added enforceRotation support to builder for ReEncryptInstructionFileRequest

Author: Anirav Kareddy

src/main/java/software/amazon/encryption/s3/internal/ReEncryptInstructionFileRequest.java

@@ -19,12 +19,14 @@ public class ReEncryptInstructionFileRequest {
   private final String key;
   private final RawKeyring newKeyring;
   private final String instructionFileSuffix;
+  private final boolean enforceRotation;
 
   private ReEncryptInstructionFileRequest(Builder builder) {
     bucket = builder.bucket;
     key = builder.key;
     newKeyring = builder.newKeyring;
     instructionFileSuffix = builder.instructionFileSuffix;
+    enforceRotation = builder.enforceRotation;
   }
 
   /**
@@ -56,6 +58,13 @@ public String instructionFileSuffix() {
     return instructionFileSuffix;
   }
 
+  /**
+   * @return whether to enforce rotation for the re-encrypted instruction file
+   */
+  public boolean enforceRotation() {
+    return enforceRotation;
+  }
+
   /**
    * Creates a builder that can be used to configure and create a {@link ReEncryptInstructionFileRequest}
    *
@@ -74,6 +83,7 @@ public static class Builder {
     private String key;
     private RawKeyring newKeyring;
     private String instructionFileSuffix = DEFAULT_INSTRUCTION_FILE_SUFFIX;
+    private boolean enforceRotation = false;
 
     /**
      * Sets the S3 bucket name for the re-encryption of instruction file.
@@ -121,6 +131,17 @@ public Builder instructionFileSuffix(String instructionFileSuffix) {
       return this;
     }
 
+    /**
+     * Sets whether to enforce rotation for the re-encrypted instruction file.
+     *
+     * @param enforceRotation whether to enforce rotation
+     * @return a reference to this object so that method calls can be chained together.
+     */
+    public Builder enforceRotation(boolean enforceRotation) {
+      this.enforceRotation = enforceRotation;
+      return this;
+    }
+
     /**
      * Validates and builds the ReEncryptInstructionFileRequest according
      * to the configuration options passed to the Builder object.