// Copyright 2016, Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @name Link Checker
*
* @overview The Link Checker script iterates through the ads, keywords, and
* sitelinks in your account and makes sure their URLs do not produce "Page
* not found" or other types of error responses. See
* for more details.
*
*
* @version 2.1
*
* @changelog
* - version 2.1
* - Added expansion of conditional ValueTrack parameters (e.g. ifmobile).
* - Added expanded text ad and other ad format support.
* - version 2.0.3
* - Added validation for external spreadsheet setup.
* - version 2.0.2
* - Allow the custom tracking label to include spaces.
* - version 2.0.1
* - Catch and output all UrlFetchApp exceptions.
* - version 2.0
* - Completely revised the script to work on larger accounts.
* - Check URLs in campaign and ad group sitelinks.
* - version 1.2
* - Released initial version.
*/
var CONFIG = {
// URL of the spreadsheet template.
// Array of addresses to be alerted via email if issues are found.
RECIPIENT_EMAILS: [
'[xxx]'
],
// Label to use when a link has been checked.
LABEL: 'LinkChecker_Done',
// Number of milliseconds to sleep after each URL request. If your URLs are
// all on one or a few domains, use this throttle to reduce the load that the
// script imposes on your web server(s).
THROTTLE: 0,
// Number of seconds before timeout that the script should stop checking URLs
// to make sure it has time to output its findings.
TIMEOUT_BUFFER: 120
};
/**
* Parameters controlling the script's behavior after hitting a UrlFetchApp
* QPS quota limit.
*/
var QUOTA_CONFIG = {
INIT_SLEEP_TIME: 250,
BACKOFF_FACTOR: 2,
MAX_TRIES: 5
};
/**
* Exceptions that prevent the script from finishing checking all URLs in an
* account but allow it to resume next time.
*/
var EXCEPTIONS = {
QPS: 'Reached UrlFetchApp QPS limit',
LIMIT: 'Reached UrlFetchApp daily quota',
TIMEOUT: 'Approached script execution time limit'
};
/**
* Named ranges in the spreadsheet.
*/
var NAMES = {
CHECK_AD_URLS: 'checkAdUrls',
CHECK_KEYWORD_URLS: 'checkKeywordUrls',
CHECK_SITELINK_URLS: 'checkSitelinkUrls',
CHECK_PAUSED_ADS: 'checkPausedAds',
CHECK_PAUSED_KEYWORDS: 'checkPausedKeywords',
CHECK_PAUSED_SITELINKS: 'checkPausedSitelinks',
VALID_CODES: 'validCodes',
EMAIL_EACH_RUN: 'emailEachRun',
EMAIL_NON_ERRORS: 'emailNonErrors',
EMAIL_ON_COMPLETION: 'emailOnCompletion',
SAVE_ALL_URLS: 'saveAllUrls',
FREQUENCY: 'frequency',
DATE_STARTED: 'dateStarted',
DATE_COMPLETED: 'dateCompleted',
DATE_EMAILED: 'dateEmailed',
NUM_ERRORS: 'numErrors',
RESULT_HEADERS: 'resultHeaders',
ARCHIVE_HEADERS: 'archiveHeaders'
};
function main() {
var spreadsheet = validateAndGetSpreadsheet(CONFIG.SPREADSHEET_URL);
validateEmailAddresses(CONFIG.RECIPIENT_EMAILS);
spreadsheet.setSpreadsheetTimeZone(AdWordsApp.currentAccount().getTimeZone());
var options = loadOptions(spreadsheet);
var status = loadStatus(spreadsheet);
if (!status.dateStarted) {
// This is the very first execution of the script.
startNewAnalysis(spreadsheet);
} else if (status.dateStarted > status.dateCompleted) {
Logger.log('Resuming work from a previous execution.');
} else if (dayDifference(status.dateStarted, new Date()) <
options.frequency) {
Logger.log('Waiting until ' + options.frequency +
' days have elapsed since the start of the last analysis.');
return;
} else {
// Enough time has passed since the last analysis to start a new one.
removeLabels([CONFIG.LABEL]);
startNewAnalysis(spreadsheet);
}
var results = analyzeAccount(options);
outputResults(results, options);
}
/**
* Checks as many new URLs as possible that have not previously been checked,
* subject to quota and time limits.
