mirror of
https://github.com/scratchfoundation/scratch-www.git
synced 2024-11-23 15:47:53 -05:00
291 lines
12 KiB
JavaScript
291 lines
12 KiB
JavaScript
const async = require('async');
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const defaults = require('lodash.defaults');
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const fastlyConfig = require('./lib/fastly-config-methods');
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const languages = require('scratch-l10n').default;
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const routeJson = require('../src/routes.json');
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const FASTLY_SERVICE_ID = process.env.FASTLY_SERVICE_ID || '';
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const S3_BUCKET_NAME = process.env.S3_BUCKET_NAME || '';
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const RADISH_URL = process.env.RADISH_URL || '';
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const fastly = require('./lib/fastly-extended')(process.env.FASTLY_API_KEY, FASTLY_SERVICE_ID);
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const extraAppRoutes = [
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// Homepage with querystring.
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// TODO: Should this be added for every route?
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'/\\?',
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// View html
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'/[^/]*.html$'
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];
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const routeJsonPreProcessed = routeJson.map(
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route => {
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if (route.redirect) {
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process.stdout.write(`Updating: ${route.redirect} to `);
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route.redirect = route.redirect.replace('RADISH_URL', RADISH_URL);
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process.stdout.write(`${route.redirect}\n`);
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}
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return route;
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}
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);
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const routes = routeJsonPreProcessed.map(
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route => defaults({}, {pattern: fastlyConfig.expressPatternToRegex(route.pattern)}, route)
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);
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async.auto({
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version: function (cb) {
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fastly.getLatestActiveVersion((err, response) => {
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if (err) return cb(err);
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// Validate latest version before continuing
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if (response.active || response.locked) {
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fastly.cloneVersion(response.number, (e, resp) => {
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if (e) return cb(`Failed to clone latest version: ${e}`);
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cb(null, resp.number);
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});
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} else {
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cb(null, response.number);
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}
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});
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},
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recvCustomVCL: ['version', function (results, cb) {
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// For all the routes in routes.json, construct a varnish-style regex that matches
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// on any of those route conditions.
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const notPassStatement = fastlyConfig.getAppRouteCondition('../build/*', routes, extraAppRoutes, __dirname);
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// For a non-pass condition, point backend at s3
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const recvCondition = `${'' +
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'if ('}${notPassStatement}) {\n` +
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` set req.backend = F_s3;\n` +
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` set req.http.host = "${S3_BUCKET_NAME}";\n` +
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`} else {\n` +
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` if (!req.http.Fastly-FF) {\n` +
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` if (req.http.X-Forwarded-For) {\n` +
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` set req.http.Fastly-Temp-XFF = req.http.X-Forwarded-For ", " client.ip;\n` +
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` } else {\n` +
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` set req.http.Fastly-Temp-XFF = client.ip;\n` +
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` }\n` +
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` } else {\n` +
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` set req.http.Fastly-Temp-XFF = req.http.X-Forwarded-For;\n` +
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` }\n` +
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` set req.grace = 60s;\n` +
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` if (req.http.Cookie:scratchlanguage) {\n` +
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` set req.http.Accept-Language = req.http.Cookie:scratchlanguage;\n` +
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` } else {\n` +
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` set req.http.Accept-Language = accept.language_lookup("${
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Object.keys(languages).join(':')}", ` +
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`"en", ` +
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`std.tolower(req.http.Accept-Language)` +
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`);\n` +
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` }\n` +
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` if (req.url ~ "^(/projects/|/fragment/account-nav.json|/session/)" && ` +
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`!req.http.Cookie:scratchsessionsid) {\n` +
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` set req.http.Cookie = "scratchlanguage=" req.http.Cookie:scratchlanguage;\n` +
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` } else {\n` +
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` return(pass);\n` +
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` }\n` +
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`}\n`;
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fastly.setCustomVCL(
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results.version,
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'recv-condition',
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recvCondition,
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cb
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);
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}],
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fetchCustomVCL: ['version', function (results, cb) {
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const passStatement = fastlyConfig.negateConditionStatement(
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fastlyConfig.getAppRouteCondition('../build/*', routes, extraAppRoutes, __dirname)
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);
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const ttlCondition = fastlyConfig.setResponseTTL(passStatement);
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fastly.setCustomVCL(results.version, 'fetch-condition', ttlCondition, cb);
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}],
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appRouteRequestConditions: ['version', function (results, cb) {
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const conditions = {};
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async.forEachOf(routes, (route, id, cb2) => {
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const condition = {
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name: fastlyConfig.getConditionNameForRoute(route, 'request'),
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statement: `req.url.path ~ "${route.pattern}"`,
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type: 'REQUEST',
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// Priority needs to be > 1 to not interact with http->https redirect
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priority: 10 + id
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};
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fastly.setCondition(results.version, condition, (err, response) => {
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if (err) return cb2(err);
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conditions[id] = response;
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cb2(null, response);
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});
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}, err => {
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if (err) return cb(err);
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cb(null, conditions);
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});
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}],
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appRouteHeaders: ['version', 'appRouteRequestConditions', function (results, cb) {
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const headers = {};
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async.forEachOf(routes, (route, id, cb2) => {
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if (route.redirect) {
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async.auto({
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responseCondition: function (cb3) {
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const condition = {
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name: fastlyConfig.getConditionNameForRoute(route, 'response'),
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statement: `req.url.path ~ "${route.pattern}"`,
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type: 'RESPONSE',
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priority: id
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};
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fastly.setCondition(results.version, condition, cb3);
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},
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responseObject: function (cb3) {
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const responseObject = {
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name: fastlyConfig.getResponseNameForRoute(route),
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status: 301,
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response: 'Moved Permanently',
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request_condition: fastlyConfig.getConditionNameForRoute(route, 'request')
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};
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fastly.setResponseObject(results.version, responseObject, cb3);
