Add arg builder to bucketExists() method

README.md

@@ -60,7 +60,8 @@ public class FileUploader {
       MinioClient minioClient = new MinioClient("https://play.min.io", "Q3AM3UQ867SPQQA43P2F", "zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG");
 
       // Check if the bucket already exists.
-      boolean isExist = minioClient.bucketExists("asiatrip");
+      boolean isExist = 
+        minioClient.bucketExists(BucketExistsArgs.builder().bucket("asiatrip").build());
       if(isExist) {
         System.out.println("Bucket already exists.");
       } else {

api/src/main/java/io/minio/BucketExistsArgs.java

@@ -0,0 +1,27 @@
+/*
+ * MinIO Java SDK for Amazon S3 Compatible Cloud Storage, (C) 2020 MinIO, Inc.
+ *
+ * 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.minio;
+
+/** Argument class of MinioClient.bucketExists(). */
+public class BucketExistsArgs extends BucketArgs {
+  public static Builder builder() {
+    return new Builder();
+  }
+
+  /** Argument builder of {@link BucketExistsArgs}. */
+  public static final class Builder extends BucketArgs.Builder<Builder, BucketExistsArgs> {}
+}

api/src/main/java/io/minio/MinioClient.java

@@ -3524,20 +3524,56 @@ public List<Bucket> listBuckets()
    * @throws IOException thrown to indicate I/O error on S3 operation.
    * @throws NoSuchAlgorithmException thrown to indicate missing of MD5 or SHA-256 digest library.
    * @throws XmlParserException thrown to indicate XML parsing error.
+   * @deprecated use {@link #bucketExists(BucketExistsArgs)}
    */
+  @Deprecated
   public boolean bucketExists(String bucketName)
       throws ErrorResponseException, IllegalArgumentException, InsufficientDataException,
           InternalException, InvalidBucketNameException, InvalidKeyException,
           InvalidResponseException, IOException, NoSuchAlgorithmException, XmlParserException {
+    return bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());
+  }
+
+  /**
+   * Checks if a bucket exists.
+   *
+   * <pre>Example:{@code
+   * boolean found =
+   *      minioClient.bucketExists(BucketExistsArgs.builder().bucket("my-bucketname").build());
+   * if (found) {
+   *   System.out.println("my-bucketname exists");
+   * } else {
+   *   System.out.println("my-bucketname does not exist");
+   * }
+   * }</pre>
+   *
+   * @param args {@link BucketExistsArgs} object.
+   * @return boolean - True if the bucket exists.
+   * @throws ErrorResponseException thrown to indicate S3 service returned an error response.
+   * @throws IllegalArgumentException throws to indicate invalid argument passed.
+   * @throws IllegalArgumentException throws to indicate invalid argument passed.
+   * @throws InsufficientDataException thrown to indicate not enough data available in InputStream.
+   * @throws InternalException thrown to indicate internal library error.
+   * @throws InvalidBucketNameException thrown to indicate invalid bucket name passed.
+   * @throws InvalidKeyException thrown to indicate missing of HMAC SHA-256 library.
+   * @throws InvalidResponseException thrown to indicate S3 service returned invalid or no error
+   *     response.
+   * @throws IOException thrown to indicate I/O error on S3 operation.
+   * @throws NoSuchAlgorithmException thrown to indicate missing of MD5 or SHA-256 digest library.
+   * @throws XmlParserException thrown to indicate XML parsing error.
+   */
+  public boolean bucketExists(BucketExistsArgs args)
+      throws ErrorResponseException, IllegalArgumentException, InsufficientDataException,
+          InternalException, InvalidBucketNameException, InvalidKeyException,
+          InvalidResponseException, IOException, NoSuchAlgorithmException, XmlParserException {
     try {
-      executeHead(bucketName, null);
+      executeHead(args.bucket(), null);
       return true;
     } catch (ErrorResponseException e) {
       if (e.errorResponse().errorCode() != ErrorCode.NO_SUCH_BUCKET) {
         throw e;
       }
     }
-
     return false;
   }
 

docs/API.md

@@ -264,15 +264,15 @@ All APIs throw below exceptions in addition to specific to API.
 ## 2. Bucket operations
 
 <a name="bucketExists"></a>
-### bucketExists(String bucketName)
-`public boolean bucketExists(String bucketName)` _[[Javadoc]](http://minio.github.io/minio-java/io/minio/MinioClient.html#bucketExists-java.lang.String-)_
+### bucketExists(BucketExistsArgs args)
+`public boolean bucketExists(BucketExistsArgs args)` _[[Javadoc]](http://minio.github.io/minio-java/io/minio/MinioClient.html#bucketExists-io.minio.BucketExistsArgs-)_
 
 Checks if a bucket exists.
 
