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Merge remote-tracking branch 'upstream/master' into hunter

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Steven Geddis 2018-03-02 09:33:36 +01:00
parent 3080950cff 86262b1024
commit e3c6c9df41
29 changed files with 1080 additions and 474 deletions
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4
Makefile
View File

@ -2,8 +2,8 @@ PREFIX ?= /usr
INCLUDE_DIR = ${PREFIX}/include
LIBRARY_DIR = ${PREFIX}/lib
export LIBRARY_NAME = amqpcpp
export SONAME = 2.8
export VERSION = 2.8.0
export SONAME = 3.0
export VERSION = 3.0.0
all:
$(MAKE) -C src all

65
README.md
View File

@ -799,44 +799,54 @@ in almost any form:
````c++
/**
* Publish a message to an exchange
*
* The following flags can be used
*
* - mandatory if set, an unroutable message will be sent back to
* the client (currently not supported)
*
* - immediate if set, a message that could not immediately be consumed
* is returned to the client (currently not supported)
*
* If either of the two flags is set, and the message could not immediately
* be published, the message is returned by the server to the client. However,
* at this moment in time, the AMQP-CPP library does not support catching
* such returned messages.
*
*
* You have to supply the name of an exchange and a routing key. RabbitMQ will
* then try to send the message to one or more queues. With the optional flags
* parameter you can specify what should happen if the message could not be routed
* to a queue. By default, unroutable message are silently discarded.
*
* This method returns a reference to a DeferredPublisher object. You can use
* this returned object to install callbacks that are called when an undeliverable
* message is returned, or to set the callback that is called when the server
* confirms that the message was received.
*
* To enable handling returned messages, or to enable publisher-confirms, you must
* not only set the callback, but also pass in appropriate flags to enable this
* feature. If you do not pass in these flags, your callbacks will not be called.
* If you are not at all interested in returned messages or publish-confirms, you
* can ignore the flag and the returned object.
*
* Watch out: the channel returns _the same_ DeferredPublisher object for all
* calls to the publish() method. This means that the callbacks that you install
* for the first published message are also used for subsequent messages _and_
* it means that if you install a different callback for a later publish
* operation, it overwrites your earlier callbacks
*
* The following flags can be supplied:
*
* - mandatory If set, server returns messages that are not sent to a queue
* - immediate If set, server returns messages that can not immediately be forwarded to a consumer.
*
* @param exchange the exchange to publish to
* @param routingkey the routing key
* @param flags optional flags (see above)
* @param envelope the full envelope to send
* @param message the message to send
* @param size size of the message
* @param flags optional flags
*/
bool publish(const std::string &exchange, const std::string &routingKey, int flags, const AMQP::Envelope &envelope);
bool publish(const std::string &exchange, const std::string &routingKey, const AMQP::Envelope &envelope);
bool publish(const std::string &exchange, const std::string &routingKey, int flags, const std::string &message);
bool publish(const std::string &exchange, const std::string &routingKey, const std::string &message);
bool publish(const std::string &exchange, const std::string &routingKey, int flags, const char *message, size_t size);
bool publish(const std::string &exchange, const std::string &routingKey, const char *message, size_t size);
DeferredPublisher &publish(const std::string &exchange, const std::string &routingKey, const Envelope &envelope, int flags = 0) { return _implementation->publish(exchange, routingKey, envelope, flags); }
DeferredPublisher &publish(const std::string &exchange, const std::string &routingKey, const std::string &message, int flags = 0) { return _implementation->publish(exchange, routingKey, Envelope(message.data(), message.size()), flags); }
DeferredPublisher &publish(const std::string &exchange, const std::string &routingKey, const char *message, size_t size, int flags = 0) { return _implementation->publish(exchange, routingKey, Envelope(message, size), flags); }
DeferredPublisher &publish(const std::string &exchange, const std::string &routingKey, const char *message, int flags = 0) { return _implementation->publish(exchange, routingKey, Envelope(message, strlen(message)), flags); }
````
Published messages are normally not confirmed by the server, and the RabbitMQ
will not send a report back to inform you whether the message was succesfully
published or not. Therefore the publish method does not return a Deferred
object.
published or not. But with the flags you can instruct RabbitMQ to send back
the message if it was undeliverable.
As long as no error is reported via the Channel::onError() method, you can safely
assume that your messages were delivered.
This can of course be a problem when you are publishing many messages. If you get
You can also use transactions to ensure that your messages get delivered.
Let's say that you are publishing many messages in a row. If you get
an error halfway through there is no way to know for sure how many messages made
it to the broker and how many should be republished. If this is important, you can
wrap the publish commands inside a transaction. In this case, if an error occurs,
@ -1002,7 +1012,6 @@ need additional attention:
- ability to set up secure connections (or is this fully done on the IO level)
- login with other protocols than login/password
- publish confirms
- returned messages
We also need to add more safety checks so that strange or invalid data from
RabbitMQ does not break the library (although in reality RabbitMQ only sends

1
include/amqpcpp.h
View File

@ -71,6 +71,7 @@
#include "amqpcpp/deferreddelete.h"
#include "amqpcpp/deferredcancel.h"
#include "amqpcpp/deferredget.h"
#include "amqpcpp/deferredpublisher.h"
#include "amqpcpp/channelimpl.h"
#include "amqpcpp/channel.h"
#include "amqpcpp/login.h"

66
include/amqpcpp/callbacks.h
View File

@ -3,7 +3,7 @@
*
* Class storing deferred callbacks of different type.
*
* @copyright 2014 - 2017 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
/**
@ -29,25 +29,53 @@ class Message;
class MetaData;
/**
* All the callbacks that are supported
*
* When someone registers a callback function for certain events, it should
* match one of the following signatures.
* Generic callbacks that are used by many deferred objects
*/
using SuccessCallback = std::function<void()>;
using ErrorCallback = std::function<void(const char *message)>;
using FinalizeCallback = std::function<void()>;
using EmptyCallback = std::function<void()>;
using BeginCallback = std::function<void()>;
using HeaderCallback = std::function<void(const MetaData &metaData)>;
using DataCallback = std::function<void(const char *data, size_t size)>;
using MessageCallback = std::function<void(const Message &message, uint64_t deliveryTag, bool redelivered)>;
using CompleteCallback = std::function<void(uint64_t deliveryTag, bool redelivered)>;
using QueueCallback = std::function<void(const std::string &name, uint32_t messagecount, uint32_t consumercount)>;
using DeleteCallback = std::function<void(uint32_t deletedmessages)>;
using SizeCallback = std::function<void(uint32_t messagecount)>;
using ConsumeCallback = std::function<void(const std::string &consumer)>;
using CancelCallback = std::function<void(const std::string &consumer)>;
using SuccessCallback = std::function<void()>;
using ErrorCallback = std::function<void(const char *message)>;
using FinalizeCallback = std::function<void()>;
/**
* Declaring and deleting a queue
*/
using QueueCallback = std::function<void(const std::string &name, uint32_t messagecount, uint32_t consumercount)>;
using DeleteCallback = std::function<void(uint32_t deletedmessages)>;
/**
* When retrieving the size of a queue in some way
*/
using EmptyCallback = std::function<void()>;
using SizeCallback = std::function<void(uint32_t messagecount)>;
/**
* Starting and stopping a consumer
*/
using ConsumeCallback = std::function<void(const std::string &consumer)>;
using CancelCallback = std::function<void(const std::string &consumer)>;
/**
* Receiving messages, either via consume(), get() or as returned messages
* The following methods receive the returned message in multiple parts
*/
using StartCallback = std::function<void(const std::string &exchange, const std::string &routingkey)>;
using HeaderCallback = std::function<void(const MetaData &metaData)>;
using DataCallback = std::function<void(const char *data, size_t size)>;
using DeliveredCallback = std::function<void(uint64_t deliveryTag, bool redelivered)>;
/**
* For returned messages amqp-cpp first calls a return-callback before the start,
* header and data callbacks are called. Instead of the deliver-callback, a
* returned-callback is called.
*/
using ReturnCallback = std::function<void(int16_t code, const std::string &message)>;
using ReturnedCallback = std::function<void()>;
/**
* If you do not want to merge all data into a single string, you can als
* implement callbacks that return the collected message.
*/
using MessageCallback = std::function<void(const Message &message, uint64_t deliveryTag, bool redelivered)>;
using BounceCallback = std::function<void(const Message &message, int16_t code, const std::string &description)>;
/**
* End namespace

