mirror of https://github.com/apache/lucene.git
Patch for SOLR-3155. Fixes JSON output format error and alphabetizes children of nodex.
git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1293039 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Erick Erickson
parent
48bb56dea8
commit
b32b52578d
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@ -17,6 +17,21 @@
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package org.apache.solr.servlet;
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import org.apache.noggit.CharArr;
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import org.apache.noggit.JSONWriter;
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import org.apache.solr.cloud.ZkController;
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import org.apache.solr.common.cloud.SolrZkClient;
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import org.apache.solr.common.util.StrUtils;
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import org.apache.solr.core.CoreContainer;
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import org.apache.zookeeper.KeeperException;
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import org.apache.zookeeper.data.Stat;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.io.UnsupportedEncodingException;
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@ -25,19 +40,6 @@ import java.util.Date;
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import java.util.List;
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import java.util.concurrent.TimeoutException;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.apache.solr.cloud.ZkController;
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import org.apache.solr.common.cloud.SolrZkClient;
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import org.apache.solr.common.util.StrUtils;
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import org.apache.solr.common.util.XML;
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import org.apache.solr.core.CoreContainer;
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import org.apache.zookeeper.KeeperException;
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import org.apache.zookeeper.data.Stat;
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/**
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* Zookeeper Info
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@ -45,6 +47,7 @@ import org.apache.zookeeper.data.Stat;
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* @since solr 4.0
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*/
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public final class ZookeeperInfoServlet extends HttpServlet {
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static final Logger log = LoggerFactory.getLogger(ZookeeperInfoServlet.class);
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@Override
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public void init() throws ServletException {
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@ -57,13 +60,13 @@ public final class ZookeeperInfoServlet extends HttpServlet {
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response.setCharacterEncoding("UTF-8");
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response.setContentType("application/json");
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// This attribute is set by the SolrDispatchFilter
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CoreContainer cores = (CoreContainer) request.getAttribute("org.apache.solr.CoreContainer");
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String path = request.getParameter("path");
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String addr = request.getParameter("addr");
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if (addr != null && addr.length() == 0)
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{
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if (addr != null && addr.length() == 0) {
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addr = null;
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}
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@ -71,6 +74,7 @@ public final class ZookeeperInfoServlet extends HttpServlet {
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boolean detail = detailS != null && detailS.equals("true");
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PrintWriter out = response.getWriter();
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ZKPrinter printer = new ZKPrinter(response, out, cores.getZkController(), addr);
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printer.detail = detail;
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@ -93,9 +97,7 @@ public final class ZookeeperInfoServlet extends HttpServlet {
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//
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//--------------------------------------------------------------------------------------
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static class ZKPrinter
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{
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static class ZKPrinter {
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static boolean FULLPATH_DEFAULT = false;
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boolean indent = true;
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@ -107,32 +109,26 @@ public final class ZookeeperInfoServlet extends HttpServlet {
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boolean doClose; // close the client after done if we opened it
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HttpServletResponse response;
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PrintWriter out;
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final HttpServletResponse response;
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final PrintWriter out;
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SolrZkClient zkClient;
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int level;
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int maxData = 95;
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public ZKPrinter(HttpServletResponse response, PrintWriter out, ZkController controller, String addr) throws IOException
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{
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public ZKPrinter(HttpServletResponse response, PrintWriter out, ZkController controller, String addr) throws IOException {
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this.response = response;
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this.out = out;
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this.addr = addr;
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if (addr == null)
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{
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if (controller != null)
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{
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if (addr == null) {
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if (controller != null) {
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// this core is zk enabled
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keeperAddr = controller.getZkServerAddress();
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zkClient = controller.getZkClient();
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if (zkClient != null && zkClient.isConnected())
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{
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if (zkClient != null && zkClient.isConnected()) {
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return;
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}
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else
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{
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} else {
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// try a different client with this address