 __Parameters__
-| Parameter      | Type     | Description         |
-|:---------------|:---------|:--------------------|
-| ``bucketName`` | _String_ | Name of the bucket. |
+| Parameter      | Type                 | Description    |
+|:---------------|:---------------------|:---------------|
+| ``bucketName`` | _[BucketExistsArgs]_ | Arguments.     |
 
 | Returns                                |
 |:---------------------------------------|
@@ -281,7 +281,8 @@ __Parameters__
 __Example__
 ```java
 // Check whether 'my-bucketname' exists or not.
-boolean found = minioClient.bucketExists("my-bucketname");
+boolean found = 
+  minioClient.bucketExists(BucketExistsArgs.builder().bucket("my-bucketname").build());
 if (found) {
   System.out.println("my-bucketname exists");
 } else {
@@ -1767,3 +1768,4 @@ ObjectStat objectStat =
 [GetObjectArgs]: http://minio.github.io/minio-java/io/minio/GetObjectArgs.html
 [DownloadObjectArgs]: http://minio.github.io/minio-java/io/minio/DownloadObjectArgs.html
 [IsVersioningEnabledArgs]: http://minio.github.io/minio-java/io/minio/IsVersioningEnabledArgs.html
+[BucketExistsArgs]: http://minio.github.io/minio-java/io/minio/BucketExistsArgs.html

examples/BucketExists.java

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+import io.minio.BucketExistsArgs;
 import io.minio.MinioClient;
 import io.minio.errors.MinioException;
 import java.io.IOException;
@@ -37,7 +38,8 @@ public static void main(String[] args)
       //                                           "YOUR-SECRETACCESSKEY");
 
       // Check whether 'my-bucketname' exist or not.
-      boolean found = minioClient.bucketExists("my-bucketname");
+      boolean found =
+          minioClient.bucketExists(BucketExistsArgs.builder().bucket("my-bucketname").build());
       if (found) {
         System.out.println("my-bucketname exists");
       } else {

examples/EnableDisableObjectLegalHold.java

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+import io.minio.BucketExistsArgs;
 import io.minio.MakeBucketArgs;
 import io.minio.MinioClient;
 import io.minio.PutObjectOptions;
@@ -51,7 +52,8 @@ public static void main(String[] args)
               "zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG");
 
       // Create bucket if it doesn't exist.
-      boolean found = minioClient.bucketExists("my-bucketname");
+      boolean found =
+          minioClient.bucketExists(BucketExistsArgs.builder().bucket("my-bucketname").build());
       if (found) {
         System.out.println("my-bucketname already exists");
       } else {

examples/IsVersioningEnabled.java

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+import io.minio.BucketExistsArgs;
 import io.minio.EnableVersioningArgs;
 import io.minio.IsVersioningEnabledArgs;
 import io.minio.MakeBucketArgs;
@@ -40,7 +41,7 @@ public static void main(String[] args)
       //                                           "YOUR-SECRETACCESSKEY");
 
       // Create bucket 'my-bucketname' if it doesn`t exist.
-      if (!minioClient.bucketExists("my-bucketname")) {
+      if (!minioClient.bucketExists(BucketExistsArgs.builder().bucket("my-bucketname").build())) {
         minioClient.makeBucket(MakeBucketArgs.builder().bucket("my-bucketname").build());
         System.out.println("my-bucketname is created successfully");
       }

examples/ListIncompleteUploads.java

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+import io.minio.BucketExistsArgs;
 import io.minio.MinioClient;
 import io.minio.Result;
 import io.minio.errors.MinioException;
@@ -39,7 +40,8 @@ public static void main(String[] args)
       //                                           "YOUR-SECRETACCESSKEY");
 
       // Check whether 'my-bucketname' exist or not.
-      boolean found = minioClient.bucketExists("my-bucketname");
+      boolean found =
+          minioClient.bucketExists(BucketExistsArgs.builder().bucket("my-bucketname").build());
       if (found) {
         // List all incomplete multipart upload of objects in 'my-bucketname'
         Iterable<Result<Upload>> myObjects = minioClient.listIncompleteUploads("my-bucketname");

examples/ListObjects.java

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+import io.minio.BucketExistsArgs;
 import io.minio.ListObjectsArgs;
 import io.minio.MinioClient;
 import io.minio.Result;
@@ -40,7 +41,8 @@ public static void main(String[] args)
       //                                           "YOUR-SECRETACCESSKEY");
 
       // Check whether 'my-bucketname' exist or not.
-      boolean found = minioClient.bucketExists("my-bucketname");
+      boolean found =
+          minioClient.bucketExists(BucketExistsArgs.builder().bucket("my-bucketname").build());
       if (found) {
         // List objects from 'my-bucketname'
         Iterable<Result<Item>> myObjects =

examples/MakeBucket.java

