Refactor server API

demo/playground/src/jvmMain/kotlin/formServer.kt

@@ -31,7 +31,7 @@ fun main() {
 
         val form = VisionOfHtmlForm("form").apply {
             onPropertyChange(visionManager.context) {
-                println(this)
+                println(values)
             }
         }
 
@@ -71,7 +71,7 @@ fun main() {
                     value = "Submit"
                 }
             }
-
+            println(form.values)
             vision(form)
         }
 

visionforge-core/src/commonMain/kotlin/space/kscience/visionforge/VisionChange.kt

@@ -55,6 +55,8 @@ public class VisionChangeBuilder : MutableVisionContainer<Vision> {
     private var propertyChange = MutableMeta()
     private val children: HashMap<Name, VisionChangeBuilder> = HashMap()
 
+    public operator fun get(name: Name): VisionChangeBuilder? = children[name]
+
     public fun isEmpty(): Boolean = propertyChange.isEmpty() && propertyChange.isEmpty() && children.isEmpty()
 
     @Synchronized
@@ -153,7 +155,7 @@ private fun CoroutineScope.collectChange(
  */
 public fun Vision.flowChanges(
     collectionDuration: Duration,
-    sendInitial: Boolean = false
+    sendInitial: Boolean = false,
 ): Flow<VisionChange> = flow {
     val manager = manager ?: error("Orphan vision could not collect changes")
     coroutineScope {

visionforge-core/src/jsMain/kotlin/space/kscience/visionforge/VisionClient.kt

@@ -69,9 +69,9 @@ public class VisionClient : AbstractPlugin() {
         changeCollector.propertyChanged(visionName, propertyName, item)
     }
 
-    public fun visionChanged(name: Name?, child: Vision?) {
-        changeCollector.setChild(name, child)
-    }
+//    public fun visionChanged(name: Name?, child: Vision?) {
+//        changeCollector.setChild(name, child)
+//    }
 
     private fun renderVision(element: Element, name: Name, vision: Vision, outputMeta: Meta) {
         vision.setAsRoot(visionManager)
@@ -79,7 +79,7 @@ public class VisionClient : AbstractPlugin() {
         renderer.render(element, name, vision, outputMeta)
     }
 
-    private fun updateVision(element: Element, name: Name, vision: Vision?, outputMeta: Meta) {
+    private fun startVisionUpdate(element: Element, name: Name, vision: Vision?, outputMeta: Meta) {
         element.attributes[OUTPUT_CONNECT_ATTRIBUTE]?.let { attr ->
             val wsUrl = if (attr.value.isBlank() || attr.value == VisionTagConsumer.AUTO_DATA_ATTRIBUTE) {
                 val endpoint = resolveEndpoint(element)
@@ -130,9 +130,10 @@ public class VisionClient : AbstractPlugin() {
                     feedbackJob = visionManager.context.launch {
                         while (isActive) {
                             delay(feedbackAggregationTime.milliseconds)
-                            if (!changeCollector.isEmpty()) {
-                                send(visionManager.encodeToString(changeCollector.deepCopy(visionManager)))
-                                changeCollector.reset()
+                            val change = changeCollector[name] ?: continue
+                            if (!change.isEmpty()) {
+                                send(visionManager.encodeToString(change.deepCopy(visionManager)))
+                                change.reset()
                             }
                         }
                     }
@@ -192,7 +193,7 @@ public class VisionClient : AbstractPlugin() {
                         response.text().then { text ->
                             val vision = visionManager.decodeFromString(text)
                             renderVision(element, name, vision, outputMeta)
-                            updateVision(element, name, vision, outputMeta)
+                            startVisionUpdate(element, name, vision, outputMeta)
                         }
                     } else {
                         logger.error { "Failed to fetch initial vision state from $fetchUrl" }
@@ -208,12 +209,12 @@ public class VisionClient : AbstractPlugin() {
                 }
                 logger.info { "Found embedded vision for output with name $name" }
                 renderVision(element, name, embeddedVision, outputMeta)
-                updateVision(element, name, embeddedVision, outputMeta)
+                startVisionUpdate(element, name, embeddedVision, outputMeta)
             }
 
             //Try to load vision via websocket
             element.attributes[OUTPUT_CONNECT_ATTRIBUTE] != null -> {
-                updateVision(element, name, null, outputMeta)
+                startVisionUpdate(element, name, null, outputMeta)
             }
 
             else -> error("No embedded vision data / fetch url for $name")

visionforge-server/src/main/kotlin/space/kscience/visionforge/server/VisionServer.kt

@@ -93,12 +93,12 @@ public fun Application.serveVisionData(
             webSocket("ws") {
                 val name: String = call.request.queryParameters.getOrFail("name")
                 application.log.debug("Opened server socket for $name")
-                val vision: Vision = resolveVision(Name.parse(name)) ?: error("Plot with id='$name' not registered")
+                val vision: Vision = resolveVision(Name.parse(name)) ?: error("Vision with id='$name' not registered")
 
                 launch {
                     for(frame in incoming) {
                         val data = frame.data.decodeToString()
-                        application.log.debug("Received update: \n$data")
+                        application.log.debug("Received update for $name: \n$data")
                         val change = configuration.visionManager.jsonFormat.decodeFromString(
                             VisionChange.serializer(), data
                         )
@@ -113,7 +113,7 @@ public fun Application.serveVisionData(
                                 VisionChange.serializer(),
                                 update
                             )
-                            application.log.debug("Sending update: \n$json")
+                            application.log.debug("Sending update for $name: \n$json")
                             outgoing.send(Frame.Text(json))
                         }.collect()
                     }
@@ -145,27 +145,6 @@ public fun Application.serveVisionData(
     data: Map<Name, Vision>,
 ): Unit = serveVisionData(configuration) { data[it] }
 
-//
-///**
-// * Compile a fragment to string and serve visions from it
-// */
-//public fun Route.serveVisionsFromFragment(
-//    consumer: TagConsumer<*>,
-//    sererPageUrl: Url,
-//    visionManager: VisionManager,
-//    fragment: HtmlVisionFragment,
-//): Unit {
-//    val visions = consumer.visionFragment(
-//        visionManager.context,
-//        embedData = true,
-//        fetchUpdatesUrl = "$serverUrl$route/ws",
-//        fragment = fragment
-//    )
-//
-//    serveVisionData(visionManager, visions)
-//}
-
-
 /**
  * Serve a page, potentially containing any number of visions at a given [route] with given [header].
  */