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to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
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  http://www.apache.org/licenses/LICENSE-2.0

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KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
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{{> www/common-header.tmpl }}

<h2>RPC durations</h2>

<p class="lead">This page shows the durations of all RPCs served by this
 <samp>{{__common__.process-name}}</samp> process.
</p>

<label>
  <input type="checkbox" checked="true" id="toggle" onClick="toggleRefresh()"/>
  <span id="refresh_on">Auto-refresh on</span>
</label>  Last updated: <span id="last-updated"></span>

{{?services}}
<h2>KRPC Services</h2>
{{/services}}
{{#services}}
<h3><samp>{{service_name}}</samp></h3>
<table class="table table-hover table-bordered" id="{{service_name}}_metrics">
  <tbody>
  <tr>
    <td>
      <table class="table table-hover">
        <tr>
          <th>Queue Size</th>
          <th>Idle Threads</th>
          <th>Current Memory Usage</th>
          <th>Peak Memory Usage</th>
          <th>RPCs Rejected due to Queue Overflow</th>
        </tr>
        <tr>
          <td id="{{service_name}}_queue_size">{{queue_size}}</td>
          <td id="{{service_name}}_idle_threads">{{idle_threads}}</td>
          <td id="{{service_name}}_mem_usage">{{mem_usage}}</td>
          <td id="{{service_name}}_mem_peak">{{mem_peak}}</td>
          <td id="{{service_name}}_rpcs_queue_overflow">{{rpcs_queue_overflow}}</td>
        </tr>
      </table>
      <table class="table table-hover">
        <tr>
          <th>Incoming Queueing Time</th>
          <td id="{{service_name}}_incoming_queue_time" colspan=2>{{incoming_queue_time}}
          </td>
        </tr>
      </table>
    </td>
  </tr>
  <tr>
    <td>
    {{#rpc_method_metrics}}
      <table class="table table-bordered table-hover">
        <tr><td colspan=2>
          <strong>Method: <i>{{method_name}}</i></strong>
        </td></tr>
        <tr>
          <td>Handler Latency</td>
          <td class="{{method_name}}_handler_latency">{{handler_latency}}</td>
        </tr>
        <tr>
          <td>Payload Size</td>
          <td class="{{method_name}}_payload_size">{{payload_size}}</td>
        </tr>
      </table>
    {{/rpc_method_metrics}}
    </td>
  </tr>
  </tbody>
</table>
{{/services}}

<h3>Per connection metrics for KRPC</h3>
<table class="table table-bordered table-hover" id="per_conn_metrics">
  <thead>
    <tr>
      <th>Remote IP</th>
      <th>Outbound Queue Size (count)</th>
    </tr>
  </thead>
  <tbody>
    {{#per_conn_metrics}}
    <tr>
      <td>{{remote_ip}}</td>
      <td>{{outbound_queue_size}}</td>
    </tr>
    {{/per_conn_metrics}}
  </tbody>
</table>

{{?servers}}
<h2>Impala Thrift RPC Services
  <button class="btn btn-warning btn-xs" onClick="reset_all();">
    Reset all
  </button>
</h2>
{{/servers}}
{{#servers}}

<h3><samp>{{name}} </samp>
  <button class="btn btn-warning btn-xs" onClick="reset_server('{{name}}');">
    Reset stats
  </button>
</h3>

<table class='table table-hover table-bordered' id='{{name}}'>
  <tr>
    <th>Method</th>
    <th>Duration summary</th>
    <th>In Flight</th>
    <th></th>
  </tr>
  {{#methods}}
  <tr>
    <td><samp>{{name}}</samp></td>
    <td>{{summary}}</td>
    <td>{{in_flight}}</td>
    <td align="center">
      <button class="btn btn-warning btn-xs"
              onClick="reset_method('{{server_name}}', '{{name}}');">
        Reset
      </button>
    </td>
  </tr>
  {{/methods}}
</table>
{{/servers}}

<script>
function reset_all() {
  var xhr = new XMLHttpRequest();
  xhr.open('GET', make_url("/rpcz_reset"), true);
  xhr.send();
}

function reset_method(server, method) {
  var xhr = new XMLHttpRequest();
  xhr.open('GET', make_url("/rpcz_reset?server=" + server + "&method=" + method), true);
  xhr.send();
}

function reset_server(server) {
  var xhr = new XMLHttpRequest();
  xhr.open('GET', make_url("/rpcz_reset?server=" + server), true);
  xhr.send();
}