35
include/amqpcpp/channel.h
View File

@ -341,17 +341,42 @@ public:
/**
* Publish a message to an exchange
*
*
* You have to supply the name of an exchange and a routing key. RabbitMQ will then try
* to send the message to one or more queues. With the optional flags parameter you can
* specify what should happen if the message could not be routed to a queue. By default,
* unroutable message are silently discarded.
*
* This method returns a reference to a DeferredPublisher object. You can use this returned
* object to install callbacks that are called when an undeliverable message is returned, or
* to set the callback that is called when the server confirms that the message was received.
*
* To enable handling returned messages, or to enable publisher-confirms, you must not only
* set the callback, but also pass in appropriate flags to enable this feature. If you do not
* pass in these flags, your callbacks will not be called. If you are not at all interested
* in returned messages or publish-confirms, you can ignore the flag and the returned object.
*
* Watch out: the channel returns _the same_ DeferredPublisher object for all calls to the
* publish() method. This means that the callbacks that you install for the first published
* message are also used for subsequent messages _and_ it means that if you install a different
* callback for a later publish operation, it overwrites your earlier callbacks
*
* The following flags can be supplied:
*
* - mandatory If set, server returns messages that are not sent to a queue
* - immediate If set, server returns messages that can not immediately be forwarded to a consumer.
*
* @param exchange the exchange to publish to
* @param routingkey the routing key
* @param envelope the full envelope to send
* @param message the message to send
* @param size size of the message
* @param flags optional flags
*/
bool publish(const std::string &exchange, const std::string &routingKey, const Envelope &envelope) { return _implementation->publish(exchange, routingKey, envelope); }
bool publish(const std::string &exchange, const std::string &routingKey, const std::string &message) { return _implementation->publish(exchange, routingKey, Envelope(message.data(), message.size())); }
bool publish(const std::string &exchange, const std::string &routingKey, const char *message, size_t size) { return _implementation->publish(exchange, routingKey, Envelope(message, size)); }
bool publish(const std::string &exchange, const std::string &routingKey, const char *message) { return _implementation->publish(exchange, routingKey, Envelope(message, strlen(message))); }
DeferredPublisher &publish(const std::string &exchange, const std::string &routingKey, const Envelope &envelope, int flags = 0) { return _implementation->publish(exchange, routingKey, envelope, flags); }
DeferredPublisher &publish(const std::string &exchange, const std::string &routingKey, const std::string &message, int flags = 0) { return _implementation->publish(exchange, routingKey, Envelope(message.data(), message.size()), flags); }
DeferredPublisher &publish(const std::string &exchange, const std::string &routingKey, const char *message, size_t size, int flags = 0) { return _implementation->publish(exchange, routingKey, Envelope(message, size), flags); }
DeferredPublisher &publish(const std::string &exchange, const std::string &routingKey, const char *message, int flags = 0) { return _implementation->publish(exchange, routingKey, Envelope(message, strlen(message)), flags); }
/**
* Set the Quality of Service (QOS) for this channel

65
include/amqpcpp/channelimpl.h
View File

@ -34,7 +34,7 @@ namespace AMQP {
/**
* Forward declarations
*/
class DeferredConsumerBase;
class DeferredReceiver;
class BasicDeliverFrame;
class DeferredConsumer;
class BasicGetOKFrame;
@ -44,6 +44,7 @@ class DeferredDelete;
class DeferredCancel;
class DeferredQueue;
class DeferredGet;
class DeferredPublisher;
class Connection;
class Envelope;
class Table;
@ -74,10 +75,16 @@ private:
ErrorCallback _errorCallback;
/**
* Handlers for all consumers that are active
* @var std::map<std::string,std::shared_ptr<DeferredConsumerBase>
* Handler that deals with incoming messages as a result of publish operations
* @var std::shared_ptr<DeferredPublisher>
*/
std::map<std::string,std::shared_ptr<DeferredConsumerBase>> _consumers;
std::shared_ptr<DeferredPublisher> _publisher;
/**
* Handlers for all consumers that are active
* @var std::map<std::string,std::shared_ptr<DeferredConsumer>
*/
std::map<std::string,std::shared_ptr<DeferredConsumer>> _consumers;
/**
* Pointer to the oldest deferred result (the first one that is going
@ -129,10 +136,10 @@ private:
bool _synchronous = false;
/**
* The current consumer receiving a message
* @var std::shared_ptr<DeferredConsumerBase>
* The current object that is busy receiving a message
* @var std::shared_ptr<DeferredReceiver>
*/
std::shared_ptr<DeferredConsumerBase> _consumer;
std::shared_ptr<DeferredReceiver> _receiver;
/**
* Attach the connection
@ -396,16 +403,17 @@ public:
* Publish a message to an exchange
*
* If the mandatory or immediate flag is set, and the message could not immediately
* be published, the message will be returned to the client. However, the AMQP-CPP
* library does not yet report such returned messages.
* be published, the message will be returned to the client.
*
* @param exchange the exchange to publish to
* @param routingkey the routing key
* @param envelope the full envelope to send
* @param message the message to send
* @param size size of the message
* @param flags optional flags
* @return DeferredPublisher
*/
bool publish(const std::string &exchange, const std::string &routingKey, const Envelope &envelope);
DeferredPublisher &publish(const std::string &exchange, const std::string &routingKey, const Envelope &envelope, int flags);
/**
* Set the Quality of Service (QOS) of the entire connection
@ -659,18 +667,23 @@ public:
/**
* Install a consumer
*
* @param consumertag The consumer tag
* @param consumer The consumer handler
* @param active Is this the new active consumer
* @param consumer The consumer object
*/
void install(std::string consumertag, const std::shared_ptr<DeferredConsumerBase> &consumer, bool active = false)
void install(const std::string &consumertag, const std::shared_ptr<DeferredConsumer> &consumer)
{
// install the consumer handler
_consumers[consumertag] = consumer;
}
// should we become the current consumer?
if (active) _consumer = consumer;
/**
* Install the current consumer
* @param receiver The receiver object
*/
void install(const std::shared_ptr<DeferredReceiver> &receiver)
{
// store object as current receiver
_receiver = receiver;
}
/**
@ -684,23 +697,23 @@ public:
}
/**
* Process incoming delivery
*
* @param frame The frame to process
* Fetch the receiver for a specific consumer tag
* @param consumertag the consumer tag
* @return the receiver object
*/
void process(BasicDeliverFrame &frame);
DeferredConsumer *consumer(const std::string &consumertag) const;
/**
* Retrieve the current consumer handler
*
* Retrieve the current object that is receiving a message
* @return The handler responsible for the current message
*/
DeferredConsumerBase *consumer();
DeferredReceiver *receiver() const { return _receiver.get(); }
/**
* Mark the current consumer as done
* Retrieve the deferred publisher that handles returned messages
* @return The deferred publisher object
*/
void complete();
DeferredPublisher *publisher() const { return _publisher.get(); }
/**
* The channel class is its friend, thus can it instantiate this object

