GeorryHuang commented on a change in pull request #1292: HBASE-23994:Add WebUI
to Canary
URL: https://github.com/apache/hbase/pull/1292#discussion_r406766094
##########
File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/tool/CanaryTool.java
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@@ -122,6 +125,35 @@
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.TOOLS)
public class CanaryTool implements Tool, Canary {
+ public static final String HBASE_CANARY_INFO_PORT = "hbase.canary.info.port";
+
+ public static final int DEFAULT_CANARY_INFOPORT = 16050;
+
+ public static final String HBASE_CANARY_INFO_BINDADDRESS =
"hbase.canary.info.bindAddress";
+
+
+ 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(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);
Review comment:
> Might as well print out the full socket address (bind address:port)
Good iead!
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