*
* @param {Object} options Dictionary of options.
* @return {Object} An object with fields for the URLs checked and an indication
* if the analysis was completed (no remaining URLs to check).
*/
function analyzeAccount(options) {
// Ensure the label exists before attempting to retrieve already checked URLs.
ensureLabels([CONFIG.LABEL]);
var checkedUrls = getAlreadyCheckedUrls(options);
var urlChecks = [];
var didComplete = false;
try {
// If the script throws an exception, didComplete will remain false.
didComplete = checkUrls(checkedUrls, urlChecks, options);
} catch(e) {
if (e == EXCEPTIONS.QPS ||
e == EXCEPTIONS.LIMIT ||
e == EXCEPTIONS.TIMEOUT) {
Logger.log('Stopped checking URLs early because: ' + e);
Logger.log('Checked URLs will still be output.');
} else {
throw e;
}
}
return {
urlChecks: urlChecks,
didComplete: didComplete
};
}
/**
* Outputs the results to a spreadsheet and sends emails if appropriate.
*
* @param {Object} results An object with fields for the URLs checked and an
* indication if the analysis was completed (no remaining URLs to check).
* @param {Object} options Dictionary of options.
*/
function outputResults(results, options) {
var spreadsheet = SpreadsheetApp.openByUrl(CONFIG.SPREADSHEET_URL);
var numErrors = countErrors(results.urlChecks, options);
Logger.log('Found ' + numErrors + ' this execution.');
saveUrlsToSpreadsheet(spreadsheet, results.urlChecks, options);
// Reload the status to get the total number of errors for the entire
// analysis, which is calculated by the spreadsheet.
status = loadStatus(spreadsheet);
if (results.didComplete) {
spreadsheet.getRangeByName(NAMES.DATE_COMPLETED).setValue(new Date());
Logger.log('Found ' + status.numErrors + ' across the entire analysis.');
}
if (CONFIG.RECIPIENT_EMAILS) {
if (!results.didComplete && options.emailEachRun &&
(options.emailNonErrors || numErrors > 0)) {
sendIntermediateEmail(spreadsheet, numErrors);
}
if (results.didComplete &&
(options.emailEachRun || options.emailOnCompletion) &&
(options.emailNonErrors || status.numErrors > 0)) {
sendFinalEmail(spreadsheet, status.numErrors);
}
}
}
/**
* Loads data from a spreadsheet based on named ranges. Strings 'Yes' and 'No'
* are converted to booleans. One-dimensional ranges are converted to arrays
* with blank cells omitted. Assumes each named range exists.
*
* @param {Object} spreadsheet The spreadsheet object.
* @param {Array.<string>} names A list of named ranges that should be loaded.
* @return {Object} A dictionary with the names as keys and the values
* as the cell values from the spreadsheet.
*/
function loadDatabyName(spreadsheet, names) {
var data = {};
for (var i = 0; i < names.length; i++) {
var name = names[i];
var range = spreadsheet.getRangeByName(name);
if (range.getNumRows() > 1 && range.getNumColumns() > 1) {
// Name refers to a 2d range, so load it as a 2d array.
data[name] = range.getValues();
} else if (range.getNumRows() == 1 && range.getNumColumns() == 1) {
// Name refers to a single cell, so load it as a value and replace
// Yes/No with boolean true/false.
data[name] = range.getValue();
data[name] = data[name] === 'Yes' ? true : data[name];
data[name] = data[name] === 'No' ? false : data[name];
} else {
// Name refers to a 1d range, so load it as an array (regardless of
// whether the 1d range is oriented horizontally or vertically).
var isByRow = range.getNumRows() > 1;
var limit = isByRow ? range.getNumRows() : range.getNumColumns();
var cellValues = range.getValues();
data[name] = [];
for (var j = 0; j < limit; j++) {
var cellValue = isByRow ? cellValues[j][0] : cellValues[0][j];
if (cellValue) {
data[name].push(cellValue);
}
}
}
}
return data;
}
/**
* Loads options from the spreadsheet.
