Add OpenCensus build modules required for gRPC

Add Soong build modules that are required compile-time and runtime
dependencies of gRPC Java client libraries. Note that the current
grpc-java-core module is imported which explains why there are no
build-time errors.

Test: m opencensus-java-api && m opencensus-java-contrib-grpc-metrics
Bug: 148404241
Change-Id: Ie92d1ca959ca2104bae7b92b4509b42f8e4184f7

2 files changed, 57 insertions, 0 deletions

diff --git a/api/Android.bp b/api/Android.bp
new file mode 100644
index 00000000..003a4dee
--- /dev/null
+++ b/api/Android.bp
@@ -0,0 +1,31 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// 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.
+//
+//
+
+java_library_host {
+    name: "opencensus-java-api",
+    srcs: [
+        "src/main/java/**/*.java",
+    ],
+    plugins: [
+        "dagger2-auto-value",
+    ],
+    libs: [
+        "error_prone_annotations",
+        "dagger2-auto-value",
+        "grpc-java-context",
+        "jsr305",
+    ],
+}
diff --git a/contrib/grpc_metrics/Android.bp b/contrib/grpc_metrics/Android.bp
new file mode 100644
index 00000000..9d045184
--- /dev/null
+++ b/contrib/grpc_metrics/Android.bp
@@ -0,0 +1,26 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// 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.
+//
+//
+
+java_library_host {
+    name: "opencensus-java-contrib-grpc-metrics",
+    srcs: [
+        "src/main/java/**/*.java",
+    ],
+    libs: [
+        "opencensus-java-api",
+        "guava",
+    ],
+}