essx 0.0.0a0

This script requires some initial setup to be completed before using it:

1. Export your Platform API credentials to your localhost's environment variables as SCH_CRED_ID (credential id) and SCH_AUTH_TOKEN (authentication token).
2. Export your Snowflake Password (the password used to log into your Snowflake organization) to your localhost's environment variables as SF_P. You will supply the username as an argument to the snowflake_conn method.
3. Export your MySQL password (the password used to authenticate with your MySQL instance) to your localhost's environment variables as MYSQL_P. You will supply the username as an argument to the mysql_conn method.
4. Spin up a Transformer deployment with a 'docker' install type, and run the resulting install/startup command on the same host where the script is being run. Note: you may need to add -p 19630:19630 to expose the Transformer instance inside the docker container on your localhost's 19630 port.
5. Use docker cp to copy your target CSV file into your Transformer docker container, and use the path of the copied file in the from_csv method.

The current script usage is as follows:

import essx

sx = essx.Sx()
mysql_conn = sx.mysql_conn(host='url.of.mysql:port', username='username')
snowflake_conn = sx.snowflake_conn(account='snowflake-account', role='SNOWFLAKE_ROLE',
                                   warehouse='SNOWFLAKE_WAREHOUSE', database='DATABASE', schema='SCHEMA',
                                   username='USERNAME')

pt1_df = sx.from_mysql(connection=mysql_conn, schema='SCHEMA', tables=['TABLE_NAME'])
pt2_df = sx.from_csv('/path/to/file.csv')
final_df = sx.merge(pt1_df, pt2_df, how='JOIN_TYPE', on='COLUMN_NAME')
final_df = sx.drop(columns=['COLUMN_ONE', 'COLUMN_TWO', 'COLUMN_THREE', 'COLUMN_FOUR'])