*
* @param {Object} spreadsheet The spreadsheet object.
* @return {Object} A dictionary of options.
*/
function loadOptions(spreadsheet) {
return loadDatabyName(spreadsheet,
[NAMES.CHECK_AD_URLS, NAMES.CHECK_KEYWORD_URLS,
NAMES.CHECK_SITELINK_URLS, NAMES.CHECK_PAUSED_ADS,
NAMES.CHECK_PAUSED_KEYWORDS, NAMES.CHECK_PAUSED_SITELINKS,
NAMES.VALID_CODES, NAMES.EMAIL_EACH_RUN,
NAMES.EMAIL_NON_ERRORS, NAMES.EMAIL_ON_COMPLETION,
NAMES.SAVE_ALL_URLS, NAMES.FREQUENCY]);
}
/**
* Loads state information from the spreadsheet.
*
* @param {Object} spreadsheet The spreadsheet object.
* @return {Object} A dictionary of status information.
*/
function loadStatus(spreadsheet) {
return loadDatabyName(spreadsheet,
[NAMES.DATE_STARTED, NAMES.DATE_COMPLETED,
NAMES.DATE_EMAILED, NAMES.NUM_ERRORS]);
}
/**
* Saves the start date to the spreadsheet and archives results of the last
* analysis to a separate sheet.
*
* @param {Object} spreadsheet The spreadsheet object.
*/
function startNewAnalysis(spreadsheet) {
Logger.log('Starting a new analysis.');
spreadsheet.getRangeByName(NAMES.DATE_STARTED).setValue(new Date());
// Helper method to get the output area on the results or archive sheets.
var getOutputRange = function(rangeName) {
var headers = spreadsheet.getRangeByName(rangeName);
return headers.offset(1, 0, headers.getSheet().getDataRange().getLastRow());
};
getOutputRange(NAMES.ARCHIVE_HEADERS).clearContent();
var results = getOutputRange(NAMES.RESULT_HEADERS);
results.copyTo(getOutputRange(NAMES.ARCHIVE_HEADERS));
getOutputRange(NAMES.RESULT_HEADERS).clearContent();
}
/**
* Counts the number of errors in the results.
*
* @param {Array.<Object>} urlChecks A list of URL check results.
* @param {Object} options Dictionary of options.
* @return {number} The number of errors in the results.
*/
function countErrors(urlChecks, options) {
var numErrors = 0;
for (var i = 0; i < urlChecks.length; i++) {
if (options.validCodes.indexOf(urlChecks[i].responseCode) == -1) {
numErrors++;
}
}
return numErrors;
}
/**
* Saves URLs for a particular account to the spreadsheet starting at the first
* unused row.
*
* @param {Object} spreadsheet The spreadsheet object.
* @param {Array.<Object>} urlChecks A list of URL check results.
* @param {Object} options Dictionary of options.
*/
function saveUrlsToSpreadsheet(spreadsheet, urlChecks, options) {
// Build each row of output values in the order of the columns.
var outputValues = [];
for (var i = 0; i < urlChecks.length; i++) {
var urlCheck = urlChecks[i];
if (options.saveAllUrls ||
options.validCodes.indexOf(urlCheck.responseCode) == -1) {
outputValues.push([
urlCheck.customerId,
new Date(urlCheck.timestamp),
urlCheck.url,
urlCheck.responseCode,
urlCheck.entityType,
urlCheck.campaign,
urlCheck.adGroup,
urlCheck.ad,
urlCheck.keyword,
urlCheck.sitelink
]);
}
}
if (outputValues.length > 0) {
// Find the first open row on the Results tab below the headers and create a
// range large enough to hold all of the output, one per row.
var headers = spreadsheet.getRangeByName(NAMES.RESULT_HEADERS);
var lastRow = headers.getSheet().getDataRange().getLastRow();
var outputRange = headers.offset(lastRow - headers.getRow() + 1,
0, outputValues.length);
outputRange.setValues(outputValues);
}
for (var i = 0; i < CONFIG.RECIPIENT_EMAILS.length; i++) {
spreadsheet.addEditor(CONFIG.RECIPIENT_EMAILS[i]);
}
}
/**
* Sends an email to a list of email addresses with a link to the spreadsheet
* and the results of this execution of the script.
