# ankitbharambe21/event-processor architecture

> Architecture diagram of the GitHub repository ankitbharambe21/event-processor, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-27). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/ankitbharambe21/event-processor
- Repository: https://github.com/ankitbharambe21/event-processor

## Overview

This is a small Java event-aggregation library. A caller supplies an event stream to EventStreamProcessor, which filters invalid events, concurrently groups accepted events by ID, deduplicates timestamps, and returns an unmodifiable map of aggregate statistics. The sampled source shows this runtime path; MutableAggregateAccumulator is not used by it, and the empty README provides no additional product capabilities.

Main entry points: [`src/main/java/com/library/eventprocessor/EventStreamProcessor.java`](https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/EventStreamProcessor.java) (Stream processor), [`src/main/java/com/library/eventprocessor/ParallelSafeAccumulator.java`](https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/ParallelSafeAccumulator.java) (Concurrent accumulator), [`src/main/java/com/library/eventprocessor/EventValidator.java`](https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/EventValidator.java) (Event validator), [`src/main/java/com/library/eventprocessor/Event.java`](https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/Event.java) (Event)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_api["Processing API"]
  node_processor["Stream processor"]
  node_validator["Event validator"]
  node_event["Event<br/>[Event.java]"]
end

subgraph group_aggregation["Aggregation"]
  node_collector["Grouping collector"]
  node_accumulator["Concurrent accumulator"]
  node_aggregate["Aggregate result"]
end

node_caller(("Library caller"))

node_caller -->|"calls process"| node_processor
node_caller -->|"supplies stream"| node_event
node_processor -->|"filters via"| node_validator
node_processor -->|"collects with"| node_collector
node_collector -->|"updates by ID"| node_accumulator
node_processor -->|"snapshots"| node_accumulator
node_accumulator -->|"creates"| node_aggregate
node_processor -->|"returns map"| node_caller

click node_processor "https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/EventStreamProcessor.java"
click node_validator "https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/EventValidator.java"
click node_event "https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/Event.java"
click node_collector "https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/EventStreamProcessor.java"
click node_accumulator "https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/ParallelSafeAccumulator.java"
click node_aggregate "https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/EventAggregate.java"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_processor,node_validator,node_event toneBlue
class node_collector,node_accumulator,node_aggregate toneAmber
class node_caller toneIndigo
```

## Components

### Processing API

- [Stream processor](https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/EventStreamProcessor.java): `src/main/java/com/library/eventprocessor/EventStreamProcessor.java`
- [Event validator](https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/EventValidator.java): `src/main/java/com/library/eventprocessor/EventValidator.java`
- [Event](https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/Event.java): `src/main/java/com/library/eventprocessor/Event.java`

### Aggregation

- [Grouping collector](https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/EventStreamProcessor.java): `src/main/java/com/library/eventprocessor/EventStreamProcessor.java`
- [Concurrent accumulator](https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/ParallelSafeAccumulator.java): `src/main/java/com/library/eventprocessor/ParallelSafeAccumulator.java`
- [Aggregate result](https://github.com/ankitbharambe21/event-processor/blob/master/src/main/java/com/library/eventprocessor/EventAggregate.java): `src/main/java/com/library/eventprocessor/EventAggregate.java`

### Other components

- **Library caller**

## Connections

- Library caller → Stream processor: calls process
- Library caller → Event: supplies stream
- Stream processor → Event validator: filters via
- Stream processor → Grouping collector: collects with
- Grouping collector → Concurrent accumulator: updates by ID
- Stream processor → Concurrent accumulator: snapshots
- Concurrent accumulator → Aggregate result: creates
- Stream processor → Library caller: returns map