/**
* 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.ambari.server.utils;
import com.google.common.base.Joiner;
import com.google.gson.Gson;
import org.apache.ambari.server.AmbariException;
import org.apache.ambari.server.Role;
import org.apache.ambari.server.RoleCommand;
import org.apache.ambari.server.actionmanager.Stage;
import org.apache.ambari.server.agent.ExecutionCommand;
import org.apache.ambari.server.state.Cluster;
import org.apache.ambari.server.state.Host;
import org.apache.ambari.server.state.HostComponentAdminState;
import org.apache.ambari.server.state.Service;
import org.apache.ambari.server.state.ServiceComponent;
import org.apache.ambari.server.state.ServiceComponentHost;
import org.apache.ambari.server.state.svccomphost.ServiceComponentHostInstallEvent;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.codehaus.jackson.JsonGenerationException;
import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.SerializationConfig;
import javax.xml.bind.JAXBException;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;
public class StageUtils {
public static final Integer DEFAULT_PING_PORT = 8670;
private static final Log LOG = LogFactory.getLog(StageUtils.class);
private static final String HOSTS_LIST = "all_hosts";
private static final String PORTS = "all_ping_ports";
private static Map<String, String> componentToClusterInfoKeyMap =
new HashMap<String, String>();
private static Map<String, String> decommissionedToClusterInfoKeyMap =
new HashMap<String, String>();
private volatile static Gson gson;
public static Gson getGson() {
if (gson != null) {
return gson;
} else {
synchronized (LOG) {
if (gson == null) {
gson = new Gson();
}
return gson;
}
}
}
public static void setGson(Gson gson) {
if (gson == null) {
StageUtils.gson = gson;
}
}
static {
componentToClusterInfoKeyMap.put("NAMENODE", "namenode_host");
componentToClusterInfoKeyMap.put("JOBTRACKER", "jtnode_host");
componentToClusterInfoKeyMap.put("SECONDARY_NAMENODE", "snamenode_host");
componentToClusterInfoKeyMap.put("RESOURCEMANAGER", "rm_host");
componentToClusterInfoKeyMap.put("NODEMANAGER", "nm_hosts");
componentToClusterInfoKeyMap.put("HISTORYSERVER", "hs_host");
componentToClusterInfoKeyMap.put("JOURNALNODE", "journalnode_hosts");
componentToClusterInfoKeyMap.put("ZKFC", "zkfc_hosts");
componentToClusterInfoKeyMap.put("ZOOKEEPER_SERVER", "zookeeper_hosts");
componentToClusterInfoKeyMap.put("FLUME_SERVER", "flume_hosts");
componentToClusterInfoKeyMap.put("HBASE_MASTER", "hbase_master_hosts");
componentToClusterInfoKeyMap.put("HBASE_REGIONSERVER", "hbase_rs_hosts");
componentToClusterInfoKeyMap.put("HIVE_SERVER", "hive_server_host");
componentToClusterInfoKeyMap.put("OOZIE_SERVER", "oozie_server");
componentToClusterInfoKeyMap.put("WEBHCAT_SERVER", "webhcat_server_host");
componentToClusterInfoKeyMap.put("MYSQL_SERVER", "hive_mysql_host");
componentToClusterInfoKeyMap.put("DASHBOARD", "dashboard_host");
componentToClusterInfoKeyMap.put("NAGIOS_SERVER", "nagios_server_host");
componentToClusterInfoKeyMap.put("GANGLIA_SERVER", "ganglia_server_host");
componentToClusterInfoKeyMap.put("DATANODE", "slave_hosts");
componentToClusterInfoKeyMap.put("TASKTRACKER", "mapred_tt_hosts");
componentToClusterInfoKeyMap.put("HBASE_REGIONSERVER", "hbase_rs_hosts");
componentToClusterInfoKeyMap.put("KERBEROS_SERVER", "kdc_host");
componentToClusterInfoKeyMap.put("KERBEROS_ADMIN_CLIENT", "kerberos_adminclient_host");
}
static {
decommissionedToClusterInfoKeyMap.put("DATANODE", "decom_dn_hosts");
decommissionedToClusterInfoKeyMap.put("TASKTRACKER", "decom_tt_hosts");
decommissionedToClusterInfoKeyMap.put("NODEMANAGER", "decom_nm_hosts");
decommissionedToClusterInfoKeyMap.put("HBASE_REGIONSERVER", "decom_hbase_rs_hosts");
