tra-analysis/website/node_modules/firebase-functions/lib/providers/analytics.js
2019-01-06 13:14:45 -06:00

237 lines
9.1 KiB
JavaScript

"use strict";
// The MIT License (MIT)
//
// Copyright (c) 2017 Firebase
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
Object.defineProperty(exports, "__esModule", { value: true });
const _ = require("lodash");
const cloud_functions_1 = require("../cloud-functions");
/** @internal */
exports.provider = 'google.analytics';
/** @internal */
exports.service = 'app-measurement.com';
/**
* Select analytics events to listen to for events.
* @param analyticsEventType Name of the analytics event type.
*/
function event(analyticsEventType) {
return _eventWithOpts(analyticsEventType, {});
}
exports.event = event;
/** @internal */
function _eventWithOpts(analyticsEventType, opts) {
return new AnalyticsEventBuilder(() => {
if (!process.env.GCLOUD_PROJECT) {
throw new Error('process.env.GCLOUD_PROJECT is not set.');
}
return ('projects/' + process.env.GCLOUD_PROJECT + '/events/' + analyticsEventType);
}, opts);
}
exports._eventWithOpts = _eventWithOpts;
/**
* The Firebase Analytics event builder interface.
*
* Access via [`functions.analytics.event()`](functions.analytics#event).
*/
class AnalyticsEventBuilder {
/** @internal */
constructor(triggerResource, opts) {
this.triggerResource = triggerResource;
this.opts = opts;
}
/**
* Event handler that fires every time a Firebase Analytics event occurs.
*
* @param {!function(!functions.Event<!functions.analytics.AnalyticsEvent>)}
* handler Event handler that fires every time a Firebase Analytics event
* occurs.
*
* @return {!functions.CloudFunction<!functions.analytics.AnalyticsEvent>} A
* Cloud Function you can export.
*/
onLog(handler) {
const dataConstructor = (raw) => {
return new AnalyticsEvent(raw.data);
};
return cloud_functions_1.makeCloudFunction({
handler,
provider: exports.provider,
eventType: 'event.log',
service: exports.service,
legacyEventType: `providers/google.firebase.analytics/eventTypes/event.log`,
triggerResource: this.triggerResource,
dataConstructor,
opts: this.opts,
});
}
}
exports.AnalyticsEventBuilder = AnalyticsEventBuilder;
/**
* Interface representing a Firebase Analytics event that was logged for a specific user.
*/
class AnalyticsEvent {
/** @internal */
constructor(wireFormat) {
this.params = {}; // In case of absent field, show empty (not absent) map.
if (wireFormat.eventDim && wireFormat.eventDim.length > 0) {
// If there's an eventDim, there'll always be exactly one.
let eventDim = wireFormat.eventDim[0];
copyField(eventDim, this, 'name');
copyField(eventDim, this, 'params', p => _.mapValues(p, unwrapValue));
copyFieldTo(eventDim, this, 'valueInUsd', 'valueInUSD');
copyFieldTo(eventDim, this, 'date', 'reportingDate');
copyTimestampToString(eventDim, this, 'timestampMicros', 'logTime');
copyTimestampToString(eventDim, this, 'previousTimestampMicros', 'previousLogTime');
}
copyFieldTo(wireFormat, this, 'userDim', 'user', dim => new UserDimensions(dim));
}
}
exports.AnalyticsEvent = AnalyticsEvent;
/**
* Interface representing the user who triggered the events.
*/
class UserDimensions {
/** @internal */
constructor(wireFormat) {
// These are interfaces or primitives, no transformation needed.
copyFields(wireFormat, this, [
'userId',
'deviceInfo',
'geoInfo',
'appInfo',
]);
// The following fields do need transformations of some sort.
copyTimestampToString(wireFormat, this, 'firstOpenTimestampMicros', 'firstOpenTime');
this.userProperties = {}; // With no entries in the wire format, present an empty (as opposed to absent) map.
copyField(wireFormat, this, 'userProperties', r => _.mapValues(r, p => new UserPropertyValue(p)));
copyField(wireFormat, this, 'bundleInfo', r => new ExportBundleInfo(r));
// BUG(36000368) Remove when no longer necessary
/* tslint:disable:no-string-literal */
if (!this.userId && this.userProperties['user_id']) {
this.userId = this.userProperties['user_id'].value;
}
/* tslint:enable:no-string-literal */
}
}
exports.UserDimensions = UserDimensions;
/**
* Predefined or custom properties stored on the client side.
