[GitHub] [hbase] Apache9 commented on a change in pull request #1292: HBASE-23994:Add WebUI to Canary

[GitBox <gi...@apache.org>]

Apache9 commented on a change in pull request #1292: HBASE-23994:Add WebUI to Canary
URL: https://github.com/apache/hbase/pull/1292#discussion_r398291625
 
 

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 File path: hbase-server/src/main/java/org/apache/hadoop/hbase/tool/CanaryTool.java
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 @@ -123,6 +127,31 @@
 @InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.TOOLS)
 public class CanaryTool implements Tool, Canary {
 
+
+  private void putUpWebUI() throws IOException {
+    if (zookeeperMode) {
+      LOG.info("WebUI is not supported in Zookeeper mode");
+    } else if (regionServerMode) {
+      LOG.info("WebUI is not supported in RegionServer mode");
+    } else {
+      Configuration conf = new Configuration();
+      int port = conf.getInt(HConstants.HBASE_CANARY_INFO_PORT, DEFAULT_CANARY_INFOPORT);
+      // -1 is for disabling info server
+      if (port < 0) return;
+      String addr = conf.get(HBASE_CANARY_INFO_BINDADDRESS, "0.0.0.0");
+      try {
+        InfoServer infoServer = new InfoServer("canary", addr, port, false, conf);
+        infoServer.addUnprivilegedServlet("canary", "/canary-status", CanaryStatusServlet.class);
+        infoServer.setAttribute("sink", this.sink);
+        infoServer.start();
+        LOG.info("Bind Canary http info server to port: " + port);
+      } catch (BindException e) {
+        e.printStackTrace();
 
 Review comment:
   Avoid using e.printStackTrace directly?

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