Merged with master

src/S3Adapter.js

@@ -0,0 +1,77 @@
+// S3Adapter
+//
+// Stores Parse files in AWS S3.
+
+var AWS = require('aws-sdk');
+var path = require('path');
+
+var DEFAULT_REGION = "us-east-1";
+var DEFAULT_BUCKET = "parse-files";
+
+// Creates an S3 session.
+// Providing AWS access and secret keys is mandatory
+// Region and bucket will use sane defaults if omitted
+function S3Adapter(accessKey, secretKey, options) {
+  options = options || {};
+
+  this.region = options.region || DEFAULT_REGION;
+  this.bucket = options.bucket || DEFAULT_BUCKET;
+  this.bucketPrefix = options.bucketPrefix || "";
+  this.directAccess = options.directAccess || false;
+
+  s3Options = {
+    accessKeyId: accessKey,
+    secretAccessKey: secretKey,
+    params: {Bucket: this.bucket}
+  };
+  AWS.config.region = this.region;
+  this.s3 = new AWS.S3(s3Options);
+}
+
+// For a given config object, filename, and data, store a file in S3
+// Returns a promise containing the S3 object creation response
+S3Adapter.prototype.create = function(config, filename, data) {
+  var params = {
+    Key: this.bucketPrefix + filename,
+    Body: data,
+  };
+  if (this.directAccess) {
+    params.ACL = "public-read"
+  }
+
+  return new Promise((resolve, reject) => {
+    this.s3.upload(params, (err, data) => {
+      if (err !== null) return reject(err);
+      resolve(data);
+    });
+  });
+}
+
+// Search for and return a file if found by filename
+// Returns a promise that succeeds with the buffer result from S3
+S3Adapter.prototype.get = function(config, filename) {
+  var params = {Key: this.bucketPrefix + filename};
+
+  return new Promise((resolve, reject) => {
+    this.s3.getObject(params, (err, data) => {
+      if (err !== null) return reject(err);
+      resolve(data.Body);
+    });
+  });
+}
+
+// Generates and returns the location of a file stored in S3 for the given request and
+// filename
+// The location is the direct S3 link if the option is set, otherwise we serve
+// the file through parse-server
+S3Adapter.prototype.location = function(config, req, filename) {
+  if (this.directAccess) {
+    return ('https://' + this.bucket + '.s3.amazonaws.com' + '/' +
+      this.bucketPrefix + filename);
+  }
+  return (req.protocol + '://' + req.get('host') +
+    path.dirname(req.originalUrl) + '/' + req.config.applicationId +
+    '/' + encodeURIComponent(filename));
+}
+
+module.exports = S3Adapter;