V1.5.1

[flarco]

New Features

Directory-Based Runs

• Run all replications/pipelines in a directory: You can now pass a directory path to sling run, and it will automatically discover
  and execute all valid replication and pipeline YAML files within it
• Files are executed in order with clear visual separators showing progress
• Summary shows successes/failures after completion

API Specification Enhancements

• Modifier syntax for response rules/processors: New +rules, rules+, +processors, processors+ syntax allows prepending or appending
  rules and processors to API spec endpoints
• Setup/Teardown modifiers: Similar +setup, setup+, +teardown, teardown+ syntax for endpoint setup and teardown configurations
• JSON object/array detection in template variables: Template variables in API specs now properly detect and handle JSON objects and
  arrays

New Transform Functions

• regex_replace(string, pattern, replacement): Replace regex pattern matches in strings, supports backreferences (e.g., $1, $2)

Database Improvements

• ClickHouse keep-alive mechanism: Prevents idle connection timeouts during long bulk imports by periodically sending heartbeat
  queries
• DuckDB updated to v1.4.2: Latest DuckDB version with improvements and fixes
• DuckDB binary pre-download for threaded replications: Avoids race conditions when multiple threads need DuckDB simultaneously

Snowflake Enhancements

• MFA token caching: Improved support for Snowflake connections with MFA

OpenTelemetry Integration

• OTEL logging support: New OpenTelemetry dependencies for enhanced logging and observability
• Configure via SLING_OTEL_ENDPOINT environment variable

Pipeline Improvements

• Skip steps on previous error: Pipeline steps are now automatically skipped if a previous step errored
• Parameter rendering in hooks: Dynamic value handling in hook parameters

Bug Fixes

• Fixed table creation check: CREATE TABLE statements now properly check for existence before creation
• Removed deprecated --config CLI flag: Cleanup of legacy options
• Improved progress message formatting: Cleaner task execution output