# Event Stream Processor Service

Event Stream Processor consumes event messages from the topic-events topic as a result of messages published by the event-sidecar (opens new window) service. Refer to Event Framework for more information on the overall architecture.

The Service delivers logs, including audits, and traces to EFK stack with enabled APM plugin. Based on the event message type, the messages are delivered to different indexes in the Elasticsearch.

# 1. Prerequisites

The service logs all the events to Elasticsearch instance with enabled APM plugin. Sample docker-compose of the Elastic stack is available here (opens new window). The logs and audits are created under custom index template, while the trace data is stored to the default apm-* index. Please, ensure that you have created the mojatemplate as it is described into the event-stream-processor (opens new window) service documentation.

# 2. Architecture overview

# 2.1. Flow overview

# 2.2 Trace processing flow sequence diagram