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Added php-amqp library to talk to RabbitMQ. 

You can get this from https://github.com/tnc/php-amqplib
but I updated the demo programs so that they work.
This commit is contained in:
Paul Baranowski 2011-03-18 17:12:48 -04:00
parent ef0bb8ed78
commit 7484f1a837
10 changed files with 3045 additions and 0 deletions
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Following people contributed to this project:
Barry Pederson <bp@barryp.org> - author of original Python lib
Vadim Zaliva <lord@crocodile.org> - PHP paort
taavi013@gmail.com patches - patches
Sean Murphy http://code.google.com/u/sgmurphy/ - patches
spiderbill http://code.google.com/u/spiderbill/ - patches

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# NOTE #
This library is a fork of the [php-amqplib](http://code.google.com/p/php-amqplib/) library.
We modified that library in order to work with PHP 5.3 Strict.
Also we improved the debug method to increase performance.
We use it daily in prod for sending/consuming 600K + messages per day.
Below is the original README file content. Credits goes to the original authors.
# Original README: #
PHP library implementing Advanced Message Queuing Protocol (AMQP).
The library is port of python code of py-amqplib
http://barryp.org/software/py-amqplib/
It have been tested with RabbitMQ server.
Project home page: http://code.google.com/p/php-amqplib/
For discussion, please join the group:
http://groups.google.com/group/php-amqplib-devel
For bug reports, please use bug tracking system at the project page.
Patched are very welcome!
Author: Vadim Zaliva <lord@crocodile.org>

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<?php
//AMQP PHP library test
require_once('amqp.inc');
$EXCHANGE = 'test';
$BROKER_HOST = 'localhost';
$BROKER_PORT = 5672;
$QUEUE = 'myqueue';
$USER ='guest';
$PASSWORD ='guest';
$msg_body = NULL;
$myCallback = function($msg) {
var_dump($msg);
};
try
{
echo "Creating connection\n";
$conn = new AMQPConnection($BROKER_HOST, $BROKER_PORT,
$USER,
$PASSWORD);
echo "Getting channel\n";
$ch = $conn->channel();
echo "Requesting access\n";
$ch->access_request('/data', false, false, true, true);
echo "Declaring exchange\n";
$ch->exchange_declare($EXCHANGE, 'direct', false, false, false);
echo "Declaring queue\n";
$ch->queue_declare($QUEUE, false, true, false, false);
echo "Binding queue to exchange\n";
$ch->queue_bind($QUEUE, $EXCHANGE);
echo "Receiving message\n";
$ch->basic_consume($QUEUE, $consumer_tag, false, false, false, false, $myCallback);
//$ch->basic_consume($EXCHANGE, "tag", false, false, false, false, 'myCallback');
echo "Waiting\n";
while (count($ch->callbacks)) {
$ch->wait();
}
echo "Closing channel\n";
$ch->close();
echo "Closing connection\n";
$conn->close();
echo "Done.\n";
} catch (Exception $e) {
echo 'Caught exception: ', $e->getMessage();
echo "\nTrace:\n" . $e->getTraceAsString();
}
?>

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<?php
//AMQP PHP library test
require_once('amqp.inc');
$EXCHANGE = 'test';
$BROKER_HOST = 'localhost';
$BROKER_PORT = 5672;
$QUEUE = 'myqueue';
$USER ='guest';
$PASSWORD ='guest';
$msg_body = NULL;
try
{
echo "Creating connection\n";
$conn = new AMQPConnection($BROKER_HOST, $BROKER_PORT,
$USER,
$PASSWORD);
echo "Getting channel\n";
$ch = $conn->channel();
echo "Requesting access\n";
$ch->access_request('/data', false, false, true, true);
echo "Declaring exchange\n";
$ch->exchange_declare($EXCHANGE, 'direct', false, false, false);
//echo "Declaring queue\n";
//$ch->queue_declare($QUEUE);
//echo "Binding queue to exchange\n";
//$ch->queue_bind($QUEUE, $EXCHANGE);
echo "Creating message\n";
$msg = new AMQPMessage($msg_body, array('content_type' => 'text/plain'));
echo "Publishing message\n";
$ch->basic_publish($msg, $EXCHANGE, $QUEUE);
//$ch->basic_publish($msg, $EXCHANGE);
echo "Closing channel\n";
$ch->close();
echo "Closing connection\n";
$conn->close();
echo "Done.\n";
} catch (Exception $e) {
echo 'Caught exception: ', $e->getMessage();
echo "\nTrace:\n" . $e->getTraceAsString();
}
?>

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<?php
/**
* AMQP protocol serialization/deserialization to/from wire format.
