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Viewing file:     instrument.js (18.37 KB)      -rw-r--r--

Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var is_1 = require("./is");
var logger_1 = require("./logger");
var misc_1 = require("./misc");
var object_1 = require("./object");
var stacktrace_1 = require("./stacktrace");
var supports_1 = require("./supports");
var global = misc_1.getGlobalObject();
/**
 * Instrument native APIs to call handlers that can be used to create breadcrumbs, APM spans etc.
 *  - Console API
 *  - Fetch API
 *  - XHR API
 *  - History API
 *  - DOM API (click/typing)
 *  - Error API
 *  - UnhandledRejection API
 */
var handlers = {};
var instrumented = {};
/** Instruments given API */
function instrument(type) {
    if (instrumented[type]) {
        return;
    }
    instrumented[type] = true;
    switch (type) {
        case 'console':
            instrumentConsole();
            break;
        case 'dom':
            instrumentDOM();
            break;
        case 'xhr':
            instrumentXHR();
            break;
        case 'fetch':
            instrumentFetch();
            break;
        case 'history':
            instrumentHistory();
            break;
        case 'error':
            instrumentError();
            break;
        case 'unhandledrejection':
            instrumentUnhandledRejection();
            break;
        default:
            logger_1.logger.warn('unknown instrumentation type:', type);
    }
}
/**
 * Add handler that will be called when given type of instrumentation triggers.
 * Use at your own risk, this might break without changelog notice, only used internally.
 * @hidden
 */
function addInstrumentationHandler(handler) {
    if (!handler || typeof handler.type !== 'string' || typeof handler.callback !== 'function') {
        return;
    }
    handlers[handler.type] = handlers[handler.type] || [];
    handlers[handler.type].push(handler.callback);
    instrument(handler.type);
}
exports.addInstrumentationHandler = addInstrumentationHandler;
/** JSDoc */
function triggerHandlers(type, data) {
    var e_1, _a;
    if (!type || !handlers[type]) {
        return;
    }
    try {
        for (var _b = tslib_1.__values(handlers[type] || []), _c = _b.next(); !_c.done; _c = _b.next()) {
            var handler = _c.value;
            try {
                handler(data);
            }
            catch (e) {
                logger_1.logger.error("Error while triggering instrumentation handler.\nType: " + type + "\nName: " + stacktrace_1.getFunctionName(handler) + "\nError: " + e);
            }
        }
    }
    catch (e_1_1) { e_1 = { error: e_1_1 }; }
    finally {
        try {
            if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
        }
        finally { if (e_1) throw e_1.error; }
    }
}
/** JSDoc */
function instrumentConsole() {
    if (!('console' in global)) {
        return;
    }
    ['debug', 'info', 'warn', 'error', 'log', 'assert'].forEach(function (level) {
        if (!(level in global.console)) {
            return;
        }
        object_1.fill(global.console, level, function (originalConsoleLevel) {
            return function () {
                var args = [];
                for (var _i = 0; _i < arguments.length; _i++) {
                    args[_i] = arguments[_i];
                }
                triggerHandlers('console', { args: args, level: level });
                // this fails for some browsers. :(
                if (originalConsoleLevel) {
                    Function.prototype.apply.call(originalConsoleLevel, global.console, args);
                }
            };
        });
    });
}
/** JSDoc */
function instrumentFetch() {
    if (!supports_1.supportsNativeFetch()) {
        return;
    }
    object_1.fill(global, 'fetch', function (originalFetch) {
        return function () {
            var args = [];
            for (var _i = 0; _i < arguments.length; _i++) {
                args[_i] = arguments[_i];
            }
            var handlerData = {
                args: args,
                fetchData: {
                    method: getFetchMethod(args),
                    url: getFetchUrl(args),
                },
                startTimestamp: Date.now(),
            };
            triggerHandlers('fetch', tslib_1.__assign({}, handlerData));
            // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
            return originalFetch.apply(global, args).then(function (response) {
                triggerHandlers('fetch', tslib_1.__assign(tslib_1.__assign({}, handlerData), { endTimestamp: Date.now(), response: response }));
                return response;
            }, function (error) {
                triggerHandlers('fetch', tslib_1.__assign(tslib_1.__assign({}, handlerData), { endTimestamp: Date.now(), error: error }));
                // NOTE: If you are a Sentry user, and you are seeing this stack frame,
                //       it means the sentry.javascript SDK caught an error invoking your application code.
