add a project-level README file (#2)

* add a project-level README file

* add readme

* minor improvements

Author: HarshCasper

README.md

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+# Smart Factory Monitoring App
+
+This project showcases a comprehensive smart factory monitoring application specifically designed to demonstrate **LocalStack for Snowflake** capabilities for local data cloud development, debugging, and testing throughout the entire software development lifecycle (SDLC).
+
+This application showcases the full spectrum of **LocalStack for Snowflake** features, such as:
+
+- Emulating a local Snowflake environment with databases, schemas, tables, and more.
+- Utilizing S3 service for automated data ingestion with Snowpipe integration.
+- Implementing dbt transformations for data quality and processing.
+- Building interactive dashboards with Streamlit and Snowflake Native Apps.
+- Orchestrating data transformations in an automated pipeline with Dagster.
+- Implementing comprehensive data & integration testing with pytest and dbt tests.
+- Using GitHub Actions for continuous integration to ensure automated testing.
+- Adding real-time alerting with a Python User-Defined Function (UDFs) and Snowflake Tasks.
+- Showcasing Zero-Copy Cloning for instant data recovery scenarios in case of data loss.
+
+The application serves as a complete reference implementation for developing Snowflake data solutions locally, enabling real-time monitoring of factory machines, automated data ingestion, quality testing, and predictive maintenance alerts—all running entirely on your local machine through LocalStack's Snowflake emulator.
+
+## Architecture
+
+The application implements a modern data pipeline architecture showcasing a realistic smart factory scenario:
+
+```
+┌─────────────────┐    ┌──────────────┐    ┌─────────────────┐
+│   Data Sources  │───▶│  S3 Bucket   │───▶│   Snowpipe      │
+│  (CSV Sensors)  │    │ (LocalStack) │    │  (Auto-Ingest)  │
+└─────────────────┘    └──────────────┘    └─────────────────┘
+                                                     │
+                                                     ▼
+┌─────────────────┐    ┌──────────────┐    ┌─────────────────┐
+│   Streamlit     │◀───│     dbt      │◀───│   Snowflake     │
+│   Dashboard     │    │ Transformations│   │   Emulator      │
+└─────────────────┘    └──────────────┘    └─────────────────┘
+         │                       │                   │
+         ▼                       ▼                   ▼
+┌─────────────────┐    ┌──────────────┐    ┌─────────────────┐
+│  Native App     │    │   Dagster    │    │  Email Alerts   │
+│  (Snowflake)    │    │  Pipeline    │    │     (SES)       │
+└─────────────────┘    └──────────────┘    └─────────────────┘
+```
+
+## Prerequisites
+
+Features in this sample app require a LocalStack for Snowflake license - make sure your Auth Token is configured in your terminal session.
+
+```bash
+export LOCALSTACK_AUTH_TOKEN=<your-token>
+```
+
+- [Docker](https://docs.docker.com/get-docker/)
+- [`localstack` CLI](https://docs.localstack.cloud/getting-started/installation/#localstack-cli).
+- [AWS CLI](https://docs.localstack.cloud/user-guide/integrations/aws-cli/) with the [`awslocal` wrapper](https://docs.localstack.cloud/user-guide/integrations/aws-cli/#localstack-aws-cli-awslocal).
+- [Snowflake CLI](https://docs.snowflake.com/developer-guide/snowflake-cli/index) with a [`localstack` connection profile](https://snowflake.localstack.cloud/user-guide/integrations/snow-cli/).
+- [Python](https://www.python.org/downloads/) 3.10+ & [`pip`](https://pip.pypa.io/en/stable/installation/)
+- [`make`](https://www.gnu.org/software/make/) (**optional**, but recommended for running the sample application)
+
+## Installation
+
+To run the sample application, you need to install the required dependencies.
+
+First, clone the repository:
+
+```bash
+git clone https://github.com/localstack-samples/snowflake-smart-factory-app.git
+```
+
+Then, navigate to the project directory:
+
+```bash
+cd snowflake-smart-factory-app
+```
+
+Next, install the project dependencies by running the following command:
+
+```bash
+make install
+```
+
+## Deployment
+
+Start LocalStack with the `LOCALSTACK_AUTH_TOKEN` pre-configured:
+
+```bash
+localstack auth set-token <your-auth-token>
+DOCKER_FLAGS='-e SF_LOG=trace' \
+DEBUG=1 \
+IMAGE_NAME=localstack/snowflake:latest \
+localstack start
+```
+
+To deploy the sample application, run the following command:
+
+```bash
+make deploy
+```
+
+This will:
+
+- Setup Snowflake database, tables, and Snowpipe
+- Setup S3 bucket with event notifications
+- Upload sample sensor data (`data/sensor_data_batch_1.csv`)
+- Run dbt transformations to process the data
+
+You can also run the following command to deploy the Native app:
+
+```bash
+make app
+```
+
+The output will be similar to the following:
+
+```bash
+App is now accessible at https://snowflake.localhost.localstack.cloud:4566/apps/test/test/FACTORY_APP_HARSHCASPER/
+```
+
+The dashboard provides:
+
+- Real-time machine health monitoring
+- Interactive sensor data visualizations
+- Predictive maintenance recommendations
+- Anomaly detection and alerting
+
+## Testing
+
+You can run full end-to-end integration tests using the following command:
+
+```bash
+make test
+```
+
+This executes:
+
+- **Machine Health Tests**: Verifies health metrics calculations and thresholds
+- **Snowpipe Integration Tests**: Tests automated data ingestion workflows
+
+## Use Cases
+
+### Pipeline Orchestration
+
+To run automated dbt transformations on new data, you can launch a Dagster pipeline:
+
+```bash
+make pipeline
+```
+
+This will:
+
+- Setup a pipeline monitoring dashboard
+- Create a S3 sensor to monitor new data
+- Trigger dbt transformations on new data
+
+To trigger dbt transformations on new data, you can run the following command:
+
+```bash
+make upload LATEST=true
+```
+
+This will upload the latest sensor data batch (`data/sensor_data_batch_2.csv`) to the S3 bucket. The Dagster pipeline will automatically detect the new data and trigger the dbt transformations.
+
+To generate new sensor data, you can run the following command:
+
+```bash
+make generate
+```
+
+### Real-Time Alerting
+
+To set up automated email alerts for critical machine conditions, you can run the following command:
+
+```bash
+make alerts
+```
+
+This will:
+
+- Create a Python UDF to send email alerts with SES integration
+- Create a Snowflake Task to trigger the UDF every 30 seconds
+- Create a Snowflake View to query critical machine data
+- Send HTML emails for critical machine conditions
+
+In 30 seconds, you can query the SES developer endpoint to see the alert email:
+
+```bash
+curl -s http://localhost.localstack.cloud:4566/_aws/ses
+```
+
+You can also use the [Mailhog extension](https://github.com/localstack/localstack-extensions/tree/main/mailhog) to view the alert email via a user-friendly interface.
+
+### Data Recovery with Zero-Copy Cloning
+
+To demonstrate instant data recovery capabilities, you can run the following command:
+
+```bash
+snow sql -f solutions/data_recovery_clones.sql -c localstack
+```
+
+This showcases:
+
+- Instant table cloning without data duplication
+- Point-in-time recovery scenarios
+- Disaster recovery best practices
+
+## License
+
+This project is licensed under the [Apache License 2.0](LICENSE).