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Tech Stack & Dependencies

Core Technology Stack​

QUANTAF is built on a modern, enterprise-grade technology foundation optimized for financial systems testing.

Languages & Build Tools​

ComponentVersionPurpose
Java21Primary language, latest LTS release
Gradle9.3.1Build automation with Kotlin DSL (build.gradle.kts)
Python3.11Not required — documentation uses Docusaurus (Node.js)

Financial Protocol Libraries​

FIX Protocol (Dual/Triple Version Support)​

org.quickfixj:quickfixj-core:2.3.1
org.quickfixj:quickfixj-messages-fix42:2.3.1  // FIX 4.2
org.quickfixj:quickfixj-messages-fix44:2.3.1  // FIX 4.4
org.quickfixj:quickfixj-messages-fix50:2.3.1  // FIX 5.0

QuickFIX/J Capabilities:

  • Full FIX protocol stack implementation
  • Session management and persistence
  • Message parsing and validation
  • Order routing simulation

SWIFT & Messaging​

jakarta.jms:jakarta.jms-api:3.1.0                        // JMS standard
org.apache.activemq:artemis-jakarta-client:2.37.0       // Broker support

Messaging Capabilities:

  • JMS-compliant message broker support
  • ActiveMQ Artemis integration
  • Pluggable MQ adapters

REST & HTTP​

io.rest-assured:rest-assured:5.4.0

REST Capabilities:

  • BDD-style HTTP testing
  • OAuth2 support
  • Request/response validation
  • Header and parameter management

Data & Statistics​

org.apache.commons:commons-math3:3.6.1

Math & Statistics:

  • Distribution generation (normal, exponential, Poisson)
  • Statistical calculations for market data
  • Random data synthesis

AI & Machine Learning​

dev.langchain4j:langchain4j:0.35.0
dev.langchain4j:langchain4j-open-ai:0.35.0
dev.langchain4j:langchain4j-ollama:0.35.0

LLM Integration:

  • OpenAI GPT models for NLP
  • Ollama for local LLM inference
  • Pluggable provider architecture
  • NLP-to-FIX translation
  • Scenario generation

Configuration & Serialization​

com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.17.0
com.fasterxml.jackson.core:jackson-databind:2.17.0

Configuration Features:

  • YAML-based configuration files
  • Environment variable interpolation
  • Type-safe config objects

Logging & Observability​

ch.qos.logback:logback-classic:1.5.6
org.slf4j:slf4j-api:2.0.13

Logging Capabilities:

  • SLF4J facade for logger independence
  • Logback configuration
  • Structured logging support
  • Async logging for high throughput

Test Runners & BDD​

org.testng:testng:7.10.2
io.cucumber:cucumber-java:7.18.0
io.cucumber:cucumber-testng:7.18.0

Testing Frameworks:

  • TestNG: Flexible Java testing framework
  • Cucumber: BDD scenario support
  • Parallel test execution
  • Integrated report generation

Reporting & Analytics​

io.qameta.allure:allure-testng:2.27.0
io.qameta.allure:allure-cucumber7-jvm:2.27.0

Allure Reports:

  • Rich HTML reports
  • Test timeline visualization
  • Failure analysis
  • Trend analytics
  • Integration with CI/CD

Assertions & Validation​

org.assertj:assertj-core:3.26.0

Assertion Library:

  • Fluent assertion API
  • Custom matcher support
  • Clear error messages

Infrastructure & CI/CD​

org.testcontainers:testcontainers:1.20.0

Testcontainers:

  • Docker-based testing
  • Ephemeral infrastructure
  • Database, broker, and service simulation
  • CI/CD pipeline integration

Dependency Graph​

QUANTAF Test Framework
├── Protocol Layer
│   ├── FIX (QuickFIX/J 2.3.1 — FIX 4.2, 4.4, 5.0)
│   ├── MQ (Jakarta JMS 3.1.0 + ActiveMQ Artemis 2.37.0)
│   └── REST (RestAssured 5.4.0 + OAuth2)
├── Logic Core
│   ├── MarketMaker (Commons Math 3.6.1)
│   ├── TradeLedger (cross-source reconciliation)
│   └── BusinessCalendar (NYSE, LSE, TSE)
├── AI Layer (LangChain4j 0.35.0)
│   ├── FixScenarioAgent (NLP → FIX)
│   ├── SmartStub (ISO 20022 XML)
│   └── Providers (OpenAI, Ollama)
├── Test Execution
│   ├── TestNG 7.10.2 (QuantafBaseTest)
│   ├── Cucumber 7.18.0 (BDD scenarios)
│   └── Allure 2.27.0 (reporting)
├── Configuration
│   ├── Jackson YAML 2.17.0 (quantaf.yml)
│   └── Logback 1.5.6 + SLF4J 2.0.13
└── Infrastructure
    ├── Docker Compose (ActiveMQ Artemis)
    └── Testcontainers 1.20.0 (CI)

Version Management​

All dependencies are centrally managed in build.gradle.kts using Gradle Kotlin DSL. The project follows these principles:

  • LTS Versions: Java 21 (LTS), Jakarta EE stable
  • Latest Patches: Security updates applied regularly
  • CVE Monitoring: Dependencies checked for known vulnerabilities
  • Compatibility: All versions tested for inter-dependency compatibility

External Services​

ServicePurposeConfiguration
OpenAI APILLM inference for NLP-to-FIX and SWIFT generationQUANTAF_AI_API_KEY env var, configured in quantaf.yml → ai.apiKey
OllamaLocal LLM inference (default provider)Configured via quantaf.yml → ai.baseUrl (default: http://localhost:11434)
DockerContainer runtime for ActiveMQ ArtemisRequired for docker-compose up and Testcontainers

Adding New Dependencies​

To add a new dependency to build.gradle.kts:

  1. Edit build.gradle.kts
  2. Add to appropriate dependencies {} block
  3. Run ./gradlew build to verify compatibility
  4. Commit and push

Example:

implementation("com.example:library:1.0.0")

Next Steps​