}
public static String getActionId(long requestId, long stageId) {
return requestId + "-" + stageId;
}
public static long[] getRequestStage(String actionId) {
String[] fields = actionId.split("-");
long[] requestStageIds = new long[2];
requestStageIds[0] = Long.parseLong(fields[0]);
requestStageIds[1] = Long.parseLong(fields[1]);
return requestStageIds;
}
public static Stage getATestStage(long requestId, long stageId, String clusterHostInfo) {
String hostname;
try {
hostname = InetAddress.getLocalHost().getHostName();
} catch (UnknownHostException e) {
hostname = "host-dummy";
}
return getATestStage(requestId, stageId, hostname, clusterHostInfo);
}
//For testing only
public static Stage getATestStage(long requestId, long stageId, String hostname, String clusterHostInfo) {
Stage s = new Stage(requestId, "/tmp", "cluster1", "context", clusterHostInfo);
s.setStageId(stageId);
long now = System.currentTimeMillis();
s.addHostRoleExecutionCommand(hostname, Role.NAMENODE, RoleCommand.INSTALL,
new ServiceComponentHostInstallEvent("NAMENODE", hostname, now, "HDP-1.2.0"),
"cluster1", "HDFS");
ExecutionCommand execCmd = s.getExecutionCommandWrapper(hostname, "NAMENODE").getExecutionCommand();
execCmd.setCommandId(s.getActionId());
List<String> slaveHostList = new ArrayList<String>();
slaveHostList.add(hostname);
slaveHostList.add("host2");
Map<String, String> hdfsSite = new TreeMap<String, String>();
hdfsSite.put("dfs.block.size", "2560000000");
Map<String, Map<String, String>> configurations =
new TreeMap<String, Map<String, String>>();
configurations.put("hdfs-site", hdfsSite);
execCmd.setConfigurations(configurations);
Map<String, String> params = new TreeMap<String, String>();
params.put("jdklocation", "/x/y/z");
params.put("stack_version", "1.2.0");
params.put("stack_name", "HDP");
execCmd.setHostLevelParams(params);
Map<String, String> roleParams = new TreeMap<String, String>();
roleParams.put("format", "false");
execCmd.setRoleParams(roleParams);
Map<String, String> commandParams = new TreeMap<String, String>();
commandParams.put(ExecutionCommand.KeyNames.COMMAND_TIMEOUT, "600");
execCmd.setCommandParams(commandParams);
return s;
}
public static String jaxbToString(Object jaxbObj) throws JAXBException,
JsonGenerationException, JsonMappingException, IOException {
return getGson().toJson(jaxbObj);
}
public static ExecutionCommand stringToExecutionCommand(String json)
throws JsonParseException, JsonMappingException, IOException {
ObjectMapper mapper = new ObjectMapper();
mapper.configure(SerializationConfig.Feature.INDENT_OUTPUT, true);
mapper.configure(SerializationConfig.Feature.USE_ANNOTATIONS, true);
InputStream is = new ByteArrayInputStream(json.getBytes(Charset.forName("UTF8")));
return mapper.readValue(is, ExecutionCommand.class);
}
public static <T> T fromJson(String json, Class<T> clazz) throws IOException {
ObjectMapper mapper = new ObjectMapper();
mapper.configure(SerializationConfig.Feature.INDENT_OUTPUT, true);
mapper.configure(SerializationConfig.Feature.USE_ANNOTATIONS, true);
InputStream is = new ByteArrayInputStream(json.getBytes(Charset.forName("UTF8")));
return mapper.readValue(is, clazz);
}
public static Map<String, Set<String>> getClusterHostInfo(
Map<String, Host> allHosts, Cluster cluster) throws AmbariException {
Map<String, SortedSet<Integer>> hostRolesInfo = new HashMap<String, SortedSet<Integer>>();
Map<String, Set<String>> clusterHostInfo = new HashMap<String, Set<String>>();
//Fill hosts and ports lists
Set<String> hostsSet = new LinkedHashSet<String>();
List<Integer> portsList = new ArrayList<Integer>();
for (Host host : allHosts.values()) {
Integer currentPingPort = host.getCurrentPingPort() == null ?
