Adding mock for HBaseReadTest

1 files changed, 196 insertions, 0 deletions

diff --git a/src/test/scala/parallelai/spyglass/hbase/example/HBaseReadTest.scala b/src/test/scala/parallelai/spyglass/hbase/example/HBaseReadTest.scala
new file mode 100644
index 0000000..bbecf59
--- /dev/null
+++ b/src/test/scala/parallelai/spyglass/hbase/example/HBaseReadTest.scala
@@ -0,0 +1,196 @@
+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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