*
* http://code.google.com/p/php-amqplib/
* Vadim Zaliva <lord@crocodile.org>
*
*
* To understand all signed/unsinged and 32/64 bit madness in this
* code, please read first the following article:
*
* http://www.mysqlperformanceblog.com/2007/03/27/integers-in-php-running-with-scissors-and-portability/
*/
require_once('hexdump.inc');
/**
* AMQP protocol decimal value.
*
* Values are represented as (n,e) pairs. The actual value
* is n * 10^(-e).
*
* From 0.8 spec: Decimal values are
* not intended to support floating point values, but rather
* business values such as currency rates and amounts. The
* 'decimals' octet is not signed.
*/
class AMQPDecimal
{
public function __construct($n, $e)
{
if($e < 0)
throw new Exception("Decimal exponent value must be unsigned!");
$this->n = $n;
$this->e = $e;
}
public function asBCvalue()
{
return bcdiv($this->n, bcpow(10,$this->e));
}
}
class AMQPWriter
{
public function __construct()
{
$this->out = "";
$this->bits = array();
$this->bitcount = 0;
}
private static function chrbytesplit($x, $bytes)
{
return array_map('chr', AMQPWriter::bytesplit($x,$bytes));
}
/**
* Splits number (could be either int or string) into array of byte
* values (represented as integers) in big-endian byte order.
*/
private static function bytesplit($x, $bytes)
{
if(is_int($x))
{
if($x<0)
$x = sprintf("%u", $x);
}
$res = array();
for($i=0;$i<$bytes;$i++)
{
$b = bcmod($x,'256');
array_unshift($res,(int)$b);
$x=bcdiv($x,'256', 0);
}
if($x!=0)
throw new Exception("Value too big!");
return $res;
}
private function flushbits()
{
if(count($this->bits))
{
$this->out .= implode("", array_map('chr',$this->bits));
$this->bits = array();
$this->bitcount = 0;
}
}
/**
* Get what's been encoded so far.
*/
public function getvalue()
{
$this->flushbits();
return $this->out;
}
/**
* Write a plain Python string, with no special encoding.
*/
public function write($s)
{
$this->flushbits();
$this->out .= $s;
}
/**
* Write a boolean value.
*/
public function write_bit($b)
{
if($b)
$b = 1;
else
$b = 0;
$shift = $this->bitcount % 8;
if($shift == 0)
$last = 0;
else
$last = array_pop($this->bits);
$last |= ($b << $shift);
array_push($this->bits, $last);
$this->bitcount += 1;
}
/**
* Write an integer as an unsigned 8-bit value.
*/
public function write_octet($n)
{
if($n < 0 || $n > 255)
throw new Exception('Octet out of range 0..255');
$this->flushbits();
$this->out .= chr($n);
}
/**
* Write an integer as an unsigned 16-bit value.
*/
public function write_short($n)
{
if($n < 0 || $n > 65535)
throw new Exception('Octet out of range 0..65535');
$this->flushbits();
$this->out .= pack('n', $n);
}
/**
* Write an integer as an unsigned 32-bit value.
*/
public function write_long($n)
{
$this->flushbits();
$this->out .= implode("", AMQPWriter::chrbytesplit($n,4));
}
private function write_signed_long($n)
{
$this->flushbits();
// although format spec for 'N' mentions unsigned
// it will deal with sinned integers as well. tested.
