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164 lines
4.5 KiB
JavaScript

'use strict';
module.exports = exports;
const url = require('url');
const fs = require('fs');
const path = require('path');
module.exports.detect = function(opts, config) {
const to = opts.hosted_path;
const uri = url.parse(to);
config.prefix = (!uri.pathname || uri.pathname === '/') ? '' : uri.pathname.replace('/', '');
if (opts.bucket && opts.region) {
config.bucket = opts.bucket;
config.region = opts.region;
config.endpoint = opts.host;
config.s3ForcePathStyle = opts.s3ForcePathStyle;
} else {
const parts = uri.hostname.split('.s3');
const bucket = parts[0];
if (!bucket) {
return;
}
if (!config.bucket) {
config.bucket = bucket;
}
if (!config.region) {
const region = parts[1].slice(1).split('.')[0];
if (region === 'amazonaws') {
config.region = 'us-east-1';
} else {
config.region = region;
}
}
}
};
module.exports.get_s3 = function(config) {
if (process.env.node_pre_gyp_mock_s3) {
// here we're mocking. node_pre_gyp_mock_s3 is the scratch directory
// for the mock code.
const AWSMock = require('mock-aws-s3');
const os = require('os');
AWSMock.config.basePath = `${os.tmpdir()}/mock`;
const s3 = AWSMock.S3();
// wrapped callback maker. fs calls return code of ENOENT but AWS.S3 returns
// NotFound.
const wcb = (fn) => (err, ...args) => {
if (err && err.code === 'ENOENT') {
err.code = 'NotFound';
}
return fn(err, ...args);
};
return {
listObjects(params, callback) {
return s3.listObjects(params, wcb(callback));
},
headObject(params, callback) {
return s3.headObject(params, wcb(callback));
},
deleteObject(params, callback) {
return s3.deleteObject(params, wcb(callback));
},
putObject(params, callback) {
return s3.putObject(params, wcb(callback));
}
};
}
// if not mocking then setup real s3.
const AWS = require('aws-sdk');
AWS.config.update(config);
const s3 = new AWS.S3();
// need to change if additional options need to be specified.
return {
listObjects(params, callback) {
return s3.listObjects(params, callback);
},
headObject(params, callback) {
return s3.headObject(params, callback);
},
deleteObject(params, callback) {
return s3.deleteObject(params, callback);
},
putObject(params, callback) {
return s3.putObject(params, callback);
}
};
};
//
// function to get the mocking control function. if not mocking it returns a no-op.
//
// if mocking it sets up the mock http interceptors that use the mocked s3 file system
// to fulfill reponses.
module.exports.get_mockS3Http = function() {
let mock_s3 = false;
if (!process.env.node_pre_gyp_mock_s3) {
return () => mock_s3;
}
const nock = require('nock');
// the bucket used for testing, as addressed by https.
const host = 'https://mapbox-node-pre-gyp-public-testing-bucket.s3.us-east-1.amazonaws.com';
const mockDir = process.env.node_pre_gyp_mock_s3 + '/mapbox-node-pre-gyp-public-testing-bucket';
// function to setup interceptors. they are "turned off" by setting mock_s3 to false.
const mock_http = () => {
// eslint-disable-next-line no-unused-vars
function get(uri, requestBody) {
const filepath = path.join(mockDir, uri.replace('%2B', '+'));
try {
fs.accessSync(filepath, fs.constants.R_OK);
} catch (e) {
return [404, 'not found\n'];
}
// the mock s3 functions just write to disk, so just read from it.
return [200, fs.createReadStream(filepath)];
}
// eslint-disable-next-line no-unused-vars
return nock(host)
.persist()
.get(() => mock_s3) // mock any uri for s3 when true
.reply(get);
};
// setup interceptors. they check the mock_s3 flag to determine whether to intercept.
mock_http(nock, host, mockDir);
// function to turn matching all requests to s3 on/off.
const mockS3Http = (action) => {
const previous = mock_s3;
if (action === 'off') {
mock_s3 = false;
} else if (action === 'on') {
mock_s3 = true;
} else if (action !== 'get') {
throw new Error(`illegal action for setMockHttp ${action}`);
}
return previous;
};
// call mockS3Http with the argument
// - 'on' - turn it on
// - 'off' - turn it off (used by fetch.test.js so it doesn't interfere with redirects)
// - 'get' - return true or false for 'on' or 'off'
return mockS3Http;
};