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addr = keeperAddr;
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}
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@ -140,60 +136,31 @@ public final class ZookeeperInfoServlet extends HttpServlet {
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}
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keeperAddr = addr;
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if (addr == null)
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{
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response.setStatus(404);
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out.println
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(
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"{" +
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"\"status\": 404" +
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", \"error\" : \"Zookeeper is not configured for this Solr Core. Please try connecting to an alternate zookeeper address.\"" +
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"}"
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);
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if (addr == null) {
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writeError(404, "Zookeeper is not configured for this Solr Core. Please try connecting to an alternate zookeeper address.");
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return;
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}
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try
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{
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try {
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zkClient = new SolrZkClient(addr, 10000);
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doClose = true;
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}
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catch (TimeoutException e)
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{
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response.setStatus(503);
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out.println
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(
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"{" +
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"\"status\": 503" +
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", \"error\" : \"Could not connect to zookeeper at '" + addr + "'\"" +
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"}"
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);
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} catch (TimeoutException e) {
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writeError(503, "Could not connect to zookeeper at '" + addr + "'\"");
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zkClient = null;
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return;
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}
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catch (InterruptedException e)
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{
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} catch (InterruptedException e) {
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// Restore the interrupted status
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Thread.currentThread().interrupt();
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response.setStatus(503);
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out.println
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(
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"{" +
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"\"status\": 503" +
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", \"error\" : \"Could not connect to zookeeper at '" + addr + "'\"" +
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"}"
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);
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writeError(503, "Could not connect to zookeeper at '" + addr + "'\"");
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zkClient = null;
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return;
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}
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}
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public void close()
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{
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public void close() {
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try {
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if (doClose)
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{
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if (doClose) {
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zkClient.close();
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}
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} catch (InterruptedException e) {
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@ -202,8 +169,7 @@ public final class ZookeeperInfoServlet extends HttpServlet {
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}
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// main entry point
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void print(String path) throws IOException
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{
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void print(String path) throws IOException {
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if (zkClient == null) {
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return;
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}
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@ -211,328 +177,261 @@ public final class ZookeeperInfoServlet extends HttpServlet {
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// normalize path
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if (path == null) {
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path = "/";
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}
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else {
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} else {
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path.trim();
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if (path.length() == 0)
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{
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if (path.length() == 0) {
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path = "/";
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}
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}
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if (path.endsWith("/") && path.length() > 1)
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{
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if (path.endsWith("/") && path.length() > 1) {
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path = path.substring(0, path.length() - 1);
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}
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int idx = path.lastIndexOf('/');
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String parent = idx >= 0 ? path.substring(0, idx) : path;
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if (parent.length() == 0)
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{
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if (parent.length() == 0) {
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parent = "/";
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}
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out.println("{");
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CharArr chars = new CharArr();
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JSONWriter json = new JSONWriter(chars, 2);
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json.startObject();
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if (detail)
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{
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printZnode(path);