DEFAULT_PING_PORT : host.getCurrentPingPort();
hostsSet.add(host.getHostName());
portsList.add(currentPingPort);
}
List<String> hostsList = new ArrayList<String>(hostsSet);
//Fill host roles
for (Entry<String, Service> serviceEntry : cluster.getServices().entrySet()) {
Service service = serviceEntry.getValue();
for (Entry<String, ServiceComponent> serviceComponentEntry : service.getServiceComponents().entrySet()) {
ServiceComponent serviceComponent = serviceComponentEntry.getValue();
String componentName = serviceComponent.getName();
String roleName = componentToClusterInfoKeyMap.get(componentName);
if (null == roleName && !serviceComponent.isClientComponent()) {
roleName = componentName.toLowerCase() + "_hosts";
}
String decomRoleName = decommissionedToClusterInfoKeyMap.get(componentName);
if (roleName == null && decomRoleName == null) {
continue;
}
for (String hostName : serviceComponent.getServiceComponentHosts().keySet()) {
if (roleName != null) {
SortedSet<Integer> hostsForComponentsHost = hostRolesInfo.get(roleName);
if (hostsForComponentsHost == null) {
hostsForComponentsHost = new TreeSet<Integer>();
hostRolesInfo.put(roleName, hostsForComponentsHost);
}
int hostIndex = hostsList.indexOf(hostName);
//Add index of host to current host role
hostsForComponentsHost.add(hostIndex);
}
if (decomRoleName != null) {
ServiceComponentHost scHost = serviceComponent.getServiceComponentHost(hostName);
if (scHost.getComponentAdminState() == HostComponentAdminState.DECOMMISSIONED) {
SortedSet<Integer> hostsForComponentsHost = hostRolesInfo.get(decomRoleName);
if (hostsForComponentsHost == null) {
hostsForComponentsHost = new TreeSet<Integer>();
hostRolesInfo.put(decomRoleName, hostsForComponentsHost);
}
int hostIndex = hostsList.indexOf(hostName);
//Add index of host to current host role
hostsForComponentsHost.add(hostIndex);
}
}
}
}
}
for (Entry<String, SortedSet<Integer>> entry : hostRolesInfo.entrySet()) {
TreeSet<Integer> sortedSet = new TreeSet<Integer>(entry.getValue());
Set<String> replacedRangesSet = replaceRanges(sortedSet);
clusterHostInfo.put(entry.getKey(), replacedRangesSet);
}
clusterHostInfo.put(HOSTS_LIST, hostsSet);
clusterHostInfo.put(PORTS, replaceMappedRanges(portsList));
return clusterHostInfo;
}
/**
* Finds ranges in sorted set and replaces ranges by compact notation
* <p/>
* <p>For example, suppose <tt>set</tt> comprises<tt> [1, 2, 3, 4, 7]</tt>.
* After invoking <tt>rangedSet = StageUtils.replaceRanges(set)</tt>
* <tt>rangedSet</tt> will comprise
* <tt>["1-4", "7"]</tt>..
*
* @param set the source set to be ranged
*/
public static Set<String> replaceRanges(SortedSet<Integer> set) {
if (set == null) {
return null;
}
Set<String> rangedSet = new HashSet<String>();
Integer prevElement = null;
Integer startOfRange = set.first();
for (Integer i : set) {
if (prevElement != null && (i - prevElement) > 1) {
String rangeItem = getRangedItem(startOfRange, prevElement);
rangedSet.add(rangeItem);
startOfRange = i;
}
prevElement = i;
}
rangedSet.add(getRangedItem(startOfRange, prevElement));
return rangedSet;
}
/**
* Finds ranges in list and replaces ranges by compact notation
* <p/>
* <p>For example, suppose <tt>list</tt> comprises<tt> [1, 1, 2, 2, 1, 3]</tt>.
* After invoking <tt>rangedMappedSet = StageUtils.replaceMappedRanges(list)</tt>
* <tt>rangedMappedSet</tt> will comprise
* <tt>["1:0-1,4", "2:2-3", "3:5"]</tt>..
*
* @param values the source list to be ranged
*/
public static Set<String> replaceMappedRanges(List<Integer> values) {
Map<Integer, SortedSet<Integer>> convolutedValues = new HashMap<Integer, SortedSet<Integer>>();
int valueIndex = 0;
for (Integer value : values) {
SortedSet<Integer> correspValues = convolutedValues.get(value);
if (correspValues == null) {
correspValues = new TreeSet<Integer>();
convolutedValues.put(value, correspValues);
}
correspValues.add(valueIndex);
valueIndex++;
}
Set<String> result = new HashSet<String>();
for (Entry<Integer, SortedSet<Integer>> entry : convolutedValues.entrySet()) {
Set<String> replacedRanges = replaceRanges(entry.getValue());
result.add(entry.getKey() + ":" + Joiner.on(",").join(replacedRanges));
}
return result;
}
private static String getRangedItem(Integer startOfRange, Integer endOfRange) {
String separator = (endOfRange - startOfRange) > 1 ? "-" : ",";
String rangeItem = endOfRange.equals(startOfRange) ?
endOfRange.toString() :
startOfRange + separator + endOfRange;
return rangeItem;
}
public static String getHostName() {
try {
return InetAddress.getLocalHost().getCanonicalHostName();
} catch (UnknownHostException e) {
LOG.warn("Could not find canonical hostname ", e);
return "localhost";
}
}
}