/
queueMethods.go
244 lines (199 loc) · 6.14 KB
/
queueMethods.go
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package server
import (
"fmt"
"github.com/rabbitstack/fibratus/pkg/outputs/amqp/_fixtures/garagemq/amqp"
"github.com/rabbitstack/fibratus/pkg/outputs/amqp/_fixtures/garagemq/binding"
"github.com/rabbitstack/fibratus/pkg/outputs/amqp/_fixtures/garagemq/exchange"
"github.com/rabbitstack/fibratus/pkg/outputs/amqp/_fixtures/garagemq/queue"
)
func (channel *Channel) queueRoute(method amqp.Method) *amqp.Error {
switch method := method.(type) {
case *amqp.QueueDeclare:
return channel.queueDeclare(method)
case *amqp.QueueBind:
return channel.queueBind(method)
case *amqp.QueueUnbind:
return channel.queueUnbind(method)
case *amqp.QueuePurge:
return channel.queuePurge(method)
case *amqp.QueueDelete:
return channel.queueDelete(method)
}
return amqp.NewConnectionError(amqp.NotImplemented, "unable to route queue method "+method.Name(), method.ClassIdentifier(), method.MethodIdentifier())
}
func (channel *Channel) queueDeclare(method *amqp.QueueDeclare) *amqp.Error {
var existingQueue *queue.Queue
var notFoundErr, exclusiveErr *amqp.Error
if method.Queue == "" {
return amqp.NewChannelError(
amqp.CommandInvalid,
"queue name is required",
method.ClassIdentifier(),
method.MethodIdentifier(),
)
}
existingQueue, notFoundErr = channel.getQueueWithError(method.Queue, method)
exclusiveErr = channel.checkQueueLockWithError(existingQueue, method)
if method.Passive {
if method.NoWait {
return nil
}
if existingQueue == nil {
return notFoundErr
}
if exclusiveErr != nil {
return exclusiveErr
}
channel.SendMethod(&amqp.QueueDeclareOk{
Queue: method.Queue,
MessageCount: uint32(existingQueue.Length()),
ConsumerCount: uint32(existingQueue.ConsumersCount()),
})
return nil
}
newQueue := channel.conn.GetVirtualHost().NewQueue(
method.Queue,
channel.conn.id,
method.Exclusive,
method.AutoDelete,
method.Durable,
channel.server.config.Queue.ShardSize,
)
if existingQueue != nil {
if exclusiveErr != nil {
return exclusiveErr
}
if err := existingQueue.EqualWithErr(newQueue); err != nil {
return amqp.NewChannelError(
amqp.PreconditionFailed,
err.Error(),
method.ClassIdentifier(),
method.MethodIdentifier(),
)
}
channel.SendMethod(&amqp.QueueDeclareOk{
Queue: method.Queue,
MessageCount: uint32(existingQueue.Length()),
ConsumerCount: uint32(existingQueue.ConsumersCount()),
})
return nil
}
newQueue.Start()
err := channel.conn.GetVirtualHost().AppendQueue(newQueue)
if err != nil {
return amqp.NewChannelError(
amqp.PreconditionFailed,
err.Error(),
method.ClassIdentifier(),
method.MethodIdentifier(),
)
}
channel.SendMethod(&amqp.QueueDeclareOk{
Queue: method.Queue,
MessageCount: 0,
ConsumerCount: 0,
})
return nil
}
func (channel *Channel) queueBind(method *amqp.QueueBind) *amqp.Error {
var ex *exchange.Exchange
var qu *queue.Queue
var err *amqp.Error
if ex, err = channel.getExchangeWithError(method.Exchange, method); err != nil {
return err
}
// @spec-note
// The server MUST NOT allow clients to access the default exchange except by specifying an empty exchange name in the Queue.Bind and content Publish methods.
if ex.GetName() == exDefaultName {
return amqp.NewChannelError(
amqp.AccessRefused,
fmt.Sprintf("operation not permitted on the default exchange"),
method.ClassIdentifier(),
method.MethodIdentifier(),
)
}
if qu, err = channel.getQueueWithError(method.Queue, method); err != nil {
return err
}
if err = channel.checkQueueLockWithError(qu, method); err != nil {
return err
}
bind, bindErr := binding.NewBinding(method.Queue, method.Exchange,
method.RoutingKey, method.Arguments, ex.ExType() == exchange.ExTypeTopic)
if bindErr != nil {
return amqp.NewChannelError(
amqp.PreconditionFailed,
bindErr.Error(),
method.ClassIdentifier(),
method.MethodIdentifier(),
)
}
ex.AppendBinding(bind)
// @spec-note
// Bindings of durable queues to durable exchanges are automatically durable and the server MUST restore such bindings after a server restart.
if ex.IsDurable() && qu.IsDurable() {
channel.conn.GetVirtualHost().PersistBinding(bind)
}
if !method.NoWait {
channel.SendMethod(&amqp.QueueBindOk{})
}
return nil
}
func (channel *Channel) queueUnbind(method *amqp.QueueUnbind) *amqp.Error {
var ex *exchange.Exchange
var qu *queue.Queue
var err *amqp.Error
if ex, err = channel.getExchangeWithError(method.Exchange, method); err != nil {
return err
}
if qu, err = channel.getQueueWithError(method.Queue, method); err != nil {
return err
}
if err = channel.checkQueueLockWithError(qu, method); err != nil {
return err
}
bind, bindErr := binding.NewBinding(method.Queue, method.Exchange, method.RoutingKey, method.Arguments, ex.ExType() == exchange.ExTypeTopic)
if bindErr != nil {
return amqp.NewConnectionError(
amqp.PreconditionFailed,
bindErr.Error(),
method.ClassIdentifier(),
method.MethodIdentifier(),
)
}
ex.RemoveBinding(bind)
channel.conn.GetVirtualHost().RemoveBindings([]*binding.Binding{bind})
channel.SendMethod(&amqp.QueueUnbindOk{})
return nil
}
func (channel *Channel) queuePurge(method *amqp.QueuePurge) *amqp.Error {
var qu *queue.Queue
var err *amqp.Error
if qu, err = channel.getQueueWithError(method.Queue, method); err != nil {
return err
}
if err = channel.checkQueueLockWithError(qu, method); err != nil {
return err
}
msgCnt := qu.Purge()
if !method.NoWait {
channel.SendMethod(&amqp.QueuePurgeOk{MessageCount: uint32(msgCnt)})
}
return nil
}
func (channel *Channel) queueDelete(method *amqp.QueueDelete) *amqp.Error {
var qu *queue.Queue
var err *amqp.Error
if qu, err = channel.getQueueWithError(method.Queue, method); err != nil {
return err
}
if err = channel.checkQueueLockWithError(qu, method); err != nil {
return err
}
var length, errDel = channel.conn.GetVirtualHost().DeleteQueue(method.Queue, method.IfUnused, method.IfEmpty)
if errDel != nil {
return amqp.NewChannelError(amqp.PreconditionFailed, errDel.Error(), method.ClassIdentifier(), method.MethodIdentifier())
}
channel.SendMethod(&amqp.QueueDeleteOk{MessageCount: uint32(length)})
return nil
}