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ratio91/lambda@edge_geolocation-decider_global_rerouting_based_on_continent.js

Created July 12, 2018 11:30
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lambda@edge_geolocation-decider_global_rerouting_based_on_continent.js
/* geolocation-decider - origin request function */
'use strict';
exports.handler = (event, context, callback) => {
const request = event.Records[0].cf.request;
const headers = request.headers;
/*
* Based on the value of the CloudFront-Viewer-Country header, generate an HTTP status code 302 (Redirect) response, and return a specific URL in the Location header.
* CloudFront adds the CloudFront-Viewer-Country header after the viewer request event.
* using http://www.geonames.org/countries/
*/
var continent = {
"AF":"Asia", // "Islamic Republic of Afghanistan")
"AX":"Europe", // "Åland Islands")
"AL":"Europe", // "Republic of Albania")
"DZ":"Africa", // "People's Democratic Republic of Algeria")
"AS":"Oceania", // "American Samoa")
"AD":"Europe", // "Principality of Andorra")
"AO":"Africa", // "Republic of Angola")
"AI":"North America", // "Anguilla")
"AQ":"Antarctica", // "Antarctica (the territory South of 60 deg S)")
"AG":"North America", // "Antigua and Barbuda")
"AR":"South America", // "Argentine Republic")
"AM":"Asia", // "Republic of Armenia")
"AW":"North America", // "Aruba")
"AU":"Oceania", // "Commonwealth of Australia")
"AT":"Europe", // "Republic of Austria")
"AZ":"Asia", // "Republic of Azerbaijan")
"BS":"North America", // "Commonwealth of the Bahamas")
"BH":"Asia", // "Kingdom of Bahrain")
"BD":"Asia", // "People's Republic of Bangladesh")
"BB":"North America", // "Barbados")
"BY":"Europe", // "Republic of Belarus")
"BE":"Europe", // "Kingdom of Belgium")
"BZ":"North America", // "Belize")
"BJ":"Africa", // "Republic of Benin")
"BM":"North America", // "Bermuda")
"BT":"Asia", // "Kingdom of Bhutan")
"BO":"South America", // "Plurinational State of Bolivia")
"BQ":"North America", // '535'
"BA":"Europe", // "Bosnia and Herzegovina")
"BW":"Africa", // "Republic of Botswana")
"BV":"Antarctica", // "Bouvet Island (Bouvetoya)")
"BR":"South America", // "Federative Republic of Brazil")
"IO":"Asia", // "British Indian Ocean Territory (Chagos Archipelago)")
"VG":"North America", // "British Virgin Islands")
"BN":"Asia", // "Brunei Darussalam")
"BG":"Europe", // "Republic of Bulgaria")
"BF":"Africa", // "Burkina Faso")
"BI":"Africa", // "Republic of Burundi")
"KH":"Asia", // "Kingdom of Cambodia")
"CM":"Africa", // "Republic of Cameroon")
"CA":"North America", // "Canada")
"CV":"Africa", // "Republic of Cape Verde")
"KY":"North America", // "Cayman Islands")
"CF":"Africa", // "Central African Republic")
"TD":"Africa", // "Republic of Chad")
"CL":"South America", // "Republic of Chile")
"CN":"Asia", // "People's Republic of China")
"CX":"Asia", // "Christmas Island")
"CC":"Asia", // "Cocos (Keeling) Islands")
"CO":"South America", // "Republic of Colombia")
"KM":"Africa", // "Union of the Comoros")
"CD":"Africa", // "Democratic Republic of the Congo")
"CG":"Africa", // "Republic of the Congo")
"CK":"Oceania", // "Cook Islands")
"CR":"North America", // "Republic of Costa Rica")
"CI":"Africa", // "Republic of Cote d'Ivoire")
"HR":"Europe", // "Republic of Croatia")
"CU":"North America", // "Republic of Cuba")
"CW":"North America", // "Curaçao")
"CY":"Asia", // "Republic of Cyprus")
"CZ":"Europe", // "Czech Republic")
"DK":"Europe", // "Kingdom of Denmark")
"DJ":"Africa", // "Republic of Djibouti")
"DM":"North America", // "Commonwealth of Dominica")
"DO":"North America", // "Dominican Republic")
"EC":"South America", // "Republic of Ecuador")
"EG":"Africa", // "Arab Republic of Egypt")
"SV":"North America", // "Republic of El Salvador")
"GQ":"Africa", // "Republic of Equatorial Guinea")
"ER":"Africa", // "State of Eritrea")
"EE":"Europe", // "Republic of Estonia")
"ET":"Africa", // "Federal Democratic Republic of Ethiopia")
"FO":"Europe", // "Faroe Islands")
"FK":"South America", // "Falkland Islands (Malvinas)")
