[json] IJPL-173495 Report failures to FUS to be able to investigate a missing downloads problem faster

GitOrigin-RevId: 109ad24b92cd2ebd43b24f20279d2725a61d4121

json/resources/intellij.json.xml

@@ -120,6 +120,7 @@
 
     <pluginSuggestionProvider implementation="com.jetbrains.jsonSchema.wiremock.WireMockSuggestionProvider"/>
     <statistics.counterUsagesCollector implementationClass="com.jetbrains.jsonSchema.fus.JsonFeatureUsageCollector"/>
+    <statistics.counterUsagesCollector implementationClass="com.jetbrains.jsonSchema.fus.JsonHttpFileLoadingUsageCollector"/>
     <statistics.validation.customValidationRule implementation="com.jetbrains.jsonSchema.fus.JsonSchemaIdValidationRule"/>
   </extensions>
 

json/src/com/jetbrains/jsonSchema/fus/JsonHttpFileResolveFus.kt

@@ -0,0 +1,56 @@
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package com.jetbrains.jsonSchema.fus
+
+import com.intellij.internal.statistic.eventLog.EventLogGroup
+import com.intellij.internal.statistic.eventLog.events.EventFields
+import com.intellij.internal.statistic.service.fus.collectors.CounterUsagesCollector
+import com.intellij.openapi.vfs.impl.http.RemoteFileState
+
+internal object JsonHttpFileLoadingUsageCollector : CounterUsagesCollector() {
+  private val jsonHttpFileResolveGroup = EventLogGroup(
+    id = "json.http.file.resolve",
+    version = 1,
+  )
+
+  internal val jsonSchemaHighlightingSessionData =
+    jsonHttpFileResolveGroup.registerVarargEvent(
+      "json.schema.highlighting.session.finished",
+      JsonHttpFileNioFile,
+      JsonHttpFileNioFileCanBeRead,
+      JsonHttpFileNioFileLength,
+      JsonHttpFileVfsFile,
+      JsonHttpFileSyncRefreshVfsFile,
+      JsonHttpFileVfsFileValidity,
+      JsonHttpFileDownloadState
+    )
+
+  override fun getGroup(): EventLogGroup = jsonHttpFileResolveGroup
+}
+
+internal val JsonHttpFileNioFile = EventFields.Boolean("nio_file_resolve_status", "Remote schema found via nio.file api")
+internal val JsonHttpFileNioFileCanBeRead = EventFields.Boolean("nio_file_can_read_status", "Remote schema found via nio.file api can be read")
+internal val JsonHttpFileNioFileLength = EventFields.RoundedLong("nio_file_length_status", "Remote schema found via nio.file api length")
+internal val JsonHttpFileVfsFile = EventFields.Boolean("vfs_file_resolve_status", "Remote schema found via VFS api")
+internal val JsonHttpFileSyncRefreshVfsFile = EventFields.Boolean("vfs_refresh_file_resolve_status", "Remote schema found via VFS api after explicit synchronous refresh")
+internal val JsonHttpFileVfsFileValidity = EventFields.Boolean("vfs_file_validity_status", "Remote schema VFS file validity")
+internal val JsonHttpFileDownloadState = EventFields.Enum<JsonRemoteSchemaDownloadState>("http_file_download_status", "Remote file download state")
+
+internal enum class JsonRemoteSchemaDownloadState {
+  DOWNLOADING_NOT_STARTED,
+  DOWNLOADING_IN_PROGRESS,
+  DOWNLOADED,
+  ERROR_OCCURRED,
+  NO_STATE;
+
+  companion object {
+    fun fromRemoteFileState(state: RemoteFileState?): JsonRemoteSchemaDownloadState {
+      return when (state) {
+        null -> NO_STATE
+        RemoteFileState.DOWNLOADING_NOT_STARTED -> DOWNLOADING_NOT_STARTED
+        RemoteFileState.DOWNLOADING_IN_PROGRESS -> DOWNLOADING_IN_PROGRESS
+        RemoteFileState.DOWNLOADED -> DOWNLOADED
+        RemoteFileState.ERROR_OCCURRED -> ERROR_OCCURRED
+      }
+    }
+  }
+}

json/src/com/jetbrains/jsonSchema/widget/failedSchemaLoadingDiagnostics.kt

@@ -6,6 +6,7 @@ import com.intellij.openapi.diagnostic.Logger
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.vfs.VfsUtil
 import com.intellij.openapi.vfs.impl.http.HttpVirtualFile
+import com.jetbrains.jsonSchema.fus.*
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.launch
 
@@ -27,6 +28,15 @@ internal fun logSchemaDownloadFailureDiagnostics(schemaFile: HttpVirtualFile, pr
     val anotherFileLookupAttempt = VfsUtil.findFile(schemaFile.toNioPath(), true)
     val isNull = anotherFileLookupAttempt == null
     val isValid = anotherFileLookupAttempt?.isValid
+    JsonHttpFileLoadingUsageCollector.jsonSchemaHighlightingSessionData.log(
+      JsonHttpFileNioFile.with(nioFileExists),
+      JsonHttpFileNioFileCanBeRead.with(canRead),
+      JsonHttpFileNioFileLength.with(nioFileLength),
+      JsonHttpFileVfsFile.with(schemaFile.fileInfo?.localFile != null),
+      JsonHttpFileSyncRefreshVfsFile.with(anotherFileLookupAttempt != null),
+      JsonHttpFileVfsFileValidity.with(isValid ?: false),
+      JsonHttpFileDownloadState.with(JsonRemoteSchemaDownloadState.fromRemoteFileState(stateOrNull))
+    )
     Logger.getInstance(schemaFile.javaClass).error("$instantData, syncRefreshFileIsNull: $isNull, syncRefreshFileIsValid: $isValid")
   }
 }