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Merge pull request #1707 from colbygk/session-caching

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[Develop] Project page caching
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Colby Gutierrez-Kraybill 2017-11-30 14:01:23 -05:00 committed by GitHub
commit fb28558c67
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3 changed files with 47 additions and 88 deletions
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45
bin/configure-fastly.js
View file

@ -1,6 +1,7 @@
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');
@ -41,23 +42,43 @@ async.auto({
// on any of those route conditions.
var notPassStatement = fastlyConfig.getAppRouteCondition('../build/*', routes, extraAppRoutes, __dirname);
// For all the routes in routes.json, construct a varnish-style regex that matches
// only if NONE of those routes are matched.
var passStatement = fastlyConfig.negateConditionStatement(notPassStatement);
// For a non-pass condition, point backend at s3
var backendCondition = fastlyConfig.setBackend(
'F_s3',
S3_BUCKET_NAME,
notPassStatement
);
// For a pass condition, set forwarding headers
var forwardCondition = fastlyConfig.setForwardHeaders(passStatement);
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/" && !req.http.Cookie:scratchsessionid) {\n' +
' set req.http.Cookie = req.http.Cookie:scratchlanguage;\n' +
' } else {\n' +
' return(pass);\n' +
' }\n' +
'}\n';
fastly.setCustomVCL(
results.version,
'recv-condition',
backendCondition + forwardCondition,
recvCondition,
cb
);
}],

49
bin/lib/fastly-config-methods.js
View file

@ -84,45 +84,6 @@ var FastlyConfigMethods = {
return 'redirects/' + route.pattern;
},
/**
* Returns custom vcl configuration as a string for setting the backend
* of a request to the given backend/host.
*
* @param {string} backend name of the backend declared in fastly
* @param {string} host name of the s3 bucket to be set as the host
* @param {string} condition condition under which backend should be set
*/
setBackend: function (backend, host, condition) {
return '' +
'if (' + condition + ') {\n' +
' set req.backend = ' + backend + ';\n' +
' set req.http.host = \"' + host + '\";\n' +
'}\n';
},
/**
* Returns custom vcl configuration as a string for headers that
* should be added for the condition in which a request is forwarded.
*
* @param {string} condition condition under which to set pass headers
*/
setForwardHeaders: function (condition) {
return '' +
'if (' + condition + ') {\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' +
' return(pass);\n' +
'}\n';
},
/**
* Returns custom vcl configuration as a string that sets the varnish
* Time to Live (TTL) for responses that come from s3.
@ -132,9 +93,13 @@ var FastlyConfigMethods = {
setResponseTTL: function (condition) {
return '' +
'if (' + condition + ') {\n' +
' set beresp.ttl = 0s;\n' +
' set beresp.grace = 0s;\n' +
' return(pass);\n' +
' if (req.url ~ "^/projects/" && !req.http.Cookie:scratchsessionid) {\n' +
' set beresp.http.Vary = "Accept-Encoding, Accept-Language";\n' +
' } else {\n' +
' set beresp.ttl = 0s;\n' +
' set beresp.grace = 0s;\n' +
' return(pass);\n' +
' }\n' +
'}\n';
}
};

41
test/unit/test_fastly_config_methods.js
View file

@ -59,44 +59,17 @@ tap.test('getAppRouteCondition', function (t) {
t.end();
});
tap.test('testSetBackend', function (t) {
var backend = fastlyConfig.setBackend('wemust', 'goback', 'marty');
t.equal(backend, '' +
'if (marty) {\n' +
' set req.backend = wemust;\n' +
' set req.http.host = \"goback\";\n' +
'}\n'
);
t.end();
});
tap.test('testSetForward', function (t) {
var forward = fastlyConfig.setForwardHeaders('alwaysforward');
t.equal(forward, '' +
'if (alwaysforward) {\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' +
' return(pass);\n' +
'}\n'
);
t.end();
});
tap.test('testSetTTL', function (t) {
var ttl = fastlyConfig.setResponseTTL('itsactuallyttyl');
t.equal(ttl, '' +
'if (itsactuallyttyl) {\n' +
' set beresp.ttl = 0s;\n' +
' set beresp.grace = 0s;\n' +
' return(pass);\n' +
' if (req.url ~ "^/projects/" && !req.http.Cookie:scratchsessionid) {\n' +
' set beresp.http.Vary = "Accept-Encoding, Accept-Language";\n' +
' } else {\n' +
' set beresp.ttl = 0s;\n' +
' set beresp.grace = 0s;\n' +
' return(pass);\n' +
' }\n' +
'}\n'
);
t.end();