Duplicate JSON key in RabbitMQ-3.6.5 Management API response

[Diptesh Chatterjee]

Hi,

I was trying to evaluate RabbtiMQ-3.6.5 and noticed a major issue there. I set up one RabbitMQ broker and issued the following query:

curl -X GET -u rabbit:rabbit http://localhost:15672/api/queues/%2F

The response looks as follows:

[{

"reductions": 214680,

"reductions_details": {

"rate": 553.0

},

"messages": 0,

"messages_details": {

"rate": 0.0

},

"messages_ready": 0,

"messages_ready_details": {

"rate": 0.0

},

"messages_unacknowledged": 0,

"messages_unacknowledged_details": {

"rate": 0.0

},

"policy": "ha-all",

"exclusive_consumer_tag": null,

"consumers": 0,

"consumer_utilisation": null,

"memory": 68232,

"slave_nodes": [],

"synchronised_slave_nodes": [],

"recoverable_slaves": [],

"state": "running",

"reductions": 214680,

"garbage_collection": {

"min_bin_vheap_size": 46422,

"min_heap_size": 233,

"fullsweep_after": 65535,

"minor_gcs": 7

},

"messages_ram": 0,

"messages_ready_ram": 0,

"messages_unacknowledged_ram": 0,

"messages_persistent": 0,

"message_bytes": 0,

"message_bytes_ready": 0,

"message_bytes_unacknowledged": 0,

"message_bytes_ram": 0,

"message_bytes_persistent": 0,

"head_message_timestamp": null,

"disk_reads": 0,

"disk_writes": 0,

"backing_queue_status": {

"mode": "default",

"q1": 0,

"q2": 0,

"delta": ["delta", "undefined", 0, "undefined"],

"q3": 0,

"q4": 0,

"len": 0,

"target_ram_count": "infinity",

"next_seq_id": 0,

"avg_ingress_rate": 0.0,

"avg_egress_rate": 0.0,

"avg_ack_ingress_rate": 0.0,

"avg_ack_egress_rate": 0.0,

"mirror_seen": 0,

"mirror_senders": 0

},

"node": "rabbit@node1",

"arguments": {},

"exclusive": false,

"auto_delete": false,

"durable": true,

"vhost": "/",

"name": "test"

}

]

As you can see from the lines in bold, the key "reductions" occurs twice in the JSON and this causes JSON parsing to fail while using the org.json library. Is there any plan to fix this bug soon?

[François Abraham]

Hello,

i have the same issue with RabbitMQ-3.6.5 : duplicate key 'reductions' in JSON stream that generate org.json.JSONException while parsing.

Could you please find a bugfix soon ?

Thanx

[Michael Klishin]

I cannot reproduce with

curl -X GET -u guest:guest http://localhost:15672/api/queues/%2F | python -m json.tool

or by running Hop's [1] test suite against it.

Can you please provide `rabbitmqctl status` and `rabbitmqctl environment` output?

1. https://github.com/rabbitmq/hop

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MK

Staff Software Engineer, Pivotal/RabbitMQ

[Abraham, François]

Hello,

i have downgraded my RabbitMQ version to 3.6.4 and i've got the same issue.

Microsoft Windows [version 6.1.7601]

Copyright (c) 2009 Microsoft Corporation. Tous droits réservés.

C:\Program Files (x86)\RabbitMQ Server\rabbitmq_server-3.6.4>rabbitmqctl status

Status of node 'RabbitMQ@PT8119' ...