                //       This is expected behavior and NOT indicative of a bug with sentry.javascript.
                throw error;
            });
        };
    });
}
/* eslint-disable @typescript-eslint/no-unsafe-member-access */
/** Extract `method` from fetch call arguments */
function getFetchMethod(fetchArgs) {
    if (fetchArgs === void 0) { fetchArgs = []; }
    if ('Request' in global && is_1.isInstanceOf(fetchArgs[0], Request) && fetchArgs[0].method) {
        return String(fetchArgs[0].method).toUpperCase();
    }
    if (fetchArgs[1] && fetchArgs[1].method) {
        return String(fetchArgs[1].method).toUpperCase();
    }
    return 'GET';
}
/** Extract `url` from fetch call arguments */
function getFetchUrl(fetchArgs) {
    if (fetchArgs === void 0) { fetchArgs = []; }
    if (typeof fetchArgs[0] === 'string') {
        return fetchArgs[0];
    }
    if ('Request' in global && is_1.isInstanceOf(fetchArgs[0], Request)) {
        return fetchArgs[0].url;
    }
    return String(fetchArgs[0]);
}
/* eslint-enable @typescript-eslint/no-unsafe-member-access */
/** JSDoc */
function instrumentXHR() {
    if (!('XMLHttpRequest' in global)) {
        return;
    }
    // Poor man's implementation of ES6 `Map`, tracking and keeping in sync key and value separately.
    var requestKeys = [];
    var requestValues = [];
    var xhrproto = XMLHttpRequest.prototype;
    object_1.fill(xhrproto, 'open', function (originalOpen) {
        return function () {
            var args = [];
            for (var _i = 0; _i < arguments.length; _i++) {
                args[_i] = arguments[_i];
            }
            // eslint-disable-next-line @typescript-eslint/no-this-alias
            var xhr = this;
            var url = args[1];
            xhr.__sentry_xhr__ = {
                // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
                method: is_1.isString(args[0]) ? args[0].toUpperCase() : args[0],
                url: args[1],
            };
            // if Sentry key appears in URL, don't capture it as a request
            // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
            if (is_1.isString(url) && xhr.__sentry_xhr__.method === 'POST' && url.match(/sentry_key/)) {
                xhr.__sentry_own_request__ = true;
            }
            var onreadystatechangeHandler = function () {
                if (xhr.readyState === 4) {
                    try {
                        // touching statusCode in some platforms throws
                        // an exception
                        if (xhr.__sentry_xhr__) {
                            xhr.__sentry_xhr__.status_code = xhr.status;
                        }
                    }
                    catch (e) {
                        /* do nothing */
                    }
                    try {
                        var requestPos = requestKeys.indexOf(xhr);
                        if (requestPos !== -1) {
                            // Make sure to pop both key and value to keep it in sync.
