[GitHub] [jackrabbit-oak] fabriziofortino commented on a diff in pull request #728: OAK-9960: (oak-run) introduced datastore-copy command

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

fabriziofortino commented on code in PR #728:
URL: https://github.com/apache/jackrabbit-oak/pull/728#discussion_r989391186


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oak-run/src/main/java/org/apache/jackrabbit/oak/run/DataStoreCopyCommand.java:
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@@ -0,0 +1,162 @@
+/*
+ * 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.jackrabbit.oak.run;
+
+import joptsimple.OptionParser;
+import joptsimple.OptionSet;
+import joptsimple.OptionSpec;
+import joptsimple.OptionSpecBuilder;
+import org.apache.jackrabbit.oak.commons.IOUtils;
+import org.apache.jackrabbit.oak.run.commons.Command;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
+import static com.google.common.base.StandardSystemProperty.FILE_SEPARATOR;
+
+/**
+ * Command to concurrently download blobs from an azure datastore using sas token authentication.
+ * <p>
+ * Blobs are stored in a specific folder following the datastore structure format.
+ */
+public class DataStoreCopyCommand implements Command {
+
+    private static final Logger LOG = LoggerFactory.getLogger(DataStoreCopyCommand.class);
+
+    private String sourceRepo;
+    private String includePath;
+    private File fileIncludePath;
+    private String sasToken;
+    private String outDir;
+    private int concurrency;
+
+    @Override
+    public void execute(String... args) throws Exception {
+        parseCommandLineParams(args);
+
+        List<String> ids;
+        if (fileIncludePath != null) {
+            if (fileIncludePath.isDirectory() || !fileIncludePath.exists()) {
+                throw new IllegalArgumentException("file-include-path must be a valid file");
+            }
+            ids = org.apache.commons.io.IOUtils.readLines(Files.newInputStream(fileIncludePath.toPath()), StandardCharsets.UTF_8);
+        } else {
+            ids = Arrays.stream(includePath.split(";")).collect(Collectors.toList());
+        }
+        if (ids.isEmpty()) {
+            throw new IllegalArgumentException("Blob ids must be specified");
+        }
+
+        try (Downloader downloader = new Downloader(concurrency)) {
+            long start = System.currentTimeMillis();
+            List<Downloader.ItemResponse> responses = downloader.download(ids.stream().map(id -> {
+                Downloader.Item item = new Downloader.Item();
+                item.source = sourceRepo + "/" + id;
+                if (sasToken != null) {
+                    item.source += "?" + sasToken;
+                }
+                // Rename the blob names to match expected datastore cache format (remove the "-" in the name)
+                String blobName = id.replaceAll("-", "");

Review Comment:
   done



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