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+import io.minio.BucketExistsArgs;
 import io.minio.MakeBucketArgs;
 import io.minio.MinioClient;
 import io.minio.errors.MinioException;
@@ -38,21 +39,23 @@ public static void main(String[] args)
       //                                           "YOUR-SECRETACCESSKEY");
 
       // Create bucket 'my-bucketname' if it doesn`t exist.
-      if (!minioClient.bucketExists("my-bucketname")) {
+      if (!minioClient.bucketExists(BucketExistsArgs.builder().bucket("my-bucketname").build())) {
         minioClient.makeBucket(MakeBucketArgs.builder().bucket("my-bucketname").build());
         System.out.println("my-bucketname is created successfully");
       }
 
       // Create bucket 'my-bucketname-in-eu' in 'eu-west-1' region if it doesn't exist.
-      if (!minioClient.bucketExists("my-bucketname-in-eu")) {
+      if (!minioClient.bucketExists(
+          BucketExistsArgs.builder().bucket("my-bucketname-in-eu").build())) {
         minioClient.makeBucket(
             MakeBucketArgs.builder().bucket("my-bucketname-in-eu").region("eu-west-1").build());
         System.out.println("my-bucketname-in-eu is created successfully");
       }
 
       // Create bucket 'my-bucketname-in-eu-with-object-lock' in 'eu-west-1' with object lock
       // functionality enabled.
-      if (!minioClient.bucketExists("my-bucketname-in-eu-with-object-lock")) {
+      if (!minioClient.bucketExists(
+          BucketExistsArgs.builder().bucket("my-bucketname-in-eu-with-object-lock").build())) {
         minioClient.makeBucket(
             MakeBucketArgs.builder()
                 .bucket("my-bucketname-in-eu-with-object-lock")

examples/RemoveBucket.java

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+import io.minio.BucketExistsArgs;
 import io.minio.MinioClient;
 import io.minio.RemoveBucketArgs;
 import io.minio.errors.MinioException;
@@ -39,7 +40,8 @@ public static void main(String[] args)
 
       // Remove bucket 'my-bucketname' if it exists.
       // This operation will only work if your bucket is empty.
-      boolean found = minioClient.bucketExists("my-bucketname");
+      boolean found =
+          minioClient.bucketExists(BucketExistsArgs.builder().bucket("my-bucketname").build());
       if (found) {
         minioClient.removeBucket(RemoveBucketArgs.builder().bucket("my-bucketname").build());
         System.out.println("my-bucketname is removed successfully");

examples/SetGetBucketObjectLockConfig.java

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+import io.minio.BucketExistsArgs;
 import io.minio.MakeBucketArgs;
 import io.minio.MinioClient;
 import io.minio.errors.MinioException;
@@ -34,7 +35,8 @@ public static void main(String[] args)
           new MinioClient("https://s3.amazonaws.com", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY");
 
       // Create bucket if it doesn't exist.
-      boolean found = s3Client.bucketExists("my-bucketname");
+      boolean found =
+          s3Client.bucketExists(BucketExistsArgs.builder().bucket("my-bucketname").build());
       if (found) {
         System.out.println("my-bucketname already exists");
       } else {

functional/FunctionalTest.java

@@ -19,6 +19,7 @@
 import static java.nio.file.StandardOpenOption.CREATE;
 
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
+import io.minio.BucketExistsArgs;
 import io.minio.CloseableIterator;
 import io.minio.ComposeSource;
 import io.minio.CopyConditions;
@@ -527,29 +528,24 @@ public static void listBuckets_test() throws Exception {
     }
   }
 
-  /** Test: bucketExists(String bucketName). */
+  /** Test: bucketExists(BucketExistsArgs args). */
   public static void bucketExists_test() throws Exception {
+    String methodName = "bucketExists(BucketExistsArgs args)";
     if (!mintEnv) {
-      System.out.println("Test: bucketExists(String bucketName)");
+      System.out.println("Test: " + methodName);
     }
 
     long startTime = System.currentTimeMillis();
     try {
       String name = getRandomName();
       client.makeBucket(MakeBucketArgs.builder().bucket(name).build());
-      if (!client.bucketExists(name)) {
+      if (!client.bucketExists(BucketExistsArgs.builder().bucket(name).build())) {
         throw new Exception("[FAILED] bucket does not exist");
       }
       client.removeBucket(RemoveBucketArgs.builder().bucket(name).build());
-      mintSuccessLog("bucketExists(String bucketName)", null, startTime);
+      mintSuccessLog(methodName, null, startTime);
     } catch (Exception e) {
-      mintFailedLog(
-          "bucketExists(String bucketName)",
-          null,
-          startTime,
-          null,
-          e.toString() + " >>> " + Arrays.toString(e.getStackTrace()));
-      throw e;
+      handleException(methodName, null, startTime, e);
     }
   }