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HBASE-3120 [rest] Content transcoding 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1029899 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andrew Kyle Purtell 2010-11-02 00:00:32 +00:00
parent 81d0a68a2c
commit a2de4f359a
11 changed files with 488 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
CHANGES.txt
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@ -1082,7 +1082,7 @@ Release 0.21.0 - Unreleased
HBASE-3154 HBase RPC should support timeout (Hairong via jgray)
HBASE-3184 Xmx setting in pom to use for tests/surefire does not appear
to work
HBASE-3120 [rest] Content transcoding
NEW FEATURES
HBASE-1961 HBase EC2 scripts

13
src/main/java/org/apache/hadoop/hbase/rest/ExistsResource.java
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@ -31,8 +31,6 @@ import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.core.Response.ResponseBuilder;
import org.apache.hadoop.hbase.client.HBaseAdmin;
public class ExistsResource extends ResourceBase {
static CacheControl cacheControl;
@ -42,16 +40,16 @@ public class ExistsResource extends ResourceBase {
cacheControl.setNoTransform(false);
}
String tableName;
TableResource tableResource;
/**
* Constructor
* @param table
* @param tableResource
* @throws IOException
*/
public ExistsResource(String table) throws IOException {
public ExistsResource(TableResource tableResource) throws IOException {
super();
this.tableName = table;
this.tableResource = tableResource;
}
@GET
@ -59,8 +57,7 @@ public class ExistsResource extends ResourceBase {
MIMETYPE_BINARY})
public Response get(final @Context UriInfo uriInfo) {
try {
HBaseAdmin admin = new HBaseAdmin(servlet.getConfiguration());
if (!admin.tableExists(tableName)) {
if (!tableResource.exists()) {
throw new WebApplicationException(Response.Status.NOT_FOUND);
}
} catch (IOException e) {

14
src/main/java/org/apache/hadoop/hbase/rest/RegionsResource.java
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@ -55,17 +55,22 @@ public class RegionsResource extends ResourceBase {
cacheControl.setNoTransform(false);
}
String tableName;
TableResource tableResource;
public RegionsResource(String table) throws IOException {
/**
* Constructor
* @param tableResource
* @throws IOException
*/
public RegionsResource(TableResource tableResource) throws IOException {
super();
this.tableName = table;
this.tableResource = tableResource;
}
private Map<HRegionInfo,HServerAddress> getTableRegions()
throws IOException {
HTablePool pool = servlet.getTablePool();
HTableInterface table = pool.getTable(tableName);
HTableInterface table = pool.getTable(tableResource.getName());
try {
return ((HTable)table).getRegionsInfo();
} finally {
@ -81,6 +86,7 @@ public class RegionsResource extends ResourceBase {
}
servlet.getMetrics().incrementRequests(1);
try {
String tableName = tableResource.getName();
TableInfoModel model = new TableInfoModel(tableName);
Map<HRegionInfo,HServerAddress> regions = getTableRegions();
for (Map.Entry<HRegionInfo,HServerAddress> e: regions.entrySet()) {