$this->out .= pack('N', $n);
}
/**
* Write an integer as an unsigned 64-bit value.
*/
public function write_longlong($n)
{
$this->flushbits();
$this->out .= implode("", AMQPWriter::chrbytesplit($n,8));
}
/**
* Write a string up to 255 bytes long after encoding.
* Assume UTF-8 encoding.
*/
public function write_shortstr($s)
{
$this->flushbits();
if(strlen($s) > 255)
throw new Exception('String too long');
$this->write_octet(strlen($s));
$this->out .= $s;
}
/*
* Write a string up to 2**32 bytes long. Assume UTF-8 encoding.
*/
public function write_longstr($s)
{
$this->flushbits();
$this->write_long(strlen($s));
$this->out .= $s;
}
/**
* Write unix time_t value as 64 bit timestamp.
*/
public function write_timestamp($v)
{
$this->write_longlong($v);
}
/**
* Write PHP array, as table. Input array format: keys are strings,
* values are (type,value) tuples.
*/
public function write_table($d)
{
$this->flushbits();
$table_data = new AMQPWriter();
foreach($d as $k=>$va)
{
list($ftype,$v) = $va;
$table_data->write_shortstr($k);
if($ftype=='S')
{
$table_data->write('S');
$table_data->write_longstr($v);
} else if($ftype=='I')
{
$table_data->write('I');
$table_data->write_signed_long($v);
} else if($ftype=='D')
{
// 'D' type values are passed AMQPDecimal instances.
$table_data->write('D');
$table_data->write_octet($v->e);
$table_data->write_signed_long($v->n);
} else if($ftype=='T')
{
$table_data->write('T');
$table_data->write_timestamp($v);
} else if($ftype=='F')
{
$table_data->write('F');
$table_data->write_table($v);
}
}
$table_data = $table_data->getvalue();
$this->write_long(strlen($table_data));
$this->write($table_data);
}
}
class AMQPReader
{
public function __construct($str, $sock=NULL)
{
$this->str = $str;
if ($sock !== NULL)
{
$this->sock = new BufferedInput($sock);
} else
{
$this->sock = NULL;
}
$this->offset = 0;
$this->bitcount = $this->bits = 0;
if(((int)4294967296)!=0)
$this->is64bits = true;
else
$this->is64bits = false;
if(!function_exists("bcmul"))
throw new Exception("'bc math' module required");
$this->buffer_read_timeout = 5; // in seconds
}
public function close()
{
if($this->sock)
$this->sock->close();
}
public function read($n)
{
$this->bitcount = $this->bits = 0;
return $this->rawread($n);
}
private function rawread($n)
{
if($this->sock)
{
$res = '';
$read = 0;
$start = time();
while($read < $n && !feof($this->sock->real_sock()) &&
(false !== ($buf = fread($this->sock->real_sock(), $n - $read))))
{
if ($buf == '')
{
usleep(100);
}
else
$start = time();
$read += strlen($buf);
$res .= $buf;
}
if(strlen($res)!=$n)
throw new Exception ("Error reading data. Recevived " .
strlen($res) . " instead of expected $n bytes");
$this->offset += $n;
} else
{
if(strlen($this->str) < $n)
throw new Exception ("Error reading data. Requested $n bytes while string buffer has only " .
strlen($this->str));
$res = substr($this->str,0,$n);
$this->str = substr($this->str,$n);
$this->offset += $n;
}
return $res;
}
public function read_bit()
{
if(!$this->bitcount)
{
$this->bits = ord($this->rawread(1));
$this->bitcount = 8;
}
$result = ($this->bits & 1) == 1;
$this->bits >>= 1;
$this->bitcount -= 1;
return $result;
}
public function read_octet()
{
$this->bitcount = $this->bits = 0;
list(,$res) = unpack('C', $this->rawread(1));
return $res;
}
public function read_short()
{
$this->bitcount = $this->bits = 0;
list(,$res) = unpack('n', $this->rawread(2));
return $res;
}
/**
* Reads 32 bit integer in big-endian byte order.
