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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.messagebus;
import com.yahoo.messagebus.routing.RetryPolicy;
import com.yahoo.messagebus.routing.RetryTransientErrorsPolicy;
import java.util.ArrayList;
import java.util.List;
/**
* To facilitate several configuration parameters to the {@link MessageBus} constructor, all parameters are held by this
* class. This class has reasonable default values for each parameter.
*
* @author Simon Thoresen Hult
*/
public class MessageBusParams {
private final List<Protocol> protocols = new ArrayList<>();
private RetryPolicy retryPolicy;
private int maxPendingCount;
private MessagebusConfig config;
/**
* Constructs a new instance of this parameter object with default values for all members.
*/
public MessageBusParams() {
retryPolicy = new RetryTransientErrorsPolicy();
maxPendingCount = 1024;
config = null;
}
/**
* Implements the copy constructor.
*
* @param params The object to copy.
*/
public MessageBusParams(MessageBusParams params) {
protocols.addAll(params.protocols);
retryPolicy = params.retryPolicy;
maxPendingCount = params.maxPendingCount;
config = params.config;
}
/**
* Returns the retry policy for the resender.
*
* @return The policy.
*/
public RetryPolicy getRetryPolicy() {
return retryPolicy;
}
/**
* Sets the retry policy for the resender.
*
* @param retryPolicy The policy to set.
* @return This, to allow chaining.
*/
public MessageBusParams setRetryPolicy(RetryPolicy retryPolicy) {
this.retryPolicy = retryPolicy;
return this;
}
/**
* Adds a new protocol to this.
*
* @param protocol The protocol to add.
* @return This, to allow chaining.
*/
public MessageBusParams addProtocol(Protocol protocol) {
protocols.add(protocol);
return this;
}
/**
* Registers multiple protocols with this by calling {@link #addProtocol(Protocol)} multiple times.
*
* @param protocols The protocols to register.
* @return This, to allow chaining.
*/
public MessageBusParams addProtocols(List<Protocol> protocols) {
for (Protocol protocol : protocols) {
addProtocol(protocol);
}
return this;
}
/**
* Returns the number of protocols that are contained in this.
*
* @return The number of protocols.
*/
public int getNumProtocols() {
return protocols.size();
}
/**
* Returns the protocol at the given index.
*
* @param i The index of the protocol to return.
* @return The protocol object.
*/
public Protocol getProtocol(int i) {
return protocols.get(i);
}
/**
* Returns the maximum number of pending messages.
*
* @return The count limit.
*/
public int getMaxPendingCount() {
return maxPendingCount;
}
/**
* Sets the maximum number of allowed pending messages.
*
* @param maxCount The count limit to set.
* @return This, to allow chaining.
*/
public MessageBusParams setMaxPendingCount(int maxCount) {
this.maxPendingCount = maxCount;
return this;
}
/**
* Returns the maximum number of bytes allowed for pending messages.
*
* @return The size limit.
*/
@Deprecated(forRemoval = true)
public int getMaxPendingSize() {
return Integer.MAX_VALUE;
}
/**
* Sets the maximum number of bytes allowed for pending messages.
*
* @param maxSize The size limit to set.
* @return This, to allow chaining.
*/
@Deprecated(forRemoval = true)
public MessageBusParams setMaxPendingSize(int maxSize) {
return this;
}
public MessagebusConfig getMessageBusConfig() {
return config;
}
public MessageBusParams setMessageBusConfig(MessagebusConfig config) {
this.config = config;
return this;
}
}
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