56
src/main/java/org/apache/hadoop/hbase/rest/RowResource.java
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@ -48,30 +48,27 @@ import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.rest.model.CellModel;
import org.apache.hadoop.hbase.rest.model.CellSetModel;
import org.apache.hadoop.hbase.rest.model.RowModel;
import org.apache.hadoop.hbase.rest.transform.Transform;
import org.apache.hadoop.hbase.util.Bytes;
public class RowResource extends ResourceBase {
private static final Log LOG = LogFactory.getLog(RowResource.class);
String tableName;
TableResource tableResource;
RowSpec rowspec;
/**
* Constructor
* @param table
* @param tableResource
* @param rowspec
* @param versions
* @throws IOException
*/
public RowResource(String table, String rowspec, String versions)
throws IOException {
public RowResource(TableResource tableResource, String rowspec,
String versions) throws IOException {
super();
this.tableName = table;
this.tableResource = tableResource;
this.rowspec = new RowSpec(rowspec);
if (LOG.isDebugEnabled()) {
LOG.debug("new RowResource: table=" + this.tableName + "rowspec=" +
this.rowspec);
}
if (versions != null) {
this.rowspec.setMaxVersions(Integer.valueOf(versions));
}
@ -86,7 +83,7 @@ public class RowResource extends ResourceBase {
servlet.getMetrics().incrementRequests(1);
try {
ResultGenerator generator =
ResultGenerator.fromRowSpec(tableName, rowspec, null);
ResultGenerator.fromRowSpec(tableResource.getName(), rowspec, null);
if (!generator.hasNext()) {
throw new WebApplicationException(Response.Status.NOT_FOUND);
}
@ -101,9 +98,12 @@ public class RowResource extends ResourceBase {
rowKey = value.getRow();
rowModel = new RowModel(rowKey);
}
rowModel.addCell(
new CellModel(value.getFamily(), value.getQualifier(),
value.getTimestamp(), value.getValue()));
byte[] family = value.getFamily();
byte[] qualifier = value.getQualifier();
byte[] data = tableResource.transform(family, qualifier,
value.getValue(), Transform.Direction.OUT);
rowModel.addCell(new CellModel(family, qualifier,
value.getTimestamp(), data));
if (++count > rowspec.getMaxValues()) {
break;
}
@ -131,12 +131,16 @@ public class RowResource extends ResourceBase {
}
try {
ResultGenerator generator =
ResultGenerator.fromRowSpec(tableName, rowspec, null);
ResultGenerator.fromRowSpec(tableResource.getName(), rowspec, null);
if (!generator.hasNext()) {
throw new WebApplicationException(Response.Status.NOT_FOUND);
}
KeyValue value = generator.next();
ResponseBuilder response = Response.ok(value.getValue());
byte[] family = value.getFamily();
byte[] qualifier = value.getQualifier();
byte[] data = tableResource.transform(family, qualifier,
value.getValue(), Transform.Direction.OUT);
ResponseBuilder response = Response.ok(data);
response.header("X-Timestamp", value.getTimestamp());
return response.build();
} catch (IOException e) {
@ -151,7 +155,7 @@ public class RowResource extends ResourceBase {
HTableInterface table = null;
try {
List<RowModel> rows = model.getRows();
table = pool.getTable(tableName);
table = pool.getTable(tableResource.getName());
((HTable)table).setAutoFlush(false);
for (RowModel row: rows) {
byte[] key = row.getKey();
@ -159,9 +163,13 @@ public class RowResource extends ResourceBase {
for (CellModel cell: row.getCells()) {
byte [][] parts = KeyValue.parseColumn(cell.getColumn());
if (parts.length == 2 && parts[1].length > 0) {
put.add(parts[0], parts[1], cell.getTimestamp(), cell.getValue());
put.add(parts[0], parts[1], cell.getTimestamp(),
tableResource.transform(parts[0], parts[1], cell.getValue(),
Transform.Direction.IN));
} else {
put.add(parts[0], null, cell.getTimestamp(), cell.getValue());
put.add(parts[0], null, cell.getTimestamp(),
tableResource.transform(parts[0], null, cell.getValue(),
Transform.Direction.IN));
}
}
table.put(put);
@ -215,11 +223,15 @@ public class RowResource extends ResourceBase {
Put put = new Put(row);
byte parts[][] = KeyValue.parseColumn(column);
if (parts.length == 2 && parts[1].length > 0) {
put.add(parts[0], parts[1], timestamp, message);
put.add(parts[0], parts[1], timestamp,
tableResource.transform(parts[0], parts[1], message,
Transform.Direction.IN));
} else {
put.add(parts[0], null, timestamp, message);
put.add(parts[0], null, timestamp,
tableResource.transform(parts[0], null, message,
Transform.Direction.IN));
}
table = pool.getTable(tableName);
table = pool.getTable(tableResource.getName());
table.put(put);
if (LOG.isDebugEnabled()) {
LOG.debug("PUT " + put.toString());
@ -306,7 +318,7 @@ public class RowResource extends ResourceBase {
HTablePool pool = servlet.getTablePool();
HTableInterface table = null;
try {
table = pool.getTable(tableName);
table = pool.getTable(tableResource.getName());
table.delete(delete);
if (LOG.isDebugEnabled()) {
LOG.debug("DELETE " + delete.toString());

