openova/products/fabric

OpenOva Fabric

Event-driven data integration and lakehouse analytics platform.

Status: Accepted | Updated: 2026-02-26

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Overview

OpenOva Fabric merges data lakehouse and microservices integration into a single product. It provides event-driven data pipelines, stream processing, saga orchestration, and analytics — replacing the former separate Titan and Fuse products.

flowchart TB
    subgraph Sources["Data Sources"]
        CDC[Debezium CDC]
        Events[Event Producers]
    end

    subgraph Streaming["Event Streaming"]
        Kafka[Strimzi/Kafka]
    end

    subgraph Processing["Stream Processing"]
        Flink[Apache Flink]
    end

    subgraph Orchestration["Workflow Orchestration"]
        Temporal[Temporal]
    end

    subgraph Storage["Data Storage"]
        Iceberg[Apache Iceberg]
        ClickHouse[ClickHouse]
        MinIO[MinIO S3]
    end

    Sources --> Streaming
    Streaming --> Processing
    Streaming --> Orchestration
    Processing --> Storage
    Orchestration --> Streaming

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Components

All components are in platform/ (flat structure):

Component	Purpose	Location
strimzi	Apache Kafka event streaming	platform/strimzi
flink	Stream and batch processing	platform/flink
temporal	Saga orchestration + compensation	platform/temporal
debezium	Change data capture (CDC)	platform/debezium
iceberg	Open table format (lakehouse)	platform/iceberg
clickhouse	OLAP analytics database	platform/clickhouse
minio	Object storage (S3)	platform/minio

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Use Cases

Event-Driven Integration

Source DB → Debezium CDC → Kafka → Flink Processing → Target DB/Iceberg

Saga Orchestration

Temporal Workflow → Step 1 (Kafka) → Step 2 (Kafka) → Compensation on failure

Real-Time Analytics

Kafka → Flink → ClickHouse → Grafana Dashboards

Data Lakehouse

Kafka → Flink → Iceberg (MinIO) → SQL queries via ClickHouse

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Resource Requirements

Component	Replicas	CPU	Memory
Strimzi/Kafka	3	2	8Gi
Flink JobManager	1	1	2Gi
Flink TaskManager	2	2	4Gi
Temporal	3	1	2Gi
ClickHouse	2	4	16Gi
Debezium	1	0.5	1Gi
Total	-	14.5	41Gi

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Deployment

apiVersion: kustomize.toolkit.fluxcd.io/v1
kind: Kustomization
metadata:
  name: fabric
  namespace: flux-system
spec:
  interval: 10m
  path: ./products/fabric/deploy
  prune: true
  sourceRef:
    kind: GitRepository
    name: openova-blueprints

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Configuration

Parameter	Description	Default
TENANT	Tenant identifier	Required
DOMAIN	Base domain	Required
KAFKA_REPLICAS	Kafka broker count	3
FLINK_PARALLELISM	Flink task parallelism	2
CLICKHOUSE_SHARDS	ClickHouse shard count	1

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Part of OpenOva