"FJ":"Oceania", // "Republic of Fiji")
"FI":"Europe", // "Republic of Finland")
"FR":"Europe", // "French Republic")
"GF":"South America", // "French Guiana")
"PF":"Oceania", // "French Polynesia")
"TF":"Antarctica", // "French Southern Territories")
"GA":"Africa", // "Gabonese Republic")
"GM":"Africa", // "Republic of the Gambia")
"GE":"Asia", // "Georgia")
"DE":"Europe", // "Federal Republic of Germany")
"GH":"Africa", // "Republic of Ghana")
"GI":"Europe", // "Gibraltar")
"GR":"Europe", // "Hellenic Republic Greece")
"GL":"North America", // "Greenland")
"GD":"North America", // "Grenada")
"GP":"North America", // "Guadeloupe")
"GU":"Oceania", // "Guam")
"GT":"North America", // "Republic of Guatemala")
"GG":"Europe", // "Bailiwick of Guernsey")
"GN":"Africa", // "Republic of Guinea")
"GW":"Africa", // "Republic of Guinea-Bissau")
"GY":"South America", // "Co-operative Republic of Guyana")
"HT":"North America", // "Republic of Haiti")
"HM":"Antarctica", // "Heard Island and McDonald Islands")
"VA":"Europe", // "Holy See (Vatican City State)")
"HN":"North America", // "Republic of Honduras")
"HK":"Asia", // "Hong Kong Special Administrative Region of China")
"HU":"Europe", // "Hungary")
"IS":"Europe", // "Republic of Iceland")
"IN":"Asia", // "Republic of India")
"ID":"Asia", // "Republic of Indonesia")
"IR":"Asia", // "Islamic Republic of Iran")
"IQ":"Asia", // "Republic of Iraq")
"IE":"Europe", // "Ireland")
"IM":"Europe", // "Isle of Man")
"IL":"Asia", // "State of Israel")
"IT":"Europe", // "Italian Republic")
"JM":"North America", // "Jamaica")
"JP":"Asia", // "Japan")
"JE":"Europe", // "Bailiwick of Jersey")
"JO":"Asia", // "Hashemite Kingdom of Jordan")
"KZ":"Asia", // "Republic of Kazakhstan")
"KE":"Africa", // "Republic of Kenya")
"KI":"Oceania", // "Republic of Kiribati")
"KP":"Asia", // "Democratic People's Republic of Korea")
"KR":"Asia", // "Republic of Korea")
"KW":"Asia", // "State of Kuwait")
"KG":"Asia", // "Kyrgyz Republic")
"LA":"Asia", // "Lao People's Democratic Republic")
"LV":"Europe", // "Republic of Latvia")
"LB":"Asia", // "Lebanese Republic")
"LS":"Africa", // "Kingdom of Lesotho")
"LR":"Africa", // "Republic of Liberia")
"LY":"Africa", // "Libya")
"LI":"Europe", // "Principality of Liechtenstein")
"LT":"Europe", // "Republic of Lithuania")
"LU":"Europe", // "Grand Duchy of Luxembourg")
"MO":"Asia", // "Macao Special Administrative Region of China")
"MK":"Europe", // "Republic of Macedonia")
"MG":"Africa", // "Republic of Madagascar")
"MW":"Africa", // "Republic of Malawi")
"MY":"Asia", // "Malaysia")
"MV":"Asia", // "Republic of Maldives")
"ML":"Africa", // "Republic of Mali")
"MT":"Europe", // "Republic of Malta")
"MH":"Oceania", // "Republic of the Marshall Islands")
"MQ":"North America", // "Martinique")
"MR":"Africa", // "Islamic Republic of Mauritania")
"MU":"Africa", // "Republic of Mauritius")
"YT":"Africa", // "Mayotte")
"MX":"North America", // "United Mexican States")
"FM":"Oceania", // "Federated States of Micronesia")
"MD":"Europe", // "Republic of Moldova")
"MC":"Europe", // "Principality of Monaco")
"MN":"Asia", // "Mongolia")
"ME":"Europe", // "Montenegro")
"MS":"North America", // "Montserrat")
"MA":"Africa", // "Kingdom of Morocco")
"MZ":"Africa", // "Republic of Mozambique")
"MM":"Asia", // "Republic of the Union of Myanmar")
"NA":"Africa", // "Republic of Namibia")
"NR":"Oceania", // "Republic of Nauru")
"NP":"Asia", // "Federal Democratic Republic of Nepal")
"NL":"Europe", // "Kingdom of the Netherlands")
"NC":"Oceania", // "New Caledonia")
"NZ":"Oceania", // "New Zealand")
"NI":"North America", // "Republic of Nicaragua")
"NE":"Africa", // "Republic of Niger")
"NG":"Africa", // "Federal Republic of Nigeria")
"NU":"Oceania", // "Niue")
"NF":"Oceania", // "Norfolk Island")
"MP":"Oceania", // "Commonwealth of the Northern Mariana Islands")
"NO":"Europe", // "Kingdom of Norway")
"OM":"Asia", // "Sultanate of Oman")
"PK":"Asia", // "Islamic Republic of Pakistan")
"PW":"Oceania", // "Republic of Palau")