*
* @param {Object} spreadsheet The spreadsheet object.
* @param {boolean} numErrors The number of errors found in this execution.
*/
function sendIntermediateEmail(spreadsheet, numErrors) {
spreadsheet.getRangeByName(NAMES.DATE_EMAILED).setValue(new Date());
MailApp.sendEmail(CONFIG.RECIPIENT_EMAILS.join(','),
'Link Checker Results',
'The Link Checker script found ' + numErrors + ' URLs with errors in ' +
'an execution that just finished. See ' +
spreadsheet.getUrl() + ' for details.');
}
/**
* Sends an email to a list of email addresses with a link to the spreadsheet
* and the results across the entire account.
*
* @param {Object} spreadsheet The spreadsheet object.
* @param {boolean} numErrors The number of errors found in the entire account.
*/
function sendFinalEmail(spreadsheet, numErrors) {
spreadsheet.getRangeByName(NAMES.DATE_EMAILED).setValue(new Date());
MailApp.sendEmail(CONFIG.RECIPIENT_EMAILS.join(','),
'Link Checker Results',
'The Link Checker script found ' + numErrors + ' URLs with errors ' +
'across its entire analysis. See ' +
spreadsheet.getUrl() + ' for details.');
}
/**
* Retrieves all final URLs and mobile final URLs in the account across ads,
* keywords, and sitelinks that were checked in a previous run, as indicated by
* them having been labeled.
*
* @param {Object} options Dictionary of options.
* @return {Object} A map of previously checked URLs with the URL as the key.
*/
function getAlreadyCheckedUrls(options) {
var urlMap = {};
var addToMap = function(items) {
for (var i = 0; i < items.length; i++) {
var urls = expandUrlModifiers(items[i]);
urls.forEach(function(url) {
urlMap[url] = true;
});
}
};
if (options.checkAdUrls) {
addToMap(getUrlsBySelector(AdWordsApp.ads().
withCondition(labelCondition(true))));
}
if (options.checkKeywordUrls) {
addToMap(getUrlsBySelector(AdWordsApp.keywords().
withCondition(labelCondition(true))));
}
if (options.checkSitelinkUrls) {
addToMap(getAlreadyCheckedSitelinkUrls());
}
return urlMap;
}
/**
* Retrieves all final URLs and mobile final URLs for campaign and ad group
* sitelinks.
*
* @return {Array.<string>} An array of URLs.
*/
function getAlreadyCheckedSitelinkUrls() {
var urls = [];
// Helper method to get campaign or ad group sitelink URLs.
var addSitelinkUrls = function(selector) {
var iterator = selector.withCondition(labelCondition(true)).get();
while (iterator.hasNext()) {
var entity = iterator.next();
var sitelinks = entity.extensions().sitelinks();
urls = urls.concat(getUrlsBySelector(sitelinks));
}
};
addSitelinkUrls(AdWordsApp.campaigns());
addSitelinkUrls(AdWordsApp.adGroups());
return urls;
}
/**
* Retrieves all URLs in the entities specified by a selector.
*
* @param {Object} selector The selector specifying the entities to use.
* The entities should be of a type that has a urls() method.
* @return {Array.<string>} An array of URLs.
*/
function getUrlsBySelector(selector) {
var urls = [];
var entities = selector.get();
// Helper method to add the url to the list if it exists.
var addToList = function(url) {
if (url) {
urls.push(url);
}
};
while (entities.hasNext()) {
var entity = entities.next();
addToList(entity.urls().getFinalUrl());
addToList(entity.urls().getMobileFinalUrl());
}
return urls;
}
/**
* Retrieves all final URLs and mobile final URLs in the account across ads,
* keywords, and sitelinks, and checks their response code. Does not check
* previously checked URLs.
