Add MinIO admin client functionality (#1221)

Co-authored-by: Minio Trusted <trusted@minio.io>

admin/src/main/java/io/minio/admin/AddPolicyArgs.java

@@ -0,0 +1,55 @@
+/*
+ * MinIO Java SDK for Amazon S3 Compatible Cloud Storage,
+ * (C) 2015-2021 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.admin;
+
+import io.minio.BaseArgs;
+import io.minio.ListBucketsArgs;
+
+public class AddPolicyArgs extends BaseArgs {
+
+  protected String policyName;
+  protected String policyString;
+
+  public String policyName() {
+    return policyName;
+  }
+
+  public String policyString() {
+    return policyString;
+  }
+
+  public static AddPolicyArgs.Builder builder() {
+    return new AddPolicyArgs.Builder();
+  }
+
+  /** Argument builder of {@link ListBucketsArgs}. */
+  public static final class Builder extends BaseArgs.Builder<AddPolicyArgs.Builder, AddPolicyArgs> {
+    @Override
+    protected void validate(AddPolicyArgs args) {}
+
+    public AddPolicyArgs.Builder policyName(String policyName) {
+      this.operations.add(args -> args.policyName = policyName);
+      return this;
+    }
+
+    public AddPolicyArgs.Builder policyString(String policyString) {
+      this.operations.add(args -> args.policyString = policyString);
+      return this;
+    }
+  }
+}

admin/src/main/java/io/minio/admin/AddUserArgs.java

@@ -0,0 +1,62 @@
+/*
+ * MinIO Java SDK for Amazon S3 Compatible Cloud Storage,
+ * (C) 2015-2021 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.admin;
+
+import io.minio.BaseArgs;
+import io.minio.ListBucketsArgs;
+
+public class AddUserArgs extends BaseArgs {
+
+  protected String accessKey;
+  protected String secretKey;
+
+  public String accessKey() {
+    return accessKey;
+  }
+
+  public String secretKey() {
+    return secretKey;
+  }
+
+  public static AddUserArgs.Builder builder() {
+    return new AddUserArgs.Builder();
+  }
+
+  /** Argument builder of {@link ListBucketsArgs}. */
+  public static final class Builder extends BaseArgs.Builder<AddUserArgs.Builder, AddUserArgs> {
+    @Override
+    protected void validate(AddUserArgs args) {}
+
+    public AddUserArgs.Builder accessKey(String accessKey) {
+      this.operations.add(args -> args.accessKey = accessKey);
+      return this;
+    }
+
+    public AddUserArgs.Builder secretKey(String secretKey) {
+      this.operations.add(args -> args.secretKey = secretKey);
+      return this;
+    }
+  }
+
+  public UserInfo toUserInfo() {
+    UserInfo userInfo = new UserInfo();
+    userInfo.setSecretKey(secretKey());
+    userInfo.setStatus(UserInfo.STATUS_ENABLED);
+    return userInfo;
+  }
+}