// Update all metrics for services in "servers", which use Impala's old RPC layer.
function update_impala_services(json) {
  for (var i = 0; i < json["servers"].length; ++i) {
    var tbl_json = json["servers"][i];
    var table = document.getElementById(tbl_json["name"]);
    if (!table) continue;
    // Delete all existing rows, stopping at 1 to save the header
    for (var j = table.rows.length - 1; j >= 1; --j) table.deleteRow(j);
    tbl_json["methods"].forEach(function(method) {
      var row = table.insertRow();
      row.insertCell().innerHTML = "<samp>" + method.name + "</samp>";
      row.insertCell().innerHTML = method.summary;
      row.insertCell().innerHTML = method.in_flight;
      var reset_cell = row.insertCell();
      reset_cell.align = "center";
      var button = document.createElement("button");
      button.className = "btn btn-warning btn-xs";
      button.appendChild(document.createTextNode("Reset"));
      button.onclick = function() { reset_method(method.server_name, method.name); }
      reset_cell.appendChild(button);
    });
  }
}

// Update all krpc metrics from the "services" member of "json".
function update_krpc_services(json) {
  if (!json["services"]) return;
  // Update each service
  for (var i = 0; i < json["services"].length; ++i) {
    var svc_json = json["services"][i];
    var svc_name = svc_json["service_name"];
    var table = document.getElementById(svc_name + "_metrics");

    // Skip updates for unknown services.
    if (!table) continue;

    // Update service metrics
    var keys = ["queue_size", "idle_threads", "mem_usage", "mem_peak",
        "rpcs_queue_overflow", "incoming_queue_time"];
    for (var j = 0; j < keys.length; ++j) {
      var key = keys[j];
      var cell = document.getElementById(svc_name + "_" + key);
      // Skip update for unknown values.
      if (!cell) continue;
      cell.innerHTML = svc_json[key];
    }

    // Update metrics for individual methods.
    var num_methods = svc_json["rpc_method_metrics"].length;
    for (var j = 0; j < num_methods; ++j) {
      var method_json = svc_json["rpc_method_metrics"][j];
      var method_name = method_json["method_name"];
      // Update all metrics for this method.
      var keys = ["handler_latency", "payload_size"];
      for (var l = 0; l < keys.length; ++l) {
        var key = keys[l];
        var cell = $(table).find("." + method_name + "_" + key)[0];
        // Skip update for unknown values.
        if (!cell) continue;
        cell.innerHTML = method_json[key];
      }
    }
  }
}

function update_krpc_conn_metrics_datatable(json) {
  var table = $('#per_conn_metrics').DataTable();
  var rows = $.map(json["per_conn_metrics"], function(row) {
    return [[row["remote_ip"], row["outbound_queue_size"]]];
  });

  table.clear().rows.add(rows).draw();
}

$(document).ready(function() {
  table = $('#per_conn_metrics').DataTable({
    "order": [[ 0, "asc" ]],
    "pageLength": 50
  });
});

function refresh() {
  var xhr = new XMLHttpRequest();
  xhr.responseType = 'text';
  xhr.timeout = 60000;
  xhr.onload = function(ignored_arg) {
    if (xhr.status != 200) return;
    var blob = xhr.response;
    json = JSON.parse(blob);
    update_impala_services(json);
    update_krpc_services(json);
    update_krpc_conn_metrics_datatable(json);
    document.getElementById("last-updated").textContent = new Date();
  }

  xhr.ontimeout = function() {}
  xhr.open('GET', make_url("/rpcz?json"), true);
  xhr.send();
}

document.getElementById("last-updated").textContent = new Date();
var intervalId = setInterval(refresh, 1000);

function toggleRefresh() {
  if (document.getElementById("toggle").checked == true) {
    intervalId = setInterval(refresh, 1000);
    document.getElementById("refresh_on").textContent = "Auto-refresh on";
  } else {
    clearInterval(intervalId);
    document.getElementById("refresh_on").textContent = "Auto-refresh off";
  }
}
</script>

{{> www/common-footer.tmpl }}