*/
class UserPropertyValue {
/** @internal */
constructor(wireFormat) {
copyField(wireFormat, this, 'value', unwrapValueAsString);
copyTimestampToString(wireFormat, this, 'setTimestampUsec', 'setTime');
}
}
exports.UserPropertyValue = UserPropertyValue;
/**
* Interface representing the bundle in which these events were uploaded.
*/
class ExportBundleInfo {
/** @internal */
constructor(wireFormat) {
copyField(wireFormat, this, 'bundleSequenceId');
copyTimestampToMillis(wireFormat, this, 'serverTimestampOffsetMicros', 'serverTimestampOffset');
}
}
exports.ExportBundleInfo = ExportBundleInfo;
function copyFieldTo(from, to, fromField, toField, transform = _.identity) {
if (from[fromField] !== undefined) {
to[toField] = transform(from[fromField]);
}
}
function copyField(from, to, field, transform = _.identity) {
copyFieldTo(from, to, field, field, transform);
}
function copyFields(from, to, fields) {
for (let field of fields) {
copyField(from, to, field);
}
}
// The incoming payload will have fields like:
// {
// 'myInt': {
// 'intValue': '123'
// },
// 'myDouble': {
// 'doubleValue': 1.0
// },
// 'myFloat': {
// 'floatValue': 1.1
// },
// 'myString': {
// 'stringValue': 'hi!'
// }
// }
//
// The following method will remove these four types of 'xValue' fields, flattening them
// to just their values, as a string:
// {
// 'myInt': '123',
// 'myDouble': '1.0',
// 'myFloat': '1.1',
// 'myString': 'hi!'
// }
//
// Note that while 'intValue' will have a quoted payload, 'doubleValue' and 'floatValue' will not. This
// is due to the encoding library, which renders int64 values as strings to avoid loss of precision. This
// method always returns a string, similarly to avoid loss of precision, unlike the less-conservative
// 'unwrapValue' method just below.
function unwrapValueAsString(wrapped) {
let key = _.keys(wrapped)[0];
return _.toString(wrapped[key]);
}
// Ditto as the method above, but returning the values in the idiomatic JavaScript type (string for strings,
// number for numbers):
// {
// 'myInt': 123,
// 'myDouble': 1.0,
// 'myFloat': 1.1,
// 'myString': 'hi!'
// }
//
// The field names in the incoming xValue fields identify the type a value has, which for JavaScript's
// purposes can be divided into 'number' versus 'string'. This method will render all the numbers as
// JavaScript's 'number' type, since we prefer using idiomatic types. Note that this may lead to loss
// in precision for int64 fields, so use with care.
const xValueNumberFields = ['intValue', 'floatValue', 'doubleValue'];
function unwrapValue(wrapped) {
let key = _.keys(wrapped)[0];
let value = unwrapValueAsString(wrapped);
return _.includes(xValueNumberFields, key) ? _.toNumber(value) : value;
}
// The JSON payload delivers timestamp fields as strings of timestamps denoted in microseconds.
// The JavaScript convention is to use numbers denoted in milliseconds. This method
// makes it easy to convert a field of one type into the other.
function copyTimestampToMillis(from, to, fromName, toName) {
if (from[fromName] !== undefined) {
to[toName] = _.round(from[fromName] / 1000);
}
}
// The JSON payload delivers timestamp fields as strings of timestamps denoted in microseconds.
// In our SDK, we'd like to present timestamp as ISO-format strings. This method makes it easy
// to convert a field of one type into the other.
function copyTimestampToString(from, to, fromName, toName) {
if (from[fromName] !== undefined) {
to[toName] = new Date(from[fromName] / 1000).toISOString();
}
}