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out.println(", ");
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}
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out.println("\"tree\" : [");
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printTree(path);
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out.println("]");
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out.println("}");
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}
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void exception(Exception e)
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{
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response.setStatus(500);
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out.println
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(
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"{" +
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"\"status\": 500" +
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", \"error\" : \"" + e.toString() + "\"" +
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"}"
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);
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}
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void xmlescape(String s)
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{
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try
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{
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XML.escapeCharData(s, out);
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}
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catch (IOException e)
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{
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throw new RuntimeException(e);
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}
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}
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// collapse all whitespace to a single space or escaped newline
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String compress(String str) {
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < str.length(); i++) {
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char ch = str.charAt(i);
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boolean whitespace = false;
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boolean newline = false;
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while (Character.isWhitespace(ch)) {
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whitespace = true;
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if (ch == '\n')
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newline = true;
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if (++i >= str.length())
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return sb.toString();
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ch = str.charAt(i);
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}
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if (newline) {
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// sb.append("\\n");
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sb.append(" "); // collapse newline to two spaces
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} else if (whitespace) {
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sb.append(' ');
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}
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// TODO: handle non-printable chars
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sb.append(ch);
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if (sb.length() >= maxData)
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return sb.toString() + " ...";
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}
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return sb.toString();
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}
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void url(String label, String path, boolean detail) throws IOException {
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try {
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out.print("<a href=\"zookeeper?");
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if (path != null) {
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out.print("path=");
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out.print(URLEncoder.encode(path, "UTF-8"));
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}
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if (detail) {
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out.print("&detail=" + detail);
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if (!printZnode(json, path)) {
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return;
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}
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if (fullpath != FULLPATH_DEFAULT) {
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out.print("&fullpath=" + fullpath);
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}
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if (addr != null) {
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out.print("&addr=");
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out.print(URLEncoder.encode(addr, "UTF-8"));
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json.writeValueSeparator();
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}
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out.print("\">");
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xmlescape(label);
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out.print("</a>");
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} catch (UnsupportedEncodingException e) {
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exception(e);
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json.writeString("tree");
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json.writeNameSeparator();
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json.startArray();
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if (!printTree(json, path)) {
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return; // there was an error
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}
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json.endArray();
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json.endObject();
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out.println(chars.toString());
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}
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void printTree(String path) throws IOException
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{
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void writeError(int code, String msg) {
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response.setStatus(code);
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CharArr chars = new CharArr();
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JSONWriter w = new JSONWriter(chars, 2);
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w.startObject();
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w.indent();
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w.writeString("status");
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w.writeNameSeparator();
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w.write(code);
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w.writeValueSeparator();
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w.indent();
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w.writeString("error");
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w.writeNameSeparator();
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w.writeString(msg);
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w.endObject();
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out.println(chars.toString());
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}
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boolean printTree(JSONWriter json, String path) throws IOException {