9
src/main/java/org/apache/hadoop/hbase/rest/ScannerResource.java
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@ -51,16 +51,16 @@ public class ScannerResource extends ResourceBase {
static final Map<String,ScannerInstanceResource> scanners =
Collections.synchronizedMap(new HashMap<String,ScannerInstanceResource>());
String tableName;
TableResource tableResource;
/**
* Constructor
* @param table
* @param tableResource
* @throws IOException
*/
public ScannerResource(String table) throws IOException {
public ScannerResource(TableResource tableResource)throws IOException {
super();
this.tableName = table;
this.tableResource = tableResource;
}
static void delete(final String id) {
@ -78,6 +78,7 @@ public class ScannerResource extends ResourceBase {
model.getColumns(), model.getStartTime(), model.getEndTime(), 1);
try {
Filter filter = ScannerResultGenerator.buildFilterFromModel(model);
String tableName = tableResource.getName();
ScannerResultGenerator gen =
new ScannerResultGenerator(tableName, spec, filter);
String id = gen.getID();

18
src/main/java/org/apache/hadoop/hbase/rest/SchemaResource.java
View File

@ -62,22 +62,22 @@ public class SchemaResource extends ResourceBase {
cacheControl.setNoTransform(false);
}
String tableName;
TableResource tableResource;
/**
* Constructor
* @param table
* @param tableResource
* @throws IOException
*/
public SchemaResource(String table) throws IOException {
public SchemaResource(TableResource tableResource) throws IOException {
super();
this.tableName = table;
this.tableResource = tableResource;
}
private HTableDescriptor getTableSchema() throws IOException,
TableNotFoundException {
HTablePool pool = servlet.getTablePool();
HTableInterface table = pool.getTable(tableName);
HTableInterface table = pool.getTable(tableResource.getName());
try {
return table.getTableDescriptor();
} finally {
@ -157,7 +157,7 @@ public class SchemaResource extends ResourceBase {
throw new WebApplicationException(e,
Response.Status.INTERNAL_SERVER_ERROR);
} finally {
admin.enableTable(tableName);
admin.enableTable(tableResource.getName());
}
return Response.ok().build();
} catch (IOException e) {
@ -169,7 +169,7 @@ public class SchemaResource extends ResourceBase {
private Response update(final TableSchemaModel model, final boolean replace,
final UriInfo uriInfo) {
try {
byte[] name = Bytes.toBytes(tableName);
byte[] name = Bytes.toBytes(tableResource.getName());
HBaseAdmin admin = new HBaseAdmin(servlet.getConfiguration());
if (replace || !admin.tableExists(name)) {
return replace(name, model, uriInfo, admin);
@ -214,7 +214,7 @@ public class SchemaResource extends ResourceBase {
HBaseAdmin admin = new HBaseAdmin(servlet.getConfiguration());
boolean success = false;
for (int i = 0; i < 10; i++) try {
admin.disableTable(tableName);
admin.disableTable(tableResource.getName());
success = true;
break;
} catch (IOException e) {
@ -222,7 +222,7 @@ public class SchemaResource extends ResourceBase {
if (!success) {
throw new IOException("could not disable table");
}
admin.deleteTable(tableName);
admin.deleteTable(tableResource.getName());
return Response.ok().build();
} catch (TableNotFoundException e) {
throw new WebApplicationException(Response.Status.NOT_FOUND);