*
* @param {Object} checkedUrls A map of previously checked URLs with the URL as
* the key.
* @param {Array.<Object>} urlChecks An array into which the results of each URL
* check will be inserted.
* @param {Object} options Dictionary of options.
* @return {boolean} True if all URLs were checked.
*/
function checkUrls(checkedUrls, urlChecks, options) {
var didComplete = true;
// Helper method to add common conditions to ad group and keyword selectors.
var addConditions = function(selector, includePaused) {
var statuses = ['ENABLED'];
if (includePaused) {
statuses.push('PAUSED');
}
var predicate = ' IN [' + statuses.join(',') + ']';
return selector.withCondition(labelCondition(false)).
withCondition('Status' + predicate).
withCondition('CampaignStatus' + predicate).
withCondition('AdGroupStatus' + predicate);
};
if (options.checkAdUrls) {
didComplete = didComplete && checkUrlsBySelector(checkedUrls, urlChecks,
addConditions(AdWordsApp.ads().withCondition('CreativeFinalUrls != ""'),
options.checkPausedAds));
}
if (options.checkKeywordUrls) {
didComplete = didComplete && checkUrlsBySelector(checkedUrls, urlChecks,
addConditions(AdWordsApp.keywords().withCondition('FinalUrls != ""'),
options.checkPausedKeywords));
}
if (options.checkSitelinkUrls) {
didComplete = didComplete &&
checkSitelinkUrls(checkedUrls, urlChecks, options);
}
return didComplete;
}
/**
* Retrieves all final URLs and mobile final URLs in a selector and checks them
* for a valid response code. Does not check previously checked URLs. Labels the
* entity that it was checked, if possible.
*
* @param {Object} checkedUrls A map of previously checked URLs with the URL as
* the key.
* @param {Array.<Object>} urlChecks An array into which the results of each URL
* check will be inserted.
* @param {Object} selector The selector specifying the entities to use.
* The entities should be of a type that has a urls() method.
* @return {boolean} True if all URLs were checked.
*/
function checkUrlsBySelector(checkedUrls, urlChecks, selector) {
var customerId = AdWordsApp.currentAccount().getCustomerId();
var iterator = selector.get();
var entities = [];
// Helper method to check a URL.
var checkUrl = function(entity, url) {
if (!url) {
return;
}
var urlsToCheck = expandUrlModifiers(url);
for (var i = 0; i < urlsToCheck.length; i++) {
var expandedUrl = urlsToCheck[i];
if (checkedUrls[expandedUrl]) {
continue;
}
var responseCode = requestUrl(expandedUrl);
var entityType = entity.getEntityType();
urlChecks.push({
customerId: customerId,
timestamp: new Date(),
url: expandedUrl,
responseCode: responseCode,
entityType: entityType,
campaign: entity.getCampaign ? entity.getCampaign().getName() : '',
adGroup: entity.getAdGroup ? entity.getAdGroup().getName() : '',
ad: entityType == 'Ad' ? getAdAsText(entity) : '',
keyword: entityType == 'Keyword' ? entity.getText() : '',
sitelink: entityType.indexOf('Sitelink') != -1 ?
entity.getLinkText() : ''
});
checkedUrls[expandedUrl] = true;
}
};
while (iterator.hasNext()) {
entities.push(iterator.next());
}
for (var i = 0; i < entities.length; i++) {
var entity = entities[i];
checkUrl(entity, entity.urls().getFinalUrl());
checkUrl(entity, entity.urls().getMobileFinalUrl());
// Sitelinks do not have labels.
if (entity.applyLabel) {
entity.applyLabel(CONFIG.LABEL);
checkTimeout();
}
}
// True only if we did not breach an iterator limit.
return entities.length == iterator.totalNumEntities();
}
/**
* Retrieves a text representation of an ad, casting the ad to the appropriate
* type if necessary.