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String label = path;
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if (!fullpath)
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{
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if (!fullpath) {
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int idx = path.lastIndexOf('/');
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label = idx > 0 ? path.substring(idx + 1) : path;
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}
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json.startObject();
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//writeKeyValue(json, "data", label, true );
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json.writeString("data");
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json.writeNameSeparator();
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//url(label, path, true);
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out.println("{");
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out.println("\"data\" : \"" + label + "\"");
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json.startObject();
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writeKeyValue(json, "title", label, true);
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json.writeValueSeparator();
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json.writeString("attr");
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json.writeNameSeparator();
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json.startObject();
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writeKeyValue(json, "href", "zookeeper?detail=true&path=" + URLEncoder.encode(path, "UTF-8"), true);
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json.endObject();
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json.endObject();
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Stat stat = new Stat();
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try
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{
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try {
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byte[] data = zkClient.getData(path, null, stat, true);
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if( stat.getEphemeralOwner() != 0 )
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{
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out.println(", \"ephemeral\" : true");
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out.println(", \"version\" : \"" + stat.getVersion() + "\"");
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if (stat.getEphemeralOwner() != 0) {
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writeKeyValue(json, "ephemeral", true, false);
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writeKeyValue(json, "version", stat.getVersion(), false);
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}
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/*
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if (stat.getNumChildren() != 0)
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{
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writeKeyValue(json, "children_count", stat.getNumChildren(), false );
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out.println(", \"children_count\" : \"" + stat.getNumChildren() + "\"");
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}
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*/
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//if (data != null)
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if( stat.getDataLength() != 0 )
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{
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if (stat.getDataLength() != 0) {
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String str;
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try
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{
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try {
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str = new String(data, "UTF-8");
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str = str.replaceAll("\\\"", "\\\\\"");
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out.print(", \"content\" : \"");
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//xmlescape(compress(str));
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out.print(compress(str));
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out.println("\"");
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}
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catch (UnsupportedEncodingException e)
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{
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//writeKeyValue(json, "content", str, false );
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} catch (UnsupportedEncodingException e) {
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// not UTF8
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StringBuilder sb = new StringBuilder("BIN(");
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sb.append("len=" + data.length);
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sb.append("hex=");
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int limit = Math.min(data.length, maxData / 2);
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for (int i = 0; i < limit; i++)
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{
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for (int i = 0; i < limit; i++) {
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byte b = data[i];
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sb.append(StrUtils.HEX_DIGITS[(b >> 4) & 0xf]);
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sb.append(StrUtils.HEX_DIGITS[b & 0xf]);
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}
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if (limit != data.length)
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{
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if (limit != data.length) {
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sb.append("...");
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}
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sb.append(")");
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str = sb.toString();
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//out.print(str);
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//?? writeKeyValue(json, "content", str, false );
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}
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}
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}
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catch (IllegalArgumentException e)
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{
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} catch (IllegalArgumentException e) {
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// path doesn't exist (must have been removed)
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out.println("(path gone)");
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}
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catch (KeeperException e)
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{
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e.printStackTrace();
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}
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catch (InterruptedException e)
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{
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e.printStackTrace();
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writeKeyValue(json, "warning", "(path gone)", false);
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} catch (KeeperException e) {
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writeKeyValue(json, "warning", e.toString(), false);
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log.warn("Keeper Exception", e);
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} catch (InterruptedException e) {
