fix: Add support for create connection with on-premises gateway

[aviatco]

📥 Pull Request

• Fixes [BUG] Unable to Create Connection with Basic Auth using Gateway #28

✨ Description of new changes

Overview

Enhanced the fabric CLI to support creating connections with on-premises gateway connectivity, including proper parameter validation and credential handling for gateway-specific scenarios according to API documentation.

Key Changes

Connection Parameter Validation (fab_cmd_mkdir_utils.py)

• Added support for onpremisesgateway connectivity type in credential validation
• Implemented validation for gateway-specific credential values requiring gatewayId and encryptedCredentials parameters
• Added type safety checks to ensure credential values are valid JSON objects before processing
• Enhanced error handling with descriptive messages for missing or invalid gateway parameters

Gateway Credential Handling

• Extended _validate_credential_params() function to handle on-premises gateway authentication flows
• Added support for values parameter structure specific to on-premises gateway connectivity
• Implemented proper credential parameter mapping for on-premises gateway connections in connection request building

Error Handling Improvements

• Added robust validation to prevent AttributeError when processing malformed credential data
• Enhanced error messages to clearly indicate missing gateway-specific parameters
• Implemented early validation with fail-fast behavior for invalid credential formats

Technical Details

• Connectivity Type: Added onpremisesgateway support.
• Required Parameters: gatewayId, encryptedCredentials for on-premises gateway connections
• Credential Structure: Support for nested values parameter containing gateway authentication details
• Validation: Type checking ensures credential values are dictionaries before key access

Important Note

⚠️ Current Limitation: This feature is currently supported only when users provide the encrypted credentials. The CLI does not handle credential encryption in this implementation.

Testing

• Added validation for gateway parameter requirements
• Included error handling tests for malformed credential data
• Verified proper credential mapping for gateway connectivity scenarios

This enhancement enables users to create secure connections through on-premises data gateways, expanding the CLI's connectivity options for hybrid cloud scenarios.

[ayeshurun]

please add changie entry