chrome/browser/resources/about_invalidations.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 cr.define('chrome.invalidations', function() {
   6   /**
   7    * Local variable where we maintain a count of the invalidations received
   8    * and of every ObjectId that has ever been updated (note that this doesn't
   9    * log any invalidations ocurred prior to opening the about:invalidation
  10    * page).
  11    */
  12   var tableObjects = {};
  13
  14   /**
  15    * Local variable that contains the detailed information in an object form.
  16    * This was done this way as to allow multiple calls to updateDetailedStatus
  17    * to keep adding new items.
  18    */
  19   var cachedDetails = {};
  20
  21   function quote(str) {
  22     return '\"' + str + '\"';
  23   }
  24
  25   function nowTimeString() {
  26     return '[' + new Date().getTime() + '] ';
  27   }
  28
  29   /**
  30    * Appends a string to a textarea log.
  31    * @param {string} logMessage The string to be appended.
  32    */
  33   function appendToLog(logMessage) {
  34     var invalidationsLog = $('invalidations-log');
  35     invalidationsLog.value += logMessage + '\n';
  36   }
  37   /**
  38    *  Updates the jstemplate with the latest ObjectIds, ordered by registrar.
  39    */
  40   function repaintTable() {
  41     var keys = [];
  42     for (var key in tableObjects) {
  43       keys.push(key);
  44     }
  45     keys.sort();
  46     var sortedInvalidations = [];
  47     for (var i = 0; i < keys.length; i++) {
  48       sortedInvalidations.push(tableObjects[keys[i]]);
  49     }
  50     var wrapped = { objectsidtable: sortedInvalidations };
  51     jstProcess(new JsEvalContext(wrapped), $('objectsid-table-div'));
  52   }
  53
  54   /**
  55    * Shows the current state of the InvalidatorService.
  56    * @param {string} newState The string to be displayed and logged.
  57    * @param {number} lastChangedTime The time in epoch when the state was last
  58    *     changed.
  59    */
  60   function updateInvalidatorState(newState, lastChangedTime) {
  61     var logMessage = nowTimeString() +
  62       'Invalidations service state changed to ' + quote(newState);
  63
  64     appendToLog(logMessage);
  65     $('invalidations-state').textContent = newState + ' (since ' +
  66         new Date(lastChangedTime) + ')';
  67   }
  68
  69   /**
  70    * Adds to the log the latest invalidations received
  71    * @param {!Array.<!Object>} allInvalidations The array of ObjectId
  72    *     that contains the invalidations received by the InvalidatorService.
  73    */
  74   function logInvalidations(allInvalidations) {
  75     for (var i = 0; i < allInvalidations.length; i++) {
  76       var inv = allInvalidations[i];
  77       if (inv.hasOwnProperty('objectId')) {
  78         var logMessage = nowTimeString() +
  79           'Received Invalidation with type ' +
  80           quote(inv.objectId.name) +
  81           ' version ' +
  82           quote((inv.isUnknownVersion ? 'Unknown' : inv.version)) +
  83           ' with payload ' +
  84           quote(inv.payload);
  85
  86         appendToLog(logMessage);
  87         var isInvalidation = true;
  88         logToTable(inv, isInvalidation);
  89       }
  90     }
  91     repaintTable();
  92   }
  93
  94   /**
  95    * Marks a change in the table whether a new invalidation has arrived
  96    * or a new ObjectId is currently being added or updated.
  97    * @param {!Object} oId The ObjectId being added or updated.
  98    * @param {!boolean} isInvaldation A flag that says that an invalidation
  99    *     for this ObjectId has arrived or we just need to add it to the table
 100    *     as it was just updated its state.
 101    */
 102   function logToTable(oId, isInvalidation) {
 103     var registrar = oId.registrar;
 104     var name = oId.objectId.name;
 105     var source = oId.objectId.source;
 106     var totalCount = oId.objectId.totalCount || 0;
 107     var key = source + '-' + name;
 108     var time = new Date();
 109     var version = oId.isUnknownVersion ? '?' :
 110       oId.version;
 111     var payload = '';
 112     if (oId.hasOwnProperty('payload'))
 113       payload = oId.payload;
 114     if (!(key in tableObjects)) {
 115       tableObjects[key] = {
 116         name: name,
 117         source: source,
 118         totalCount: totalCount,
 119         sessionCount: 0,
 120         registrar: registrar,
 121         time: '',
 122         version: '',
 123         payload: '',
 124         type: 'content'
 125       };
 126     }
 127     // Refresh the type to be a content because it might have been
 128     // greyed out.
 129     tableObjects[key].type = 'content';
 130     if (isInvalidation) {
 131       tableObjects[key].totalCount = tableObjects[key].totalCount + 1;
 132       tableObjects[key].sessionCount = tableObjects[key].sessionCount + 1;
 133       tableObjects[key].time = time.toTimeString();
 134       tableObjects[key].version = version;
 135       tableObjects[key].payload = payload;
 136     }
 137   }
 138
 139   /**
 140    * Shows the handlers that are currently registered for invalidations
 141    * (but might not have objects ids registered yet).
 142    * @param {!Array.<string>} allHandlers An array of Strings that are
 143    *     the names of all the handlers currently registered in the
 144    *     InvalidatorService.
 145    */
 146   function updateHandlers(allHandlers) {
 147     var allHandlersFormatted = allHandlers.join(', ');
 148     $('registered-handlers').textContent = allHandlersFormatted;
 149     var logMessage = nowTimeString() +
 150         'InvalidatorHandlers currently registered: ' + allHandlersFormatted;
 151     appendToLog(logMessage);
 152   }
 153
 154   /**
 155    * Updates the table with the objects ids registered for invalidations
 156    * @param {string} registrar The name of the owner of the InvalidationHandler
 157    *     that is registered for invalidations
 158    * @param {Array of Object} allIds An array of ObjectsIds that are currently
 159    *     registered for invalidations. It is not differential (as in, whatever
 160    *     is not registered now but was before, it mean it was taken out the
 161    *     registered objects)
 162    */
 163   function updateIds(registrar, allIds) {
 164     // Grey out every datatype assigned to this registrar
 165     // (and reenable them later in case they are still registered).
 166     for (var key in tableObjects) {
 167       if (tableObjects[key]['registrar'] === registrar)
 168         tableObjects[key].type = 'greyed';
 169     }
 170     // Reenable those ObjectsIds still registered with this registrar.
 171     for (var i = 0; i < allIds.length; i++) {
 172       var oId = { objectId: allIds[i], registrar: registrar };
 173       var isInvalidation = false;
 174       logToTable(oId, isInvalidation);
 175     }
 176     repaintTable();
 177   }
 178
 179   /**
 180    * Update the internal status display, merging new detailed information.
 181    * @param {!Object} newDetails The dictionary containing assorted debugging
 182    *      details (e.g. Network Channel information).
 183    */
 184   function updateDetailedStatus(newDetails) {
 185     for (var key in newDetails) {
 186       cachedDetails[key] = newDetails[key];
 187     }
 188     $('internal-display').value = JSON.stringify(cachedDetails, null, 2);
 189   }
 190
 191   /**
 192    * Function that notifies the InvalidationsMessageHandler that the UI is
 193    * ready to receive real-time notifications.
 194    */
 195   function onLoadWork() {
 196     $('request-detailed-status').onclick = function() {
 197       cachedDetails = {};
 198       chrome.send('requestDetailedStatus');
 199     };
 200     chrome.send('doneLoading');
 201   }
 202
 203   return {
 204     logInvalidations: logInvalidations,
 205     onLoadWork: onLoadWork,
 206     updateDetailedStatus: updateDetailedStatus,
 207     updateHandlers: updateHandlers,
 208     updateIds: updateIds,
 209     updateInvalidatorState: updateInvalidatorState,
 210   };
 211 });
 212
 213 document.addEventListener('DOMContentLoaded', chrome.invalidations.onLoadWork);