Package org.apache.solr.servlet

Class RateLimitManager

java.lang.Object

org.apache.solr.servlet.RateLimitManager

All Implemented Interfaces:

org.apache.solr.common.cloud.ClusterPropertiesListener

@ThreadSafe
public class RateLimitManager
extends Object
implements org.apache.solr.common.cloud.ClusterPropertiesListener

This class is responsible for managing rate limiting per request type. Rate limiters can be registered with this class against a corresponding type. There can be only one rate limiter associated with a request type.

The actual rate limiting and the limits should be implemented in the corresponding RequestRateLimiter implementation. RateLimitManager is responsible for the orchestration but not the specifics of how the rate limiting is being done for a specific request type.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	RateLimitManager.Builder

Field Summary

Fields

Modifier and Type	Field	Description
static int	DEFAULT_CONCURRENT_REQUESTS
static long	DEFAULT_SLOT_ACQUISITION_TIMEOUT_MS
static String	ERROR_MESSAGE

Constructor Summary

Constructors

Constructor	Description
RateLimitManager()

Method Summary

Modifier and Type	Method	Description
void	decrementActiveRequests(javax.servlet.http.HttpServletRequest request)
RequestRateLimiter	getRequestRateLimiter(org.apache.solr.client.solrj.SolrRequest.SolrRequestType requestType)
boolean	handleRequest(javax.servlet.http.HttpServletRequest request)
boolean	onChange(Map<String,Object> properties)
void	registerRequestRateLimiter(RequestRateLimiter requestRateLimiter, org.apache.solr.client.solrj.SolrRequest.SolrRequestType requestType)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ERROR_MESSAGE

public static final String ERROR_MESSAGE

See Also:

Constant Field Values

DEFAULT_CONCURRENT_REQUESTS

public static final int DEFAULT_CONCURRENT_REQUESTS

DEFAULT_SLOT_ACQUISITION_TIMEOUT_MS

public static final long DEFAULT_SLOT_ACQUISITION_TIMEOUT_MS

See Also:

Constant Field Values

Constructor Detail

RateLimitManager

public RateLimitManager()

Method Detail

onChange

public boolean onChange(Map<String,Object> properties)

Specified by:

onChange in interface org.apache.solr.common.cloud.ClusterPropertiesListener

handleRequest

public boolean handleRequest(javax.servlet.http.HttpServletRequest request)
                      throws InterruptedException

Throws:

InterruptedException

decrementActiveRequests

public void decrementActiveRequests(javax.servlet.http.HttpServletRequest request)

registerRequestRateLimiter

public void registerRequestRateLimiter(RequestRateLimiter requestRateLimiter,
                                       org.apache.solr.client.solrj.SolrRequest.SolrRequestType requestType)

getRequestRateLimiter

public RequestRateLimiter getRequestRateLimiter(org.apache.solr.client.solrj.SolrRequest.SolrRequestType requestType)