*
* @param {Ad} ad The ad object.
* @return {string} The text representation.
*/
function getAdAsText(ad) {
// There is no AdTypeSpace method for textAd
if (ad.getType() === 'TEXT_AD') {
return ad.getHeadline();
} else if (ad.isType().expandedTextAd()) {
var eta = ad.asType().expandedTextAd();
return eta.getHeadlinePart1() + ' - ' + eta.getHeadlinePart2();
} else if (ad.isType().gmailImageAd()) {
return ad.asType().gmailImageAd().getName();
} else if (ad.isType().gmailMultiProductAd()) {
return ad.asType().gmailMultiProductAd().getHeadline();
} else if (ad.isType().gmailSinglePromotionAd()) {
return ad.asType().gmailSinglePromotionAd().getHeadline();
} else if (ad.isType().html5Ad()) {
return ad.asType().html5Ad().getName();
} else if (ad.isType().imageAd()) {
return ad.asType().imageAd().getName();
} else if (ad.isType().responsiveDisplayAd()) {
return ad.asType().responsiveDisplayAd().getLongHeadline();
}
return 'N/A';
}
/**
* Retrieves all final URLs and mobile final URLs for campaign and ad group
* sitelinks and checks them for a valid response code. Does not check
* previously checked URLs. Labels the containing campaign or ad group that it
* has been checked.
*
* @param {Object} checkedUrls A map of previously checked URLs with the URL as
* the key.
* @param {Array.<Object>} urlChecks An array into which the results of each URL
* check will be inserted.
* @param {Object} options Dictionary of options.
* @return {boolean} True if all URLs were checked.
*/
function checkSitelinkUrls(checkedUrls, urlChecks, options) {
var didComplete = true;
// Helper method to check URLs for sitelinks in a campaign or ad group
// selector.
var checkSitelinkUrls = function(selector) {
var iterator = selector.withCondition(labelCondition(false)).get();
var entities = [];
while (iterator.hasNext()) {
entities.push(iterator.next());
}
for (var i = 0; i < entities.length; i++) {
var entity = entities[i];
var sitelinks = entity.extensions().sitelinks();
if (sitelinks.get().hasNext()) {
didComplete = didComplete &&
checkUrlsBySelector(checkedUrls, urlChecks, sitelinks);
entity.applyLabel(CONFIG.LABEL);
checkTimeout();
}
}
// True only if we did not breach an iterator limit.
didComplete = didComplete &&
entities.length == iterator.totalNumEntities();
};
var statuses = ['ENABLED'];
if (options.checkPausedSitelinks) {
statuses.push('PAUSED');
}
var predicate = ' IN [' + statuses.join(',') + ']';
checkSitelinkUrls(AdWordsApp.campaigns().
withCondition('Status' + predicate));
checkSitelinkUrls(AdWordsApp.adGroups().
withCondition('Status' + predicate).
withCondition('CampaignStatus' + predicate));
return didComplete;
}
/**
* Expands a URL that contains ValueTrack parameters such as {ifmobile:mobile}
* to all the combinations, and returns as an array. The following pairs of
* ValueTrack parameters are currently expanded:
* 1. {ifmobile:<...>} and {ifnotmobile:<...>} to produce URLs simulating
* clicks from either mobile or non-mobile devices.
* 2. {ifsearch:<...>} and {ifcontent:<...>} to produce URLs simulating
* clicks on either the search or display networks.
* Any other ValueTrack parameters or customer parameters are stripped out from
* the URL entirely.
*
* @param {string} url The URL which may contain ValueTrack parameters.
* @return {!Array.<string>} An array of one or more expanded URLs.