213
src/main/java/org/apache/hadoop/hbase/rest/TableResource.java
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@ -21,16 +21,171 @@
package org.apache.hadoop.hbase.rest;
import java.io.IOException;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentSkipListMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.ws.rs.Encoded;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.QueryParam;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.rest.transform.NullTransform;
import org.apache.hadoop.hbase.rest.transform.Transform;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.util.StringUtils;
public class TableResource extends ResourceBase {
private static final Log LOG = LogFactory.getLog(TableResource.class);
/**
* HCD attributes starting with this string are considered transform
* directives
*/
private static final String DIRECTIVE_KEY = "Transform$";
/**
* Transform directives are of the form <tt>&lt;qualifier&gt;:&lt;class&gt;</tt>
* where <tt>qualifier</tt> is a string for exact matching or '*' as a wildcard
* that will match anything; and <tt>class</tt> is either the fully qualified
* class name of a transform implementation or can be the short name of a
* transform in the <tt>org.apache.hadoop.hbase.rest.transform package</tt>.
*/
private static final Pattern DIRECTIVE_PATTERN =
Pattern.compile("([^\\:]+)\\:([^\\,]+)\\,?");
private static final Transform defaultTransform = new NullTransform();
private static final
Map<String,Map<byte[],Map<byte[],Transform>>> transformMap =
new ConcurrentHashMap<String,Map<byte[],Map<byte[],Transform>>>();
private static final Map<String,Long> lastCheckedMap =
new ConcurrentHashMap<String,Long>();
/**
* @param table the table
* @param family the column family
* @param qualifier the column qualifier, or null
* @return the transformation specified for the given family or qualifier, if
* any, otherwise the default
*/
static Transform getTransform(String table, byte[] family, byte[] qualifier) {
if (qualifier == null) {
qualifier = HConstants.EMPTY_BYTE_ARRAY;
}
Map<byte[],Map<byte[],Transform>> familyMap = transformMap.get(table);
if (familyMap != null) {
Map<byte[],Transform> columnMap = familyMap.get(family);
if (columnMap != null) {
Transform t = columnMap.get(qualifier);
// check as necessary if there is a wildcard entry
if (t == null) {
t = columnMap.get(HConstants.EMPTY_BYTE_ARRAY);
}
// if we found something, return it, otherwise we will return the
// default by falling through
if (t != null) {
return t;
}
}
}
return defaultTransform;
}
synchronized static void setTransform(String table, byte[] family,
byte[] qualifier, Transform transform) {
Map<byte[],Map<byte[],Transform>> familyMap = transformMap.get(table);
if (familyMap == null) {
familyMap = new ConcurrentSkipListMap<byte[],Map<byte[],Transform>>(
Bytes.BYTES_COMPARATOR);
transformMap.put(table, familyMap);
}
Map<byte[],Transform> columnMap = familyMap.get(family);
if (columnMap == null) {
columnMap = new ConcurrentSkipListMap<byte[],Transform>(
Bytes.BYTES_COMPARATOR);
familyMap.put(family, columnMap);
}
// if transform is null, remove any existing entry
if (transform != null) {
columnMap.put(qualifier, transform);
} else {
columnMap.remove(qualifier);
}
}
String table;
/**
* Scan the table schema for transform directives. These are column family
* attributes containing a comma-separated list of elements of the form
* <tt>&lt;qualifier&gt;:&lt;transform-class&gt;</tt>, where qualifier
* can be a string for exact matching or '*' as a wildcard to match anything.
* The attribute key must begin with the string "Transform$".
*/
void scanTransformAttrs() throws IOException {
HBaseAdmin admin = new HBaseAdmin(servlet.getConfiguration());
HTableDescriptor htd = admin.getTableDescriptor(Bytes.toBytes(table));