[{pid,8004},

 {running_applications,

     [{rabbitmq_management,"RabbitMQ Management Console","3.6.4"},

      {rabbitmq_web_dispatch,"RabbitMQ Web Dispatcher","3.6.4"},

      {webmachine,"webmachine","1.10.3"},

      {mochiweb,"MochiMedia Web Server","2.13.1"},

      {rabbitmq_web_stomp,"Rabbit WEB-STOMP - WebSockets to Stomp adapter",

          "3.6.4"},

      {rabbitmq_management_agent,"RabbitMQ Management Agent","3.6.4"},

      {rabbitmq_stomp,"RabbitMQ STOMP plugin","3.6.4"},

      {rabbit,"RabbitMQ","3.6.4"},

      {amqp_client,"RabbitMQ AMQP Client","3.6.4"},

      {sockjs,"SockJS","0.3.4"},

      {xmerl,"XML parser","1.3.11"},

      {ssl,"Erlang/OTP SSL application","8.0"},

      {cowboy,"Small, fast, modular HTTP server.","1.0.3"},

      {ranch,"Socket acceptor pool for TCP protocols.","1.2.1"},

      {os_mon,"CPO  CXC 138 46","2.4.1"},

      {compiler,"ERTS  CXC 138 10","7.0"},

      {rabbit_common,[],"3.6.4"},

      {cowlib,"Support library for manipulating Web protocols.","1.0.1"},

      {public_key,"Public key infrastructure","1.2"},

      {crypto,"CRYPTO","3.7"},

      {inets,"INETS  CXC 138 49","6.3"},

      {asn1,"The Erlang ASN1 compiler version 4.0.3","4.0.3"},

      {mnesia,"MNESIA  CXC 138 12","4.14"},

      {syntax_tools,"Syntax tools","2.0"},

      {sasl,"SASL  CXC 138 11","3.0"},

      {stdlib,"ERTS  CXC 138 10","3.0"},

      {kernel,"ERTS  CXC 138 10","5.0"}]},

 {os,{win32,nt}},

 {erlang_version,

     "Erlang/OTP 19 [erts-8.0] [64-bit] [smp:4:4] [async-threads:64]\n"},

 {memory,

     [{total,58870448},

      {connection_readers,69344},

      {connection_writers,2720},

      {connection_channels,12080},

      {connection_other,59376},

      {queue_procs,70064},

      {queue_slave_procs,0},

      {plugins,1283856},

      {other_proc,17594400},

      {mnesia,82352},

      {mgmt_db,1051088},

      {msg_index,52560},

      {other_ets,1591152},

      {binary,235760},

      {code,25808005},

      {atom,1041593},

      {other_system,9916098}]},

 {alarms,[]},

 {listeners,

     [{clustering,25672,"::"},

      {amqp,5672,"::"},

      {amqp,5672,"0.0.0.0"},

      {stomp,61613,"::"},

      {stomp,61613,"0.0.0.0"}]},

 {vm_memory_high_watermark,0.3},

 {vm_memory_limit,2541907968},

 {disk_free_limit,50000000},

 {disk_free,287420657664},

 {file_descriptors,

     [{total_limit,8092},

      {total_used,4},

      {sockets_limit,7280},

      {sockets_used,2}]},

 {processes,[{limit,1048576},{used,341}]},

 {run_queue,0},

 {uptime,188},

 {kernel,{net_ticktime,60}}]

C:\Program Files (x86)\RabbitMQ Server\rabbitmq_server-3.6.4>rabbitmqctl environment

Application environment of node 'RabbitMQ@PT8119' ...

