapper Resolve URL
G2P_BRIDGE_CELERY_BEAT_DB_HOSTNAME='localhost'
G2P_BRIDGE_CELERY_BEAT_DB_PASSWORD='password'
G2P_BRIDGE_CELERY_BEAT_CELERY_BROKER_URL='redis://127.0.0.1:6379/0'
G2P_BRIDGE_CELERY_BEAT_CELERY_BACKEND_URL='redis://127.0.0.1:6379/0'
G2P_BRIDGE_CELERY_BEAT_MAPPER_RESOLVE_FREQUENCY=60
G2P_BRIDGE_CELERY_BEAT_FUNDS_AVAILABLE_CHECK_FREQUENCY=60
G2P_BRIDGE_CELERY_BEAT_FUNDS_BLOCKED_FREQUENCY=60
G2P_BRIDGE_CELERY_BEAT_FUNDS_DISBURSEMENT_FREQUENCY=60
G2P_BRIDGE_CELERY_BEAT_MT940_PROCESSOR_FREQUENCY=60
G2P_BRIDGE_CELERY_BEAT_PROCESS_FUTURE_DISBURSEMENT_SCHEDULES=true
```
* Run redis-server
```bash
sudo systemctl start redis
```
* Run the celery beat
```bash
celery -A main.celery_app worker --beat --loglevel=info
```
{% endtab %}
{% tab title="Bridge Celery Worker" %}
**Setting up the Bridge Celery Worker**
* Make a new Python virtual environment.
```bash
cd openg2p-g2p-bridge/openg2p-g2p-bridge-celery-workers
python3 -m venv venv
```
* Activate the virtual environment.
```bash
source venv/bin/activate
```
* Use `pip` to install the required Python packages, including the core libraries for the G2P Bridge.
```bash
python3 -m pip install \
openg2p-fastapi-common==1.1.2 \
openg2p-fastapi-auth==1.1.2 \
openg2p-g2pconnect-common-lib==1.1.0 \
openg2p-g2p-bridge-models==1.1.0 \
openg2p-g2p-bridge-bank-connectors==1.1.0 \
openg2p-g2p-bridge-celery-workers==1.1.0
```
* Create a .env file
```
G2P_BRIDGE_CELERY_WORKERS_MAPPER_RESOLVE_API_URL='http://mapper/sync/resolve'
G2P_BRIDGE_CELERY_WORKERS_MAPPER_RESOLVE_RETRY_DELAY=5
G2P_BRIDGE_CELERY_WORKERS_DB_DBNAME='bridgedb'
G2P_BRIDGE_CELERY_WORKERS_DB_USERNAME='bridgeuser'
G2P_BRIDGE_CELERY_WORKERS_DB_PASSWORD='password'
G2P_BRIDGE_CELERY_WORKERS_DB_HOSTNAME='localhost'
G2P_BRIDGE_CELERY_BEAT_BANK_FA_DECONSTRUCT_STRATEGY='^account_number:(?P.*)\.branch_code:(?P.*)\.bank_code:(?P.*)\.mobile_number:(?P.*)\.email_address:(?P.*)\.fa_type:(?P.*)$'
G2P_BRIDGE_CELERY_BEAT_MOBILE_WALLET_DECONSTRUCT_STRATEGY='^mobile_number:(?P.*)\.wallet_provider_name:(?P.*)\.wallet_provider_code:(?P.*)\.fa_type:(?P.*)$'
G2P_BRIDGE_CELERY_BEAT_EMAIL_WALLET_DECONSTRUCT_STRATEGY='^email_address:(?P.*)\.wallet_provider_name:(?P.*)\.wallet_provider_code:(?P.*)\.fa_type:(?P.*)$'
G2P_BRIDGE_CELERY_PRODUCERS_FUNDS_AVAILABLE_CHECK_URL_EXAMPLE_BANK='http://127.0.0.1:8003/check_funds'
G2P_BRIDGE_CELERY_PRODUCERS_FUNDS_BLOCK_URL_EXAMPLE_BANK='http://127.0.0.1:8003/block_funds'
G2P_BRIDGE_CELERY_PRODUCERS_FUNDS_DISBURSEMENT_URL_EXAMPLE_BANK='http://127.0.0.1:8003/initiate_payment'
G2P_BRIDGE_CELERY_WORKERS_CELERY_BROKER_URL='redis://127.0.0.1:6379/0'
G2P_BRIDGE_CELERY_WORKERS_CELERY_BACKEND_URL='redis://127.0.0.1:6379/0'
```
* Run redis-server (if not already started)
```bash
sudo systemctl start redis
```
* Run the celery beat
```bash
celery -A main.celery_app worker -Q g2p_bridge_celery_worker_tasks --loglevel=info
```
{% endtab %}
{% endtabs %}
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