commit 54ce17312f53c9b2a1ac3ea83303a7bebebc0a31
author Hugo Abreu <6619758+hugomiguelabreu@users.noreply.github.com> Fri Jun 21 04:22:33 2019 +0100
committer Sijie Guo <guosijie@gmail.com> Thu Jun 20 20:22:33 2019 -0700
tree 2ea9ab1ceff6c4e2715ba24429cfdb5f45e5484f
parent 96fc2e2aac4d026fe336ae8347521d9910165dd5

Added zookeeper host configuration. Closes #1960

Descriptions of the changes in this PR:
Added host IP binding to sandbox.

### Motivation
Allowing running the sandbox inside guest machines and be accessible by all system (including other guest machines). When binding 127.0.0.1 other guest machines will experience an error. By allowing to bind the correct IP the namespace will be available and correctly configured for other hosts.

### Changes
Added a new argument to the _dlog_ tool allowing to define the host IP to bind ZooKeeper and DistributedLog namespace.

Master Issue: #1960




Reviewers: Enrico Olivelli <eolivelli@gmail.com>, Sijie Guo <sijie@apache.org>

This closes #2081 from hugomiguelabreu/master, closes #1960

stream/distributedlog/core/src/main/java/org/apache/distributedlog/LocalDLMEmulator.java

diff --git a/stream/distributedlog/core/src/main/java/org/apache/distributedlog/LocalDLMEmulator.java b/stream/distributedlog/core/src/main/java/org/apache/distributedlog/LocalDLMEmulator.java
index dc014f1..61bc231 100644
--- a/stream/distributedlog/core/src/main/java/org/apache/distributedlog/LocalDLMEmulator.java
+++ b/stream/distributedlog/core/src/main/java/org/apache/distributedlog/LocalDLMEmulator.java
@@ -308,13 +308,22 @@
     public static void main(String[] args) throws Exception {
         try {
             if (args.length < 1) {
-                System.out.println("Usage: LocalDLEmulator <zk_port>");
+                System.out.println("Usage: LocalDLEmulator [<zk_host>] <zk_port>");
                 System.exit(-1);
             }
 
-            final int zkPort = Integer.parseInt(args[0]);
+            String zkHost = DEFAULT_ZK_HOST;
+            int zkPort = DEFAULT_ZK_PORT;
+            if (args.length == 1) {
+                zkPort = Integer.parseInt(args[0]);
+            } else {
+                zkHost = args[0];
+                zkPort = Integer.parseInt(args[1]);
+            }
+
             final File zkDir = IOUtils.createTempDir("distrlog", "zookeeper");
             final LocalDLMEmulator localDlm = LocalDLMEmulator.newBuilder()
+                .zkHost(zkHost)
                 .zkPort(zkPort)
                 .build();
 
@@ -334,7 +343,7 @@
 
             System.out.println(String.format(
                 "DistributedLog Sandbox is running now. You could access distributedlog://%s:%s",
-                DEFAULT_ZK_HOST,
+                zkHost,
                 zkPort));
         } catch (Exception ex) {
             System.out.println("Exception occurred running emulator " + ex);