                            requestKeys.splice(requestPos);
                            var args_1 = requestValues.splice(requestPos)[0];
                            if (xhr.__sentry_xhr__ && args_1[0] !== undefined) {
                                xhr.__sentry_xhr__.body = args_1[0];
                            }
                        }
                    }
                    catch (e) {
                        /* do nothing */
                    }
                    triggerHandlers('xhr', {
                        args: args,
                        endTimestamp: Date.now(),
                        startTimestamp: Date.now(),
                        xhr: xhr,
                    });
                }
            };
            if ('onreadystatechange' in xhr && typeof xhr.onreadystatechange === 'function') {
                object_1.fill(xhr, 'onreadystatechange', function (original) {
                    return function () {
                        var readyStateArgs = [];
                        for (var _i = 0; _i < arguments.length; _i++) {
                            readyStateArgs[_i] = arguments[_i];
                        }
                        onreadystatechangeHandler();
                        return original.apply(xhr, readyStateArgs);
                    };
                });
            }
            else {
                xhr.addEventListener('readystatechange', onreadystatechangeHandler);
            }
            return originalOpen.apply(xhr, args);
        };
    });
    object_1.fill(xhrproto, 'send', function (originalSend) {
        return function () {
            var args = [];
            for (var _i = 0; _i < arguments.length; _i++) {
                args[_i] = arguments[_i];
            }
            requestKeys.push(this);
            requestValues.push(args);
            triggerHandlers('xhr', {
                args: args,
                startTimestamp: Date.now(),
                xhr: this,
            });
            return originalSend.apply(this, args);
        };
    });
}
var lastHref;
/** JSDoc */
function instrumentHistory() {
    if (!supports_1.supportsHistory()) {
        return;
    }
    var oldOnPopState = global.onpopstate;
    global.onpopstate = function () {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        var to = global.location.href;
        // keep track of the current URL state, as we always receive only the updated state
        var from = lastHref;
        lastHref = to;
        triggerHandlers('history', {
            from: from,
            to: to,
        });
        if (oldOnPopState) {
            return oldOnPopState.apply(this, args);
        }
    };
    /** @hidden */
    function historyReplacementFunction(originalHistoryFunction) {
        return function () {
            var args = [];
            for (var _i = 0; _i < arguments.length; _i++) {
                args[_i] = arguments[_i];
            }
            var url = args.length > 2 ? args[2] : undefined;
            if (url) {
                // coerce to string (this is what pushState does)
                var from = lastHref;
                var to = String(url);
                // keep track of the current URL state, as we always receive only the updated state
                lastHref = to;
                triggerHandlers('history', {
                    from: from,
                    to: to,
                });
            }
            return originalHistoryFunction.apply(this, args);
        };
    }
    object_1.fill(global.history, 'pushState', historyReplacementFunction);
    object_1.fill(global.history, 'replaceState', historyReplacementFunction);
}
/** JSDoc */
function instrumentDOM() {
    if (!('document' in global)) {
        return;
    }
    // Capture breadcrumbs from any click that is unhandled / bubbled up all the way
    // to the document. Do this before we instrument addEventListener.
    global.document.addEventListener('click', domEventHandler('click', triggerHandlers.bind(null, 'dom')), false);
    global.document.addEventListener('keypress', keypressEventHandler(triggerHandlers.bind(null, 'dom')), false);
    // After hooking into document bubbled up click and keypresses events, we also hook into user handled click & keypresses.
    ['EventTarget', 'Node'].forEach(function (target) {
        /* eslint-disable @typescript-eslint/no-unsafe-member-access */
        var proto = global[target] && global[target].prototype;
        // eslint-disable-next-line no-prototype-builtins
        if (!proto || !proto.hasOwnProperty || !proto.hasOwnProperty('addEventListener')) {
            return;
        }
        /* eslint-enable @typescript-eslint/no-unsafe-member-access */
        object_1.fill(proto, 'addEventListener', function (original) {
            return function (eventName, fn, options) {
                if (fn && fn.handleEvent) {
                    if (eventName === 'click') {
                        object_1.fill(fn, 'handleEvent', function (innerOriginal) {
                            return function (event) {
                                domEventHandler('click', triggerHandlers.bind(null, 'dom'))(event);
                                return innerOriginal.call(this, event);
                            };
                        });
                    }
