build(android): add stub file for build constants

Author: kattrali

platform/jvm/capture/BUILD.bazel

@@ -16,9 +16,11 @@ kt_jvm_library(
 
 bitdrift_kt_android_library(
     name = "capture_logger_lib",
-    srcs = glob([
-        "src/main/**/*.kt",
-    ]),
+    srcs = glob(
+        include = ["src/main/**/*.kt"],
+        # Exclude BuildConstants stub file
+        exclude = ["src/main/**/BuildConstants.kt"],
+    ),
     custom_package = "io.bitdrift.capture",
     visibility = ["//visibility:public"],
     # Exported dependencies will appear as dependencies in the generated .pom xml.

platform/jvm/capture/src/main/kotlin/io/bitdrift/capture/BuildConstants.kt

@@ -0,0 +1,17 @@
+// capture-sdk - bitdrift's client SDK
+// Copyright Bitdrift, Inc. All rights reserved.
+//
+// Use of this source code is governed by a source available license that can be found in the
+// LICENSE file or at:
+// https://polyformproject.org/wp-content/uploads/2020/06/PolyForm-Shield-1.0.0.txt
+
+package io.bitdrift.capture
+
+/**
+ * THIS IS A STUB FILE. It makes the gradle build work, while the actual file
+ * is generated by bazel based on the contents of platform/shared/.sdk_version
+ */
+object BuildConstants {
+    /** Compiled version of the SDK (actual value generated during build) */
+    const val SDK_VERSION = "x.x.x"
+}

platform/jvm/capture/src/test/kotlin/io/bitdrift/capture/BuildConstantsTest.kt

@@ -0,0 +1,18 @@
+// capture-sdk - bitdrift's client SDK
+// Copyright Bitdrift, Inc. All rights reserved.
+//
+// Use of this source code is governed by a source available license that can be found in the
+// LICENSE file or at:
+// https://polyformproject.org/wp-content/uploads/2020/06/PolyForm-Shield-1.0.0.txt
+
+package io.bitdrift.capture
+
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.Test
+
+class BuildConstantsTest {
+    @Test
+    fun testStubConstantNotUsed() {
+        assertThat(BuildConstants.SDK_VERSION).isNotEqualTo("x.x.x")
+    }
+}