private long calculateDataNodeCount() {
long count = 0;
for (Datacenter datacenter : datacenters) {
count += datacenter.getDataNodes().size();
}
return count;
}
private long calculateDiskCount() {
long count = 0;
for (Datacenter datacenter : datacenters) {
for (DataNode dataNode : datacenter.getDataNodes()) {
count += dataNode.getDisks().size();
}
}
return count;
}
public long calculateUnavailableDataNodeCount() {
long count = 0;
for (Datacenter datacenter : datacenters) {
for (DataNode dataNode : datacenter.getDataNodes()) {
if (dataNode.isDown()) {
count++;
}
}
}
return count;
}
/**
* Finds DataNode by hostname and port. Note that hostname is converted to canonical hostname for
* comparison.
*
* @param hostname of datanode
* @param port of datanode
* @return DataNode or null if not found.
*/
public DataNode findDataNode(String hostname, int port) {
String canonicalHostname = DataNode.getFullyQualifiedDomainName(hostname);
logger.trace("host to find host {} port {}", canonicalHostname, port);
for (Datacenter datacenter : datacenters) {
logger.trace("datacenter {}", datacenter.getName());
for (DataNode dataNode : datacenter.getDataNodes()) {
if (dataNode.getHostname().equals(canonicalHostname) && (dataNode.getPort() == port)) {
return dataNode;
}
}
}
return null;
}
private Map<HardwareState, Long> calculateDataNodeInHardStateCount() {
Map<HardwareState, Long> dataNodeInStateCount = new HashMap<HardwareState, Long>();
for (HardwareState hardwareState : HardwareState.values()) {
dataNodeInStateCount.put(hardwareState, new Long(0));
}
for (Datacenter datacenter : datacenters) {
for (DataNode dataNode : datacenter.getDataNodes()) {
dataNodeInStateCount.put(
dataNode.getState(), dataNodeInStateCount.get(dataNode.getState()) + 1);
}
}
return dataNodeInStateCount;
}
@Test
public void basics() throws JSONException {
JSONObject jsonObject = TestUtils.getJsonDatacenter("XYZ1", getDataNodes());
ClusterMapConfig clusterMapConfig =
new ClusterMapConfig(new VerifiableProperties(new Properties()));
Datacenter datacenter = new TestDatacenter(jsonObject, clusterMapConfig);
assertEquals(datacenter.getName(), "XYZ1");
assertEquals(datacenter.getDataNodes().size(), dataNodeCount);
assertEquals(
datacenter.getRawCapacityInBytes(), dataNodeCount * diskCount * diskCapacityInBytes);
assertFalse(datacenter.isRackAware());
assertEquals(datacenter.toJSONObject().toString(), jsonObject.toString());
assertEquals(datacenter, new TestDatacenter(datacenter.toJSONObject(), clusterMapConfig));
jsonObject = TestUtils.getJsonDatacenter("XYZ1", getDataNodesRackAware());
datacenter = new TestDatacenter(jsonObject, clusterMapConfig);
assertTrue(datacenter.isRackAware());
assertEquals(datacenter.toJSONObject().toString(), jsonObject.toString());
assertEquals(datacenter, new TestDatacenter(datacenter.toJSONObject(), clusterMapConfig));
}
// Validate each hardware component (Datacenter, DataNode, and Disk) are unique
protected void validateUniqueness() throws IllegalStateException {
logger.trace("begin validateUniqueness.");
HashSet<Datacenter> datacenterSet = new HashSet<Datacenter>();
HashSet<DataNode> dataNodeSet = new HashSet<DataNode>();
HashSet<Disk> diskSet = new HashSet<Disk>();
for (Datacenter datacenter : datacenters) {
if (!datacenterSet.add(datacenter)) {
throw new IllegalStateException("Duplicate Datacenter detected: " + datacenter.toString());
}
for (DataNode dataNode : datacenter.getDataNodes()) {
if (!dataNodeSet.add(dataNode)) {
throw new IllegalStateException("Duplicate DataNode detected: " + dataNode.toString());
}
for (Disk disk : dataNode.getDisks()) {
if (!diskSet.add(disk)) {
throw new IllegalStateException("Duplicate Disk detected: " + disk.toString());
}
}
}
}
logger.trace("complete validateUniqueness.");
}