feature(connectors/rillet): add new Rillet connector example

[jacksonbailey-maker]

Jira ticket

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Description of Change

Summary
This PR adds a new Rillet connector example to the repo, including full connector implementation, configuration template, README documentation, and a local connector test harness. The user will need to provide their own API key in the configuration.json file, alone with specifying the api_version if using one other than version 3.

Files added

• connector.py
• configuration.json
• README.md
• test_connector.py

What changed

• Implemented with:
  • validate_configuration() for required config checks
  • schema() derived from endpoint metadata
  • update() sync loop over Rillet collection endpoints
  • robust _make_request() with retries, exponential backoff, and 429/5xx handling
  • cursor-based pagination, incremental sync using updated.gt, and checkpointing
  • support for optional endpoints, including graceful skip of vendor-credits 404s
• Added a configuration template with placeholder values:
  • api_key
  • base_url
  • api_version
• Added user-facing documentation in README.md:
  • connector overview
  • requirements
  • getting started
  • features
  • data handling
  • error handling
  • tables created
  • additional considerations
    Added test_connector.py to validate connector structure and local debug logic without the real SDK.

Testing

• Confirmed syntax for connector.py via Python compile check.
• test_connector.py is included to allow local validation of connector import and logic without requiring Fivetran runtime.

Checklist

Some tips and links to help validate your PR:

• Tested the connector with fivetran debug command.
• Added/Updated example-specific README.md file, see the README template for the required structure and guidelines.
• Followed Python Coding Standards, refer here

[cla-assistant]

All committers have signed the CLA.

[Copilot]

Pull request overview

Adds a new Connector SDK example for syncing Rillet accounting resources, including connector implementation, configuration template, and documentation.

Changes:

• Added connector.py implementing schema generation, incremental/paginated sync, retries/backoff, and checkpointing.
• Added configuration.json template for connector configuration.
• Added example documentation (README.md) and a local validation harness (test_connector.py).
• Added a root CLAUDE.md with AI assistant instructions.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 26 comments.

Show a summary per file

File	Description
connectors/rillet/connector.py	New Rillet connector example with pagination/incremental logic, retry handling, and state checkpointing.
connectors/rillet/configuration.json	New configuration template for API key/base URL/version.
connectors/rillet/README.md	New user-facing documentation for running/configuring the example.
connectors/rillet/test_connector.py	New local “mock SDK” harness to validate basic import/execution.
CLAUDE.md	New top-level AI assistant instruction file.

[jacksonbailey-maker]

I've made all of the requested changes

[fivetran-sahilkhirwal]

Hi @jacksonbailey-maker
Can you please address the existing minor comments :)
Apart from them, the example looks good

[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 8 comments.

[fivetran-JenasVimal]

LGTM
Just add testing details by uploading screenshots of fivetran debug and fivetran deploy

[jacksonbailey-maker]

Here is a Rillet connector debug example:

---

Here is a Rillet connector deploy example:

[fivetran-chinmayichandrasekar]

Left a few suggestions. I also think Co-pilot's review comments are valid, for example, including the Authentication section.

[fivetran-chinmayichandrasekar]

LGTM