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本文整理了Java中org.jumbune.remoting.common.ZKUtils
类的一些代码示例,展示了ZKUtils
类的具体用法。这些代码示例主要来源于Github
/Stackoverflow
/Maven
等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。ZKUtils
类的具体详情如下:
包路径:org.jumbune.remoting.common.ZKUtils
类名称:ZKUtils
[英]This class ZKUtils contains utility methods to communicate with zookeeper.
[中]此类ZKUtils包含与zookeeper通信的实用方法。
代码示例来源:origin: Impetus/jumbune
/**
* Sets the agent node data on znode.
*
* @param nodePath the node path
* @param agent the Agent
*/
public static void setAgentData(String nodePath, AgentNode agent) {
try {
String hosts = null;
CuratorConnector connector = CuratorConnector.getInstance(hosts);
String json = convertAgentToGson(agent);
connector.setData(nodePath, json.getBytes(Charset.forName("UTF-8")));
} catch (Exception e) {
LOGGER.error(e.getMessage(), e);
}
}
代码示例来源:origin: Impetus/jumbune
/**
* Gets the leader name node from zookeeper.
* @param zkHosts
*
* @return the leader name node from zookeeper
*/
public static byte[] getLeaderNameNodeFromZK(String[] zkHosts) {
final int retryTimes = 10;
byte[] nameHostName = null;
int retryCount = 1;
do {
List<String> nameNodeNameList = getNodeChildrenList(zkHosts, ZKConstants.HADOOP_NODE_PATH);
for (String nameNodeName : nameNodeNameList) {
nameHostName = getActiveNameNode(zkHosts,
ZKConstants.HADOOP_NODE_PATH + File.separator + nameNodeName + ZKConstants.ACTIVE_BREAD_CRUMB);
}
if (nameHostName == null) {
try {
LOGGER.warn("found active NN null from ZK, retrying after " + 100 * retryCount + " millisecs");
Thread.sleep(100 * retryCount);
} catch (InterruptedException e) {
}
}
retryCount++;
} while (nameHostName == null && retryCount <= retryTimes);
return nameHostName;
}
代码示例来源:origin: Impetus/jumbune
public static String getActiveNNHost(String[] zkHosts){
byte[] activeHost = null;
String activeNameNode = null ;
activeHost = ZKUtils.getLeaderNameNodeFromZK(zkHosts);
try {
ActiveNodeInfo activeNodeInfo = PARSER.parsePartialFrom(activeHost);
activeNameNode = activeNodeInfo.getHostname();
} catch (InvalidProtocolBufferException e) {
LOGGER.error(e);
}
return activeNameNode;
}
代码示例来源:origin: Impetus/jumbune
/**
* Checks if is leader agent on nn.
*
* @return true, if is leader agent on nn
*/
private boolean isLeaderAgentOnNN() {
AgentNode agent = null;
try {
agent = ZKUtils.getLeaderAgentfromZK(zkHosts, haConf);
if(agent == null) {
return false;
}
} catch (ConnectException e) {
logger.error(e.getMessage(), e);
}
return agent.getHost().equals(ZKUtils.getActiveNNHost(zkHosts));
}
代码示例来源:origin: Impetus/jumbune
leaderAgentNode = getAgentData(zkHosts, ZKConstants.AGENT_LEADER_PATH);
boolean connectionFlag = true;
Socket socket = null;
LOGGER.warn("connection failed for - " + leaderAgentNode.getHost()+":"+leaderAgentNode.getPort());
connectionFlag = retryConnection(zkHosts, leaderAgentNode, haConf);
} catch (IOException e) {
} finally {
代码示例来源:origin: Impetus/jumbune
/**
* Gets the agent data from znode.
* @param zkHosts
*
* @param nodePath the node path
* @return the agent node data
*/
public static AgentNode getAgentData(String[] zkHosts, String nodePath){
CuratorConnector connector = CuratorConnector.getInstance(zkHosts);
byte data[] = null;
final int retryTimes = 10;
int retryCount = 1;
AgentNode agent = null;
try {
do {
data = connector.getDataBytes(nodePath);
if(data == null) {
LOGGER.warn("found active Agent null from ZK, retrying after " + 100 * retryCount + " millisecs");
Thread.sleep(100*retryCount);
}
retryCount++;
} while(data == null && retryCount <= retryTimes);
agent = convertGsonToAgent(new String(data, Charset.defaultCharset()));
} catch (Exception e) {
LOGGER.error(e.getMessage(), e);
}
return agent;
}
代码示例来源:origin: Impetus/jumbune
private static boolean retryConnection(String[] zkHosts, AgentNode leaderAgentNode, HAConfiguration haConf) {
boolean connectionFlag = false;
Socket socket = null;
int numRetries = haConf.getNumRetriesAgentConn();
int reconnectMillis = haConf.getAgentConnMillis();
for(int i = 1; i < numRetries && !connectionFlag; i++) {
connectionFlag = true;
leaderAgentNode = getAgentData(zkHosts, ZKConstants.AGENT_LEADER_PATH);
try {
socket = new Socket(leaderAgentNode.getHost(), leaderAgentNode.getPort());
} catch (ConnectException e){
connectionFlag = false;
LOGGER.warn("connection failed for - " + leaderAgentNode.getHost()+":"+leaderAgentNode.getPort()+ " retrying in " + (i*reconnectMillis) +" millis");
} catch (IOException e) {
} finally {
if (socket != null && !socket.isClosed()) {
try {
socket.close();
} catch (IOException e) {
}
}
}
try {
Thread.sleep(i*reconnectMillis*1000);
} catch (InterruptedException e) {
}
}
return connectionFlag;
}
代码示例来源:origin: Impetus/jumbune
/**
* Update leader agent info.