*
* On 64 bit systems it will return always usngined int
* value in 0..2^32 range.
*
* On 32 bit systems it will return signed int value in
* -2^31...+2^31 range.
*
* Use with caution!
*/
public function read_php_int()
{
list(,$res) = unpack('N', $this->rawread(4));
if($this->is64bits)
{
$sres = sprintf ( "%u", $res );
return (int)$sres;
} else {
return $res;
}
}
// PHP does not have unsigned 32 bit int,
// so we return it as a string
public function read_long()
{
$this->bitcount = $this->bits = 0;
list(,$res) = unpack('N', $this->rawread(4));
$sres = sprintf ( "%u", $res );
return $sres;
}
private function read_signed_long()
{
$this->bitcount = $this->bits = 0;
// In PHP unpack('N') always return signed value,
// on both 32 and 64 bit systems!
list(,$res) = unpack('N', $this->rawread(4));
return $res;
}
// Even on 64 bit systems PHP integers are singed.
// Since we need an unsigned value here we return it
// as a string.
public function read_longlong()
{
$this->bitcount = $this->bits = 0;
$hi = unpack('N', $this->rawread(4));
$lo = unpack('N', $this->rawread(4));
// workaround signed/unsigned braindamage in php
$hi = sprintf ( "%u", $hi[1] );
$lo = sprintf ( "%u", $lo[1] );
return bcadd(bcmul($hi, "4294967296" ), $lo);
}
/**
* Read a utf-8 encoded string that's stored in up to
* 255 bytes. Return it decoded as a Python unicode object.
*/
public function read_shortstr()
{
$this->bitcount = $this->bits = 0;
list(,$slen) = unpack('C', $this->rawread(1));
return $this->rawread($slen);
}
/**
* Read a string that's up to 2**32 bytes, the encoding
* isn't specified in the AMQP spec, so just return it as
* a plain PHP string.
*/
public function read_longstr()
{
$this->bitcount = $this->bits = 0;
$slen = $this->read_php_int();
if($slen<0)
throw new Exception("Strings longer than supported on this platform");
return $this->rawread($slen);
}
/**
* Read and AMQP timestamp, which is a 64-bit integer representing
* seconds since the Unix epoch in 1-second resolution.
*/
function read_timestamp()
{
return $this->read_longlong();
}
/**
* Read an AMQP table, and return as a PHP array. keys are strings,
* values are (type,value) tuples.
*/
public function read_table()
{
$this->bitcount = $this->bits = 0;
$tlen = $this->read_php_int();
if($tlen<0)
throw new Exception("Table is longer than supported");
$table_data = new AMQPReader($this->rawread($tlen));
$result = array();
while($table_data->tell() < $tlen)
{
$name = $table_data->read_shortstr();
$ftype = $table_data->rawread(1);
if($ftype == 'S') {
$val = $table_data->read_longstr();
} else if($ftype == 'I') {
$val = $table_data->read_signed_long();
} else if($ftype == 'D')
{
$e = $table_data->read_octet();
$n = $table_data->read_signed_long();
$val = new AMQPDecimal($n, $e);
} else if($ftype == 'T')
{
$val = $table_data->read_timestamp();
} else if($ftype == 'F')
{
$val = $table_data->read_table(); // recursion
} else {
error_log("Usupported table field type $ftype");
$val = NULL;
}
$result[$name] = array($ftype,$val);
}
return $result;
}
protected function tell()
{
return $this->offset;
}
}
/**
* Abstract base class for AMQP content. Subclasses should override
* the PROPERTIES attribute.
*/
class GenericContent
{
protected static $PROPERTIES = array(
"dummy" => "shortstr"
);
public function __construct($props, $prop_types=NULL)
{
if($prop_types)
$this->prop_types = $prop_types;
else
$this->prop_types = GenericContent::$PROPERTIES;
$d = array();
if ($props)
$d = array_intersect_key($props, $this->prop_types);
else
$d = array();
$this->properties = $d;
}
/**
* Look for additional properties in the 'properties' dictionary,
* and if present - the 'delivery_info' dictionary.
