com.obsidiandynamics.blackstrom.handler.MessageContext Maven / Gradle / Ivy

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Transactional event fabric for the JVM

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package com.obsidiandynamics.blackstrom.handler;

import com.obsidiandynamics.blackstrom.ledger.*;
import com.obsidiandynamics.blackstrom.model.*;
import com.obsidiandynamics.blackstrom.retention.*;
import com.obsidiandynamics.flow.*;

public interface MessageContext {
  Ledger getLedger();
  
  Object getHandlerId();
  
  Retention getRetention();
  
  default Confirmation begin(Message message) {
    return getRetention().begin(this, message);
  }
  
  default void beginAndConfirm(Message message) {
    begin(message).confirm();
  }
  
  default boolean isAssigned(Message message) {
    return getLedger().isAssigned(getHandlerId(), message.getShard());
  }
}