*/
function expandUrlModifiers(url) {
var ifRegex = /({(if\w+):([^}]+)})/gi;
var modifiers = {};
var matches;
while (matches = ifRegex.exec(url)) {
// Tags are case-insensitive, e.g. IfMobile is valid.
modifiers[matches[2].toLowerCase()] = {
substitute: matches[0],
replacement: matches[3]
};
}
if (Object.keys(modifiers).length) {
if (modifiers.ifmobile || modifiers.ifnotmobile) {
var mobileCombinations =
pairedUrlModifierReplace(modifiers, 'ifmobile', 'ifnotmobile', url);
} else {
var mobileCombinations = [url];
}
// Store in a map on the offchance that there are duplicates.
var combinations = {};
mobileCombinations.forEach(function(url) {
if (modifiers.ifsearch || modifiers.ifcontent) {
pairedUrlModifierReplace(modifiers, 'ifsearch', 'ifcontent', url)
.forEach(function(modifiedUrl) {
combinations[modifiedUrl] = true;
});
} else {
combinations[url] = true;
}
});
var modifiedUrls = Object.keys(combinations);
} else {
var modifiedUrls = [url];
}
// Remove any custom parameters
return modifiedUrls.map(function(url) {
return url.replace(/{[0-9a-zA-Z\_\+\:]+}/g, '');
});
}
/**
* Return a pair of URLs, where each of the two modifiers is mutually exclusive,
* one for each combination. e.g. Evaluating ifmobile and ifnotmobile for a
* mobile and a non-mobile scenario.
*
* @param {Object} modifiers A map of ValueTrack modifiers.
* @param {string} modifier1 The modifier to honour in the URL.
* @param {string} modifier2 The modifier to remove from the URL.
* @param {string} url The URL potentially containing ValueTrack parameters.
* @return {Array.<string>} A pair of URLs, as a list.
*/
function pairedUrlModifierReplace(modifiers, modifier1, modifier2, url) {
return [
urlModifierReplace(modifiers, modifier1, modifier2, url),
urlModifierReplace(modifiers, modifier2, modifier1, url)
];
}
/**
* Produces a URL where the first {if...} modifier is set, and the second is
* deleted.
*
* @param {Object} mods A map of ValueTrack modifiers.
* @param {string} mod1 The modifier to honour in the URL.
* @param {string} mod2 The modifier to remove from the URL.
* @param {string} url The URL potentially containing ValueTrack parameters.
* @return {string} The resulting URL with substitions.
*/
function urlModifierReplace(mods, mod1, mod2, url) {
var modUrl = mods[mod1] ?
url.replace(mods[mod1].substitute, mods[mod1].replacement) :
url;
return mods[mod2] ? modUrl.replace(mods[mod2].substitute, '') : modUrl;
}
/**
* Requests a given URL. Retries if the UrlFetchApp QPS limit was reached,
* exponentially backing off on each retry. Throws an exception if it reaches
* the maximum number of retries. Throws an exception if the UrlFetchApp daily
* quota limit was reached.
*
* @param {string} url The URL to test.
* @return {number|string} The response code received when requesting the URL,
* or an error message.
*/
function requestUrl(url) {
var responseCode;
var sleepTime = QUOTA_CONFIG.INIT_SLEEP_TIME;
var numTries = 0;
while (numTries < QUOTA_CONFIG.MAX_TRIES && !responseCode) {
try {
// If UrlFetchApp.fetch() throws an exception, responseCode will remain
// undefined.
responseCode =
UrlFetchApp.fetch(url, {muteHttpExceptions: true}).getResponseCode();
if (CONFIG.THROTTLE > 0) {
Utilities.sleep(CONFIG.THROTTLE);
}
} catch(e) {
if (e.message.indexOf('Service invoked too many times in a short time:')
!= -1) {
Utilities.sleep(sleepTime);
sleepTime *= QUOTA_CONFIG.BACKOFF_FACTOR;
} else if (e.message.indexOf('Service invoked too many times:') != -1) {
throw EXCEPTIONS.LIMIT;
} else {
return e.message;
}
}
numTries++;
}
if (!responseCode) {
throw EXCEPTIONS.QPS;
} else {
return responseCode;
}
}
/**
* Throws an exception if the script is close to timing out.
