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mirror of https://github.com/mattermost/focalboard.git synced 2024-12-12 09:04:14 +02:00
focalboard/server/ws/plugin_adapter_client.go
Miguel de la Cruz ce98ec55fc
Recovers inactive websockets connections on reconnect in plugin mode (#1324)
* Stores a cache of inactive connections so their subscriptions are recovered on reconnections

* Adds test for getUserIDsForWorkspace and simplify messages through helpers

* Make the plugin websocket client more resilient

* Remove missed event callback and limit ws state polling to one at a time

* Add read lock for the plugin adapter and guarantee atomic ops on inactiveAt

* Add mutex to the plugin adapter client and tests to cover for races

* Split plugin adapter mutex in two and use them to lock only on data access

* Group plugin adapter fields by the mutex that's guarding them
2021-09-29 18:19:34 +02:00

87 lines
1.7 KiB
Go

package ws
import (
"sync"
"sync/atomic"
"time"
mmModel "github.com/mattermost/mattermost-server/v6/model"
)
type PluginAdapterClient struct {
inactiveAt int64
webConnID string
userID string
workspaces []string
blocks []string
mu sync.RWMutex
}
func (pac *PluginAdapterClient) isActive() bool {
return atomic.LoadInt64(&pac.inactiveAt) == 0
}
func (pac *PluginAdapterClient) hasExpired(threshold time.Duration) bool {
return !mmModel.GetTimeForMillis(atomic.LoadInt64(&pac.inactiveAt)).Add(threshold).After(time.Now())
}
func (pac *PluginAdapterClient) subscribeToWorkspace(workspaceID string) {
pac.mu.Lock()
defer pac.mu.Unlock()
pac.workspaces = append(pac.workspaces, workspaceID)
}
func (pac *PluginAdapterClient) unsubscribeFromWorkspace(workspaceID string) {
pac.mu.Lock()
defer pac.mu.Unlock()
newClientWorkspaces := []string{}
for _, id := range pac.workspaces {
if id != workspaceID {
newClientWorkspaces = append(newClientWorkspaces, id)
}
}
pac.workspaces = newClientWorkspaces
}
func (pac *PluginAdapterClient) unsubscribeFromBlock(blockID string) {
pac.mu.Lock()
defer pac.mu.Unlock()
newClientBlocks := []string{}
for _, id := range pac.blocks {
if id != blockID {
newClientBlocks = append(newClientBlocks, id)
}
}
pac.blocks = newClientBlocks
}
func (pac *PluginAdapterClient) isSubscribedToWorkspace(workspaceID string) bool {
pac.mu.RLock()
defer pac.mu.RUnlock()
for _, id := range pac.workspaces {
if id == workspaceID {
return true
}
}
return false
}
//nolint:unused
func (pac *PluginAdapterClient) isSubscribedToBlock(blockID string) bool {
pac.mu.RLock()
defer pac.mu.RUnlock()
for _, id := range pac.blocks {
if id == blockID {
return true
}
}
return false
}