all: let interop test use shaded dependency correctly

alts/build.gradle

@@ -38,6 +38,7 @@ dependencies {
             libraries.truth
     testRuntime libraries.netty_tcnative,
             libraries.netty_epoll
+    shadow project(path: ':grpc-netty-shaded', configuration: 'shadow')
     signature 'org.codehaus.mojo.signature:java17:1.0@signature'
 }
 

gae-interop-testing/gae-jdk8/build.gradle

@@ -50,7 +50,9 @@ dependencies {
     compile project(":grpc-okhttp")
     compile project(":grpc-protobuf")
     compile project(":grpc-stub")
-    compile project(":grpc-interop-testing")
+    compile (project(":grpc-interop-testing")) {
+        exclude group: "io.grpc", module: "grpc-netty-shaded"
+    }
     compile libraries.netty_tcnative
 }
 

interop-testing/build.gradle

@@ -16,7 +16,7 @@ configurations {
 evaluationDependsOn(project(':grpc-context').path)
 
 dependencies {
-    compile project(':grpc-alts'),
+    compile project(path: ':grpc-alts', configuration: 'shadow'),
             project(':grpc-auth'),
             project(':grpc-census'),
             project(':grpc-core'),
@@ -113,21 +113,13 @@ task grpclb_long_lived_affinity_test_client(type: CreateStartScripts) {
 }
 
 task xds_test_client(type: CreateStartScripts) {
-    // Use task dependsOn instead of depending on project(':grpc-xds') in configurations because
-    // grpc-xds is not published yet and we don't want grpc-interop-testin to depend on it in maven.
-    dependsOn ':grpc-xds:shadowJar'
-    // Add all other dependencies that grpc-xds needs.
-    dependencies { compile project(':grpc-services'), libraries.netty_epoll }
     mainClassName = "io.grpc.testing.integration.XdsTestClient"
     applicationName = "xds-test-client"
-    outputDir = new File(project.buildDir, 'tmp')
-    classpath = startScripts.classpath + fileTree("${project(':grpc-xds').buildDir}/libs")
-    doLast {
-        unixScript.text = unixScript.text.replace(
-                '\$APP_HOME/lib/grpc-xds', "${project(':grpc-xds').buildDir}/libs/grpc-xds")
-        windowsScript.text = windowsScript.text.replace(
-                '%APP_HOME%\\lib\\grpc-xds', "${project(':grpc-xds').buildDir}\\libs\\grpc-xds")
+    dependencies {
+        runtime project(path: ':grpc-xds', configuration: 'shadow')
     }
+    outputDir = new File(project.buildDir, 'tmp')
+    classpath = startScripts.classpath
 }
 
 task xds_test_server(type: CreateStartScripts) {

interop-testing/src/test/java/io/grpc/ChannelAndServerBuilderTest.java

@@ -59,7 +59,11 @@ public static Collection<Object[]> params() throws Exception {
     }
     List<Object[]> classes = new ArrayList<>();
     for (ClassInfo classInfo : classInfos) {
-      Class<?> clazz = Class.forName(classInfo.getName(), false /*initialize*/, loader);
+      String className = classInfo.getName();
+      if (className.contains("io.grpc.netty.shaded.io.netty")) {
+        continue;
+      }
+      Class<?> clazz = Class.forName(className, false /*initialize*/, loader);
       if (ServerBuilder.class.isAssignableFrom(clazz) && clazz != ServerBuilder.class) {
         classes.add(new Object[]{clazz});
       } else if (ManagedChannelBuilder.class.isAssignableFrom(clazz)

xds/build.gradle

@@ -24,8 +24,7 @@ dependencies {
             project(':grpc-core'),
             project(':grpc-netty'),
             project(':grpc-services'),
-            project(':grpc-alts'),
-            libraries.netty_epoll
+            project(path: ':grpc-alts', configuration: 'shadow')
 
     compile (libraries.pgv) {
         // PGV depends on com.google.protobuf:protobuf-java 3.6.1 conflicting with :grpc-protobuf
@@ -39,11 +38,16 @@ dependencies {
 
     testCompile project(':grpc-core').sourceSets.test.output
 
-    compileOnly libraries.javax_annotation
+    compileOnly libraries.javax_annotation,
+            // At runtime use the epoll included in grpc-netty-shaded
+            libraries.netty_epoll
 
     testCompile project(':grpc-testing'), 
             project(':grpc-testing-proto'),
-            libraries.guava_testlib
+            libraries.guava_testlib,
+            libraries.netty_epoll
+
+    shadow project(path: ':grpc-netty-shaded', configuration: 'shadow')
     signature "org.codehaus.mojo.signature:java17:1.0@signature"
     testRuntime libraries.netty_tcnative
 }