for (HColumnDescriptor hcd: htd.getFamilies()) {
for (Map.Entry<ImmutableBytesWritable, ImmutableBytesWritable> e:
hcd.getValues().entrySet()) {
// does the key start with the transform directive tag?
String key = Bytes.toString(e.getKey().get());
if (!key.startsWith(DIRECTIVE_KEY)) {
// no, skip
continue;
}
// match a comma separated list of one or more directives
byte[] value = e.getValue().get();
Matcher m = DIRECTIVE_PATTERN.matcher(Bytes.toString(value));
while (m.find()) {
byte[] qualifier = HConstants.EMPTY_BYTE_ARRAY;
String s = m.group(1);
if (s.length() > 0 && !s.equals("*")) {
qualifier = Bytes.toBytes(s);
}
boolean retry = false;
String className = m.group(2);
while (true) {
try {
// if a transform was previously configured for the qualifier,
// this will simply replace it
setTransform(table, hcd.getName(), qualifier,
(Transform)Class.forName(className).newInstance());
break;
} catch (InstantiationException ex) {
LOG.error(StringUtils.stringifyException(ex));
if (retry) {
break;
}
retry = true;
} catch (IllegalAccessException ex) {
LOG.error(StringUtils.stringifyException(ex));
if (retry) {
break;
}
retry = true;
} catch (ClassNotFoundException ex) {
if (retry) {
LOG.error(StringUtils.stringifyException(ex));
break;
}
className = "org.apache.hadoop.hbase.rest.transform." + className;
retry = true;
}
}
}
}
}
}
/**
* Constructor
* @param table
@ -39,26 +194,74 @@ public class TableResource extends ResourceBase {
public TableResource(String table) throws IOException {
super();
this.table = table;
// Scanning the table schema is too expensive to do for every operation.
// Do it once per minute by default.
// Setting hbase.rest.transform.check.interval to <= 0 disables rescanning.
long now = System.currentTimeMillis();
Long lastChecked = lastCheckedMap.get(table);
if (lastChecked != null) {
long interval = servlet.getConfiguration()
.getLong("hbase.rest.transform.check.interval", 60000);
if (interval > 0 && (now - lastChecked.longValue()) > interval) {
scanTransformAttrs();
lastCheckedMap.put(table, now);
}
} else {
scanTransformAttrs();
lastCheckedMap.put(table, now);
}
}
/** @return the table name */
String getName() {
return table;
}
/**
* @return true if the table exists
* @throws IOException
*/
boolean exists() throws IOException {
HBaseAdmin admin = new HBaseAdmin(servlet.getConfiguration());
return admin.tableExists(table);
}
/**
* Apply any configured transformations to the value
* @param family
* @param qualifier
* @param value
* @param direction
* @return
* @throws IOException
*/
byte[] transform(byte[] family, byte[] qualifier, byte[] value,
Transform.Direction direction) throws IOException {
Transform t = getTransform(table, family, qualifier);
if (t != null) {
return t.transform(value, direction);
}
return value;
}
@Path("exists")
public ExistsResource getExistsResource() throws IOException {
return new ExistsResource(table);
return new ExistsResource(this);
}
@Path("regions")
public RegionsResource getRegionsResource() throws IOException {
return new RegionsResource(table);
return new RegionsResource(this);
}
@Path("scanner")
public ScannerResource getScannerResource() throws IOException {
return new ScannerResource(table);
return new ScannerResource(this);
}
@Path("schema")
public SchemaResource getSchemaResource() throws IOException {
return new SchemaResource(table);
return new SchemaResource(this);
}
@Path("{rowspec: .+}")
@ -67,6 +270,6 @@ public class TableResource extends ResourceBase {
// the RowSpec constructor has a chance to parse
final @PathParam("rowspec") @Encoded String rowspec,
final @QueryParam("v") String versions) throws IOException {
return new RowResource(table, rowspec, versions);
return new RowResource(this, rowspec, versions);
}
}

