2017-06-28 16:10:17 +01:00
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// Copyright 2017 Vector Creations Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package queue
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import (
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"fmt"
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"sync"
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"github.com/matrix-org/gomatrixserverlib"
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2017-11-16 10:12:02 +00:00
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log "github.com/sirupsen/logrus"
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2017-06-28 16:10:17 +01:00
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)
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// OutgoingQueues is a collection of queues for sending transactions to other
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// matrix servers
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type OutgoingQueues struct {
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origin gomatrixserverlib.ServerName
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client *gomatrixserverlib.FederationClient
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// The queuesMutex protects queues
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queuesMutex sync.Mutex
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queues map[gomatrixserverlib.ServerName]*destinationQueue
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}
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// NewOutgoingQueues makes a new OutgoingQueues
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func NewOutgoingQueues(origin gomatrixserverlib.ServerName, client *gomatrixserverlib.FederationClient) *OutgoingQueues {
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return &OutgoingQueues{
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origin: origin,
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client: client,
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queues: map[gomatrixserverlib.ServerName]*destinationQueue{},
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}
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}
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// SendEvent sends an event to the destinations
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func (oqs *OutgoingQueues) SendEvent(
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ev *gomatrixserverlib.Event, origin gomatrixserverlib.ServerName,
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destinations []gomatrixserverlib.ServerName,
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) error {
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if origin != oqs.origin {
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2018-08-10 16:26:57 +01:00
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// TODO: Support virtual hosting; gh issue #577.
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2017-06-28 16:10:17 +01:00
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return fmt.Errorf(
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"sendevent: unexpected server to send as: got %q expected %q",
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origin, oqs.origin,
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)
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}
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// Remove our own server from the list of destinations.
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destinations = filterDestinations(oqs.origin, destinations)
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log.WithFields(log.Fields{
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"destinations": destinations, "event": ev.EventID(),
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}).Info("Sending event")
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oqs.queuesMutex.Lock()
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defer oqs.queuesMutex.Unlock()
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for _, destination := range destinations {
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oq := oqs.queues[destination]
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if oq == nil {
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oq = &destinationQueue{
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origin: oqs.origin,
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destination: destination,
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client: oqs.client,
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}
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oqs.queues[destination] = oq
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}
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2018-08-10 16:26:57 +01:00
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2017-06-28 16:10:17 +01:00
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oq.sendEvent(ev)
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}
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2018-08-10 16:26:57 +01:00
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return nil
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}
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// SendEDU sends an EDU event to the destinations
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func (oqs *OutgoingQueues) SendEDU(
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e *gomatrixserverlib.EDU, origin gomatrixserverlib.ServerName,
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destinations []gomatrixserverlib.ServerName,
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) error {
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if origin != oqs.origin {
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// TODO: Support virtual hosting; gh issue #577.
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return fmt.Errorf(
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"sendevent: unexpected server to send as: got %q expected %q",
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origin, oqs.origin,
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)
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}
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// Remove our own server from the list of destinations.
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destinations = filterDestinations(oqs.origin, destinations)
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log.WithFields(log.Fields{
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"destinations": destinations, "edu_type": e.Type,
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}).Info("Sending EDU event")
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oqs.queuesMutex.Lock()
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defer oqs.queuesMutex.Unlock()
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for _, destination := range destinations {
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oq := oqs.queues[destination]
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if oq == nil {
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oq = &destinationQueue{
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origin: oqs.origin,
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destination: destination,
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client: oqs.client,
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}
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oqs.queues[destination] = oq
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}
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oq.sendEDU(e)
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}
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2017-06-28 16:10:17 +01:00
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return nil
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}
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// filterDestinations removes our own server from the list of destinations.
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// Otherwise we could end up trying to talk to ourselves.
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func filterDestinations(origin gomatrixserverlib.ServerName, destinations []gomatrixserverlib.ServerName) []gomatrixserverlib.ServerName {
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var result []gomatrixserverlib.ServerName
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for _, destination := range destinations {
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if destination == origin {
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continue
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}
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result = append(result, destination)
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}
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return result
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}
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