86
include/amqpcpp/deferredconsumer.h
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@ -3,7 +3,7 @@
*
* Deferred callback for consumers
*
* @copyright 2014 - 2017 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
/**
@ -14,17 +14,22 @@
/**
* Dependencies
*/
#include "deferredconsumerbase.h"
#include "deferredextreceiver.h"
/**
* Set up namespace
*/
namespace AMQP {
/**
* Forward declararions
*/
class BasicDeliverFrame;
/**
* We extend from the default deferred and add extra functionality
*/
class DeferredConsumer : public DeferredConsumerBase
class DeferredConsumer : public DeferredExtReceiver, public std::enable_shared_from_this<DeferredConsumer>
{
private:
/**
@ -33,6 +38,13 @@ private:
*/
ConsumeCallback _consumeCallback;
/**
* Process a delivery frame
*
* @param frame The frame to process
*/
void process(BasicDeliverFrame &frame);
/**
* Report success for frames that report start consumer operations
* @param name Consumer tag that is started
@ -41,12 +53,10 @@ private:
virtual const std::shared_ptr<Deferred> &reportSuccess(const std::string &name) override;
/**
* Announce that a message has been received
* @param message The message to announce
* @param deliveryTag The delivery tag (for ack()ing)
* @param redelivered Is this a redelivered message
* Get reference to self to prevent that object falls out of scope
* @return std::shared_ptr
*/
virtual void announce(const Message &message, uint64_t deliveryTag, bool redelivered) const override;
virtual std::shared_ptr<DeferredReceiver> lock() override { return shared_from_this(); }
/**
* The channel implementation may call our
@ -54,11 +64,11 @@ private:
*/
friend class ChannelImpl;
friend class ConsumedMessage;
friend class BasicDeliverFrame;
public:
/**
* Protected constructor that can only be called
* from within the channel implementation
* Constructor that should only be called from within the channel implementation
*
* Note: this constructor _should_ be protected, but because make_shared
* will then not work, we have decided to make it public after all,
@ -68,7 +78,7 @@ public:
* @param failed are we already failed?
*/
DeferredConsumer(ChannelImpl *channel, bool failed = false) :
DeferredConsumerBase(failed, channel) {}
DeferredExtReceiver(failed, channel) {}
public:
/**
@ -156,15 +166,46 @@ public:
* @param callback The callback to invoke
* @return Same object for chaining
*/
DeferredConsumer &onBegin(const BeginCallback &callback)
DeferredConsumer &onBegin(const StartCallback &callback)
{
// store callback
_beginCallback = callback;
_startCallback = callback;
// allow chaining
return *this;
}
/**
* Register the function that is called when the start frame of a new
* consumed message is received
*
* @param callback The callback to invoke
* @return Same object for chaining
*/
DeferredConsumer &onStart(const StartCallback &callback)
{
// store callback
_startCallback = callback;
// allow chaining
return *this;
}
/**
* Register a function that is called when the message size is known
*
* @param callback The callback to invoke for message headers
* @return Same object for chaining
*/
DeferredConsumer &onSize(const SizeCallback &callback)
{
// store callback
_sizeCallback = callback;
// allow chaining
return *this;
}
/**
* Register the function that is called when message headers come in
*
@ -208,10 +249,25 @@ public:
* @param callback The callback to invoke
* @return Same object for chaining
*/
DeferredConsumer &onComplete(const CompleteCallback &callback)
DeferredConsumer &onComplete(const DeliveredCallback &callback)
{
// store callback
_completeCallback = callback;
_deliveredCallback = callback;
// allow chaining
return *this;
}
/**
* Register a funtion to be called when a message was completely received
*
* @param callback The callback to invoke
* @return Same object for chaining
*/
DeferredConsumer &onDelivered(const DeliveredCallback &callback)
{
// store callback
_deliveredCallback = callback;
// allow chaining
return *this;

91
include/amqpcpp/deferredextreceiver.h Normal file
View File

@ -0,0 +1,91 @@
/**
* DeferredExtReceiver.h
*
* Extended receiver that _wants_ to receive message (because it is
* consuming or get'ting messages. This is the base class for both
* the DeferredConsumer as well as the DeferredGet classes, but not
* the base of the DeferredPublisher (which can also receive returned
* messages, but not as a result of an explicit request)
*
* @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
* @copyright 2018 Copernica BV
*/
/**
* Include guard
*/
#pragma once
/**
* Dependencies
*/
#include "deferredreceiver.h"
/**
* Begin of namespace
*/
namespace AMQP {
/**
* Class definition
*/
class DeferredExtReceiver : public DeferredReceiver
{
protected:
/**
* The delivery tag for the current message
* @var uint64_t
*/
uint64_t _deliveryTag = 0;
/**
* Is this a redelivered message
* @var bool
*/
bool _redelivered = false;
/**
* Callback for incoming messages
* @var MessageCallback
*/
MessageCallback _messageCallback;
/**
* Callback for when a message was complete finished
* @var DeliveredCallback
*/
DeliveredCallback _deliveredCallback;
/**
* Initialize the object to send out a message
* @param exchange the exchange to which the message was published
* @param routingkey the routing key that was used to publish the message
*/
virtual void initialize(const std::string &exchange, const std::string &routingkey) override;
/**
* Indicate that a message was done
*/
virtual void complete() override;
/**
* Constructor
* @param failed Have we already failed?
* @param channel The channel we are consuming on
*/
DeferredExtReceiver(bool failed, ChannelImpl *channel) :
DeferredReceiver(failed, channel) {}
public:
/**
* Destructor
*/
virtual ~DeferredExtReceiver() = default;
};
/**
* End of namespace
*/
}