35
src/main/java/org/apache/hadoop/hbase/rest/transform/Base64.java Normal file
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@ -0,0 +1,35 @@
/*
* Copyright 2010 The Apache Software Foundation
*
* 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.hadoop.hbase.rest.transform;
public class Base64 implements Transform {
@Override
public byte[] transform(byte[] data, Direction direction) {
switch (direction) {
case IN:
return com.sun.jersey.core.util.Base64.encode(data);
case OUT:
return com.sun.jersey.core.util.Base64.decode(data);
default:
throw new RuntimeException("illegal direction");
}
}
}

28
src/main/java/org/apache/hadoop/hbase/rest/transform/NullTransform.java Normal file
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@ -0,0 +1,28 @@
/*
* Copyright 2010 The Apache Software Foundation
*
* 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.hadoop.hbase.rest.transform;
public class NullTransform implements Transform {
@Override
public byte[] transform(byte[] data, Direction direction) {
return data;
}
}

44
src/main/java/org/apache/hadoop/hbase/rest/transform/Transform.java Normal file
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@ -0,0 +1,44 @@
/*
* Copyright 2010 The Apache Software Foundation
*
* 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.hadoop.hbase.rest.transform;
/**
* Data transformation module
*/
public interface Transform {
/*** Transfer direction */
static enum Direction {
/** From client to server */
IN,
/** From server to client */
OUT
};
/**
* Transform data from one representation to another according to
* transfer direction.
* @param in input data
* @param direction IN or OUT
* @return the transformed data
*/
byte[] transform (byte[] data, Direction direction);
}

104
src/test/java/org/apache/hadoop/hbase/rest/TestTransform.java Normal file
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@ -0,0 +1,104 @@
/*
* Copyright 2010 The Apache Software Foundation
*
* 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.hadoop.hbase.rest;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.rest.client.Client;
import org.apache.hadoop.hbase.rest.client.Cluster;
import org.apache.hadoop.hbase.rest.client.Response;
import org.apache.hadoop.hbase.util.Bytes;
public class TestTransform extends HBaseRESTClusterTestBase {
static final String TABLE = "TestTransform";
static final String CFA = "a";
static final String CFB = "b";
static final String COLUMN_1 = CFA + ":1";
static final String COLUMN_2 = CFB + ":2";
static final String ROW_1 = "testrow1";
static final byte[] VALUE_1 = Bytes.toBytes("testvalue1");
static final byte[] VALUE_2 = Bytes.toBytes("testvalue2");
static final byte[] VALUE_2_BASE64 = Bytes.toBytes("dGVzdHZhbHVlMg==");
Client client;
HBaseAdmin admin;
@Override
protected void setUp() throws Exception {
super.setUp();
client = new Client(new Cluster().add("localhost", testServletPort));
admin = new HBaseAdmin(conf);
if (admin.tableExists(TABLE)) {
return;
}
HTableDescriptor htd = new HTableDescriptor(TABLE);
htd.addFamily(new HColumnDescriptor(CFA));
HColumnDescriptor cfB = new HColumnDescriptor(CFB);
cfB.setValue("Transform$1", "*:Base64");
htd.addFamily(cfB);
admin.createTable(htd);
}
@Override
protected void tearDown() throws Exception {
client.shutdown();
super.tearDown();
}
public void testTransform() throws Exception {
String path1 = "/" + TABLE + "/" + ROW_1 + "/" + COLUMN_1;
String path2 = "/" + TABLE + "/" + ROW_1 + "/" + COLUMN_2;
// store value 1
Response response = client.put(path1, MIMETYPE_BINARY, VALUE_1);
assertEquals(response.getCode(), 200);
// store value 2 (stargate should transform into base64)
response = client.put(path2, MIMETYPE_BINARY, VALUE_2);
assertEquals(response.getCode(), 200);
// get the table contents directly
HTable table = new HTable(TABLE);
Get get = new Get(Bytes.toBytes(ROW_1));
get.addFamily(Bytes.toBytes(CFA));
get.addFamily(Bytes.toBytes(CFB));
Result result = table.get(get);
// value 1 should not be transformed
byte[] value = result.getValue(Bytes.toBytes(CFA), Bytes.toBytes("1"));
assertNotNull(value);
assertTrue(Bytes.equals(value, VALUE_1));
// value 2 should have been base64 encoded
value = result.getValue(Bytes.toBytes(CFB), Bytes.toBytes("2"));
assertNotNull(value);
assertTrue(Bytes.equals(value, VALUE_2_BASE64));
table.close();
// stargate should decode the transformed value back to original bytes
response = client.get(path2, MIMETYPE_BINARY);
assertEquals(response.getCode(), 200);
value = response.getBody();
assertTrue(Bytes.equals(value, VALUE_2));
}
}