scratch-www/bin/configure-fastly.js
Colby Gutierrez-Kraybill 7b7306e7f9
Merge pull request #1721 from LLK/hotfix/cache-nav-session-endpoints
[Master] Hotfix/cache nav session endpoints @rschamp said I should.
2017-12-01 16:13:38 -05:00

190 lines
8.1 KiB
JavaScript

var async = require('async');
var defaults = require('lodash.defaults');
var fastlyConfig = require('./lib/fastly-config-methods');
const languages = require('../languages.json');
var route_json = require('../src/routes.json');
const FASTLY_SERVICE_ID = process.env.FASTLY_SERVICE_ID || '';
const S3_BUCKET_NAME = process.env.S3_BUCKET_NAME || '';
var fastly = require('./lib/fastly-extended')(process.env.FASTLY_API_KEY, FASTLY_SERVICE_ID);
var extraAppRoutes = [
// Homepage with querystring.
// TODO: Should this be added for every route?
'/\\?',
// View html
'/[^\/]*\.html$'
];
var routes = route_json.map(function (route) {
return defaults({}, {pattern: fastlyConfig.expressPatternToRegex(route.pattern)}, route);
});
async.auto({
version: function (cb) {
fastly.getLatestVersion(function (err, response) {
if (err) return cb(err);
// Validate latest version before continuing
if (response.active || response.locked) {
fastly.cloneVersion(response.number, function (err, response) {
if (err) return cb('Failed to clone latest version: ' + err);
cb(null, response.number);
});
} else {
cb(null, response.number);
}
});
},
recvCustomVCL: ['version', function (cb, results) {
// For all the routes in routes.json, construct a varnish-style regex that matches
// on any of those route conditions.
var notPassStatement = fastlyConfig.getAppRouteCondition('../build/*', routes, extraAppRoutes, __dirname);
// For a non-pass condition, point backend at s3
var recvCondition = '' +
'if (' + notPassStatement + ') {\n' +
' set req.backend = F_s3;\n' +
' set req.http.host = \"' + S3_BUCKET_NAME + '\";\n' +
'} else {\n' +
' if (!req.http.Fastly-FF) {\n' +
' if (req.http.X-Forwarded-For) {\n' +
' set req.http.Fastly-Temp-XFF = req.http.X-Forwarded-For \", \" client.ip;\n' +
' } else {\n' +
' set req.http.Fastly-Temp-XFF = client.ip;\n' +
' }\n' +
' } else {\n' +
' set req.http.Fastly-Temp-XFF = req.http.X-Forwarded-For;\n' +
' }\n' +
' set req.grace = 60s;\n' +
' if (req.http.Cookie:scratchlanguage) {\n' +
' set req.http.Accept-Language = req.http.Cookie:scratchlanguage;\n' +
' } else {\n' +
' set req.http.Accept-Language = accept.language_lookup("' +
Object.keys(languages).join(':') + '", ' +
'"en", ' +
'std.tolower(req.http.Accept-Language)' +
');\n' +
' }\n' +
' if (req.url ~ "^(/projects/|/fragment/account-nav.json|/session/)" && ' +
'!req.http.Cookie:scratchsessionsid) {\n' +
' set req.http.Cookie = "scratchlanguage=" req.http.Cookie:scratchlanguage;\n' +
' } else {\n' +
' return(pass);\n' +
' }\n' +
'}\n';
fastly.setCustomVCL(
results.version,
'recv-condition',
recvCondition,
cb
);
}],
fetchCustomVCL: ['version', function (cb, results) {
var passStatement = fastlyConfig.negateConditionStatement(
fastlyConfig.getAppRouteCondition('../build/*', routes, extraAppRoutes, __dirname)
);
var ttlCondition = fastlyConfig.setResponseTTL(passStatement);
fastly.setCustomVCL(results.version, 'fetch-condition', ttlCondition, cb);
}],
appRouteRequestConditions: ['version', function (cb, results) {
var conditions = {};
async.forEachOf(routes, function (route, id, cb2) {
var condition = {
name: fastlyConfig.getConditionNameForRoute(route, 'request'),
statement: 'req.url ~ "' + route.pattern + '"',
type: 'REQUEST',
// Priority needs to be > 1 to not interact with http->https redirect
priority: 10 + id
};
fastly.setCondition(results.version, condition, function (err, response) {
if (err) return cb2(err);
conditions[id] = response;
cb2(null, response);
});
}, function (err) {
if (err) return cb(err);
cb(null, conditions);
});
}],
appRouteHeaders: ['version', 'appRouteRequestConditions', function (cb, results) {
var headers = {};
async.forEachOf(routes, function (route, id, cb2) {
if (route.redirect) {
async.auto({
responseCondition: function (cb3) {
var condition = {
name: fastlyConfig.getConditionNameForRoute(route, 'response'),
statement: 'req.url ~ "' + route.pattern + '"',
type: 'RESPONSE',
priority: id
};
fastly.setCondition(results.version, condition, cb3);
},
responseObject: function (cb3) {
var responseObject = {
name: fastlyConfig.getResponseNameForRoute(route),
status: 301,
response: 'Moved Permanently',
request_condition: fastlyConfig.getConditionNameForRoute(route, 'request')
};
fastly.setResponseObject(results.version, responseObject, cb3);
},
redirectHeader: ['responseCondition', function (cb3, redirectResults) {
var header = {
name: fastlyConfig.getHeaderNameForRoute(route),
action: 'set',
ignore_if_set: 0,
type: 'RESPONSE',
dst: 'http.Location',
src: '"' + route.redirect + '"',
response_condition: redirectResults.responseCondition.name
};
fastly.setFastlyHeader(results.version, header, cb3);
}]
}, function (err, redirectResults) {
if (err) return cb2(err);
headers[id] = redirectResults.redirectHeader;
cb2(null, redirectResults);
});
} else {
var header = {
name: fastlyConfig.getHeaderNameForRoute(route, 'request'),
action: 'set',
ignore_if_set: 0,
type: 'REQUEST',
dst: 'url',
src: '"/' + route.name + '.html"',
request_condition: results.appRouteRequestConditions[id].name,
priority: 10
};
fastly.setFastlyHeader(results.version, header, function (err, response) {
if (err) return cb2(err);
headers[id] = response;
cb2(null, response);
});
}
}, function (err) {
if (err) return cb(err);
cb(null, headers);
});
}]},
function (err, results) {
if (err) throw new Error(err);
if (process.env.FASTLY_ACTIVATE_CHANGES) {
fastly.activateVersion(results.version, function (err, response) {
if (err) throw new Error(err);
process.stdout.write('Successfully configured and activated version ' + response.number + '\n');
if (process.env.FASTLY_PURGE_ALL) {
fastly.purgeAll(FASTLY_SERVICE_ID, function (err) {
if (err) throw new Error(err);
process.stdout.write('Purged all.\n');
});
}
});
}
}
);