178
include/amqpcpp/deferredget.h
View File

@ -2,7 +2,7 @@
* DeferredGet.h
*
* @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
* @copyright 2014 - 2017 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
/**
@ -13,7 +13,7 @@
/**
* Dependencies
*/
#include "deferredconsumerbase.h"
#include "deferredextreceiver.h"
/**
* Set up namespace
@ -27,7 +27,7 @@ namespace AMQP {
* it grabs a self-pointer when the callback is running, otherwise the onFinalize()
* is called before the actual message is consumed.
*/
class DeferredGet : public DeferredConsumerBase
class DeferredGet : public DeferredExtReceiver, public std::enable_shared_from_this<DeferredGet>
{
private:
/**
@ -40,7 +40,7 @@ private:
* Callback with the number of messages still in the queue
* @var SizeCallback
*/
SizeCallback _sizeCallback;
SizeCallback _countCallback;
/**
* Report success for a get operation
@ -57,12 +57,15 @@ private:
virtual const std::shared_ptr<Deferred> &reportSuccess() const override;
/**
* Announce that a message has been received
* @param message The message to announce
* @param deliveryTag The delivery tag (for ack()ing)
* @param redelivered Is this a redelivered message
* Get reference to self to prevent that object falls out of scope
* @return std::shared_ptr
*/
virtual void announce(const Message &message, uint64_t deliveryTag, bool redelivered) const override;
virtual std::shared_ptr<DeferredReceiver> lock() override { return shared_from_this(); }
/**
* Extended implementation of the complete method that is called when a message was fully received
*/
virtual void complete() override;
/**
* The channel implementation may call our
@ -84,61 +87,9 @@ public:
* @param failed are we already failed?
*/
DeferredGet(ChannelImpl *channel, bool failed = false) :
DeferredConsumerBase(failed, channel) {}
DeferredExtReceiver(failed, channel) {}
public:
/**
* Register the function to be called when a new message is expected
*
* @param callback The callback to invoke
* @return Same object for chaining
*/
DeferredGet &onBegin(const BeginCallback &callback)
{
// store callback
_beginCallback = callback;
// allow chaining
return *this;
}
/**
* Register the function to be called when message headers come in
*
* @param callback The callback to invoke for message headers
* @return Same object for chaining
*/
DeferredGet &onHeaders(const HeaderCallback &callback)
{
// store callback
_headerCallback = callback;
// allow chaining
return *this;
}
/**
* Register the function to be called when a chunk of data comes in
*
* Note that this function may be called zero, one or multiple times
* for each incoming message depending on the size of the message data.
*
* If you install this callback you very likely also want to install
* the onComplete callback so you know when the last data part was
* received.
*
* @param callback The callback to invoke for chunks of message data
* @return Same object for chaining
*/
DeferredGet &onData(const DataCallback &callback)
{
// store callback
_dataCallback = callback;
// allow chaining
return *this;
}
/**
* Register a function to be called when a message arrives
* This fuction is also available as onReceived() and onMessage() because I always forget which name I gave to it
@ -195,13 +146,95 @@ public:
}
/**
* Register a function to be called when size information is known
* Register a function to be called when queue size information is known
* @param callback the callback to execute
*/
DeferredGet &onCount(const SizeCallback &callback)
{
// store callback
_countCallback = callback;
// allow chaining
return *this;
}
/**
* Register the function to be called when a new message is expected
*
* @param callback The callback to invoke
* @return Same object for chaining
*/
DeferredGet &onBegin(const StartCallback &callback)
{
// store callback
_startCallback = callback;
// allow chaining
return *this;
}
/**
* Register the function to be called when a new message is expected
*
* @param callback The callback to invoke
* @return Same object for chaining
*/
DeferredGet &onStart(const StartCallback &callback)
{
// store callback
_startCallback = callback;
// allow chaining
return *this;
}
/**
* Register a function that is called when the message size is known
*
* @param callback The callback to invoke for message headers
* @return Same object for chaining
*/
DeferredGet &onSize(const SizeCallback &callback)
{
// store callback
_sizeCallback = callback;
// allow chaining
return *this;
}
/**
* Register the function to be called when message headers come in
*
* @param callback The callback to invoke for message headers
* @return Same object for chaining
*/
DeferredGet &onHeaders(const HeaderCallback &callback)
{
// store callback
_headerCallback = callback;
// allow chaining
return *this;
}
/**
* Register the function to be called when a chunk of data comes in
*
* Note that this function may be called zero, one or multiple times
* for each incoming message depending on the size of the message data.
*
* If you install this callback you very likely also want to install
* the onComplete callback so you know when the last data part was
* received.
*
* @param callback The callback to invoke for chunks of message data
* @return Same object for chaining
*/
DeferredGet &onData(const DataCallback &callback)
{
// store callback
_dataCallback = callback;
// allow chaining
return *this;
@ -213,10 +246,25 @@ public:
* @param callback The callback to invoke
* @return Same object for chaining
*/
DeferredGet &onComplete(const CompleteCallback &callback)
DeferredGet &onComplete(const DeliveredCallback &callback)
{
// store callback
_completeCallback = callback;
_deliveredCallback = callback;
// allow chaining
return *this;
}
/**
* Register a funtion to be called when a message was completely received
*
* @param callback The callback to invoke
* @return Same object for chaining
*/
DeferredGet &onDelivered(const DeliveredCallback &callback)
{
// store callback
_deliveredCallback = callback;
// allow chaining
return *this;

241
include/amqpcpp/deferredpublisher.h Normal file
View File

@ -0,0 +1,241 @@
/**
* DeferredPublisher.h
*
* Class that is returned when channel::publish() is called, and that
* can be used to install callback methods that define how returned
* messages should be handled.
*
* @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
* @copyright 2018 Copernica BV
*/
/**
* Include guard
*/
#pragma once
/**
* Begin of namespace
*/
namespace AMQP {
/**
* Forward declarations
*/
class ChannelImpl;
/**
* Class definition
*/
class DeferredPublisher : public DeferredReceiver, public std::enable_shared_from_this<DeferredPublisher>
{
private:
/**
* The error code
* @var int16_t
*/
int16_t _code = 0;
/**
* The error message
* @var std::string
*/
std::string _description;
/**
* Callback that is called when a message is returned
* @var BounceCallback
*/
BounceCallback _bounceCallback;
/**
* Begin of a bounced message
* @var ReturnCallback
*/
ReturnCallback _beginCallback;
/**
* End of a bounced message
* @var ReturnedCallback
*/
ReturnedCallback _completeCallback;
/**
* Process a return frame
*
* @param frame The frame to process
*/
void process(BasicReturnFrame &frame);
/**
* Get reference to self to prevent that object falls out of scope
* @return std::shared_ptr
*/
virtual std::shared_ptr<DeferredReceiver> lock() override { return shared_from_this(); }
/**
* Extended implementation of the complete method that is called when a message was fully received
*/
virtual void complete() override;
/**
* Classes that can access private members
*/
friend class BasicReturnFrame;
public:
/**
* Constructor that should only be called from within the channel implementation
*
* Note: this constructor _should_ be protected, but because make_shared
* will then not work, we have decided to make it public after all,
* because the work-around would result in not-so-easy-to-read code.
*
* @param channel the channel implementation
* @param failed are we already failed?
*/
DeferredPublisher(ChannelImpl *channel, bool failed = false) :
DeferredReceiver(failed, channel) {}
public:
/**
* Register a function to be called when a full message is returned
* @param callback the callback to execute
*/
DeferredPublisher &onReceived(const BounceCallback &callback)
{
// store callback
_bounceCallback = callback;
// allow chaining
return *this;
}
/**
* Alias for onReceived() (see above)
* @param callback the callback to execute
*/
DeferredPublisher &onMessage(const BounceCallback &callback)
{
// store callback
_bounceCallback = callback;
// allow chaining
return *this;
}
/**
* Alias for onReceived() (see above)
* @param callback the callback to execute
*/
DeferredPublisher &onReturned(const BounceCallback &callback)
{
// store callback
_bounceCallback = callback;
// allow chaining
return *this;
}
/**
* Alias for onReceived() (see above)
* @param callback the callback to execute
*/
DeferredPublisher &onBounced(const BounceCallback &callback)
{
// store callback
_bounceCallback = callback;
// allow chaining
return *this;
}
/**
* Register the function that is called when the start frame of a new
* consumed message is received
*
* @param callback The callback to invoke
* @return Same object for chaining
*/
DeferredPublisher &onBegin(const ReturnCallback &callback)
{
// store callback
_beginCallback = callback;
// allow chaining
return *this;
}
/**
* Register a function that is called when the message size is known
*
* @param callback The callback to invoke for message headers
* @return Same object for chaining
*/
DeferredPublisher &onSize(const SizeCallback &callback)
{
// store callback
_sizeCallback = callback;
// allow chaining
return *this;
}
/**
* Register the function that is called when message headers come in
*
* @param callback The callback to invoke for message headers
* @return Same object for chaining
*/
DeferredPublisher &onHeaders(const HeaderCallback &callback)
{
// store callback
_headerCallback = callback;
// allow chaining
return *this;
}
/**
* Register the function to be called when a chunk of data comes in
*
* Note that this function may be called zero, one or multiple times
* for each incoming message depending on the size of the message data.
*
* If you install this callback you very likely also want to install
* the onComplete callback so you know when the last data part was
* received.
*
* @param callback The callback to invoke for chunks of message data
* @return Same object for chaining
*/
DeferredPublisher &onData(const DataCallback &callback)
{
// store callback
_dataCallback = callback;
// allow chaining
return *this;
}
/**
* Register a funtion to be called when a message was completely received
*
* @param callback The callback to invoke
* @return Same object for chaining
*/
DeferredPublisher &onComplete(const ReturnedCallback &callback)
{
// store callback
_completeCallback = callback;
// allow chaining
return *this;
}
};
/**
* End of namespace
*/
}

