resty-snowflake is a Lua library that integrates Snowflake's powerful capabilities with the high-performance web platform OpenResty. It leverages the Snowflake SQL REST API and supports fast JSON processing, enabling efficient and scalable data management in modern web applications.

• Direct integration of Snowflake with OpenResty
• High-performance JSON processing using libraries like rsjson, dkjson, or cjson
• Support for Snowflake SQL API operations:
  • Submit SQL statements for execution
  • Check execution status
  • Cancel statement execution
  • Fetch query results concurrently
• Integration with CortexAI Services for AI-powered functionalities
• Flexible configuration via environment variables or Lua scripts

1. Ensure you have OpenResty installed on your system.
2. Clone this repository:

   git clone https://github.com/skitsanos/resty-snowflake.git
   

3. Install the required OpenResty packages:

   opm get bsiara/dkjson
   opm get fffonion/lua-resty-openssl
   opm get pintsized/lua-resty-http
   opm get SkyLothar/lua-resty-jwt
   

You can configure resty-snowflake using either environment variables or Lua configuration.

Set the following environment variables:

• SNOWFLAKE_ACCOUNT_NAME
• SNOWFLAKE_USERNAME
• SNOWFLAKE_PRIVATE_KEY
• SNOWFLAKE_PUBLIC_KEY_FINGERPRINT

Initialize the library with a configuration table:

local snowflake = require("snowflake")

snowflake.init({
    account_name = "your_account_name",
    username = "your_username",
    private_key = "your_private_key",
    private_key_password = "your_private_key_password", -- optional
    public_key_fp = "your_public_key_fingerprint"
})

Here's a basic example of how to use resty-snowflake:

local snowflake = require("snowflake")

snowflake.init()

local result, err = snowflake.execute_sql("SELECT CURRENT_TIMESTAMP()")
if err then
    ngx.say("Error: " .. err)
    return
end

ngx.say("Result: ", result.data[1])

A Dockerfile is provided for easy deployment. Build and run the Docker image using the following commands:

docker build -t resty-snowflake-demo .
docker run -it -d -p "8000:80" -v "$(pwd)/app:/app" -v "$(pwd)/lib:/app-libs" -v "$(pwd)/nginx/conf/nginx.conf:/usr/local/openresty/nginx/conf/nginx.conf" -e SNOWFLAKE_ACCOUNT_NAME="your_account_name" -e SNOWFLAKE_USERNAME="your_username" -e SNOWFLAKE_PRIVATE_KEY="your_private_key" -e SNOWFLAKE_PUBLIC_KEY_FINGERPRINT="your_public_key_fingerprint" resty-snowflake-demo

A Taskfile is included to simplify common operations:

• generate-keypair: Generate RSA key pair
• test-keypair: Test Snowflake connectivity
• generate-jwt: Generate JWT for authentication
• test-sql: Test Snowflake SQL REST API
• docker-build: Build Docker image
• docker-run: Run Docker container

To use these tasks, install Task and run task <taskname>.

Contributions are welcome! Please feel free to submit a Pull Request.

If you encounter any problems or have any questions, please open an issue on this GitHub repository.