feat: add configuration java support

android/src/main/java/com/amplitude/android/Configuration.kt

@@ -1,32 +1,32 @@
 package com.amplitude.android
 
 import android.content.Context
-import com.amplitude.android.events.Plan
 import com.amplitude.android.utilities.AndroidLoggerProvider
 import com.amplitude.android.utilities.AndroidStorageProvider
 import com.amplitude.core.Configuration
 import com.amplitude.core.EventCallBack
 import com.amplitude.core.LoggerProvider
 import com.amplitude.core.ServerZone
 import com.amplitude.core.StorageProvider
+import com.amplitude.core.events.Plan
 
 class Configuration @JvmOverloads constructor(
-    apiKey: String,
+    override val apiKey: String,
     val context: Context,
-    flushQueueSize: Int = FLUSH_QUEUE_SIZE,
-    flushIntervalMillis: Int = FLUSH_INTERVAL_MILLIS,
-    instanceName: String = DEFAULT_INSTANCE,
-    optOut: Boolean = false,
-    storageProvider: StorageProvider = AndroidStorageProvider(),
-    loggerProvider: LoggerProvider = AndroidLoggerProvider(),
-    minIdLength: Int? = null,
-    partnerId: String? = null,
-    callback: EventCallBack? = null,
-    flushMaxRetries: Int = FLUSH_MAX_RETRIES,
-    useBatch: Boolean = false,
-    serverZone: ServerZone = ServerZone.US,
-    serverUrl: String? = null,
-    plan: Plan? = null,
+    override var flushQueueSize: Int = FLUSH_QUEUE_SIZE,
+    override var flushIntervalMillis: Int = FLUSH_INTERVAL_MILLIS,
+    override var instanceName: String = DEFAULT_INSTANCE,
+    override var optOut: Boolean = false,
+    override val storageProvider: StorageProvider = AndroidStorageProvider(),
+    override val loggerProvider: LoggerProvider = AndroidLoggerProvider(),
+    override var minIdLength: Int? = null,
+    override var partnerId: String? = null,
+    override var callback: EventCallBack? = null,
+    override var flushMaxRetries: Int = FLUSH_MAX_RETRIES,
+    override var useBatch: Boolean = false,
+    override var serverZone: ServerZone = ServerZone.US,
+    override var serverUrl: String? = null,
+    override var plan: Plan? = null,
     val useAdvertisingIdForDeviceId: Boolean = false,
     val useAppSetIdForDeviceId: Boolean = false,
     val newDeviceIdPerInstall: Boolean = false,

android/src/main/java/com/amplitude/android/events/Export.kt

@@ -16,7 +16,7 @@ open class EventOptions : EventOptions()
 open class Identify : Identify()
 open class Revenue : Revenue()
 open class RevenueEvent : RevenueEvent()
-open class Plan(
+open class Plan @JvmOverloads constructor(
     branch: String? = null,
     source: String? = null,
     version: String? = null,

core/src/main/java/com/amplitude/core/Configuration.kt

@@ -8,21 +8,21 @@ import com.amplitude.core.utilities.InMemoryStorageProvider
 typealias EventCallBack = (BaseEvent, status: Int, message: String) -> Unit
 
 open class Configuration @JvmOverloads constructor(
-    val apiKey: String,
-    var flushQueueSize: Int = FLUSH_QUEUE_SIZE,
-    var flushIntervalMillis: Int = FLUSH_INTERVAL_MILLIS,
-    var instanceName: String = DEFAULT_INSTANCE,
-    var optOut: Boolean = false,
-    val storageProvider: StorageProvider = InMemoryStorageProvider(),
-    val loggerProvider: LoggerProvider = ConsoleLoggerProvider(),
-    var minIdLength: Int? = null,
-    var partnerId: String? = null,
-    val callback: EventCallBack? = null,
-    val flushMaxRetries: Int = FLUSH_MAX_RETRIES,
-    var useBatch: Boolean = false,
-    var serverZone: ServerZone = ServerZone.US,
-    var serverUrl: String? = null,
-    val plan: Plan? = null
+    open val apiKey: String,
+    open var flushQueueSize: Int = FLUSH_QUEUE_SIZE,
+    open var flushIntervalMillis: Int = FLUSH_INTERVAL_MILLIS,
+    open var instanceName: String = DEFAULT_INSTANCE,
+    open var optOut: Boolean = false,
+    open val storageProvider: StorageProvider = InMemoryStorageProvider(),
+    open val loggerProvider: LoggerProvider = ConsoleLoggerProvider(),
+    open var minIdLength: Int? = null,
+    open var partnerId: String? = null,
+    open var callback: EventCallBack? = null,
+    open var flushMaxRetries: Int = FLUSH_MAX_RETRIES,
+    open var useBatch: Boolean = false,
+    open var serverZone: ServerZone = ServerZone.US,
+    open var serverUrl: String? = null,
+    open var plan: Plan? = null
 ) {
 
     companion object {

samples/java-android-app/src/main/java/com/amplitude/android/sample/MainApplication.java

@@ -6,21 +6,29 @@
 import androidx.annotation.Nullable;
 
 import com.amplitude.android.Amplitude;
-import com.amplitude.android.Configuration;
+import com.amplitude.android.AmplitudeKt;
+import com.amplitude.android.events.Plan;
 import com.amplitude.core.events.BaseEvent;
 import com.amplitude.core.platform.Plugin;
 
 import java.util.HashMap;
 
+import kotlin.Unit;
+
 public class MainApplication extends Application {
     private static Amplitude amplitude;
 
     @Override
     public void onCreate() {
         super.onCreate();
 
+        Plan plan = new Plan("test branch", "test source", "test version", "test version id");
+
         // init instance
-        amplitude = new Amplitude(new Configuration(BuildConfig.AMPLITUDE_API_KEY, getApplicationContext()));
+        amplitude = AmplitudeKt.Amplitude(BuildConfig.AMPLITUDE_API_KEY, getApplicationContext(), configuration -> {
+            configuration.setPlan(plan);
+            return Unit.INSTANCE;
+        });
 
         // add sample plugin
         amplitude.add(new SamplePlugin());