97
include/amqpcpp/deferredconsumerbase.h → include/amqpcpp/deferredreceiver.h
View File

@ -1,10 +1,10 @@
/**
* deferredconsumerbase.h
* DeferredReceiver.h
*
* Base class for the deferred consumer and the
* deferred get.
* Base class for the deferred consumer, the deferred get and the
* deferred publisher (that may receive returned messages)
*
* @copyright 2016 - 2017 Copernica B.V.
* @copyright 2016 - 2018 Copernica B.V.
*/
/**
@ -35,9 +35,7 @@ class BodyFrame;
/**
* Base class for deferred consumers
*/
class DeferredConsumerBase :
public Deferred,
public std::enable_shared_from_this<DeferredConsumerBase>
class DeferredReceiver : public Deferred
{
private:
/**
@ -46,20 +44,27 @@ private:
*/
uint64_t _bodySize = 0;
/**
* Process a delivery frame
*
* @param frame The frame to process
*/
void process(BasicDeliverFrame &frame);
protected:
/**
* Process a delivery frame from a get request
*
* @param frame The frame to process
* Initialize the object to send out a message
* @param exchange the exchange to which the message was published
* @param routingkey the routing key that was used to publish the message
*/
void process(BasicGetOKFrame &frame);
virtual void initialize(const std::string &exchange, const std::string &routingkey);
/**
* Get reference to self to prevent that object falls out of scope
* @return std::shared_ptr
*/
virtual std::shared_ptr<DeferredReceiver> lock() = 0;
/**
* Indicate that a message was done
*/
virtual void complete() = 0;
private:
/**
* Process the message headers
*
@ -74,40 +79,15 @@ private:
*/
void process(BodyFrame &frame);
/**
* Indicate that a message was done
*/
void complete();
/**
* Announce that a message has been received
* @param message The message to announce
* @param deliveryTag The delivery tag (for ack()ing)
* @param redelivered Is this a redelivered message
*/
virtual void announce(const Message &message, uint64_t deliveryTag, bool redelivered) const = 0;
/**
* Frames may be processed
*/
friend class ChannelImpl;
friend class BasicDeliverFrame;
friend class BasicGetOKFrame;
friend class BasicHeaderFrame;
friend class BodyFrame;
protected:
/**
* The delivery tag for the current message
* @var uint64_t
*/
uint64_t _deliveryTag = 0;
/**
* Is this a redelivered message
* @var bool
*/
bool _redelivered = false;
/**
* The channel to which the consumer is linked
* @var ChannelImpl
@ -116,9 +96,15 @@ protected:
/**
* Callback for new message
* @var BeginCallback
* @var StartCallback
*/
BeginCallback _beginCallback;
StartCallback _startCallback;
/**
* Callback that is called when size of the message is known
* @var SizeCallback
*/
SizeCallback _sizeCallback;
/**
* Callback for incoming headers
@ -132,18 +118,6 @@ protected:
*/
DataCallback _dataCallback;
/**
* Callback for incoming messages
* @var MessageCallback
*/
MessageCallback _messageCallback;
/**
* Callback for when a message was complete finished
* @var CompleteCallback
*/
CompleteCallback _completeCallback;
/**
* The message that we are currently receiving
* @var stack_ptr<Message>
@ -152,12 +126,17 @@ protected:
/**
* Constructor
*
* @param failed Have we already failed?
* @param channel The channel we are consuming on
*/
DeferredConsumerBase(bool failed, ChannelImpl *channel) : Deferred(failed), _channel(channel) {}
DeferredReceiver(bool failed, ChannelImpl *channel) :
Deferred(failed), _channel(channel) {}
public:
/**
* Destructor
*/
virtual ~DeferredReceiver() = default;
};
/**

6
include/amqpcpp/message.h
View File

@ -7,7 +7,7 @@
* Message objects can not be constructed by end users, they are only constructed
* by the AMQP library, and passed to user callbacks.
*
* @copyright 2014 - 2017 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
/**
@ -31,7 +31,7 @@ namespace AMQP {
/**
* Forward declarations
*/
class DeferredConsumerBase;
class DeferredReceiver;
/**
* Class definition
@ -61,7 +61,7 @@ protected:
/**
* We are an open book to the consumer handler
*/
friend class DeferredConsumerBase;
friend class DeferredReceiver;
/**
* Set the body size

4
src/CMakeLists.txt
View File

@ -44,7 +44,9 @@ add_sources(
consumedmessage.h
deferredcancel.cpp
deferredconsumer.cpp
deferredconsumerbase.cpp
deferredreceiver.cpp
deferredextreceiver.cpp
deferredpublisher.cpp
deferredget.cpp
exchangebindframe.h
exchangebindokframe.h

13
src/basicdeliverframe.h
View File

@ -1,7 +1,7 @@
/**
* Class describing a basic deliver frame
*
* @copyright 2014 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
/**
@ -16,6 +16,7 @@
#include "amqpcpp/stringfield.h"
#include "amqpcpp/booleanset.h"
#include "amqpcpp/connectionimpl.h"
#include "amqpcpp/deferredconsumer.h"
/**
* Set up namespace
@ -193,8 +194,14 @@ public:
// channel does not exist
if (!channel) return false;
// construct the message
channel->process(*this);
// get the appropriate consumer object
auto consumer = channel->consumer(_consumerTag);
// skip if there was no consumer for this tag
if (consumer == nullptr) return false;
// initialize the object, because we're about to receive a message
consumer->process(*this);
// done
return true;

