Use custom dispatcher for apis calls to FTL (#77)

* Use custom dispatcher for apis calls to FTL

* updating to make it configurable

* removing unused var

* lint fix

Author: rnakade

AndroidXCI/lib/src/main/kotlin/dev/androidx/ci/config/Config.kt

@@ -17,6 +17,7 @@
 package dev.androidx.ci.config
 
 import com.google.auth.Credentials
+import okhttp3.Dispatcher
 import okhttp3.logging.HttpLoggingInterceptor
 
 /**
@@ -44,6 +45,7 @@ internal class Config {
         val gcp: Gcp,
         val endPoint: String = "https://testing.googleapis.com/v1/",
         val httpLogLevel: HttpLoggingInterceptor.Level = HttpLoggingInterceptor.Level.NONE,
+        val dispatcher: Dispatcher = Dispatcher()
     )
     class Datastore(
         val gcp: Gcp,

AndroidXCI/lib/src/main/kotlin/dev/androidx/ci/firebase/FirebaseTestLabApi.kt

@@ -68,23 +68,26 @@ internal interface FirebaseTestLabApi {
         fun build(
             config: Config.FirebaseTestLab
         ): FirebaseTestLabApi {
-            val client = OkHttpClient.Builder().authenticateWith(
-                config.gcp
-            ).addInterceptor {
-                val newBuilder = it.request().newBuilder()
-                newBuilder.addHeader(
-                    "Content-Type", "application/json;charset=utf-8",
-                )
-                newBuilder.addHeader(
-                    "Accept", "application/json"
-                )
-                it.proceed(
-                    newBuilder.build()
-                )
-            }.withLog4J(
-                level = config.httpLogLevel,
-                klass = FirebaseTestLabApi::class
-            ).build()
+            val client = OkHttpClient
+                .Builder()
+                .dispatcher(config.dispatcher)
+                .authenticateWith(
+                    config.gcp
+                ).addInterceptor {
+                    val newBuilder = it.request().newBuilder()
+                    newBuilder.addHeader(
+                        "Content-Type", "application/json;charset=utf-8",
+                    )
+                    newBuilder.addHeader(
+                        "Accept", "application/json"
+                    )
+                    it.proceed(
+                        newBuilder.build()
+                    )
+                }.withLog4J(
+                    level = config.httpLogLevel,
+                    klass = FirebaseTestLabApi::class
+                ).build()
             val moshi = Moshi.Builder()
                 .add(MetadataKotlinJsonAdapterFactory())
                 .build()

AndroidXCI/lib/src/main/kotlin/dev/androidx/ci/testRunner/TestRunnerService.kt

@@ -18,6 +18,7 @@ import dev.androidx.ci.testRunner.vo.RemoteApk
 import dev.androidx.ci.testRunner.vo.UploadedApk
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.Dispatchers
+import okhttp3.Dispatcher
 import okhttp3.logging.HttpLoggingInterceptor
 import java.io.InputStream
 
@@ -173,7 +174,11 @@ interface TestRunnerService {
              * You may want to modify this if you want to use the same GCP account for isolated
              * test runs.
              */
-            testRunDataStoreObjectKind: String = AOSP_OBJECT_KIND
+            testRunDataStoreObjectKind: String = AOSP_OBJECT_KIND,
+            /**
+             * Dispatcher for making api calls to FTL
+             */
+            dispatcher: Dispatcher = Dispatcher()
         ): TestRunnerService {
             val httpLogLevel = if (logHttpCalls) {
                 HttpLoggingInterceptor.Level.BODY
@@ -211,6 +216,7 @@ interface TestRunnerService {
                     config = Config.FirebaseTestLab(
                         gcp = gcpConfig,
                         httpLogLevel = httpLogLevel,
+                        dispatcher = dispatcher
                     )
                 ),
                 gcsResultPath = gcsResultPath