Streaming (#49)

Add new status and notification websocket streaming capabilities

internal/gtsmodel/stream.go

@@ -0,0 +1,38 @@
+package gtsmodel
+
+import "sync"
+
+// StreamsForAccount is a wrapper for the multiple streams that one account can have running at the same time.
+// TODO: put a limit on this
+type StreamsForAccount struct {
+	// The currently held streams for this account
+	Streams []*Stream
+	// Mutex to lock/unlock when modifying the slice of streams.
+	sync.Mutex
+}
+
+// Stream represents one open stream for a client.
+type Stream struct {
+	// ID of this stream, generated during creation.
+	ID string
+	// Type of this stream: user/public/etc
+	Type string
+	// Channel of messages for the client to read from
+	Messages chan *Message
+	// Channel to close when the client drops away
+	Hangup chan interface{}
+	// Only put messages in the stream when Connected
+	Connected bool
+	// Mutex to lock/unlock when inserting messages, hanging up, changing the connected state etc.
+	sync.Mutex
+}
+
+// Message represents one streamed message.
+type Message struct {
+	// All the stream types this message should be delivered to.
+	Stream []string `json:"stream"`
+	// The event type of the message (update/delete/notification etc)
+	Event string `json:"event"`
+	// The actual payload of the message. In case of an update or notification, this will be a JSON string.
+	Payload string `json:"payload"`
+}