17
src/basicgetokframe.h
View File

@ -1,7 +1,7 @@
/**
* Class describing a basic get ok frame
*
* @copyright 2014 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
/**
@ -170,14 +170,17 @@ public:
// channel does not exist
if (!channel) return false;
// report success for the get operation
channel->reportSuccess(messageCount(), deliveryTag(), redelivered());
// report success for the get operation (this will also update the current receiver!)
channel->reportSuccess(messageCount(), _deliveryTag, redelivered());
// check if we have a valid consumer
if (!channel->consumer()) return false;
// get the current receiver object
auto *receiver = channel->receiver();
// pass on to consumer
channel->consumer()->process(*this);
// check if we have a valid receiver
if (receiver == nullptr) return false;
// initialize the receiver for the upcoming message
receiver->initialize(_exchange, _routingKey);
// done
return true;

14
src/basicheaderframe.h
View File

@ -1,7 +1,7 @@
/**
* Class describing an AMQP basic header frame
*
* @copyright 2014 - 2017 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
/**
@ -16,7 +16,7 @@
#include "amqpcpp/metadata.h"
#include "amqpcpp/envelope.h"
#include "amqpcpp/connectionimpl.h"
#include "amqpcpp/deferredconsumerbase.h"
#include "amqpcpp/deferredreceiver.h"
/**
* Set up namespace
@ -134,12 +134,18 @@ public:
{
// we need the appropriate channel
auto channel = connection->channel(this->channel());
// we need a channel
if (channel == nullptr) return false;
// do we have an object that is receiving this data?
auto *receiver = channel->receiver();
// check if we have a valid channel and consumer
if (!channel || !channel->consumer()) return false;
if (receiver == nullptr) return false;
// the channel can process the frame
channel->consumer()->process(*this);
receiver->process(*this);
// done
return true;

21
src/basicreturnframe.h
View File

@ -1,7 +1,7 @@
/**
* Class describing a basic return frame
*
* @copyright 2014 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
/**
@ -155,8 +155,23 @@ public:
*/
virtual bool process(ConnectionImpl *connection) override
{
// we no longer support returned messages
return false;
// we need the appropriate channel
auto channel = connection->channel(this->channel());
// channel does not exist
if (!channel) return false;
// get the current publisher
auto publisher = channel->publisher();
// if there is no deferred publisher, we can just as well stop
if (publisher == nullptr) return false;
// initialize the object, because we're about to receive a message
publisher->process(*this);
// done
return true;
}
};

16
src/bodyframe.h
View File

@ -1,7 +1,7 @@
/**
* Class describing an AMQP Body Frame
*
* @copyright 2014 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
/**
@ -14,7 +14,7 @@
*/
#include "extframe.h"
#include "amqpcpp/connectionimpl.h"
#include "amqpcpp/deferredconsumerbase.h"
#include "amqpcpp/deferredreceiver.h"
/**
* Set up namespace
@ -105,12 +105,18 @@ public:
{
// we need the appropriate channel
auto channel = connection->channel(this->channel());
// we must have a channel object
if (channel == nullptr) return false;
// get the object that is receiving the messages
auto *receiver = channel->receiver();
// check if we have a valid channel and consumer
if (!channel || !channel->consumer()) return false;
// check if we have a valid receiver
if (receiver == nullptr) return false;
// the consumer may process the frame
channel->consumer()->process(*this);
receiver->process(*this);
// done
return true;

64
src/channelimpl.cpp
View File

@ -6,7 +6,6 @@
* @copyright 2014 - 2018 Copernica BV
*/
#include "includes.h"
#include "basicdeliverframe.h"
#include "basicgetokframe.h"
#include "basicreturnframe.h"
#include "consumedmessage.h"
@ -452,26 +451,31 @@ DeferredDelete &ChannelImpl::removeQueue(const std::string &name, int flags)
* @param envelope the full envelope to send
* @param message the message to send
* @param size size of the message
* @param flags
* @return DeferredPublisher
*/
bool ChannelImpl::publish(const std::string &exchange, const std::string &routingKey, const Envelope &envelope)
DeferredPublisher &ChannelImpl::publish(const std::string &exchange, const std::string &routingKey, const Envelope &envelope, int flags)
{
// we are going to send out multiple frames, each one will trigger a call to the handler,
// which in turn could destruct the channel object, we need to monitor that
Monitor monitor(this);
// @todo do not copy the entire buffer to individual frames
// make sure we have a deferred object to return
if (!_publisher) _publisher.reset(new DeferredPublisher(this));
// send the publish frame
if (!send(BasicPublishFrame(_id, exchange, routingKey))) return false;
if (!send(BasicPublishFrame(_id, exchange, routingKey, (flags & mandatory) != 0, (flags & immediate) != 0))) return *_publisher;
// channel still valid?
if (!monitor.valid()) return false;
if (!monitor.valid()) return *_publisher;
// send header
if (!send(BasicHeaderFrame(_id, envelope))) return false;
if (!send(BasicHeaderFrame(_id, envelope))) return *_publisher;
// channel and connection still valid?
if (!monitor.valid() || !_connection) return false;
if (!monitor.valid() || !_connection) return *_publisher;
// the max payload size is the max frame size minus the bytes for headers and trailer
uint32_t maxpayload = _connection->maxPayload();
@ -488,10 +492,10 @@ bool ChannelImpl::publish(const std::string &exchange, const std::string &routin
uint64_t chunksize = std::min(static_cast<uint64_t>(maxpayload), bytesleft);
// send out a body frame
if (!send(BodyFrame(_id, data + bytessent, (uint32_t)chunksize))) return false;
if (!send(BodyFrame(_id, data + bytessent, (uint32_t)chunksize))) return *_publisher;
// channel still valid?
if (!monitor.valid()) return false;
if (!monitor.valid()) return *_publisher;
// update counters
bytessent += chunksize;
@ -499,7 +503,7 @@ bool ChannelImpl::publish(const std::string &exchange, const std::string &routin
}
// done
return true;
return *_publisher;
}
/**
@ -816,41 +820,17 @@ void ChannelImpl::reportError(const char *message, bool notifyhandler)
}
/**
* Process incoming delivery
*
* @param frame The frame to process
* Get the current receiver for a given consumer tag
* @param consumertag the consumer frame
* @return DeferredConsumer
*/
void ChannelImpl::process(BasicDeliverFrame &frame)
DeferredConsumer *ChannelImpl::consumer(const std::string &consumertag) const
{
// find the consumer for this frame
auto iter = _consumers.find(frame.consumerTag());
if (iter == _consumers.end()) return;
// we are going to be receiving a message, store
// the handler for the incoming message
_consumer = iter->second;
// let the consumer process the frame
_consumer->process(frame);
}
/**
* Retrieve the current consumer handler
*
* @return The handler responsible for the current message
*/
DeferredConsumerBase *ChannelImpl::consumer()
{
return _consumer.get();
}
/**
* Mark the current consumer as done
*/
void ChannelImpl::complete()
{
// no more consumer
_consumer.reset();
// look in the map
auto iter = _consumers.find(consumertag);
// return the result
return iter == _consumers.end() ? nullptr : iter->second.get();
}
/**

7
src/consumedmessage.h
View File

@ -1,9 +1,14 @@
/**
* Base class for a message implementation
*
* @copyright 2014 - 2017 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
/**
* Dependencies
*/
#include "basicdeliverframe.h"
/**
* Set up namespace
*/

