mirror of
https://github.com/cderche/greenlock-storage-s3
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90 lines
2.9 KiB
JavaScript
90 lines
2.9 KiB
JavaScript
var util = require('../util');
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var AWS = require('../core');
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/**
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* Prepend prefix defined by API model to endpoint that's already
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* constructed. This feature does not apply to operations using
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* endpoint discovery and can be disabled.
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* @api private
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*/
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function populateHostPrefix(request) {
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var enabled = request.service.config.hostPrefixEnabled;
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if (!enabled) return request;
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var operationModel = request.service.api.operations[request.operation];
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//don't marshal host prefix when operation has endpoint discovery traits
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if (hasEndpointDiscover(request)) return request;
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if (operationModel.endpoint && operationModel.endpoint.hostPrefix) {
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var hostPrefixNotation = operationModel.endpoint.hostPrefix;
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var hostPrefix = expandHostPrefix(hostPrefixNotation, request.params, operationModel.input);
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prependEndpointPrefix(request.httpRequest.endpoint, hostPrefix);
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validateHostname(request.httpRequest.endpoint.hostname);
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}
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return request;
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}
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/**
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* @api private
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*/
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function hasEndpointDiscover(request) {
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var api = request.service.api;
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var operationModel = api.operations[request.operation];
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var isEndpointOperation = api.endpointOperation && (api.endpointOperation === util.string.lowerFirst(operationModel.name));
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return (operationModel.endpointDiscoveryRequired !== 'NULL' || isEndpointOperation === true);
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}
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/**
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* @api private
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*/
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function expandHostPrefix(hostPrefixNotation, params, shape) {
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util.each(shape.members, function(name, member) {
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if (member.hostLabel === true) {
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if (typeof params[name] !== 'string' || params[name] === '') {
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throw util.error(new Error(), {
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message: 'Parameter ' + name + ' should be a non-empty string.',
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code: 'InvalidParameter'
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});
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}
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var regex = new RegExp('\\{' + name + '\\}', 'g');
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hostPrefixNotation = hostPrefixNotation.replace(regex, params[name]);
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}
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});
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return hostPrefixNotation;
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}
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/**
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* @api private
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*/
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function prependEndpointPrefix(endpoint, prefix) {
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if (endpoint.host) {
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endpoint.host = prefix + endpoint.host;
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}
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if (endpoint.hostname) {
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endpoint.hostname = prefix + endpoint.hostname;
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}
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}
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/**
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* @api private
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*/
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function validateHostname(hostname) {
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var labels = hostname.split('.');
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//Reference: https://tools.ietf.org/html/rfc1123#section-2
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var hostPattern = /^[a-zA-Z0-9]{1}$|^[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9]$/;
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util.arrayEach(labels, function(label) {
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if (!label.length || label.length < 1 || label.length > 63) {
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throw util.error(new Error(), {
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code: 'ValidationError',
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message: 'Hostname label length should be between 1 to 63 characters, inclusive.'
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});
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}
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if (!hostPattern.test(label)) {
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throw AWS.util.error(new Error(),
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{code: 'ValidationError', message: label + ' is not hostname compatible.'});
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}
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});
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}
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module.exports = {
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populateHostPrefix: populateHostPrefix
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};
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