fbandroid/libraries/fresco/imagepipeline/src/main/java/com/facebook/i…

…magepipeline/producers/BaseNetworkFetcher.java

Reviewed By: oprisnik

Differential Revision: D39767602

fbshipit-source-id: fbc0a5e016c47bbd3f45675c2449341e740beae5

imagepipeline/src/main/java/com/facebook/imagepipeline/producers/BaseNetworkFetcher.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.imagepipeline.producers
+
+/**
+ * Base class for [NetworkFetcher].
+ *
+ * Intermediate results are propagated.
+ *
+ * {#code getExtraMap} returns null.
+ */
+abstract class BaseNetworkFetcher<FETCH_STATE : FetchState?> : NetworkFetcher<FETCH_STATE> {
+
+  override fun shouldPropagate(fetchState: FETCH_STATE): Boolean = true
+
+  override fun onFetchCompletion(fetchState: FETCH_STATE, byteSize: Int) {
+    // no-op
+  }
+
+  override fun getExtraMap(fetchState: FETCH_STATE, byteSize: Int): Map<String, String>? = null
+}