Merge pull request #769 from nosqlbench/base64

base64

virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_bytebuffer/to_string/ToBase64.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2022 nosqlbench
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.nosqlbench.virtdata.library.basics.shared.from_bytebuffer.to_string;
+
+import com.amazonaws.util.Base64;
+import io.nosqlbench.virtdata.api.annotations.Categories;
+import io.nosqlbench.virtdata.api.annotations.Category;
+import io.nosqlbench.virtdata.api.annotations.ThreadSafeMapper;
+
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+import java.util.function.Function;
+
+/**
+ * Takes a bytebuffer and turns it into a base64 string
+ */
+
+@ThreadSafeMapper
+@Categories({Category.general})
+public class ToBase64 implements Function<ByteBuffer, String> {
+
+    @Override
+    public String apply(ByteBuffer input) {
+        ByteBuffer bb = input.asReadOnlyBuffer();
+        bb.position(0);
+        byte[] b = new byte[bb.limit()];
+        bb.get(b, 0, b.length);
+        return Base64.encodeAsString(b);
+    }
+
+}