"PS":"Asia", // "Occupied Palestinian Territory")
"PA":"North America", // "Republic of Panama")
"PG":"Oceania", // "Independent State of Papua New Guinea")
"PY":"South America", // "Republic of Paraguay")
"PE":"South America", // "Republic of Peru")
"PH":"Asia", // "Republic of the Philippines")
"PN":"Oceania", // "Pitcairn Islands")
"PL":"Europe", // "Republic of Poland")
"PT":"Europe", // "Portuguese Republic")
"PR":"North America", // "Commonwealth of Puerto Rico")
"QA":"Asia", // "State of Qatar")
"RE":"Africa", // "Réunion")
"RO":"Europe", // "Romania")
"RU":"Europe", // "Russian Federation")
"RW":"Africa", // "Republic of Rwanda")
"BL":"North America", // "Saint Barthélemy")
"SH":"Africa", // '654'
"KN":"North America", // "Federation of Saint Kitts and Nevis")
"LC":"North America", // "Saint Lucia")
"MF":"North America", // "Saint Martin (French part)")
"PM":"North America", // "Saint Pierre and Miquelon")
"VC":"North America", // "Saint Vincent and the Grenadines")
"WS":"Oceania", // "Independent State of Samoa")
"SM":"Europe", // "Republic of San Marino")
"ST":"Africa", // "Democratic Republic of Sao Tome and Principe")
"SA":"Asia", // "Kingdom of Saudi Arabia")
"SN":"Africa", // "Republic of Senegal")
"RS":"Europe", // "Republic of Serbia")
"SC":"Africa", // "Republic of Seychelles")
"SL":"Africa", // "Republic of Sierra Leone")
"SG":"Asia", // "Republic of Singapore")
"SX":"North America", // "Sint Maarten (Dutch part)")
"SK":"Europe", // "Slovakia (Slovak Republic)")
"SI":"Europe", // "Republic of Slovenia")
"SB":"Oceania", // "Solomon Islands")
"SO":"Africa", // "Somali Republic")
"ZA":"Africa", // "Republic of South Africa")
"GS":"Antarctica", // "South Georgia and the South Sandwich Islands")
"SS":"Africa", // "Republic of South Sudan")
"ES":"Europe", // "Kingdom of Spain")
"LK":"Asia", // "Democratic Socialist Republic of Sri Lanka")
"SD":"Africa", // "Republic of Sudan")
"SR":"South America", // "Republic of Suriname")
"SJ":"Europe", // "Svalbard & Jan Mayen Islands")
"SZ":"Africa", // "Kingdom of Swaziland")
"SE":"Europe", // "Kingdom of Sweden")
"CH":"Europe", // "Swiss Confederation")
"SY":"Asia", // "Syrian Arab Republic")
"TW":"Asia", // "Taiwan
"TJ":"Asia", // "Republic of Tajikistan")
"TZ":"Africa", // "United Republic of Tanzania")
"TH":"Asia", // "Kingdom of Thailand")
"TL":"Asia", // "Democratic Republic of Timor-Leste")
"TG":"Africa", // "Togolese Republic")
"TK":"Oceania", // "Tokelau")
"TO":"Oceania", // "Kingdom of Tonga")
"TT":"North America", // "Republic of Trinidad and Tobago")
"TN":"Africa", // "Tunisian Republic")
"TR":"Asia", // "Republic of Turkey")
"TM":"Asia", // "Turkmenistan")
"TC":"North America", // "Turks and Caicos Islands")
"TV":"Oceania", // "Tuvalu")
"UG":"Africa", // "Republic of Uganda")
"UA":"Europe", // "Ukraine")
"AE":"Asia", // "United Arab Emirates")
"GB":"Europe", // "United Kingdom of Great Britain & Northern Ireland")
"US":"North America", // "United States of America")
"UM":"Oceania", // "United States Minor Outlying Islands")
"VI":"North America", // "United States Virgin Islands")
"UY":"South America", // "Eastern Republic of Uruguay")
"UZ":"Asia", // "Republic of Uzbekistan")
"VU":"Oceania", // "Republic of Vanuatu")
"VE":"South America", // "Bolivarian Republic of Venezuela")
"VN":"Asia", // "Socialist Republic of Vietnam")
"WF":"Oceania", // "Wallis and Futuna")
"EH":"Africa", // "Western Sahara")
"YE":"Asia", // "Yemen")
"ZM":"Africa", // "Republic of Zambia")
"ZW":"Africa" // "Republic of Zimbabwe");
}
//default origin
let url = 'https://XXX';
if (headers['cloudfront-viewer-country']) {
// US origin
let countryContinent = continent[headers['cloudfront-viewer-country'][0].value];
if (countryContinent != "Europe") {
url = 'https://XXX';
}
}
const response = {
header: headers['cloudfront-viewer-country'][0].value,
status: '302',
statusDescription: 'Found',
headers: {
location: [{
key: 'Location',
value: url,
}],
},
};
callback(null, response);
};
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