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},
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redirectHeader: ['responseCondition', function (redirectResults, cb3) {
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const header = {
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name: fastlyConfig.getHeaderNameForRoute(route),
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action: 'set',
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ignore_if_set: 0,
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type: 'RESPONSE',
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dst: 'http.Location',
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src: `"${route.redirect}"`,
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response_condition: redirectResults.responseCondition.name
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};
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fastly.setFastlyHeader(results.version, header, cb3);
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}]
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}, (err, redirectResults) => {
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if (err) return cb2(err);
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headers[id] = redirectResults.redirectHeader;
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cb2(null, redirectResults);
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});
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} else {
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const header = {
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name: fastlyConfig.getHeaderNameForRoute(route, 'request'),
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action: 'set',
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ignore_if_set: 0,
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type: 'REQUEST',
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dst: 'url',
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src: `"/${route.name}.html"`,
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request_condition: results.appRouteRequestConditions[id].name,
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priority: 10
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};
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fastly.setFastlyHeader(results.version, header, (err, response) => {
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if (err) return cb2(err);
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headers[id] = response;
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cb2(null, response);
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});
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}
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}, err => {
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if (err) return cb(err);
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cb(null, headers);
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});
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}],
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tipbarRedirectHeaders: ['version', function (results, cb) {
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async.auto({
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requestCondition: function (cb2) {
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const condition = {
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name: 'routes/?tip_bar= (request)',
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statement: 'req.url ~ "\\?tip_bar="',
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type: 'REQUEST',
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priority: 10
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};
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fastly.setCondition(results.version, condition, cb2);
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},
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responseCondition: function (cb2) {
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const condition = {
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name: 'routes/?tip_bar= (response)',
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statement: 'req.url ~ "\\?tip_bar="',
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type: 'RESPONSE',
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priority: 10
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};
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fastly.setCondition(results.version, condition, cb2);
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},
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responseObject: ['requestCondition', function (redirectResults, cb2) {
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const responseObject = {
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name: 'redirects/?tip_bar=',
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status: 301,
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response: 'Moved Permanently',
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request_condition: redirectResults.requestCondition.name
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};
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fastly.setResponseObject(results.version, responseObject, cb2);
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}],
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redirectHeader: ['responseCondition', function (redirectResults, cb2) {
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const header = {
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name: 'redirects/?tip_bar=',
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action: 'set',
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ignore_if_set: 0,
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type: 'RESPONSE',
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dst: 'http.Location',
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src: 'regsub(req.url, "tip_bar=", "tutorial=")',
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response_condition: redirectResults.responseCondition.name
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};
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fastly.setFastlyHeader(results.version, header, cb2);
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}]
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}, (err, redirectResults) => {
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if (err) return cb(err);
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cb(null, redirectResults);
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});
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}],
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embedRedirectHeaders: ['version', function (results, cb) {
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async.auto({
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requestCondition: function (cb2) {
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const condition = {
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name: 'routes/projects/embed (request)',
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statement: 'req.url.path ~ "^/projects/embed/(\\d+)"',
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type: 'REQUEST',
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priority: 10
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};
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fastly.setCondition(results.version, condition, cb2);
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},
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responseCondition: function (cb2) {
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const condition = {
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name: 'routes/projects/embed (response)',
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statement: 'req.url.path ~ "^/projects/embed/(\\d+)"',
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type: 'RESPONSE',
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priority: 10
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};
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fastly.setCondition(results.version, condition, cb2);
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},
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responseObject: ['requestCondition', function (redirectResults, cb2) {
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const responseObject = {
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name: 'redirects/projects/embed',
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status: 301,
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response: 'Moved Permanently',
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request_condition: redirectResults.requestCondition.name
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};
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fastly.setResponseObject(results.version, responseObject, cb2);
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}],
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redirectHeader: ['responseCondition', function (redirectResults, cb2) {
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const header = {
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name: 'redirects/projects/embed',
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action: 'set',
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ignore_if_set: 0,
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type: 'RESPONSE',
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dst: 'http.Location',
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src: '"/projects/" + re.group.1 + "/embed"',
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response_condition: redirectResults.responseCondition.name
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};
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fastly.setFastlyHeader(results.version, header, cb2);
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}]
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}, (err, redirectResults) => {
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if (err) return cb(err);
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cb(null, redirectResults);
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});
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}]
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}, (err, results) => {
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if (err) throw new Error(err);
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if (process.env.FASTLY_ACTIVATE_CHANGES) {
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fastly.activateVersion(results.version, (e, resp) => {
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if (e) throw new Error(e);
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process.stdout.write(`Successfully configured and activated version ${resp.number}\n`);
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// purge static-assets using surrogate key
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fastly.purgeKey(FASTLY_SERVICE_ID, 'static-assets', error => {
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if (error) throw new Error(error);
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process.stdout.write('Purged static assets.\n');
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});
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});
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}
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});
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