Expose the transport factory as a Qualified component (#5237)

* Expose the transport factory as a Qualified dependency.

* Add CHANGELOG entry

* Fix version bump.

Author: rlazo

firebase-datatransport/CHANGELOG.md

@@ -1,3 +1,2 @@
 # Unreleased
-
-
+* [feature] Expose the transport factory as a qualified dependency based on the endpoint connected.

firebase-datatransport/gradle.properties

@@ -1,4 +1,3 @@
 version=18.1.9
 latestReleasedVersion=18.1.8
 android.enableUnitTestBinaryResources=true
-

firebase-datatransport/src/main/java/com/google/firebase/datatransport/LegacyTransportBackend.java

@@ -0,0 +1,23 @@
+// Copyright 2023 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.firebase.datatransport;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Target;
+import javax.inject.Qualifier;
+
+@Qualifier
+@Target({ElementType.PARAMETER, ElementType.METHOD, ElementType.FIELD})
+public @interface LegacyTransportBackend {}

firebase-datatransport/src/main/java/com/google/firebase/datatransport/package-info.java renamed to firebase-datatransport/src/main/java/com/google/firebase/datatransport/TransportBackend.java

@@ -1,4 +1,4 @@
-// Copyright 2019 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -12,5 +12,12 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-/** @hide */
 package com.google.firebase.datatransport;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Target;
+import javax.inject.Qualifier;
+
+@Qualifier
+@Target({ElementType.PARAMETER, ElementType.METHOD, ElementType.FIELD})
+public @interface TransportBackend {}

firebase-datatransport/src/main/java/com/google/firebase/datatransport/TransportRegistrar.java

@@ -16,12 +16,14 @@
 
 import android.content.Context;
 import androidx.annotation.Keep;
+import androidx.annotation.NonNull;
 import com.google.android.datatransport.TransportFactory;
 import com.google.android.datatransport.cct.CCTDestination;
 import com.google.android.datatransport.runtime.TransportRuntime;
 import com.google.firebase.components.Component;
 import com.google.firebase.components.ComponentRegistrar;
 import com.google.firebase.components.Dependency;
+import com.google.firebase.components.Qualified;
 import com.google.firebase.platforminfo.LibraryVersionComponent;
 import java.util.Arrays;
 import java.util.List;
@@ -31,6 +33,7 @@ public class TransportRegistrar implements ComponentRegistrar {
   private static final String LIBRARY_NAME = "fire-transport";
 
   @Override
+  @NonNull
   public List<Component<?>> getComponents() {
     return Arrays.asList(
         Component.builder(TransportFactory.class)
@@ -42,6 +45,22 @@ public List<Component<?>> getComponents() {
                   return TransportRuntime.getInstance().newFactory(CCTDestination.LEGACY_INSTANCE);
                 })
             .build(),
+        Component.builder(Qualified.qualified(LegacyTransportBackend.class, TransportFactory.class))
+            .add(Dependency.required(Context.class))
+            .factory(
+                c -> {
+                  TransportRuntime.initialize(c.get(Context.class));
+                  return TransportRuntime.getInstance().newFactory(CCTDestination.LEGACY_INSTANCE);
+                })
+            .build(),
+        Component.builder(Qualified.qualified(TransportBackend.class, TransportFactory.class))
+            .add(Dependency.required(Context.class))
+            .factory(
+                c -> {
+                  TransportRuntime.initialize(c.get(Context.class));
+                  return TransportRuntime.getInstance().newFactory(CCTDestination.INSTANCE);
+                })
+            .build(),
         LibraryVersionComponent.create(LIBRARY_NAME, BuildConfig.VERSION_NAME));
   }
 }