openinx commented on a change in pull request #3197:
URL: https://github.com/apache/iceberg/pull/3197#discussion_r718103486



##########
File path: 
aliyun/src/test/java/org/apache/iceberg/aliyun/oss/AliyunOSSTestUtility.java
##########
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.iceberg.aliyun.oss;
+
+import org.apache.iceberg.aliyun.oss.mock.AliyunOSSMockRule;
+import org.apache.iceberg.common.DynConstructors;
+import org.apache.iceberg.relocated.com.google.common.base.Strings;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class AliyunOSSTestUtility {
+  private static final Logger LOG = 
LoggerFactory.getLogger(AliyunOSSTestUtility.class);
+  private static final String ALIYUN_OSS_TEST_RULE_CLASS = 
"ALIYUN_OSS_TEST_RULE_CLASS";

Review comment:
       In our own test environments, all the env variables has the same prefix 
`ALIYUN_TEST_` because people could easily identify them from the common prefix:
   
   ```bash
   export 
ALIYUN_TEST_OSS_TEST_RULE_CLASS=org.apache.iceberg.aliyun.oss.OSSIntegrationTestRule
   export ALIYUN_TEST_BUCKET=iceberg-test                                       
                                              
   export ALIYUN_TEST_ACCESS_KEY_ID=******                        
   export ALIYUN_TEST_ACCESS_KEY_SECRET=******              
   export ALIYUN_TEST_OSS_WAREHOUSE=******
   export ALIYUN_TEST_OSS_ENDPOINT=******               
   export ALIYUN_TEST_DLF_CATALOG_ID=******                               
   export ALIYUN_TEST_DLF_END_POINT=******                 
   export ALIYUN_TEST_DLF_REGION_ID=******
   ```
   
   I will suggest use the same prefix.

##########
File path: 
aliyun/src/test/java/org/apache/iceberg/aliyun/oss/AliyunOSSTestUtility.java
##########
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.iceberg.aliyun.oss;
+
+import org.apache.iceberg.aliyun.oss.mock.AliyunOSSMockRule;
+import org.apache.iceberg.common.DynConstructors;
+import org.apache.iceberg.relocated.com.google.common.base.Strings;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class AliyunOSSTestUtility {
+  private static final Logger LOG = 
LoggerFactory.getLogger(AliyunOSSTestUtility.class);
+  private static final String ALIYUN_OSS_TEST_RULE_CLASS = 
"ALIYUN_OSS_TEST_RULE_CLASS";
+
+  private AliyunOSSTestUtility() {
+  }
+
+  public static AliyunOSSTestRule initialize() {
+    String implClass = System.getenv(ALIYUN_OSS_TEST_RULE_CLASS);

Review comment:
       Nit:  it looks more clear to move this sentence to line 39 because that 
means we are planning to check & load the `implClass`, it's a separate code 
block.

##########
File path: 
aliyun/src/test/java/org/apache/iceberg/aliyun/oss/AliyunOSSTestUtility.java
##########
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.iceberg.aliyun.oss;
+
+import org.apache.iceberg.aliyun.oss.mock.AliyunOSSMockRule;
+import org.apache.iceberg.common.DynConstructors;
+import org.apache.iceberg.relocated.com.google.common.base.Strings;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class AliyunOSSTestUtility {
+  private static final Logger LOG = 
LoggerFactory.getLogger(AliyunOSSTestUtility.class);
+  private static final String ALIYUN_OSS_TEST_RULE_CLASS = 
"ALIYUN_OSS_TEST_RULE_CLASS";
+
+  private AliyunOSSTestUtility() {
+  }
+
+  public static AliyunOSSTestRule initialize() {
+    String implClass = System.getenv(ALIYUN_OSS_TEST_RULE_CLASS);
+    AliyunOSSTestRule testRule;
+
+    if (!Strings.isNullOrEmpty(implClass)) {
+      DynConstructors.Ctor<AliyunOSSTestRule> ctor;
+      LOG.info("The initializing AliyunOSSTestRule implementation is: {}", 
implClass);
+      try {
+        ctor = 
DynConstructors.builder(AliyunOSSTestRule.class).impl(implClass).buildChecked();
+        testRule = ctor.newInstance();
+      } catch (NoSuchMethodException e) {
+        throw new IllegalArgumentException(String.format(
+            "Cannot initialize AliyunOSSTestRule, missing no-arg constructor: 
%s", implClass), e);
+      } catch (ClassCastException e) {
+        throw new IllegalArgumentException(
+            String.format("Cannot initialize AliyunOSSTestRule, %s does not 
implement it.", implClass), e);
+      }
+    } else {
+      testRule = AliyunOSSMockRule.builder().silent().build();

Review comment:
       Nit:  It's good to have a log message to indicate that we are using the 
default AliyunOSSMockRule.

##########
File path: 
aliyun/src/test/java/org/apache/iceberg/aliyun/oss/AliyunOSSTestUtility.java
##########
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.iceberg.aliyun.oss;
+
+import org.apache.iceberg.aliyun.oss.mock.AliyunOSSMockRule;
+import org.apache.iceberg.common.DynConstructors;
+import org.apache.iceberg.relocated.com.google.common.base.Strings;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class AliyunOSSTestUtility {
+  private static final Logger LOG = 
LoggerFactory.getLogger(AliyunOSSTestUtility.class);
+  private static final String ALIYUN_OSS_TEST_RULE_CLASS = 
"ALIYUN_OSS_TEST_RULE_CLASS";
+
+  private AliyunOSSTestUtility() {
+  }
+
+  public static AliyunOSSTestRule initialize() {
+    String implClass = System.getenv(ALIYUN_OSS_TEST_RULE_CLASS);
+    AliyunOSSTestRule testRule;
+
+    if (!Strings.isNullOrEmpty(implClass)) {
+      DynConstructors.Ctor<AliyunOSSTestRule> ctor;

Review comment:
       Nit:  Looks like this line don't have to be a separate one,  I think it 
can be moved to the line 43 because I don't see other place are referencing it 
except the `try{}` block.

##########
File path: 
aliyun/src/test/java/org/apache/iceberg/aliyun/oss/AliyunOSSTestUtility.java
##########
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.iceberg.aliyun.oss;
+
+import org.apache.iceberg.aliyun.oss.mock.AliyunOSSMockRule;
+import org.apache.iceberg.common.DynConstructors;
+import org.apache.iceberg.relocated.com.google.common.base.Strings;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class AliyunOSSTestUtility {
+  private static final Logger LOG = 
LoggerFactory.getLogger(AliyunOSSTestUtility.class);
+  private static final String ALIYUN_TEST_OSS_TEST_RULE_CLASS = 
"ALIYUN_TEST_OSS_TEST_RULE_CLASS";
+
+  private AliyunOSSTestUtility() {
+  }
+
+  public static AliyunOSSTestRule initialize() {
+    AliyunOSSTestRule testRule;
+
+    String implClass = System.getenv(ALIYUN_TEST_OSS_TEST_RULE_CLASS);
+    if (!Strings.isNullOrEmpty(implClass)) {
+      LOG.info("The initializing AliyunOSSTestRule implementation is: {}", 
implClass);
+      try {
+        DynConstructors.Ctor<AliyunOSSTestRule> ctor;
+        ctor = 
DynConstructors.builder(AliyunOSSTestRule.class).impl(implClass).buildChecked();

Review comment:
       Nit:  This can be merged into one line: 
   
   ```java
           DynConstructors.Ctor<AliyunOSSTestRule> ctor =
               
DynConstructors.builder(AliyunOSSTestRule.class).impl(implClass).buildChecked();
   ```




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