*/
public function get($name)
{
if(array_key_exists($name,$this->properties))
return $this->properties[$name];
if(isset($this->delivery_info))
if(array_key_exists($name,$this->delivery_info))
return $this->delivery_info[$name];
throw new Exception("No such property");
}
/**
* Given the raw bytes containing the property-flags and
* property-list from a content-frame-header, parse and insert
* into a dictionary stored in this object as an attribute named
* 'properties'.
*/
public function load_properties($raw_bytes)
{
$r = new AMQPReader($raw_bytes);
// Read 16-bit shorts until we get one with a low bit set to zero
$flags = array();
while(true)
{
$flag_bits = $r->read_short();
array_push($flags, $flag_bits);
if(($flag_bits & 1) == 0)
break;
}
$shift = 0;
$d = array();
foreach ($this->prop_types as $key => $proptype)
{
if($shift == 0) {
if(!$flags) {
break;
}
$flag_bits = array_shift($flags);
$shift = 15;
}
if($flag_bits & (1 << $shift))
$d[$key] = call_user_func(array($r,"read_".$proptype));
$shift -= 1;
}
$this->properties = $d;
}
/**
* serialize the 'properties' attribute (a dictionary) into the
* raw bytes making up a set of property flags and a property
* list, suitable for putting into a content frame header.
*/
public function serialize_properties()
{
$shift = 15;
$flag_bits = 0;
$flags = array();
$raw_bytes = new AMQPWriter();
foreach ($this->prop_types as $key => $proptype)
{
if(array_key_exists($key,$this->properties))
$val = $this->properties[$key];
else
$val = NULL;
if($val != NULL)
{
if($shift == 0)
{
array_push($flags, $flag_bits);
$flag_bits = 0;
$shift = 15;
}
$flag_bits |= (1 << $shift);
if($proptype != "bit")
call_user_func(array($raw_bytes, "write_" . $proptype),
$val);
}
$shift -= 1;
}
array_push($flags, $flag_bits);
$result = new AMQPWriter();
foreach($flags as $flag_bits)
$result->write_short($flag_bits);
$result->write($raw_bytes->getvalue());
return $result->getvalue();
}
}
class BufferedInput
{
public function __construct($sock)
{
$this->block_size = 8192;
$this->sock = $sock;
$this->reset("");
}
public function real_sock()
{
return $this->sock;
}
public function read($n)
{
if ($this->offset >= strlen($this->buffer))
{
if (!($rv = $this->populate_buffer()))
{
return $rv;
}
}
return $this->read_buffer($n);
}
public function close()
{
fclose($this->sock);
$this->reset("");
}
private function read_buffer($n)
{
$n = min($n, strlen($this->buffer) - $this->offset);
if ($n === 0)
{
// substr("", 0, 0) => FALSE, which screws up read loops that are
// expecting non-blocking reads to return "". This avoids that edge
// case when the buffer is empty/used up.
return "";
}
$block = substr($this->buffer, $this->offset, $n);
$this->offset += $n;
return $block;
}
private function reset($block)
{
$this->buffer = $block;
$this->offset = 0;
}
private function populate_buffer()
{
if(feof($this->sock))
{
$this->reset("");
return FALSE;
}
$block = fread($this->sock, $this->block_size);
if ($block !== FALSE)
{
$this->reset($block);
return TRUE;
} else
{
return $block;
}
}
}
?>

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library/php-amqplib/demo/amqp_consumer.php Normal file
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#!/usr/bin/php
<?php
/**
* Repeatedly receive messages from queue until it receives a message with
* 'quit' as the body.
