otter

{application,otter,
    [{description,"OpenTracing Toolkit for ERlang"},
     {vsn,"0.3.0"},
     {registered,[otter_sup,otter_snapshot_count,otter_conn_zipkin]},
     {mod,{otter_app,[]}},
     {applications,[kernel,stdlib,ibrowse,otter_lib]},
     {env,
         [{http_client,ibrowse},
          {zipkin_collector_uri,"http://127.0.0.1:9411/api/v1/spans"},
          {zipkin_batch_interval_ms,100},
          {zipkin_tag_host_ip,{127,0,0,1}},
          {zipkin_tag_host_port,0},
          {zipkin_tag_host_service,"otter_test"},
          {zipkin_add_host_tag_to_span,{"lc",[]}},
          {filter_rules,
              [{[{greater,otter_span_duration,1000000}],
                [{snapshot_count,[long_span],[otter_span_name]}]},
               {[],
                [{snapshot_count,[span_processed],[otter_span_name]},
                 send_to_zipkin]}]}]},
     {modules,[]},
     {maintainers,["Ferenc Holzhauser","Chandrashekhar Mullaparthi"]},
     {licenses,["Apache"]},
     {links,[{"Github","https://github.com/bluehouse-technology/otter"}]}]}.