[{amqp_client,[{prefer_ipv6,false},{ssl_options,[]}]},

 {asn1,[]},

 {compiler,[]},

 {cowboy,[]},

 {cowlib,[]},

 {crypto,[]},

 {inets,[]},

 {kernel,

     [{error_logger,tty},

      {inet_default_connect_options,[{nodelay,true}]},

      {inet_dist_listen_max,25672},

      {inet_dist_listen_min,25672}]},

 {mnesia,[{dir,"C:/SavoyeSHY/rabbitmq/db/RABBIT~2"}]},

 {mochiweb,[]},

 {os_mon,

     [{start_cpu_sup,false},

      {start_disksup,false},

      {start_memsup,false},

      {start_os_sup,false}]},

 {public_key,[]},

 {rabbit,

     [{auth_backends,[rabbit_auth_backend_internal]},

      {auth_mechanisms,['PLAIN','AMQPLAIN']},

      {backing_queue_module,rabbit_priority_queue},

      {channel_max,128},

      {channel_operation_timeout,15000},

      {cluster_keepalive_interval,10000},

      {cluster_nodes,{[],disc}},

      {cluster_partition_handling,ignore},

      {collect_statistics,fine},

      {collect_statistics_interval,10000},

      {credit_flow_default_credit,{200,50}},

      {default_permissions,[<<".*">>,<<".*">>,<<".*">>]},

      {default_user,<<"guest">>},

      {default_user_tags,[administrator]},

      {default_vhost,<<"/">>},

      {delegate_count,16},

      {disk_free_limit,50000000},

      {enabled_plugins_file,"C:/SavoyeSHY/rabbitmq/ENABLE~1"},

      {error_logger,{file,"C:/SavoyeSHY/rabbitmq/log/RabbitMQ.log"}},

      {fhc_read_buffering,false},

      {fhc_write_buffering,true},

      {frame_max,131072},

      {halt_on_upgrade_failure,true},

      {handshake_timeout,10000},

      {heartbeat,600},

      {hipe_compile,false},

      {hipe_modules,

          [rabbit_reader,rabbit_channel,gen_server2,rabbit_exchange,

           rabbit_command_assembler,rabbit_framing_amqp_0_9_1,rabbit_basic,

           rabbit_event,lists,queue,priority_queue,rabbit_router,rabbit_trace,

           rabbit_misc,rabbit_binary_parser,rabbit_exchange_type_direct,

           rabbit_guid,rabbit_net,rabbit_amqqueue_process,

           rabbit_variable_queue,rabbit_binary_generator,rabbit_writer,

           delegate,gb_sets,lqueue,sets,orddict,rabbit_amqqueue,

           rabbit_limiter,gb_trees,rabbit_queue_index,

           rabbit_exchange_decorator,gen,dict,ordsets,file_handle_cache,

           rabbit_msg_store,array,rabbit_msg_store_ets_index,rabbit_msg_file,

           rabbit_exchange_type_fanout,rabbit_exchange_type_topic,mnesia,

           mnesia_lib,rpc,mnesia_tm,qlc,sofs,proplists,credit_flow,pmon,

           ssl_connection,tls_connection,ssl_record,tls_record,gen_fsm,ssl]},

      {log_levels,[{connection,info},{channel,info}]},

      {loopback_users,[]},

      {memory_monitor_interval,2500},

      {mirroring_flow_control,true},

      {mirroring_sync_batch_size,4096},

      {mnesia_table_loading_timeout,30000},

      {msg_store_credit_disc_bound,{2000,500}},

      {msg_store_file_size_limit,16777216},

      {msg_store_index_module,rabbit_msg_store_ets_index},

      {msg_store_io_batch_size,2048},

      {num_ssl_acceptors,1},

      {num_tcp_acceptors,10},

      {password_hashing_module,rabbit_password_hashing_sha256},

      {plugins_dir,"C:/PROGRA~2/RABBIT~1/RABBIT~1.4/plugins"},

      {plugins_expand_dir,"C:/SavoyeSHY/rabbitmq/db/RabbitMQ-plugins-expand"},

      {queue_index_embed_msgs_below,4096},

      {queue_index_max_journal_entries,32768},

      {reverse_dns_lookups,true},

      {sasl_error_logger,{file,"C:/SavoyeSHY/rabbitmq/log/RABBIT~1.LOG"}},

      {server_properties,[]},

      {ssl_allow_poodle_attack,false},

      {ssl_apps,[asn1,crypto,public_key,ssl]},

      {ssl_cert_login_from,distinguished_name},

      {ssl_handshake_timeout,5000},

      {ssl_listeners,[]},

      {ssl_options,[]},

      {tcp_listen_options,

          [{backlog,128},

           {nodelay,true},

           {linger,{true,0}},

           {exit_on_close,false}]},

      {tcp_listeners,[5672]},

      {trace_vhosts,[]},

      {vm_memory_high_watermark,0.3},

      {vm_memory_high_watermark_paging_ratio,0.5},

      {windows_service_config,"C:/SavoyeSHY/rabbitmq/rabbitmq"}]},

 {rabbit_common,[]},

 {rabbitmq_management,

     [{cors_allow_origins,[]},

      {cors_max_age,1800},

      {http_log_dir,"/tmp/rabbit-mgmt"},

      {listener,[{port,15672}]},

      {load_definitions,none},

      {process_stats_gc_timeout,300000},

      {rates_mode,basic},

      {sample_retention_policies,

          [{global,[{605,5},{3660,60},{29400,600},{86400,1800}]},

           {basic,[{605,5},{3600,60}]},

           {detailed,[{10,5}]}]},

      {stats_event_max_backlog,250}]},

 {rabbitmq_management_agent,[]},

 {rabbitmq_stomp,

     [{default_user,[{login,"guest"},{passcode,"guest"}]},

      {default_vhost,<<"/">>},

      {hide_server_info,false},

      {implicit_connect,true},

      {num_ssl_acceptors,1},

      {num_tcp_acceptors,10},

      {ssl_cert_login,false},

      {ssl_listeners,[]},

      {tcp_listen_options,[{backlog,128},{nodelay,true}]},

      {tcp_listeners,[61613]},

      {trailing_lf,true}]},

 {rabbitmq_web_dispatch,[]},

 {rabbitmq_web_stomp,

     [{cowboy_opts,[]},

      {num_ssl_acceptors,1},

      {num_tcp_acceptors,10},

      {port,15674},

      {sockjs_opts,[]},

      {ssl_config,[]},

      {tcp_config,[]},

      {use_http_auth,false},

      {ws_frame,text}]},

 {ranch,[]},

 {sasl,[{errlog_type,error},{sasl_error_logger,false}]},

 {sockjs,[]},

 {ssl,[]},

 {stdlib,[]},

 {syntax_tools,[]},

 {webmachine,[{error_handler,rabbit_webmachine_error_handler}]},

 {xmerl,[]}]

I have management, stomp and webstomp plugins enabled.

Regards, François 

François Abraham 

Chef de projet solution WCS 

59 59 / +33 (0)3 20 11 35 59 / +33 (0)6 81 38 83 25 

francois...@a-sis.com 

a-SIS 

8 Rue de La Richelandière - F42100 SAINT ETIENNE 

Tel : +33 (0)4 77 49 47 00 

Fax : +33 (0)4 77 49 47 10 

www.a-sis.fr 

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MK

Staff Software Engineer, Pivotal/RabbitMQ

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[Gabriele Santomaggio]

Hi,

We can reproduced the issue.

github issue: https://github.com/rabbitmq/rabbitmq-management/issues/278

Regards

-
Gabriele

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[Michael Klishin]

Note that it doesn't affect quite a few JSON parsers out there, for example, 3 HTTP API clients we use

as additional test suites are not affected.

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