*
* @author Sean Murphy<sean@iamseanmurphy.com>
*/
require_once('../amqp.inc');
$HOST = 'localhost';
$PORT = 5672;
$USER = 'guest';
$PASS = 'guest';
$VHOST = '/';
$EXCHANGE = 'router';
$QUEUE = 'msgs';
$CONSUMER_TAG = 'consumer';
$conn = new AMQPConnection($HOST, $PORT, $USER, $PASS);
$ch = $conn->channel();
$ch->access_request($VHOST, false, false, true, true);
$ch->queue_declare($QUEUE);
$ch->exchange_declare($EXCHANGE, 'direct', false, false, false);
$ch->queue_bind($QUEUE, $EXCHANGE);
function process_message($msg) {
global $ch, $CONSUMER_TAG;
echo "\n--------\n";
echo $msg->body;
echo "\n--------\n";
$ch->basic_ack($msg->delivery_info['delivery_tag']);
// Cancel callback
if ($msg->body === 'quit') {
$ch->basic_cancel($CONSUMER_TAG);
}
}
$ch->basic_consume($QUEUE, $CONSUMER_TAG, false, false, false, false, 'process_message');
// Loop as long as the channel has callbacks registered
echo "Waiting for messages...\n";
while(count($ch->callbacks)) {
$ch->wait();
}
$ch->close();
$conn->close();
?>

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library/php-amqplib/demo/amqp_publisher.php Normal file
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#!/usr/bin/php
<?php
/**
* Sends a message to a queue
*
* @author Sean Murphy<sean@iamseanmurphy.com>
*/
require_once('../amqp.inc');
$HOST = 'localhost';
$PORT = 5672;
$USER = 'guest';
$PASS = 'guest';
$VHOST = '/';
$EXCHANGE = 'router';
$QUEUE = 'msgs';
$conn = new AMQPConnection($HOST, $PORT, $USER, $PASS);
$ch = $conn->channel();
$ch->access_request($VHOST, false, false, true, true);
$ch->exchange_declare($EXCHANGE, 'direct', false, false, false);
$msg_body = implode(' ', array_slice($argv, 1));
$msg = new AMQPMessage($msg_body, array('content_type' => 'text/plain'));
$ch->basic_publish($msg, $EXCHANGE);
echo "Sent message '".$msg_body."'\n";
$ch->close();
$conn->close();
?>

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<?php
/**
* View any string as a hexdump.
*
* This is most commonly used to view binary data from streams
* or sockets while debugging, but can be used to view any string
* with non-viewable characters.
*
* @version 1.3.2
* @author Aidan Lister <aidan@php.net>
* @author Peter Waller <iridum@php.net>
* @link http://aidanlister.com/repos/v/function.hexdump.php
* @param string $data The string to be dumped
* @param bool $htmloutput Set to false for non-HTML output
* @param bool $uppercase Set to true for uppercase hex
* @param bool $return Set to true to return the dump
*/
function hexdump ($data, $htmloutput = true, $uppercase = false, $return = false)
{
// Init
$hexi = '';
$ascii = '';
$dump = ($htmloutput === true) ? '<pre>' : '';
$offset = 0;
$len = strlen($data);
// Upper or lower case hexidecimal
$x = ($uppercase === false) ? 'x' : 'X';
// Iterate string
for ($i = $j = 0; $i < $len; $i++)
{
// Convert to hexidecimal
$hexi .= sprintf("%02$x ", ord($data[$i]));
// Replace non-viewable bytes with '.'
if (ord($data[$i]) >= 32) {
$ascii .= ($htmloutput === true) ?
htmlentities($data[$i]) :
$data[$i];
} else {
$ascii .= '.';
}
// Add extra column spacing
if ($j === 7) {
$hexi .= ' ';
$ascii .= ' ';
}
// Add row
if (++$j === 16 || $i === $len - 1) {
// Join the hexi / ascii output
$dump .= sprintf("%04$x %-49s %s", $offset, $hexi, $ascii);
// Reset vars
$hexi = $ascii = '';
$offset += 16;
$j = 0;
// Add newline
if ($i !== $len - 1) {
$dump .= "\n";
}
}
}
// Finish dump
$dump .= $htmloutput === true ?
'</pre>' :
'';
$dump .= "\n";
// Output method
if ($return === false) {
echo $dump;
} else {
return $dump;
}
}
?>