ApacheTrafficServer: Congestion.h File Reference

A brief file description. More...

#include "libts.h"
#include "P_EventSystem.h"
#include "ControlBase.h"
#include "ControlMatcher.h"
#include "CongestionStats.h"

Include dependency graph for Congestion.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	CongestionControlRule
class	CongestionControlRecord
struct	FailHistory
struct	CongestionEntry
Defines
#define	CONGESTION_EVENT_CONGESTED_ON_M (CONGESTION_EVENT_EVENTS_START + 1)
#define	CONGESTION_EVENT_CONGESTED_ON_F (CONGESTION_EVENT_EVENTS_START + 2)
#define	CONGESTION_EVENT_CONGESTED_LIST_DONE (CONGESTION_EVENT_EVENTS_START + 3)
#define	CONGESTION_EVENT_CONTROL_LOOKUP_DONE (CONGESTION_EVENT_EVENTS_START + 4)
#define	CONG_HIST_ENTRIES 17
Typedefs
typedef unsigned short	cong_hist_t
Enumerations
enum	{ PER_IP, PER_HOST }
Functions
void	initCongestionControl ()
CongestionControlRecord *	CongestionControlled (RequestData *rdata)
uint64_t	make_key (char hostname, int len, sockaddr const ip, CongestionControlRecord *record)
uint64_t	make_key (char hostname, sockaddr const ip, CongestionControlRecord *record)
uint64_t	make_key (char hostname, int len, sockaddr const ip, char *prefix, int prelen, short port=0)
Action *	get_congest_entry (Continuation cont, HttpRequestData data, CongestionEntry **ppEntry)
Action *	get_congest_list (Continuation cont, MIOBuffer buffer, int format)
void	remove_congested_entry (uint64_t key)
void	remove_all_congested_entry (void)
void	remove_congested_entry (char buf, MIOBuffer out_buffer)
Variables
InkRand	CongestionRand
int	congestionControlEnabled
int	congestionControlLocalTime

Detailed Description

A brief file description.

License

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Definition in file Congestion.h.

Define Documentation

#define CONG_HIST_ENTRIES 17

Definition at line 172 of file Congestion.h.

Referenced by FailHistory::get_bin_events(), FailHistory::init(), and FailHistory::regist_event().

#define CONGESTION_EVENT_CONGESTED_LIST_DONE (CONGESTION_EVENT_EVENTS_START + 3)

Definition at line 42 of file Congestion.h.

Referenced by CongestionDBCont::get_congest_list().

#define CONGESTION_EVENT_CONGESTED_ON_F (CONGESTION_EVENT_EVENTS_START + 2)

Definition at line 41 of file Congestion.h.

Referenced by HttpSM::do_http_server_open(), HttpDebugNames::get_event_name(), HttpSM::state_http_server_open(), and HttpSM::state_raw_http_server_open().

#define CONGESTION_EVENT_CONGESTED_ON_M (CONGESTION_EVENT_EVENTS_START + 1)

Definition at line 40 of file Congestion.h.

Referenced by HttpSM::do_http_server_open(), HttpDebugNames::get_event_name(), HttpSM::state_http_server_open(), and HttpSM::state_raw_http_server_open().

#define CONGESTION_EVENT_CONTROL_LOOKUP_DONE (CONGESTION_EVENT_EVENTS_START + 4)

Definition at line 43 of file Congestion.h.

Referenced by CongestionDBCont::get_congest_entry(), and HttpSM::state_congestion_control_lookup().

Typedef Documentation

typedef unsigned short cong_hist_t

Definition at line 171 of file Congestion.h.

Enumeration Type Documentation

anonymous enum

Enumerator:

PER_IP
PER_HOST

Definition at line 49 of file Congestion.h.

Function Documentation

CongestionControlRecord* CongestionControlled ( RequestData * rdata )

Definition at line 418 of file Congestion.cc.

References congestionControlEnabled, ControlMatcher< Data, Result >::Match(), CongestionControlRecord::pRecord, and CongestionControlRule::record.

Referenced by get_congest_entry(), and CongestionEntry::validate().

Action* get_congest_entry	(	Continuation *	cont,
		HttpRequestData *	data,
		CongestionEntry **	ppEntry
	)

Definition at line 468 of file CongestionDB.cc.

Referenced by HttpSM::do_congestion_control_lookup().

Action* get_congest_list	(	Continuation *	cont,
		MIOBuffer *	buffer,
		int	format
	)

Definition at line 521 of file CongestionDB.cc.

void initCongestionControl ( )

uint64_t make_key	(	char *	hostname,
		sockaddr const *	ip,
		CongestionControlRecord *	record
	)

Definition at line 433 of file Congestion.cc.

References make_key().

Referenced by CCCongestionDBTestCont::gen_CongestionEntry(), get_congest_entry(), make_key(), remove_congested_entry(), and CongestionEntry::validate().

uint64_t make_key	(	char *	hostname,
		int	len,
		sockaddr const *	ip,
		char *	prefix,
		int	prelen,
		short	port = `0`
	)

Definition at line 466 of file Congestion.cc.

References ats_ip_addr8_cast(), ats_ip_addr_size(), ink_code_incr_md5_final(), ink_code_incr_md5_init(), and ink_code_incr_md5_update().

uint64_t make_key	(	char *	hostname,
		int	len,
		sockaddr const *	ip,
		CongestionControlRecord *	record
	)

Definition at line 443 of file Congestion.cc.

References ats_ip_addr8_cast(), ats_ip_addr_size(), CongestionControlRecord::congestion_scheme, ink_code_incr_md5_final(), ink_code_incr_md5_init(), ink_code_incr_md5_update(), PER_HOST, CongestionControlRecord::port, CongestionControlRecord::prefix, and CongestionControlRecord::prefix_len.

void remove_all_congested_entry ( void )

Definition at line 565 of file CongestionDB.cc.

Referenced by remove_congested_entry().

void remove_congested_entry	(	char *	buf,
		MIOBuffer *	out_buffer
	)

Definition at line 591 of file CongestionDB.cc.

void remove_congested_entry ( uint64_t key )

Definition at line 573 of file CongestionDB.cc.

Referenced by remove_congested_entry().

Variable Documentation

int congestionControlEnabled

Definition at line 93 of file Congestion.cc.

Referenced by CongestionControlEnabledChanged(), CongestionControlled(), CongestionDBCont::GC(), get_congest_entry(), get_congest_list(), initCongestionControl(), CongestionMatcherTable::reconfigure(), and HttpSM::set_next_state().

int congestionControlLocalTime

Definition at line 94 of file Congestion.cc.

Referenced by initCongestionControl(), and CongestionEntry::sprint().

InkRand CongestionRand