Elastiq Backend

This is the backend service for Elastiq built using FastAPI. The server runs on port 8000 and utilizes the Cohere API for sentiment analysis.

Requirements

• Docker
• FastAPI
• Cohere API (for sentiment analysis)

Getting Started

Follow the steps below to build and run the Elastiq backend using Docker.

1. Clone the Repository

git clone https://github.com/burrows99/elastiq-backend.git
cd elastiq-backend

2. Build the docker image

Make sure you are in the root directory of the project.

docker build -f Dockerfile -t elastiq-backend-docker .

3. Run the Docker Container

To start the container and run the server on port 8000, use the following command:

docker run -d -p 8000:8000 elastiq-backend-docker

4. Access the server

Once the local server is running, you can access it at:

http://localhost:8000

Deployed server can be accessed it at:

[https://elastiq-backend.onrender.com/](http://35.226.217.146:8000/classify_review)

5. Sentiment Analysis with Cohere API

The Elastiq backend integrates with Cohere to perform sentiment analysis. You can send a POST request to the following endpoint to analyze the sentiment of a text:

POST https://elastiq-backend.onrender.com/classify_review

Request Body Example:

{
  "review": "This is a very good movie."
}

6. Deployment on GCP Compute Engine

Steps:

• Set the project ID

gcloud config set project natural-oxygen-452115-h7

• Enable APIs, if not done already.

gcloud services enable compute.googleapis.com

• Add firewall for access to port 8000, if not done already:

gcloud compute firewall-rules create allow-tcp-8000 \
  --allow tcp:8000 \
  --network default \
  --direction INGRESS \
  --priority 1000 \
  --source-ranges 0.0.0.0/0 \
  --target-tags http-server

• Create bare metal vm instance:

gcloud compute instances create elastiq-backend-instance \
  --zone=us-central1-a \
  --machine-type=n1-standard-1 \
  --image-family=debian-11 \
  --image-project=debian-cloud

• Connect to the VM through SSH

gcloud compute ssh elastiq-backend-instance --zone=us-central1-a

• Execute the following commands:

sudo apt-get update
sudo apt install git -y
sudo apt-get install -y docker.io

• Setup repo

git clone https://github.com/burrows99/elastiq-backend.git
cd elastiq-backend

• Build Image

docker build -f Dockerfile -t elastiq-backend-docker .

• Run container

docker run -d -p 8000:8000 elastiq-backend-docker

• See the external IP from the UI and use http://<EXTERNAL_IP>:8000 to access backend.