| /* |
| * 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.accumulo.examples.simple.client; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map.Entry; |
| import java.util.Random; |
| import java.util.Set; |
| |
| import org.apache.accumulo.core.cli.BatchWriterOpts; |
| import org.apache.accumulo.core.cli.ClientOnRequiredTable; |
| import org.apache.accumulo.core.client.AccumuloException; |
| import org.apache.accumulo.core.client.AccumuloSecurityException; |
| import org.apache.accumulo.core.client.BatchWriter; |
| import org.apache.accumulo.core.client.Connector; |
| import org.apache.accumulo.core.client.MutationsRejectedException; |
| import org.apache.accumulo.core.client.TableNotFoundException; |
| import org.apache.accumulo.core.client.security.SecurityErrorCode; |
| import org.apache.accumulo.core.data.Mutation; |
| import org.apache.accumulo.core.data.TabletId; |
| import org.apache.accumulo.core.data.Value; |
| import org.apache.accumulo.core.security.ColumnVisibility; |
| import org.apache.hadoop.io.Text; |
| |
| import com.beust.jcommander.Parameter; |
| |
| /** |
| * Simple example for writing random data to Accumulo. See docs/examples/README.batch for instructions. |
| * |
| * The rows of the entries will be randomly generated numbers between a specified min and max (prefixed by "row_"). The column families will be "foo" and column |
| * qualifiers will be "1". The values will be random byte arrays of a specified size. |
| */ |
| public class RandomBatchWriter { |
| |
| /** |
| * Creates a random byte array of specified size using the specified seed. |
| * |
| * @param rowid |
| * the seed to use for the random number generator |
| * @param dataSize |
| * the size of the array |
| * @return a random byte array |
| */ |
| public static byte[] createValue(long rowid, int dataSize) { |
| Random r = new Random(rowid); |
| byte value[] = new byte[dataSize]; |
| |
| r.nextBytes(value); |
| |
| // transform to printable chars |
| for (int j = 0; j < value.length; j++) { |
| value[j] = (byte) (((0xff & value[j]) % 92) + ' '); |
| } |
| |
| return value; |
| } |
| |
| /** |
| * Creates a mutation on a specified row with column family "foo", column qualifier "1", specified visibility, and a random value of specified size. |
| * |
| * @param rowid |
| * the row of the mutation |
| * @param dataSize |
| * the size of the random value |
| * @param visibility |
| * the visibility of the entry to insert |
| * @return a mutation |
| */ |
| public static Mutation createMutation(long rowid, int dataSize, ColumnVisibility visibility) { |
| Text row = new Text(String.format("row_%010d", rowid)); |
| |
| Mutation m = new Mutation(row); |
| |
| // create a random value that is a function of the |
| // row id for verification purposes |
| byte value[] = createValue(rowid, dataSize); |
| |
| m.put(new Text("foo"), new Text("1"), visibility, new Value(value)); |
| |
| return m; |
| } |
| |
| static class Opts extends ClientOnRequiredTable { |
| @Parameter(names = "--num", required = true) |
| int num = 0; |
| @Parameter(names = "--min") |
| long min = 0; |
| @Parameter(names = "--max") |
| long max = Long.MAX_VALUE; |
| @Parameter(names = "--size", required = true, description = "size of the value to write") |
| int size = 0; |
| @Parameter(names = "--vis", converter = VisibilityConverter.class) |
| ColumnVisibility visiblity = new ColumnVisibility(""); |
| @Parameter(names = "--seed", description = "seed for pseudo-random number generator") |
| Long seed = null; |
| } |
| |
| public static long abs(long l) { |
| l = Math.abs(l); // abs(Long.MIN_VALUE) == Long.MIN_VALUE... |
| if (l < 0) |
| return 0; |
| return l; |
| } |
| |
| /** |
| * Writes a specified number of entries to Accumulo using a {@link BatchWriter}. |
| */ |
| public static void main(String[] args) throws AccumuloException, AccumuloSecurityException, TableNotFoundException { |
| Opts opts = new Opts(); |
| BatchWriterOpts bwOpts = new BatchWriterOpts(); |
| opts.parseArgs(RandomBatchWriter.class.getName(), args, bwOpts); |
| if ((opts.max - opts.min) < 1L * opts.num) { // right-side multiplied by 1L to convert to long in a way that doesn't trigger FindBugs |
| System.err.println(String.format("You must specify a min and a max that allow for at least num possible values. " |
| + "For example, you requested %d rows, but a min of %d and a max of %d (exclusive), which only allows for %d rows.", opts.num, opts.min, opts.max, |
| (opts.max - opts.min))); |
| System.exit(1); |
| } |
| Random r; |
| if (opts.seed == null) |
| r = new Random(); |
| else { |
| r = new Random(opts.seed); |
| } |
| Connector connector = opts.getConnector(); |
| BatchWriter bw = connector.createBatchWriter(opts.getTableName(), bwOpts.getBatchWriterConfig()); |
| |
| // reuse the ColumnVisibility object to improve performance |
| ColumnVisibility cv = opts.visiblity; |
| |
| // Generate num unique row ids in the given range |
| HashSet<Long> rowids = new HashSet<>(opts.num); |
| while (rowids.size() < opts.num) { |
| rowids.add((abs(r.nextLong()) % (opts.max - opts.min)) + opts.min); |
| } |
| for (long rowid : rowids) { |
| Mutation m = createMutation(rowid, opts.size, cv); |
| bw.addMutation(m); |
| } |
| |
| try { |
| bw.close(); |
| } catch (MutationsRejectedException e) { |
| if (e.getSecurityErrorCodes().size() > 0) { |
| HashMap<String,Set<SecurityErrorCode>> tables = new HashMap<>(); |
| for (Entry<TabletId,Set<SecurityErrorCode>> ke : e.getSecurityErrorCodes().entrySet()) { |
| String tableId = ke.getKey().getTableId().toString(); |
| Set<SecurityErrorCode> secCodes = tables.get(tableId); |
| if (secCodes == null) { |
| secCodes = new HashSet<>(); |
| tables.put(tableId, secCodes); |
| } |
| secCodes.addAll(ke.getValue()); |
| } |
| System.err.println("ERROR : Not authorized to write to tables : " + tables); |
| } |
| |
| if (e.getConstraintViolationSummaries().size() > 0) { |
| System.err.println("ERROR : Constraint violations occurred : " + e.getConstraintViolationSummaries()); |
| } |
| System.exit(1); |
| } |
| } |
| } |