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writeKeyValue(json, "warning", e.toString(), false);
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log.warn("InterruptedException", e);
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}
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if( stat.getNumChildren() > 0 )
|
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{
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out.print(", \"children\" : [");
|
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if (stat.getNumChildren() > 0) {
|
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json.writeValueSeparator();
|
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if (indent) {
|
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json.indent();
|
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}
|
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json.writeString("children");
|
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json.writeNameSeparator();
|
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json.startArray();
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List<String> children = null;
|
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try
|
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{
|
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children = zkClient.getChildren(path, null, true);
|
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}
|
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catch (KeeperException e)
|
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{
|
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exception(e);
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return;
|
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}
|
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catch (InterruptedException e)
|
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{
|
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exception(e);
|
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}
|
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catch (IllegalArgumentException e)
|
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{
|
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// path doesn't exist (must have been removed)
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out.println("(children gone)");
|
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}
|
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try {
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List<String> children = zkClient.getChildren(path, null, true);
|
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java.util.Collections.sort(children);
|
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|
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Integer i = 0;
|
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for( String child : children )
|
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{
|
||||
if( 0 != i )
|
||||
{
|
||||
out.print(", ");
|
||||
boolean first = true;
|
||||
for (String child : children) {
|
||||
if (!first) {
|
||||
json.writeValueSeparator();
|
||||
}
|
||||
|
||||
String childPath = path + (path.endsWith("/") ? "" : "/") + child;
|
||||
printTree( childPath );
|
||||
|
||||
i++;
|
||||
if (!printTree(json, childPath)) {
|
||||
return false;
|
||||
}
|
||||
first = false;
|
||||
}
|
||||
} catch (KeeperException e) {
|
||||
writeError(500, e.toString());
|
||||
return false;
|
||||
} catch (InterruptedException e) {
|
||||
writeError(500, e.toString());
|
||||
return false;
|
||||
} catch (IllegalArgumentException e) {
|
||||
// path doesn't exist (must have been removed)
|
||||
json.writeString("(children gone)");
|
||||
}
|
||||
|
||||
out.println("]");
|
||||
json.endArray();
|
||||
}
|
||||
|
||||
out.println("}");
|
||||
json.endObject();
|
||||
return true;
|
||||
}
|
||||
|
||||
String time(long ms) {
|
||||
return (new Date(ms)).toString() + " (" + ms + ")";
|
||||
}
|
||||
|
||||
void printZnode(String path) throws IOException
|
||||
{
|
||||
try
|
||||
{
|
||||
public void writeKeyValue(JSONWriter json, String k, Object v, boolean isFirst) {
|
||||
if (!isFirst) {
|
||||
json.writeValueSeparator();
|
||||
}
|
||||
if (indent) {
|
||||
json.indent();
|
||||
}
|
||||
json.writeString(k);
|
||||
json.writeNameSeparator();
|
||||
json.write(v);
|
||||
}
|
||||
|
||||
boolean printZnode(JSONWriter json, String path) throws IOException {
|
||||
try {
|
||||
Stat stat = new Stat();
|
||||
byte[] data = zkClient.getData(path, null, stat, true);
|
||||
|
||||
out.println("\"znode\" : {");
|
||||
json.writeString("znode");
|
||||
json.writeNameSeparator();
|
||||
json.startObject();
|
||||
|
||||
out.print("\"path\" : \"");
|
||||
xmlescape(path);
|
||||
out.println("\"");
|
||||
writeKeyValue(json, "path", path, true);
|
||||
|
||||
out.println(", \"version\" : \"" + stat.getVersion() + "\"");
|
||||
out.println(", \"aversion\" : \"" + stat.getAversion() + "\"");
|
||||
out.println(", \"cversion\" : \"" + stat.getCversion() + "\"");
|
||||
out.println(", \"ctime\" : \"" + time(stat.getCtime()) + "\"");
|
||||
out.println(", \"mtime\" : \"" + time(stat.getMtime()) + "\"");
|
||||
out.println(", \"czxid\" : \"" + stat.getCzxid() + "\"");
|
||||
out.println(", \"mzxid\" : \"" + stat.getMzxid() + "\"");
|
||||
out.println(", \"pzxid\" : \"" + stat.getPzxid() + "\"");
|
||||
out.println(", \"children_count\" : \"" + stat.getNumChildren() + "\"");
|
||||
out.println(", \"ephemeralOwner\" : \"" + stat.getEphemeralOwner() + "\"");
|
||||
out.println(", \"dataLength\" : \"" + stat.getDataLength() + "\"");
|
||||
json.writeValueSeparator();
|
||||
json.writeString("prop");
|
||||
json.writeNameSeparator();
|
||||
json.startObject();
|
||||
writeKeyValue(json, "version", stat.getVersion(), true);
|
||||
writeKeyValue(json, "aversion", stat.getAversion(), false);
|
||||
writeKeyValue(json, "children_count", stat.getNumChildren(), false);
|
||||
writeKeyValue(json, "ctime", time(stat.getCtime()), false);
|
||||
writeKeyValue(json, "cversion", stat.getCversion(), false);
|
||||
writeKeyValue(json, "czxid", stat.getCzxid(), false);
|
||||
writeKeyValue(json, "dataLength", stat.getDataLength(), false);
|
||||
writeKeyValue(json, "ephemeralOwner", stat.getEphemeralOwner(), false);
|
||||
writeKeyValue(json, "mtime", time(stat.getMtime()), false);
|
||||
writeKeyValue(json, "mzxid", stat.getMzxid(), false);
|
||||
writeKeyValue(json, "pzxid", stat.getPzxid(), false);
|
||||
json.endObject();
|
||||
|
||||
if( stat.getDataLength() != 0 )
|
||||
{
|
||||
boolean isBinary = false;
|
||||
if (stat.getDataLength() != 0) {
|
||||
String str;
|
||||
try
|
||||
{
|
||||
try {
|
||||
str = new String(data, "UTF-8");
|
||||
}
|
||||
catch (UnsupportedEncodingException e)
|
||||
{
|
||||
} catch (UnsupportedEncodingException e) {
|
||||
// The results are unspecified
|
||||
// when the bytes are not properly encoded.
|
||||
|
||||
// not UTF8
|
||||
StringBuilder sb = new StringBuilder(data.length * 2);
|
||||
for (int i = 0; i < data.length; i++)
|
||||
{
|
||||
for (int i = 0; i < data.length; i++) {
|
||||
byte b = data[i];
|
||||
sb.append(StrUtils.HEX_DIGITS[(b >> 4) & 0xf]);
|
||||
sb.append(StrUtils.HEX_DIGITS[b & 0xf]);
|
||||
if ((i & 0x3f) == 0x3f)
|
||||
{
|
||||
if ((i & 0x3f) == 0x3f) {
|
||||
sb.append("\n");
|
||||
}
|
||||
}
|
||||
str = sb.toString();
|
||||
}
|
||||
str = str.replaceAll("\\\"", "\\\\\"");
|
||||
|
||||
out.print(", \"data\" : \"");
|
||||
//xmlescape(str);
|
||||
out.print(str);
|
||||
out.println("\"");
|
||||
writeKeyValue(json, "data", str, false);
|
||||
}
|
||||
|
||||
out.println("}");
|
||||
|
||||
json.endObject();
|
||||
} catch (KeeperException e) {
|
||||
writeError(500, e.toString());
|
||||
return false;
|
||||
} catch (InterruptedException e) {
|
||||
writeError(500, e.toString());
|
||||
return false;
|
||||
}
|
||||
catch (KeeperException e)
|
||||
{
|
||||
exception(e);
|
||||
return;
|
||||
}
|
||||
catch (InterruptedException e)
|
||||
{
|
||||
exception(e);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue