gecko-dev/toolkit/components/telemetry/nsITelemetry.idl

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/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Firefox.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation <http://www.mozilla.org>.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Taras Glek <tglek@mozilla.com>
* Vladan Djeric <vdjeric@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsISupports.idl"
#include "nsIFile.idl"
[scriptable, uuid(02719ffb-1a87-46cd-b8d3-5583f3267b32)]
interface nsITelemetrySessionData : nsISupports
{
/**
* The UUID of our previous session.
*/
readonly attribute ACString uuid;
/**
* An object containing a snapshot from all registered histograms that had
* data recorded in the previous session.
* { name1: data1, name2: data2, .... }
* where the individual dataN are as nsITelemetry.histogramSnapshots.
*/
[implicit_jscontext]
readonly attribute jsval snapshots;
};
[scriptable, function, uuid(aff36c9d-7e4c-41ab-a9b6-53773bbca0cd)]
interface nsITelemetryLoadSessionDataCallback : nsISupports
{
void handle(in nsITelemetrySessionData data);
};
[scriptable, function, uuid(40065f26-afd2-4417-93de-c1de9adb1548)]
interface nsITelemetrySaveSessionDataCallback : nsISupports
{
void handle(in bool success);
};
[scriptable, uuid(f23a2c8d-9286-42e9-ab1b-ed287eeade6d)]
interface nsITelemetry : nsISupports
{
/**
* Histogram types:
* HISTOGRAM_EXPONENTIAL - buckets increase exponentially
* HISTOGRAM_LINEAR - buckets increase linearly
* HISTOGRAM_BOOLEAN - For storing 0/1 values
* HISTOGRAM_FLAG - For storing a single value; its count is always == 1.
*/
const unsigned long HISTOGRAM_EXPONENTIAL = 0;
const unsigned long HISTOGRAM_LINEAR = 1;
const unsigned long HISTOGRAM_BOOLEAN = 2;
const unsigned long HISTOGRAM_FLAG = 3;
/*
* An object containing a snapshot from all of the currently registered histograms.
* { name1: {data1}, name2:{data2}...}
* where data is consists of the following properties:
* min - Minimal bucket size
* max - Maximum bucket size
* histogram_type - HISTOGRAM_EXPONENTIAL, HISTOGRAM_LINEAR, or HISTOGRAM_BOOLEAN
* counts - array representing contents of the buckets in the histogram
* ranges - an array with calculated bucket sizes
* sum - sum of the bucket contents
* static - true for histograms defined in TelemetryHistograms.h, false for ones defined with newHistogram
*/
[implicit_jscontext]
readonly attribute jsval histogramSnapshots;
/*
* An object containing information about slow SQL statements.
*
* {
* mainThread: { "sqlString1": [<hit count>, <total time>], "sqlString2": [...], ... },
* otherThreads: { "sqlString3": [<hit count>, <total time>], "sqlString4": [...], ... }
* }
*
* where:
* mainThread: Slow statements that executed on the main thread
* otherThreads: Slow statements that executed on a non-main thread
* sqlString - String of the offending statement (see note)
* hit count - The number of times this statement required longer than the threshold time to execute
* total time - The sum of all execution times above the threshold time for this statement
*
* Note that dynamic SQL strings and SQL strings executed against addon DBs could contain private information.
* This property represents such SQL as aggregate database-level stats and the sqlString contains the database
* filename instead.
*/
[implicit_jscontext]
readonly attribute jsval slowSQL;
/*
* See slowSQL above.
*
* An object containing full strings of every slow SQL statement if toolkit.telemetry.debugSlowSql = true
* The returned SQL strings may contain private information and should not be reported to Telemetry.
*/
[implicit_jscontext]
readonly attribute jsval debugSlowSQL;
/*
* An array of chrome hang reports. Each element is a hang report represented
* as an object containing the hang duration, call stack PCs and information
* about modules in memory.
*/
[implicit_jscontext]
readonly attribute jsval chromeHangs;
/**
* An object whose properties are the names of histograms defined in
* TelemetryHistograms.h and whose corresponding values are the textual
* comments associated with said histograms.