*/
private void updateLeaderAgentInfo() {
AgentNode agentNode = null;
try {
agentNode = ZKUtils.getLeaderAgentfromZK(zkHosts, haConf);
} catch (ConnectException e1) {
logger.error("Unable to find active agent(leader) from zk, queried on ensembles - " + Arrays.toString(zkHosts));
}
jac = new JumbuneAgentCommunicator(agentNode.getHost(), agentNode.getPort());
}
代码示例来源:origin: Impetus/jumbune
/**
* Checks if is NN changed.
*
* @return true, if is NN changed
*/
private boolean isNNChanged() {
return !HAUtil.getActiveNNHost(this.clusterName).equals(ZKUtils.getActiveNNHost(zkHosts));
}
代码示例来源:origin: Impetus/jumbune
@Override
public void run() {
try {
long startTimeInMilis = Calendar.getInstance().getTimeInMillis();
LOGGER.info("Started rsync execution at "
+ Calendar.getInstance().getTime());
// get agents node information from zookeeper
List<AgentNode> agentNodes = ZKUtils.getAgents(new String[] {this.zkConnectionString});
// iterate over agent list and run rsync command
for (AgentNode agent : agentNodes) {
LOGGER.debug("Agent Object :" + agent.toString());
if (agent.getStatus().equals(AgentNodeStatus.LEADER)) {
LOGGER.debug("Skipping rsync execution for Leader Agent Object :");
continue;
}
if (agent.getPrivateKey() != null
&& !agent.getPrivateKey().trim().equals("")) {
rsyncWithPasswordlessSSH(agent);
}
}
LOGGER.info("Total rsync execution time : "+ (Calendar.getInstance().getTimeInMillis() - startTimeInMilis)+ "ms.");
} catch (Exception e) {
LOGGER.error("Rsync execution failed.", e);
}
}
代码示例来源:origin: Impetus/jumbune
leaderAgentNode = getAgentData(zkHosts, ZKConstants.AGENT_LEADER_PATH);
boolean connectionFlag = true;
Socket socket = null;
LOGGER.warn("connection failed for - " + leaderAgentNode.getHost()+":"+leaderAgentNode.getPort());
connectionFlag = retryConnection(zkHosts, leaderAgentNode, haConf);
} catch (IOException e) {
} finally {
代码示例来源:origin: Impetus/jumbune
/**
* Update global state.
*/
private void updateGlobalState() {
AgentNode agent = null;
try {
agent = ZKUtils.getLeaderAgentfromZK(zkHosts, haConf);
} catch (ConnectException e) {
logger.error(e.getMessage(), e);
}
HAUtil.setActiveAgentHost(this.clusterName, agent.getHost());
HAUtil.setActiveAgentPort(this.clusterName, agent.getPort());
HAUtil.setActiveNNHost(this.clusterName, ZKUtils.getActiveNNHost(zkHosts));
}
代码示例来源:origin: Impetus/jumbune
/**
* Gets the agent data from znode.
