[GitHub] [incubator-hudi] bvaradar commented on a change in pull request #1532: [HUDI-794]: implemented optional use of --config-folder option in HoodieDeltaStreamer

[GitBox <gi...@apache.org>]

bvaradar commented on a change in pull request #1532:
URL: https://github.com/apache/incubator-hudi/pull/1532#discussion_r425579387



##########
File path: hudi-utilities/src/main/java/org/apache/hudi/utilities/DeltaStreamerUtility.java
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@@ -0,0 +1,128 @@
+/*
+ * 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.hudi.utilities;
+
+import org.apache.hudi.common.config.TypedProperties;
+import org.apache.hudi.common.util.StringUtils;
+import org.apache.hudi.utilities.deltastreamer.HoodieDeltaStreamer;
+import org.apache.hudi.utilities.deltastreamer.HoodieMultiTableDeltaStreamer;
+import org.apache.hudi.utilities.deltastreamer.TableExecutionContext;
+
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.FileUtil;
+import org.apache.hadoop.fs.Path;
+
+import java.io.IOException;
+import java.util.ArrayList;
+
+public class DeltaStreamerUtility {
+
+  public static String getDefaultConfigFilePath(String configFolder, String database, String currentTable) {
+    return configFolder + Constants.FILEDELIMITER + database + Constants.UNDERSCORE + currentTable + Constants.DEFAULT_CONFIG_FILE_NAME_SUFFIX;
+  }
+
+  public static String getTableWithDatabase(TableExecutionContext context) {
+    return context.getDatabase() + Constants.DELIMITER + context.getTableName();
+  }
+
+  public static void checkIfPropsFileAndConfigFolderExist(String commonPropsFile, String configFolder, FileSystem fs) throws IOException {
+    if (!fs.exists(new Path(commonPropsFile))) {
+      throw new IllegalArgumentException("Please provide valid common config file path!");
+    }
+
+    if (!fs.exists(new Path(configFolder))) {
+      fs.mkdirs(new Path(configFolder));
+    }
+  }
+
+  public static void checkIfTableConfigFileExists(String configFolder, FileSystem fs, String configFilePath) throws IOException {
+    if (!fs.exists(new Path(configFilePath)) || !fs.isFile(new Path(configFilePath))) {
+      throw new IllegalArgumentException("Please provide valid table config file path!");
+    }
+
+    Path path = new Path(configFilePath);
+    Path filePathInConfigFolder = new Path(configFolder, path.getName());
+    if (!fs.exists(filePathInConfigFolder)) {
+      FileUtil.copy(fs, path, fs, filePathInConfigFolder, false, fs.getConf());
+    }
+  }
+
+  public static TypedProperties getTablePropertiesFromConfigFolder(HoodieDeltaStreamer.Config cfg, FileSystem fs) throws IOException {

Review comment:
       @pratyakshsharma : Sorry for the delay. I think we can close this PR. As a next step towards enhancing HoodieMultiDeltaStreamer, I think we can work on feature parity with : supporting parallel deltastreamer, support for MOR and async compaction. These would make HoodieMultiDeltaStreamer a really powerful tool :)




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