[GitHub] [zookeeper] eolivelli commented on a change in pull request #940: ZOOKEEPER-3386: Add admin command to display voting view

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

eolivelli commented on a change in pull request #940: ZOOKEEPER-3386: Add admin command to display voting view
URL: https://github.com/apache/zookeeper/pull/940#discussion_r300806012
 
 

 ##########
 File path: zookeeper-server/src/main/java/org/apache/zookeeper/server/admin/Commands.java
 ##########
 @@ -607,12 +609,40 @@ public CommandResponse run(ZooKeeperServer zkServer, Map<String, String> kwargs)
             CommandResponse response = initializeResponse();
             if (zkServer instanceof QuorumZooKeeperServer) {
                 QuorumPeer peer = ((QuorumZooKeeperServer) zkServer).self;
-                response.put("current_config", peer.getVotingView());
+                VotingView votingView = new VotingView(peer.getVotingView());
+                response.put("current_config", votingView);
             } else {
                 response.put("current_config", "");
             }
             return response;
         }
+
+
+        private static class VotingView {
+            final String stringRepresentation;
+
+            VotingView(Map<Long,QuorumPeer.QuorumServer> view) {
+                this.stringRepresentation = view.entrySet().stream()
+                        .sorted(Comparator.comparingLong(Map.Entry::getKey))
+                        .filter(e -> e.getValue().addr != null)
+                        .map(e -> String.format("%s=%s:%d%s:%s%s",
+                                e.getKey().toString(),
+                                QuorumPeer.QuorumServer.delimitedHostString(e.getValue().addr),
+                                e.getValue().addr.getPort(),
+                                e.getValue().electionAddr == null ? "" : ":" + e.getValue().electionAddr.getPort(),
+                                e.getValue().type.equals(QuorumPeer.LearnerType.PARTICIPANT) ? "participant" : "observer",
+                                e.getValue().clientAddr ==null || e.getValue().isClientAddrFromStatic ? "" :
+                                        String.format(";%s:%d",
+                                                QuorumPeer.QuorumServer.delimitedHostString(e.getValue().clientAddr),
+                                                e.getValue().clientAddr.getPort())))
+                        .collect(Collectors.joining(", "));
+            }
+
+            @Override
+            public String toString() {
+                return "{" + stringRepresentation + "}";
+            }
+        }
     }
 
 
 Review comment:
   It is not a parse error but a serialization error, Jackson is not able to serialize a VotingView, I guess because it does not have any getter.

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