[Android][Kotlin] fixed build after decomission of jcenter and gradle update (#7840)

* [Android] fixed build after decomission of jcenter

JCenter[1] has been removed and now is failing android build. This
change updates the configuration to remove this and few other warnings.

1 - https://developer.android.com/studio/build/jcenter-migration

* [Kotlin] fix build for latest gradle version 8.0.1

---------

Co-authored-by: Derek Bailey <derekbailey@google.com>

kotlin/benchmark/src/jvmMain/kotlin/com/google/flatbuffers/kotlin/benchmark/FlexBuffersBenchmark.kt

@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 package com.google.flatbuffers.kotlin.benchmark
-
 import com.google.flatbuffers.ArrayReadWriteBuf
 import com.google.flatbuffers.FlexBuffers
 import com.google.flatbuffers.FlexBuffersBuilder.BUILDER_FLAG_SHARE_ALL
@@ -35,7 +34,7 @@ import java.util.concurrent.TimeUnit
 @BenchmarkMode(Mode.AverageTime)
 @OutputTimeUnit(TimeUnit.NANOSECONDS)
 @Measurement(iterations = 20, time = 1, timeUnit = TimeUnit.NANOSECONDS)
-class FlexBuffersBenchmark {
+open class FlexBuffersBenchmark {
 
   var initialCapacity = 1024
   var value: Double = 0.0
@@ -49,7 +48,7 @@ class FlexBuffersBenchmark {
   }
 
   @Benchmark
-  fun mapKotlin(blackhole: Blackhole) {
+  open fun mapKotlin(blackhole: Blackhole) {
     val kBuilder = FlexBuffersBuilder(initialCapacity, FlexBuffersBuilder.SHARE_KEYS_AND_STRINGS)
     kBuilder.putMap {
       this["hello"] = "world"
@@ -72,7 +71,7 @@ class FlexBuffersBenchmark {
   }
 
   @Benchmark
-  fun mapJava(blackhole: Blackhole) {
+  open fun mapJava(blackhole: Blackhole) {
     val jBuilder = com.google.flatbuffers.FlexBuffersBuilder(ArrayReadWriteBuf(initialCapacity), BUILDER_FLAG_SHARE_ALL)
     val startMap = jBuilder.startMap()
     jBuilder.putString("hello", "world")
@@ -102,7 +101,7 @@ class FlexBuffersBenchmark {
   }
 
   @Benchmark
-  fun intArrayKotlin(blackhole: Blackhole) {
+  open fun intArrayKotlin(blackhole: Blackhole) {
     val kBuilder = FlexBuffersBuilder(initialCapacity, FlexBuffersBuilder.SHARE_KEYS_AND_STRINGS)
     kBuilder.put(bigIntArray)
     val root = getRoot(kBuilder.finish())
@@ -110,7 +109,7 @@ class FlexBuffersBenchmark {
   }
 
   @Benchmark
-  fun intArrayJava(blackhole: Blackhole) {
+  open fun intArrayJava(blackhole: Blackhole) {
     val jBuilder = com.google.flatbuffers.FlexBuffersBuilder(ArrayReadWriteBuf(initialCapacity), BUILDER_FLAG_SHARE_ALL)
     val v = jBuilder.startVector()
     bigIntArray.forEach { jBuilder.putInt(it) }
@@ -126,7 +125,7 @@ class FlexBuffersBenchmark {
   }
 
   @Benchmark
-  fun stringArrayKotlin(blackhole: Blackhole) {
+  open fun stringArrayKotlin(blackhole: Blackhole) {
     val kBuilder = FlexBuffersBuilder(initialCapacity, FlexBuffersBuilder.SHARE_KEYS_AND_STRINGS)
     kBuilder.putVector { stringValue.forEach { kBuilder.put(it) } }
     kBuilder.finish()
@@ -136,7 +135,7 @@ class FlexBuffersBenchmark {
   }
 
   @Benchmark
-  fun stringArrayJava(blackhole: Blackhole) {
+  open fun stringArrayJava(blackhole: Blackhole) {
     val jBuilder = com.google.flatbuffers.FlexBuffersBuilder(ArrayReadWriteBuf(initialCapacity), BUILDER_FLAG_SHARE_ALL)
     val v = jBuilder.startVector()
     stringValue.forEach { jBuilder.putString(it) }
@@ -148,7 +147,7 @@ class FlexBuffersBenchmark {
   }
 
   @Benchmark
-  fun stringMapKotlin(blackhole: Blackhole) {
+  open fun stringMapKotlin(blackhole: Blackhole) {
     val kBuilder = FlexBuffersBuilder(initialCapacity, FlexBuffersBuilder.SHARE_KEYS_AND_STRINGS)
     val pos = kBuilder.startMap()
     for (i in stringKey.indices) {
@@ -165,7 +164,7 @@ class FlexBuffersBenchmark {
   }
 
   @Benchmark
-  fun stringMapBytIndexKotlin(blackhole: Blackhole) {
+  open fun stringMapBytIndexKotlin(blackhole: Blackhole) {
     val kBuilder = FlexBuffersBuilder(initialCapacity, FlexBuffersBuilder.SHARE_KEYS_AND_STRINGS)
     val pos = kBuilder.startMap()
     for (i in stringKey.indices) {
@@ -180,7 +179,7 @@ class FlexBuffersBenchmark {
   }
 
   @Benchmark
-  fun stringMapJava(blackhole: Blackhole) {
+  open fun stringMapJava(blackhole: Blackhole) {
     val jBuilder = com.google.flatbuffers.FlexBuffersBuilder(ArrayReadWriteBuf(initialCapacity), BUILDER_FLAG_SHARE_ALL)
     val v = jBuilder.startMap()
     for (i in stringKey.indices) {

kotlin/benchmark/src/jvmMain/kotlin/com/google/flatbuffers/kotlin/benchmark/JsonBenchmark.kt

