Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

Email notification feature for event alerts with batching (one email per minute maximum)
Email configuration via EMAIL_SMTP_HOST, EMAIL_SMTP_PORT, EMAIL_SMTP_USER, EMAIL_SMTP_PASSWORD, EMAIL_FROM, EMAIL_TO, and EMAIL_CONTRACT_FILTER environment variables
Email notifications can be filtered by contract ID using EMAIL_CONTRACT_FILTER
Prometheus metric soroban_pulse_email_failures_total for monitoring email delivery failures
Documentation for email notifications in docs/email-notifications.md
Contract ID format validation for SSE stream endpoint (/v1/events/stream)
Database pool metrics to Prometheus endpoint (soroban_pulse_db_pool_size, soroban_pulse_db_pool_idle, soroban_pulse_db_pool_max)
Separate CI job for integration tests with real PostgreSQL
CHANGELOG.md and release process documentation
Server-Sent Events (SSE) streaming with keep-alive pings and automatic reconnection support
OpenTelemetry distributed tracing support (optional otel feature)
Multi-replica advisory lock for leader election and standby failover
Approximate event count via PostgreSQL statistics for low-latency responses
Event filtering by type (contract, diagnostic, system)
Event filtering by ledger range (from_ledger, to_ledger)
Lua script transformation for event data (optional lua feature)
Rate limiting per IP address with configurable threshold
Structured JSON logging support

Removed --skip handlers::tests flag from CI test job to run all tests including handler integration tests

Unversioned routes (/events, /events/{contract_id}, /events/tx/{tx_hash}, /events/stream) will be removed in v2.0.0. Use /v1/ prefixed routes instead.

API key authentication support via Authorization: Bearer or X-Api-Key headers (optional API_KEY environment variable)