deploy.sh

#!/bin/bash
# deploy.sh
# Usage: ./deploy.sh <TAG> <SERVICE_NAME>

set -e

TAG=$1
SERVICE_NAME=$2
CLUSTER_NAME=${CLUSTER_NAME:-fraud-detection-cluster}
AWS_REGION=${AWS_DEFAULT_REGION:-us-west-2}
TASK_FAMILY=${TASK_FAMILY:-fraud-detection-task}

if [ -z "$TAG" ] || [ -z "$SERVICE_NAME" ]; then
  echo "Usage: ./deploy.sh <TAG> <SERVICE_NAME>"
  echo "Example: ./deploy.sh staging fraud-detection-service"
  exit 1
fi

echo "============================================"
echo "Deploying to ECS"
echo "============================================"
echo "Tag: $TAG"
echo "Service: $SERVICE_NAME"
echo "Cluster: $CLUSTER_NAME"
echo "Region: $AWS_REGION"
echo ""

# Get AWS Account ID
AWS_ACCOUNT_ID=$(aws sts get-caller-identity --query Account --output text)
ECR_REPO_NAME=${ECR_REPO_NAME:-fraud-detection-app}
NEW_IMAGE="${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_REGION}.amazonaws.com/${ECR_REPO_NAME}:${TAG}"

echo "New image: $NEW_IMAGE"

# Get current task definition
echo "Fetching current task definition..."
TASK_DEFINITION=$(aws ecs describe-task-definition \
    --task-definition $TASK_FAMILY \
    --region $AWS_REGION \
    --query 'taskDefinition')

# Create temporary file for the new task definition
TEMP_TASK_DEF=$(mktemp)
trap "rm -f $TEMP_TASK_DEF" EXIT

# Update image in task definition and save to temp file
echo "Creating new task definition..."
echo $TASK_DEFINITION | jq --arg IMAGE "$NEW_IMAGE" '
    .containerDefinitions[0].image = $IMAGE |
    del(.taskDefinitionArn, .revision, .status, .requiresAttributes, .compatibilities, .registeredAt, .registeredBy)
' > $TEMP_TASK_DEF

# Validate JSON
if ! jq empty $TEMP_TASK_DEF 2>/dev/null; then
    echo "Error: Generated task definition is not valid JSON"
    cat $TEMP_TASK_DEF
    exit 1
fi

echo "Task definition preview:"
cat $TEMP_TASK_DEF | jq -r '.containerDefinitions[0].image'

# Register new task definition
echo "Registering new task definition..."
NEW_TASK_ARN=$(aws ecs register-task-definition \
    --cli-input-json file://$TEMP_TASK_DEF \
    --region $AWS_REGION \
    --query 'taskDefinition.taskDefinitionArn' \
    --output text)

if [ -z "$NEW_TASK_ARN" ]; then
    echo "Error: Failed to register task definition"
    exit 1
fi

echo "New task definition: $NEW_TASK_ARN"

# Update service
echo "Updating ECS service..."
aws ecs update-service \
    --cluster "$CLUSTER_NAME" \
    --service "$SERVICE_NAME" \
    --task-definition "$NEW_TASK_ARN" \
    --force-new-deployment \
    --region "$AWS_REGION" \
    --output json

echo ""
echo "✓ Deployment initiated successfully!"
echo ""
echo "Monitor deployment with:"
echo "  aws ecs describe-services --cluster $CLUSTER_NAME --services $SERVICE_NAME --region $AWS_REGION"