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// Copyright © 2012-2021 VLINGO LABS. All rights reserved.
//
// This Source Code Form is subject to the terms of the
// Mozilla Public License, v. 2.0. If a copy of the MPL
// was not distributed with this file, You can obtain
// one at https://mozilla.org/MPL/2.0/.

package io.vlingo.xoom.actors.logging;

import io.vlingo.xoom.actors.Address;

import java.time.Instant;
import java.util.Optional;

/**
 * Represents a log event to be sent to a logging Actor asynchronously.
 * Upon it's creation, using the {@link LogEvent.Builder}, the builder will gather as much context information as possible in order to enrich the logs.
 */
public class LogEvent {
  private final Class source;
  private final String message;
  private final Object[] args;
  private final Throwable throwable;

  //MDC fields
  private final String sourceThread;
  private final Instant eventTimestamp;
  private final Address sourceActorAddress;

  public LogEvent(final Class source, final String sourceThread, final Instant eventTimestamp, final String message, final Object[] args,
                  final Throwable throwable, final Address sourceActorAddress) {
    this.source = source;
    this.message = message;
    this.args = args;
    this.throwable = throwable;
    this.sourceThread = sourceThread;
    this.eventTimestamp = eventTimestamp;
    this.sourceActorAddress = sourceActorAddress;
  }

  public Class getSource() {
    return source;
  }

  public String getMessage() {
    return message;
  }

  public Object[] getArgs() {
    return args;
  }

  public Throwable getThrowable() {
    return throwable;
  }

  public Optional getSourceThread() {
    return Optional.ofNullable(sourceThread);
  }

  public Optional getEventTimestamp() {
    return Optional.ofNullable(eventTimestamp);
  }

  public Optional
getSourceActorAddress() { return Optional.ofNullable(sourceActorAddress); } public static class Builder { private final Class source; private final String message; private final String sourceThread; private final Instant eventTimestamp; private Object[] args; private Throwable throwable; private Address sourceActorAddress; public Builder(final Class source, final String message, final String sourceThread, final Instant eventTimestamp) { this.source = source; this.message = message; this.sourceThread = sourceThread; this.eventTimestamp = eventTimestamp; } public Builder(final Class source, final String message) { this.source = source; this.message = message; this.sourceThread = Thread.currentThread().getName(); this.eventTimestamp = Instant.now(); } public Builder withArgs(Object... args) { this.args = args; return this; } public Builder withThrowable(Throwable throwable) { this.throwable = throwable; return this; } public Builder withSourceActorAddress(final Address sourceActorAddress) { this.sourceActorAddress = sourceActorAddress; return this; } public LogEvent build() { return new LogEvent(this.source, this.sourceThread, this.eventTimestamp, this.message, this.args, this.throwable, sourceActorAddress); } } }




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