*/
[implicit_jscontext]
readonly attribute jsval registeredHistograms;
/**
* Create and return a histogram. Parameters:
*
* @param name Unique histogram name
* @param min - Minimal bucket size
* @param max - Maximum bucket size
* @param bucket_count - number of buckets in the histogram.
* @param type - HISTOGRAM_EXPONENTIAL, HISTOGRAM_LINEAR or HISTOGRAM_BOOLEAN
* The returned object has the following functions:
* add(int) - Adds an int value to the appropriate bucket
* snapshot() - Returns a snapshot of the histogram with the same data fields as in histogramSnapshots()
* clear() - Zeros out the histogram's buckets and sum
*/
[implicit_jscontext]
jsval newHistogram(in ACString name, in PRUint32 min, in PRUint32 max, in PRUint32 bucket_count, in unsigned long histogram_type);
/**
* Create a histogram using the current state of an existing histogram. The
* existing histogram must be registered in TelemetryHistograms.h.
*
* @param name Unique histogram name
* @param existing_name Existing histogram name
* The returned object has the same functions as a histogram returned from newHistogram.
*/
[implicit_jscontext]
jsval histogramFrom(in ACString name, in ACString existing_name);
/**
* Same as newHistogram above, but for histograms registered in TelemetryHistograms.h.
*
* @param id - unique identifier from TelemetryHistograms.h
*/
[implicit_jscontext]
jsval getHistogramById(in ACString id);
/**
* Save persistent histograms to the given file.
*
* @param file - filename for saving
* @param uuid - UUID of this session
* @param callback - function to be caled when file writing is complete
*/
void saveHistograms(in nsIFile file, in ACString uuid,
in nsITelemetrySaveSessionDataCallback callback,
in bool isSynchronous);
/* Reconstruct an nsITelemetryDataSession object containing histogram
* information from the given file; the file must have been produced
* via saveHistograms.
*
* This method does not modify the histogram information being
* collected in the current session.
*
* The reconstructed object is then passed to the given callback.
*
* @param file - the file to load histogram information from
* @param callback - function to process histogram information
*/
void loadHistograms(in nsIFile file,
in nsITelemetryLoadSessionDataCallback callback,
in bool isSynchronous);
/**
* Set this to false to disable gathering of telemetry statistics.
*/
attribute boolean canRecord;
/**
* A flag indicating whether Telemetry can submit official results.
*/
readonly attribute boolean canSend;
/** Addon telemetry hooks */
/**
* Register a histogram for an addon. Throws an error if the
* histogram name has been registered previously.
*
* @param addon_id - Unique ID of the addon
* @param name - Unique histogram name
* @param min - Minimal bucket size
* @param max - Maximum bucket size
* @param bucket_count - number of buckets in the histogram
* @param histogram_type - HISTOGRAM_EXPONENTIAL, HISTOGRAM_LINEAR, or
* HISTOGRAM_BOOLEAN
*/
void registerAddonHistogram(in ACString addon_id, in ACString name,
in PRUint32 min, in PRUint32 max,
in PRUint32 bucket_count,
in unsigned long histogram_type);
/**
* Return a histogram previously registered via
* registerAddonHistogram. Throws an error if the id/name combo has
* not been registered via registerAddonHistogram.
*
* @param addon_id - Unique ID of the addon
* @param name - Registered histogram name
*
* The returned object has the same functions as a histogram returned
* from newHistogram.
*/
[implicit_jscontext]
jsval getAddonHistogram(in ACString addon_id, in ACString name);
/**
* Delete all histograms associated with the given addon id.
*
* @param addon_id - Unique ID of the addon
*/
void unregisterAddonHistograms(in ACString addon_id);
/**
* An object containing a snapshot from all of the currently
* registered addon histograms.
* { addon-id1 : data1, ... }
*
* where data is an object whose properties are the names of the
* addon's histograms and whose corresponding values are as in
* histogramSnapshots.
*/
[implicit_jscontext]
readonly attribute jsval addonHistogramSnapshots;
};