33
src/deferredconsumer.cpp
View File

@ -3,15 +3,34 @@
*
* Implementation file for the DeferredConsumer class
*
* @copyright 2014 - 2017 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
#include "includes.h"
#include "basicdeliverframe.h"
/**
* Namespace
*/
namespace AMQP {
/**
* Process a delivery frame
*
* @param frame The frame to process
*/
void DeferredConsumer::process(BasicDeliverFrame &frame)
{
// this object will handle all future frames with header and body data
_channel->install(shared_from_this());
// retrieve the delivery tag and whether we were redelivered
_deliveryTag = frame.deliveryTag();
_redelivered = frame.redelivered();
// initialize the object for the next message
initialize(frame.exchange(), frame.routingKey());
}
/**
* Report success for frames that report start consumer operations
* @param name Consumer tag that is started
@ -32,18 +51,6 @@ const std::shared_ptr<Deferred> &DeferredConsumer::reportSuccess(const std::stri
return _next;
}
/**
* Announce that a message was received
* @param message The message to announce
* @param deliveryTag The delivery tag (for ack()ing)
* @param redelivered Is this a redelivered message
*/
void DeferredConsumer::announce(const Message &message, uint64_t deliveryTag, bool redelivered) const
{
// simply execute the message callback
_messageCallback(message, deliveryTag, redelivered);
}
/**
* End namespace
*/

142
src/deferredconsumerbase.cpp
View File

@ -1,142 +0,0 @@
/**
* deferredconsumerbase.cpp
*
* Base class for the deferred consumer and the
* deferred get.
*
* @copyright 2016 - 2017 Copernica B.V.
*/
/**
* Dependencies
*/
#include "amqpcpp/deferredconsumerbase.h"
#include "basicdeliverframe.h"
#include "basicgetokframe.h"
#include "basicheaderframe.h"
#include "bodyframe.h"
/**
* Start namespace
*/
namespace AMQP {
/**
* Process a delivery frame
*
* @param frame The frame to process
*/
void DeferredConsumerBase::process(BasicDeliverFrame &frame)
{
// retrieve the delivery tag and whether we were redelivered
_deliveryTag = frame.deliveryTag();
_redelivered = frame.redelivered();
// anybody interested in the new message?
if (_beginCallback) _beginCallback();
// do we have anybody interested in messages?
if (_messageCallback) _message.construct(frame.exchange(), frame.routingKey());
}
/**
* Process a delivery frame from a get request
*
* @param frame The frame to process
*/
void DeferredConsumerBase::process(BasicGetOKFrame &frame)
{
// retrieve the delivery tag and whether we were redelivered
_deliveryTag = frame.deliveryTag();
_redelivered = frame.redelivered();
// anybody interested in the new message?
if (_beginCallback) _beginCallback();
// do we have anybody interested in messages?
if (_messageCallback) _message.construct(frame.exchange(), frame.routingKey());
}
/**
* Process the message headers
*
* @param frame The frame to process
*/
void DeferredConsumerBase::process(BasicHeaderFrame &frame)
{
// store the body size
_bodySize = frame.bodySize();
// do we have a message?
if (_message)
{
// store the body size and metadata
_message->setBodySize(_bodySize);
_message->set(frame.metaData());
}
// anybody interested in the headers?
if (_headerCallback) _headerCallback(frame.metaData());
// no body data expected? then we are now complete
if (!_bodySize) complete();
}
/**
* Process the message data
*
* @param frame The frame to process
*/
void DeferredConsumerBase::process(BodyFrame &frame)
{
// make sure we stay in scope
auto self = shared_from_this();
// update the bytes still to receive
_bodySize -= frame.payloadSize();
// anybody interested in the data?
if (_dataCallback) _dataCallback(frame.payload(), frame.payloadSize());
// do we have a message? then append the data
if (_message) _message->append(frame.payload(), frame.payloadSize());
// if all bytes were received we are now complete
if (!_bodySize) complete();
}
/**
* Indicate that a message was done
*/
void DeferredConsumerBase::complete()
{
// make sure we stay in scope
auto self = shared_from_this();
// also monitor the channel
Monitor monitor{ _channel };
// do we have a message?
if (_message)
{
// announce the message
announce(*_message, _deliveryTag, _redelivered);
// and destroy it
_message.reset();
}
// do we have to inform anyone about completion?
if (_completeCallback) _completeCallback(_deliveryTag, _redelivered);
// do we still have a valid channel
if (!monitor.valid()) return;
// we are now done executing
_channel->complete();
}
/**
* End namespace
*/
}

64
src/deferredextreceiver.cpp Normal file
View File

@ -0,0 +1,64 @@
/**
* DeferredExtReceiver.cpp
*
* Implementation file for the DeferredExtReceiver class
*
* @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
* @copyright 2018 Copernica BV
*/
/**
* Dependencies
*/
#include "amqpcpp/deferredextreceiver.h"
#include "amqpcpp/channelimpl.h"
/**
* Begin of namespace
*/
namespace AMQP {
/**
* Initialize the object to send out a message
* @param exchange the exchange to which the message was published
* @param routingkey the routing key that was used to publish the message
*/
void DeferredExtReceiver::initialize(const std::string &exchange, const std::string &routingkey)
{
// call base
DeferredReceiver::initialize(exchange, routingkey);
// do we have anybody interested in messages? in that case we construct the message
if (_messageCallback) _message.construct(exchange, routingkey);
}
/**
* Indicate that a message was done
*/
void DeferredExtReceiver::complete()
{
// also monitor the channel
Monitor monitor(_channel);
// do we have a message?
if (_message) _messageCallback(*_message, _deliveryTag, _redelivered);
// do we have to inform anyone about completion?
if (_deliveredCallback) _deliveredCallback(_deliveryTag, _redelivered);
// for the next iteration we want a new message
_message.reset();
// do we still have a valid channel
if (!monitor.valid()) return;
// we are now done executing, so the channel can forget the current receiving object
_channel->install(nullptr);
}
/**
* End of namespace
*/
}

37
src/deferredget.cpp
View File

@ -4,7 +4,7 @@
* Implementation of the DeferredGet call
*
* @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
* @copyright 2014 - 2017 Copernica BV
* @copyright 2014 - 2018 Copernica BV
*/
/**
@ -19,23 +19,22 @@ namespace AMQP {
/**
* Report success for a get operation
*
* @param messagecount Number of messages left in the queue
* @param deliveryTag Delivery tag of the message coming in
* @param redelivered Was the message redelivered?
*/
const std::shared_ptr<Deferred> &DeferredGet::reportSuccess(uint32_t messagecount, uint64_t deliveryTag, bool redelivered)
{
// install this object as the handler for the upcoming header and body frames
_channel->install(shared_from_this());
// store delivery tag and redelivery status
_deliveryTag = deliveryTag;
_redelivered = redelivered;
// install ourselves in the channel
_channel->install("", shared_from_this(), true);
// report the size (note that this is the size _minus_ the message that is retrieved
// (and for which the callback will be called later), so it could be zero)
if (_sizeCallback) _sizeCallback(messagecount);
if (_countCallback) _countCallback(messagecount);
// return next handler
return _next;
@ -48,7 +47,7 @@ const std::shared_ptr<Deferred> &DeferredGet::reportSuccess(uint32_t messagecoun
const std::shared_ptr<Deferred> &DeferredGet::reportSuccess() const
{
// report the size
if (_sizeCallback) _sizeCallback(0);
if (_countCallback) _countCallback(0);
// check if a callback was set
if (_emptyCallback) _emptyCallback();
@ -58,27 +57,15 @@ const std::shared_ptr<Deferred> &DeferredGet::reportSuccess() const
}
/**
* Announce that a message has been received
* @param message The message to announce
* @param deliveryTag The delivery tag (for ack()ing)
* @param redelivered Is this a redelivered message
* Extended implementation of the complete method that is called when a message was fully received
*/
void DeferredGet::announce(const Message &message, uint64_t deliveryTag, bool redelivered) const
void DeferredGet::complete()
{
// monitor the channel
Monitor monitor{ _channel };
// the channel is now synchronized
// the channel is now synchronized, delayed frames may now be sent
_channel->onSynchronized();
// simply execute the message callback
_messageCallback(std::move(message), deliveryTag, redelivered);
// check if the channel is still valid
if (!monitor.valid()) return;
// stop consuming now
_channel->uninstall({});
// pass on to normal implementation
DeferredExtReceiver::complete();
}
/**