                    if (eventName === 'keypress') {
                        object_1.fill(fn, 'handleEvent', function (innerOriginal) {
                            return function (event) {
                                keypressEventHandler(triggerHandlers.bind(null, 'dom'))(event);
                                return innerOriginal.call(this, event);
                            };
                        });
                    }
                }
                else {
                    if (eventName === 'click') {
                        domEventHandler('click', triggerHandlers.bind(null, 'dom'), true)(this);
                    }
                    if (eventName === 'keypress') {
                        keypressEventHandler(triggerHandlers.bind(null, 'dom'))(this);
                    }
                }
                return original.call(this, eventName, fn, options);
            };
        });
        object_1.fill(proto, 'removeEventListener', function (original) {
            return function (eventName, fn, options) {
                try {
                    original.call(this, eventName, fn.__sentry_wrapped__, options);
                }
                catch (e) {
                    // ignore, accessing __sentry_wrapped__ will throw in some Selenium environments
                }
                return original.call(this, eventName, fn, options);
            };
        });
    });
}
var debounceDuration = 1000;
var debounceTimer = 0;
var keypressTimeout;
var lastCapturedEvent;
/**
 * Wraps addEventListener to capture UI breadcrumbs
 * @param name the event name (e.g. "click")
 * @param handler function that will be triggered
 * @param debounce decides whether it should wait till another event loop
 * @returns wrapped breadcrumb events handler
 * @hidden
 */
function domEventHandler(name, handler, debounce) {
    if (debounce === void 0) { debounce = false; }
    return function (event) {
        // reset keypress timeout; e.g. triggering a 'click' after
        // a 'keypress' will reset the keypress debounce so that a new
        // set of keypresses can be recorded
        keypressTimeout = undefined;
        // It's possible this handler might trigger multiple times for the same
        // event (e.g. event propagation through node ancestors). Ignore if we've
        // already captured the event.
        if (!event || lastCapturedEvent === event) {
            return;
        }
        lastCapturedEvent = event;
        if (debounceTimer) {
            clearTimeout(debounceTimer);
        }
        if (debounce) {
            debounceTimer = setTimeout(function () {
                handler({ event: event, name: name });
            });
        }
        else {
            handler({ event: event, name: name });
        }
    };
}
/**
 * Wraps addEventListener to capture keypress UI events
 * @param handler function that will be triggered
 * @returns wrapped keypress events handler
 * @hidden
 */
function keypressEventHandler(handler) {
    // TODO: if somehow user switches keypress target before
    //       debounce timeout is triggered, we will only capture
    //       a single breadcrumb from the FIRST target (acceptable?)
    return function (event) {
        var target;
        try {
            target = event.target;
        }
        catch (e) {
            // just accessing event properties can throw an exception in some rare circumstances
            // see: https://github.com/getsentry/raven-js/issues/838
            return;
        }
        var tagName = target && target.tagName;
        // only consider keypress events on actual input elements
        // this will disregard keypresses targeting body (e.g. tabbing
        // through elements, hotkeys, etc)
        if (!tagName || (tagName !== 'INPUT' && tagName !== 'TEXTAREA' && !target.isContentEditable)) {
            return;
        }
        // record first keypress in a series, but ignore subsequent
        // keypresses until debounce clears
        if (!keypressTimeout) {
            domEventHandler('input', handler)(event);
        }
        clearTimeout(keypressTimeout);
        keypressTimeout = setTimeout(function () {
            keypressTimeout = undefined;
        }, debounceDuration);
    };
}
var _oldOnErrorHandler = null;
/** JSDoc */
function instrumentError() {
    _oldOnErrorHandler = global.onerror;
    global.onerror = function (msg, url, line, column, error) {
        triggerHandlers('error', {
            column: column,
            error: error,
            line: line,
            msg: msg,
            url: url,
        });
        if (_oldOnErrorHandler) {
            // eslint-disable-next-line prefer-rest-params
            return _oldOnErrorHandler.apply(this, arguments);
        }
        return false;
    };
}
var _oldOnUnhandledRejectionHandler = null;
/** JSDoc */
function instrumentUnhandledRejection() {
    _oldOnUnhandledRejectionHandler = global.onunhandledrejection;
    global.onunhandledrejection = function (e) {
        triggerHandlers('unhandledrejection', e);
        if (_oldOnUnhandledRejectionHandler) {
            // eslint-disable-next-line prefer-rest-params
            return _oldOnUnhandledRejectionHandler.apply(this, arguments);
        }
        return true;
    };
}
//# sourceMappingURL=instrument.js.map