@@ -41,7 +41,7 @@ import java.util.concurrent.TimeUnit
 @BenchmarkMode(Mode.AverageTime)
 @OutputTimeUnit(TimeUnit.MICROSECONDS)
 @Measurement(iterations = 100, time = 1, timeUnit = TimeUnit.MICROSECONDS)
-class JsonBenchmark {
+open class JsonBenchmark {
 
   final val moshi = Moshi.Builder()
     .addLast(KotlinJsonAdapterFactory())
@@ -76,46 +76,46 @@ class JsonBenchmark {
 
   // TWITTER
   @Benchmark
-  fun readTwitterFlexBuffers(hole: Blackhole? = null) = hole?.consume(readFlexBuffers(twitterData))
+  open fun readTwitterFlexBuffers(hole: Blackhole? = null) = hole?.consume(readFlexBuffers(twitterData))
   @Benchmark
-  fun readTwitterMoshi(hole: Blackhole?) = hole?.consume(readMoshi(twitterData))
+  open fun readTwitterMoshi(hole: Blackhole?) = hole?.consume(readMoshi(twitterData))
   @Benchmark
-  fun readTwitterGson(hole: Blackhole?) = hole?.consume(readGson(twitterData))
+  open fun readTwitterGson(hole: Blackhole?) = hole?.consume(readGson(twitterData))
 
   @Benchmark
-  fun roundTripTwitterFlexBuffers(hole: Blackhole? = null) = hole?.consume(readFlexBuffers(twitterData).toJson())
+  open fun roundTripTwitterFlexBuffers(hole: Blackhole? = null) = hole?.consume(readFlexBuffers(twitterData).toJson())
   @Benchmark
-  fun roundTripTwitterMoshi(hole: Blackhole?) = hole?.consume(moshiAdapter.toJson(readMoshi(twitterData)))
+  open fun roundTripTwitterMoshi(hole: Blackhole?) = hole?.consume(moshiAdapter.toJson(readMoshi(twitterData)))
   @Benchmark
-  fun roundTripTwitterGson(hole: Blackhole?) = hole?.consume(gson.toJson(readGson(twitterData)))
+  open fun roundTripTwitterGson(hole: Blackhole?) = hole?.consume(gson.toJson(readGson(twitterData)))
 
   // CITM
   @Benchmark
-  fun readCITMFlexBuffers(hole: Blackhole? = null) = hole?.consume(readFlexBuffers(citmData))
+  open fun readCITMFlexBuffers(hole: Blackhole? = null) = hole?.consume(readFlexBuffers(citmData))
   @Benchmark
-  fun readCITMMoshi(hole: Blackhole?) = hole?.consume(moshiAdapter.toJson(readMoshi(citmData)))
+  open fun readCITMMoshi(hole: Blackhole?) = hole?.consume(moshiAdapter.toJson(readMoshi(citmData)))
   @Benchmark
-  fun readCITMGson(hole: Blackhole?) = hole?.consume(gson.toJson(readGson(citmData)))
+  open fun readCITMGson(hole: Blackhole?) = hole?.consume(gson.toJson(readGson(citmData)))
 
   @Benchmark
-  fun roundTripCITMFlexBuffers(hole: Blackhole? = null) = hole?.consume(readFlexBuffers(citmData).toJson())
+  open fun roundTripCITMFlexBuffers(hole: Blackhole? = null) = hole?.consume(readFlexBuffers(citmData).toJson())
   @Benchmark
-  fun roundTripCITMMoshi(hole: Blackhole?) = hole?.consume(moshiAdapter.toJson(readMoshi(citmData)))
+  open fun roundTripCITMMoshi(hole: Blackhole?) = hole?.consume(moshiAdapter.toJson(readMoshi(citmData)))
   @Benchmark
-  fun roundTripCITMGson(hole: Blackhole?) = hole?.consume(gson.toJson(readGson(citmData)))
+  open fun roundTripCITMGson(hole: Blackhole?) = hole?.consume(gson.toJson(readGson(citmData)))
 
   @Benchmark
-  fun writeCITMFlexBuffers(hole: Blackhole? = null) = hole?.consume(fbCitmRef.toJson())
+  open fun writeCITMFlexBuffers(hole: Blackhole? = null) = hole?.consume(fbCitmRef.toJson())
   @Benchmark
-  fun writeCITMMoshi(hole: Blackhole?) = hole?.consume(moshiAdapter.toJson(moshiCitmRef))
+  open fun writeCITMMoshi(hole: Blackhole?) = hole?.consume(moshiAdapter.toJson(moshiCitmRef))
   @Benchmark
-  fun writeCITMGson(hole: Blackhole?) = hole?.consume(gson.toJson(gsonCitmRef))
+  open fun writeCITMGson(hole: Blackhole?) = hole?.consume(gson.toJson(gsonCitmRef))
 
   // CANADA
   @Benchmark
-  fun readCanadaFlexBuffers(hole: Blackhole? = null) = hole?.consume(readFlexBuffers(canadaData))
+  open fun readCanadaFlexBuffers(hole: Blackhole? = null) = hole?.consume(readFlexBuffers(canadaData))
   @Benchmark
-  fun readCanadaMoshi(hole: Blackhole?) = hole?.consume(readMoshi(canadaData))
+  open fun readCanadaMoshi(hole: Blackhole?) = hole?.consume(readMoshi(canadaData))
   @Benchmark
-  fun readCanadaGson(hole: Blackhole?) = hole?.consume(readGson(canadaData))
+  open fun readCanadaGson(hole: Blackhole?) = hole?.consume(readGson(canadaData))
 }