java-design-patterns/microservices-log-aggregation/etc/log-aggregation.puml

@startuml

package com.iluwatar.logaggregation {

  class App {
    + main(args: String[]) {static}
  }

  class CentralLogStore {
    - logs: ConcurrentLinkedQueue<LogEntry>
    + storeLog(logEntry: LogEntry)
    + displayLogs()
  }

  class LogAggregator {
    - BUFFER_THRESHOLD: int {static}
    - centralLogStore: CentralLogStore
    - buffer: ConcurrentLinkedQueue<LogEntry>
    - minLogLevel: LogLevel
    - executorService: ExecutorService
    - logCount: AtomicInteger
    + collectLog(logEntry: LogEntry)
    + stop()
  }

  class LogEntry {
    - serviceName: String
    - level: LogLevel
    - message: String
    - timestamp: LocalDateTime
  }

  enum LogLevel {
    DEBUG
    INFO
    ERROR
  }

  class LogProducer {
    - serviceName: String
    - aggregator: LogAggregator
    + generateLog(level: LogLevel, message: String)
  }
}

LogProducer --> "-aggregator" LogAggregator
LogAggregator --> "-centralLogStore" CentralLogStore
LogAggregator --> "-buffer" LogEntry
CentralLogStore --> "-logs" LogEntry

@enduml