* @param zkHosts
*
* @param nodePath the node path
* @return the agent node data
*/
public static AgentNode getAgentData(String[] zkHosts, String nodePath){
CuratorConnector connector = CuratorConnector.getInstance(zkHosts);
byte data[] = null;
final int retryTimes = 10;
int retryCount = 1;
AgentNode agent = null;
try {
do {
data = connector.getDataBytes(nodePath);
if(data == null) {
LOGGER.warn("found active Agent null from ZK, retrying after " + 100 * retryCount + " millisecs");
Thread.sleep(100*retryCount);
}
retryCount++;
} while(data == null && retryCount <= retryTimes);
agent = convertGsonToAgent(new String(data, Charset.defaultCharset()));
} catch (Exception e) {
LOGGER.error(e.getMessage(), e);
}
return agent;
}
代码示例来源:origin: Impetus/jumbune
private static boolean retryConnection(String[] zkHosts, AgentNode leaderAgentNode, HAConfiguration haConf) {
boolean connectionFlag = false;
Socket socket = null;
int numRetries = haConf.getNumRetriesAgentConn();
int reconnectMillis = haConf.getAgentConnMillis();
for(int i = 1; i < numRetries && !connectionFlag; i++) {
connectionFlag = true;
leaderAgentNode = getAgentData(zkHosts, ZKConstants.AGENT_LEADER_PATH);
try {
socket = new Socket(leaderAgentNode.getHost(), leaderAgentNode.getPort());
} catch (ConnectException e){
connectionFlag = false;
LOGGER.warn("connection failed for - " + leaderAgentNode.getHost()+":"+leaderAgentNode.getPort()+ " retrying in " + (i*reconnectMillis) +" millis");
} catch (IOException e) {
} finally {
if (socket != null && !socket.isClosed()) {
try {
socket.close();
} catch (IOException e) {
}
}
}
try {
Thread.sleep(i*reconnectMillis*1000);
} catch (InterruptedException e) {
}
}
return connectionFlag;
}
代码示例来源:origin: Impetus/jumbune
private void updateLeaderAgentInfo() {
AgentNode agentNode = null;
try {
agentNode = ZKUtils.getLeaderAgentfromZK(zkHosts, haConf);
} catch (ConnectException e1) {
logger.error("unable to find active agent(leader) from zk, queried on ensembles - " + Arrays.toString(zkHosts));
}
jac = new JumbuneAgentCommunicator(agentNode.getHost(), agentNode.getPort());
}
代码示例来源:origin: Impetus/jumbune
@Override
public void run() {
String currentlyActiveNN = HAUtil.getActiveNNHost(this.clusterName);
int failCount = 0;
while (!stop) {
if (!ZKUtils.getActiveNNHost(zkHosts).equals(currentlyActiveNN)) {
failCount++;
}
try {
Thread.sleep(5 * 1000);
} catch (InterruptedException e) {
logger.error("Thread interrupted while monitoring Namenode state");
}
if (failCount == nnZnodeRetries) {
logger.warn("namenode dead !!! Applying recovery...");
nnFailed = true;
barrier.reset();
break;
}
}
}
代码示例来源:origin: Impetus/jumbune
/**
* Gets the leader name node from zookeeper.
* @param zkHosts
*
* @return the leader name node from zookeeper
*/
public static byte[] getLeaderNameNodeFromZK(String[] zkHosts) {
final int retryTimes = 10;
byte[] nameHostName = null;
int retryCount = 1;
do {
List<String> nameNodeNameList = getNodeChildrenList(zkHosts, ZKConstants.HADOOP_NODE_PATH);
for (String nameNodeName : nameNodeNameList) {
nameHostName = getActiveNameNode(zkHosts,
ZKConstants.HADOOP_NODE_PATH + File.separator + nameNodeName + ZKConstants.ACTIVE_BREAD_CRUMB);
}
if (nameHostName == null) {
try {
LOGGER.warn("found active NN null from ZK, retrying after " + 100 * retryCount + " millisecs");
Thread.sleep(100 * retryCount);
} catch (InterruptedException e) {
}
}
retryCount++;
} while (nameHostName == null && retryCount <= retryTimes);
return nameHostName;
}
代码示例来源:origin: Impetus/jumbune
public static String getActiveNNHost(String[] zkHosts){
byte[] activeHost = null;
String activeNameNode = null ;
activeHost = ZKUtils.getLeaderNameNodeFromZK(zkHosts);
try {
ActiveNodeInfo activeNodeInfo = PARSER.parsePartialFrom(activeHost);
activeNameNode = activeNodeInfo.getHostname();
} catch (InvalidProtocolBufferException e) {
LOGGER.error(e);
}
return activeNameNode;
}
代码示例来源:origin: Impetus/jumbune
/**
* Sets the agent node data on znode.
*
* @param nodePath the node path
* @param agent the Agent
*/
public static void setAgentData(String nodePath, AgentNode agent) {
try {
String hosts = null;
CuratorConnector connector = CuratorConnector.getInstance(hosts);
String json = convertAgentToGson(agent);
connector.setData(nodePath, json.getBytes(Charset.forName("UTF-8")));
} catch (Exception e) {
LOGGER.error(e.getMessage(), e);
}
}
代码示例来源:origin: Impetus/jumbune
/**
* Force agent election.
*
* @return the agent node
*/
private AgentNode forceAgentElection() {
AgentNode agent = null;
try {
agent = ZKUtils.getLeaderAgentfromZK(zkHosts, haConf);
// send self destruct command to currently active agent so that it
// relinquishes leadership
shutdownAgent();
while (agent != null && HAUtil.compareAgent(this.clusterName, agent.getHost(), agent.getPort())) {
logger.debug("Blocking till a new leader agent is elected...");
agent = ZKUtils.getLeaderAgentfromZK(zkHosts, haConf);
Thread.sleep(1 * 1000);
}
} catch (InterruptedException e) {
} catch (ConnectException e) {
logger.error("forceAgentElection - ", e);
}
return agent;
}
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