*/
function checkTimeout() {
if (AdWordsApp.getExecutionInfo().getRemainingTime() <
CONFIG.TIMEOUT_BUFFER) {
throw EXCEPTIONS.TIMEOUT;
}
}
/**
* Returns the number of days between two dates.
*
* @param {Object} from The older Date object.
* @param {Object} to The newer (more recent) Date object.
* @return {number} The number of days between the given dates (possibly
* fractional).
*/
function dayDifference(from, to) {
return (to.getTime() - from.getTime()) / (24 * 3600 * 1000);
}
/**
* Builds a string to be used for withCondition() filtering for whether the
* label is present or not.
*
* @param {boolean} hasLabel True if the label should be present, false if the
* label should not be present.
* @return {string} A condition that can be used in withCondition().
*/
function labelCondition(hasLabel) {
return 'LabelNames ' + (hasLabel ? 'CONTAINS_ANY' : 'CONTAINS_NONE') +
' ["' + CONFIG.LABEL + '"]';
}
/**
* Retrieves an entity by name.
*
* @param {Object} selector A selector for an entity type with a Name field.
* @param {string} name The name to retrieve the entity by.
* @return {Object} The entity, if it exists, or null otherwise.
*/
function getEntityByName(selector, name) {
var entities = selector.withCondition('Name = "' + name + '"').get();
if (entities.hasNext()) {
return entities.next();
} else {
return null;
}
}
/**
* Retrieves a Label object by name.
*
* @param {string} labelName The label name to retrieve.
* @return {Object} The Label object, if it exists, or null otherwise.
*/
function getLabel(labelName) {
return getEntityByName(AdWordsApp.labels(), labelName);
}
/**
* Checks that the account has all provided labels and creates any that are
* missing. Since labels cannot be created in preview mode, throws an exception
* if a label is missing.
*
* @param {Array.<string>} labelNames An array of label names.
*/
function ensureLabels(labelNames) {
for (var i = 0; i < labelNames.length; i++) {
var labelName = labelNames[i];
var label = getLabel(labelName);
if (!label) {
if (!AdWordsApp.getExecutionInfo().isPreview()) {
AdWordsApp.createLabel(labelName);
} else {
throw 'Label ' + labelName + ' is missing and cannot be created in ' +
'preview mode. Please run the script or create the label manually.';
}
}
}
}
/**
* Removes all provided labels from the account. Since labels cannot be removed
* in preview mode, throws an exception in preview mode.
*
* @param {Array.<string>} labelNames An array of label names.
*/
function removeLabels(labelNames) {
if (AdWordsApp.getExecutionInfo().isPreview()) {
throw 'Cannot remove labels in preview mode. Please run the script or ' +
'remove the labels manually.';
}
for (var i = 0; i < labelNames.length; i++) {
var label = getLabel(labelNames[i]);
if (label) {
label.remove();
}
}
}
/**
* Validates the provided spreadsheet URL to make sure that it's set up
* properly. Throws a descriptive error message if validation fails.
*
* @param {string} spreadsheeturl The URL of the spreadsheet to open.
* @return {Spreadsheet} The spreadsheet object itself, fetched from the URL.
* @throws {Error} If the spreadsheet URL hasn't been set
*/
function validateAndGetSpreadsheet(spreadsheeturl) {
if (spreadsheeturl == 'YOUR_SPREADSHEET_URL') {
throw new Error('Please specify a valid Spreadsheet URL. You can find' +
' a link to a template in the associated guide for this script.');
}
return SpreadsheetApp.openByUrl(spreadsheeturl);
}
/**
* Validates the provided email addresses to make sure it's not the default.
* Throws a descriptive error message if validation fails.
*
* @param {Array.<string>} recipientEmails The list of email adresses.
* @throws {Error} If the list of email addresses is still the default
*/
function validateEmailAddresses(recipientEmails) {
if (recipientEmails &&
recipientEmails[0] == 'YOUR_EMAIL_HERE') {
throw new Error('Please either specify a valid email address or clear' +
' the RECIPIENT_EMAILS field.');
}
}