93 lines
2.9 KiB
JavaScript
93 lines
2.9 KiB
JavaScript
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'use strict';
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module.exports = exports;
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const url = require('url');
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module.exports.detect = function(opts) {
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const config = {};
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const to = opts.hosted_path;
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const uri = url.parse(to);
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if (opts.bucket && opts.region) {
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// use user defined settings for host, region, bucket
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config.endpoint = opts.host;
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config.bucket = opts.bucket;
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config.region = opts.region;
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config.s3ForcePathStyle = opts.s3ForcePathStyle;
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// if using s3ForcePathStyle the bucket is part of the http object path
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// but not the S3 key prefix path.
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// remove it
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const bucketPath = config.s3ForcePathStyle ? `/${config.bucket}/` : '/';
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config.prefix = (!uri.pathname || uri.pathname === bucketPath) ? '' : uri.pathname.replace(bucketPath, '');
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} else {
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// auto detect region and bucket from url
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// only virtual-hosted–style access can be auto detected
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// the uri will have the following format:
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// https://bucket-name.s3.Region.amazonaws.com/key-name (dash Region)
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// or in some legacy region of this format:
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// https://bucket-name.s3-Region.amazonaws.com/key-name (dot Region)
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const parts = uri.hostname.split('.s3');
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// there is nothing before the .s3
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// not a valid s3 virtual host bucket url
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if (parts.length === 1) {
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throw new Error('Could not parse s3 bucket name from virtual host url.');
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}
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// everything before .s3 is the bucket
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config.bucket = parts[0];
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// from everything that comes after the s3
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// first char is connecting dot or dash
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// everything up to the domain should be the region name
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const region = parts[1].slice(1).split('.')[0];
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// if user provided url does not include region, default to us-east-1.
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if (region === 'amazonaws') {
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config.region = 'us-east-1';
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} else {
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config.region = region;
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}
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config.prefix = (!uri.pathname || uri.pathname === '/') ? '' : uri.pathname.replace('/', '');
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}
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return config;
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};
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module.exports.get_s3 = function(config) {
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// setting an environment variable: node_pre_gyp_mock_s3 to any value
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// enables intercepting outgoing http requests to s3 (using nock) and
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// serving them from a mocked S3 file system (using mock-aws-s3)
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if (process.env.node_pre_gyp_mock_s3) {
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return require('../mock/s3')();
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}
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// if not mocking then setup real s3.
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const AWS = require('aws-sdk');
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AWS.config.update(config);
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const s3 = new AWS.S3();
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// need to change if additional options need to be specified.
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return {
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listObjects(params, callback) {
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return s3.listObjects(params, callback);
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},
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headObject(params, callback) {
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return s3.headObject(params, callback);
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},
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deleteObject(params, callback) {
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return s3.deleteObject(params, callback);
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},
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putObject(params, callback) {
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return s3.putObject(params, callback);
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},
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getObject(params, callback) {
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return s3.getObject(params, callback);
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}
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};
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};
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