72
src/deferredpublisher.cpp Normal file
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@ -0,0 +1,72 @@
/**
* DeferredPublisher.cpp
*
* Implementation file for the DeferredPublisher class
*
* @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
* @copyright 2018 Copernica BV
*/
#include "includes.h"
#include "basicreturnframe.h"
/**
* Begin of namespace
*/
namespace AMQP {
/**
* Process a return frame
*
* @param frame The frame to process
*/
void DeferredPublisher::process(BasicReturnFrame &frame)
{
// this object will handle all future frames with header and body data
_channel->install(shared_from_this());
// retrieve the delivery tag and whether we were redelivered
_code = frame.replyCode();
_description = frame.replyText();
// notify user space of the begin of the returned message
if (_beginCallback) _beginCallback(_code, _description);
// initialize the object for the next message
initialize(frame.exchange(), frame.routingKey());
// do we have anybody interested in messages? in that case we construct the message
if (_bounceCallback) _message.construct(frame.exchange(), frame.routingKey());
}
/**
* Indicate that a message was done
*/
void DeferredPublisher::complete()
{
// also monitor the channel
Monitor monitor(_channel);
// do we have a message?
if (_message) _bounceCallback(*_message, _code, _description);
// do we have to inform anyone about completion?
if (_completeCallback) _completeCallback();
// for the next iteration we want a new message
_message.reset();
// the description can be thrown away too
_description.clear();
// do we still have a valid channel
if (!monitor.valid()) return;
// we are now done executing, so the channel can forget the current receiving object
_channel->install(nullptr);
}
/**
* End of namespace
*/
}

91
src/deferredreceiver.cpp Normal file
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@ -0,0 +1,91 @@
/**
* DeferredReceiver.cpp
*
* Implementation file for the DeferredReceiver class
*
* @copyright 2016 - 2018 Copernica B.V.
*/
/**
* Dependencies
*/
#include "amqpcpp/deferredreceiver.h"
#include "basicdeliverframe.h"
#include "basicgetokframe.h"
#include "basicheaderframe.h"
#include "bodyframe.h"
/**
* Start namespace
*/
namespace AMQP {
/**
* Initialize the object: we are going to receive a message, next frames will be header and data
* @param exchange
* @param routingkey
*/
void DeferredReceiver::initialize(const std::string &exchange, const std::string &routingkey)
{
// anybody interested in the new message?
if (_startCallback) _startCallback(exchange, routingkey);
}
/**
* Process the message headers
*
* @param frame The frame to process
*/
void DeferredReceiver::process(BasicHeaderFrame &frame)
{
// make sure we stay in scope
auto self = lock();
// store the body size
_bodySize = frame.bodySize();
// is user interested in the size?
if (_sizeCallback) _sizeCallback(_bodySize);
// do we have a message?
if (_message)
{
// store the body size and metadata
_message->setBodySize(_bodySize);
_message->set(frame.metaData());
}
// anybody interested in the headers?
if (_headerCallback) _headerCallback(frame.metaData());
// no body data expected? then we are now complete
if (_bodySize == 0) complete();
}
/**
* Process the message data
*
* @param frame The frame to process
*/
void DeferredReceiver::process(BodyFrame &frame)
{
// make sure we stay in scope
auto self = lock();
// update the bytes still to receive
_bodySize -= frame.payloadSize();
// anybody interested in the data?
if (_dataCallback) _dataCallback(frame.payload(), frame.payloadSize());
// do we have a message? then append the data
if (_message) _message->append(frame.payload(), frame.payloadSize());
// if all bytes were received we are now complete
if (_bodySize == 0) complete();
}
/**
* End namespace
*/
}

1
src/includes.h
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@ -68,6 +68,7 @@
#include "amqpcpp/callbacks.h"
#include "amqpcpp/deferred.h"
#include "amqpcpp/deferredconsumer.h"
#include "amqpcpp/deferredpublisher.h"
#include "amqpcpp/deferredqueue.h"
#include "amqpcpp/deferreddelete.h"
#include "amqpcpp/deferredcancel.h"

2
tests/address.cpp
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@ -18,6 +18,7 @@
* @param argv
* @return int
*/
/*
int main(int argc, const char *argv[])
{
// iterate over the arguments
@ -37,3 +38,4 @@ int main(int argc, const char *argv[])
// done
return 0;
}
*/

21
tests/myconnection.cpp
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@ -30,7 +30,7 @@ MyConnection::MyConnection(const std::string &ip) :
_socket(Event::MainLoop::instance(), this)
{
// start connecting
if (_socket.connect(Network::Ipv4Address(ip), 5672)) return;
if (_socket.connect(Dns::IpAddress(ip), 5672)) return;
// failure
onFailure(&_socket);
@ -96,21 +96,30 @@ void MyConnection::onConnected(Network::TcpSocket *socket)
std::cout << "queue declared" << std::endl;
// start consuming
_channel->consume("my_queue").onReceived([](const AMQP::Message &message, uint64_t deliveryTag, bool redelivered) {
std::cout << "received: " << message.message() << std::endl;
_channel->consume("my_queue").onReceived([this](const AMQP::Message &message, uint64_t deliveryTag, bool redelivered) {
std::cout << "consumed from exchange " << message.exchange() << " " << message.routingkey() << ": " << std::string(message.body(), message.bodySize()) << std::endl;
_channel->ack(deliveryTag);
});
});
// declare an exchange
_channel->declareExchange().onSuccess([]() {
_channel->declareExchange("my_exchange", AMQP::direct).onSuccess([]() {
std::cout << "exchange declared" << std::endl;
});
// bind queue and exchange
_channel->bindQueue("my_exchange", "my_queue", "key").onSuccess([this]() {
std::cout << "queue bound to exchange" << std::endl;
// callback for returns
auto callback = [](const AMQP::Message &message, int16_t code, const std::string &description) {
_channel->publish("my_exchange", "key", "just a message");
std::cout << "message was returned: " << code << " " << description << ": " << std::string(message.body(), message.bodySize()) << std::endl;
};
_channel->publish("my_exchange", "key", "just a message", AMQP::mandatory).onReturned(callback);
_channel->publish("my_exchange", "unknown key", "just another message", AMQP::mandatory).onReturned(callback);
});
}
@ -156,7 +165,7 @@ void MyConnection::onData(Network::TcpSocket *socket, Network::Buffer *buffer)
if (!_connection) return;
// let the data be handled by the connection
size_t bytes = _connection->parse(buffer->data(), buffer->size());
size_t bytes = _connection->parse(buffer->buffer(), buffer->size());
// shrink the buffer
buffer->shrink(bytes);