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package parallelai.spyglass.hbase.example
import org.apache.hadoop.conf.Configuration
import org.apache.hadoop.hbase._
import org.apache.hadoop.hbase.client.HBaseAdmin
import org.apache.hadoop.hbase.client.HTable
import org.apache.hadoop.hbase.client.Put
import org.apache.hadoop.hbase.client.Scan
import org.apache.hadoop.hbase.util.Bytes
import junit.framework.Assert
import org.junit.runner.RunWith
import org.scalatest.WordSpecLike
import org.scalatest.MustMatchers
import org.scalatest.junit.JUnitRunner
import org.slf4j.LoggerFactory
/**
* Generates TWO tables in HBase 'TABLE_01' and 'TABLE_02', populate with some data
* and perform a number of tests
*
* @author Antwnis@gmail.com
*/
@RunWith(classOf[JUnitRunner])
class HBaseReadTest extends MustMatchers with WordSpecLike {
val QUORUM = "localhost"
val QUORUM_PORT = "2181"
val STARTING_TIMESTAMP = 1260000000000L
val log = LoggerFactory.getLogger(this.getClass.getName)
var config:Configuration = HBaseConfiguration.create
config.set("hbase.zookeeper.quorum", QUORUM)
config.set("hbase.zookeeper.property.clientPort", QUORUM_PORT)
log.info("Connecting to Zookeeper {}:{}", QUORUM, QUORUM_PORT)
"An HBase integration test" must {
"generate 2 testing HBase tables" in {
val testingTables = List("TABLE_01", "TABLE_02")
try {
testingTables.foreach(deleteTestTable(_,config))
testingTables.foreach(createTestTable(_,config))
testingTables.foreach(populateTestTable(_,config))
testingTables.foreach(printHTable(_,config))
// If we've reached here - the testing data are in
Assert.assertEquals("true", "true")
} catch {
case e: Exception =>
log.error("EXCEPTION ===> {}", e.toString())
}
}
"perform a SCAN_ALL in an HBase table" in {
}
"perform a SCAN_RANGE in an HBase table" in {
}
"perform a GET_LIST in an HBase table" in {
}
}
/**
* Method to disable and delete HBase Tables i.e. "int-test-01"
*/
private def deleteTestTable(tableName: String, config: Configuration ) = {
val hbaseAdmin = new HBaseAdmin(config)
if (hbaseAdmin.tableExists(tableName)) {
log.info("Table: " + tableName + " exists.")
hbaseAdmin.disableTable(tableName)
hbaseAdmin.deleteTable(tableName)
log.info("Table: " + tableName + " disabled and deleted.")
} else {
log.info("Table: " + tableName + " does not exist.")
}
hbaseAdmin.close()
}
def createTestTable(tableName: String, config: Configuration) = {
val hbase = new HBaseAdmin(config)
// Get and set the name of the new table
val newTable = new HTableDescriptor(tableName)
val meta = new HColumnDescriptor("data")
.setMaxVersions(3)
.setInMemory(HColumnDescriptor.DEFAULT_IN_MEMORY)
.setBlockCacheEnabled(HColumnDescriptor.DEFAULT_BLOCKCACHE)
.setTimeToLive(HColumnDescriptor.DEFAULT_TTL)
newTable.addFamily(meta)
try {
log.info("Creating table " + tableName)
hbase.createTable(newTable)
} catch {
case et: TableExistsException =>
log.error("TableExistsException for table: {} ",tableName)
log.debug(et.toString())
case e: Exception =>
log.error("IOException: " + e.toString)
}
hbase.close
}
private def populateTestTable(testingTable: String, config: Configuration) = {
// Load up HBase table
val table = new HTable(config, testingTable)
log.info("Populating table: " + testingTable)
// Table_01
if (testingTable == "TABLE_01") {
val put1 = new Put("2000-01-01 10:00:10".getBytes()).add("data".getBytes(), "column1".getBytes(), STARTING_TIMESTAMP, "1".getBytes())
val put2 = new Put("2000-01-01 10:05:00".getBytes()).add("data".getBytes(), "column1".getBytes(), STARTING_TIMESTAMP, "2".getBytes())
val put3 = new Put("2000-01-01 10:10:00".getBytes()).add("data".getBytes(), "column1".getBytes(), STARTING_TIMESTAMP, "3".getBytes())
table.put(put1)
table.put(put2)
table.put(put3)
} else
// Table_02
if (testingTable == "TABLE_02") {
// 3 versions at 10 o'clock
val k1 = "2000-01-01 10:00:00".getBytes()
val put1 = new Put(k1).add("data".getBytes(), "column1".getBytes(), STARTING_TIMESTAMP, "1".getBytes())
val put2 = new Put(k1).add("data".getBytes(), "column1".getBytes(), STARTING_TIMESTAMP + 1000L, "2".getBytes())
val put3 = new Put(k1).add("data".getBytes(), "column1".getBytes(), STARTING_TIMESTAMP + 2000L, "3".getBytes())
// 3 versions at 11 o'clock
val k2 = "2000-01-01 11:00:00".getBytes()
val put4 = new Put(k2).add("data".getBytes(), "column1".getBytes(), STARTING_TIMESTAMP, "4".getBytes())
val put5 = new Put(k2).add("data".getBytes(), "column1".getBytes(), STARTING_TIMESTAMP + 1000L, "5".getBytes())
val put6 = new Put(k2).add("data".getBytes(), "column1".getBytes(), STARTING_TIMESTAMP + 2000L, "6".getBytes())
import scala.collection.JavaConverters._
table.put(List(put1, put2, put3, put4, put5, put6).asJava)
}
table.close
}
/**
* Method to print-out an HTable
*/
private def printHTable(testingTable: String, config: Configuration) = {
val table = new HTable(config, testingTable)
val scanner = table.getScanner(new Scan())
log.info("Printing HTable: " + Bytes.toString(table.getTableName()))
try {
// Iterate results
// for (Result rr = scanner.next() rr != null rr = scanner.next()) {
while (scanner.iterator().hasNext) {
val rr = scanner.iterator().next
val key = Bytes.toString(rr.getRow())
var iter = rr.list().iterator()
var header = "Key:\t"
var data = key + "\t"
while (iter.hasNext()) {
val kv = iter.next()
header += Bytes.toString(CellUtil.cloneFamily(kv)) + ":" + Bytes.toString(CellUtil.cloneQualifier(kv)) + "\t"
data += Bytes.toString(CellUtil.cloneValue(kv)) + "\t"
}
log.info(header)
log.info(data)
}
} finally {
// Close scanners when done
scanner.close
table.close
}
}
}
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