minio
Version:
S3 Compatible Cloud Storage client
243 lines (191 loc) • 8.1 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.buildARN = exports.TopicConfig = exports.QueueConfig = exports.ObjectRemovedDeleteMarkerCreated = exports.ObjectRemovedDelete = exports.ObjectRemovedAll = exports.ObjectReducedRedundancyLostObject = exports.ObjectCreatedPut = exports.ObjectCreatedPost = exports.ObjectCreatedCopy = exports.ObjectCreatedCompleteMultipartUpload = exports.ObjectCreatedAll = exports.NotificationPoller = exports.NotificationConfig = exports.CloudFunctionConfig = void 0;
var _events = require("events");
var transformers = _interopRequireWildcard(require("./transformers"));
var _helpers = require("./helpers");
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
/*
* MinIO Javascript Library for Amazon S3 Compatible Cloud Storage, (C) 2016 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Notification config - array of target configs.
// Target configs can be
// 1. Topic (simple notification service)
// 2. Queue (simple queue service)
// 3. CloudFront (lambda function)
class NotificationConfig {
add(target) {
let instance = '';
if (target instanceof TopicConfig) {
instance = 'TopicConfiguration';
}
if (target instanceof QueueConfig) {
instance = 'QueueConfiguration';
}
if (target instanceof CloudFunctionConfig) {
instance = 'CloudFunctionConfiguration';
}
if (!this[instance]) this[instance] = [];
this[instance].push(target);
}
} // Base class for three supported configs.
exports.NotificationConfig = NotificationConfig;
class TargetConfig {
setId(id) {
this.Id = id;
}
addEvent(newevent) {
if (!this.Event) this.Event = [];
this.Event.push(newevent);
}
addFilterSuffix(suffix) {
if (!this.Filter) this.Filter = {
S3Key: {
FilterRule: []
}
};
this.Filter.S3Key.FilterRule.push({
Name: "suffix",
Value: suffix
});
}
addFilterPrefix(prefix) {
if (!this.Filter) this.Filter = {
S3Key: {
FilterRule: []
}
};
this.Filter.S3Key.FilterRule.push({
Name: "prefix",
Value: prefix
});
}
} // 1. Topic (simple notification service)
class TopicConfig extends TargetConfig {
constructor(arn) {
super();
this.Topic = arn;
}
} // 2. Queue (simple queue service)
exports.TopicConfig = TopicConfig;
class QueueConfig extends TargetConfig {
constructor(arn) {
super();
this.Queue = arn;
}
} // 3. CloudFront (lambda function)
exports.QueueConfig = QueueConfig;
class CloudFunctionConfig extends TargetConfig {
constructor(arn) {
super();
this.CloudFunction = arn;
}
}
exports.CloudFunctionConfig = CloudFunctionConfig;
const buildARN = (partition, service, region, accountId, resource) => {
return "arn:" + partition + ":" + service + ":" + region + ":" + accountId + ":" + resource;
};
exports.buildARN = buildARN;
const ObjectCreatedAll = "s3:ObjectCreated:*";
exports.ObjectCreatedAll = ObjectCreatedAll;
const ObjectCreatedPut = "s3:ObjectCreated:Put";
exports.ObjectCreatedPut = ObjectCreatedPut;
const ObjectCreatedPost = "s3:ObjectCreated:Post";
exports.ObjectCreatedPost = ObjectCreatedPost;
const ObjectCreatedCopy = "s3:ObjectCreated:Copy";
exports.ObjectCreatedCopy = ObjectCreatedCopy;
const ObjectCreatedCompleteMultipartUpload = "s3:ObjectCreated:CompleteMultipartUpload";
exports.ObjectCreatedCompleteMultipartUpload = ObjectCreatedCompleteMultipartUpload;
const ObjectRemovedAll = "s3:ObjectRemoved:*";
exports.ObjectRemovedAll = ObjectRemovedAll;
const ObjectRemovedDelete = "s3:ObjectRemoved:Delete";
exports.ObjectRemovedDelete = ObjectRemovedDelete;
const ObjectRemovedDeleteMarkerCreated = "s3:ObjectRemoved:DeleteMarkerCreated";
exports.ObjectRemovedDeleteMarkerCreated = ObjectRemovedDeleteMarkerCreated;
const ObjectReducedRedundancyLostObject = "s3:ReducedRedundancyLostObject"; // Poll for notifications, used in #listenBucketNotification.
// Listening constitutes repeatedly requesting s3 whether or not any
// changes have occurred.
exports.ObjectReducedRedundancyLostObject = ObjectReducedRedundancyLostObject;
class NotificationPoller extends _events.EventEmitter {
constructor(client, bucketName, prefix, suffix, events) {
super();
this.client = client;
this.bucketName = bucketName;
this.prefix = prefix;
this.suffix = suffix;
this.events = events;
this.ending = false;
} // Starts the polling.
start() {
this.ending = false;
process.nextTick(() => {
this.checkForChanges();
});
} // Stops the polling.
stop() {
this.ending = true;
}
checkForChanges() {
// Don't continue if we're looping again but are cancelled.
if (this.ending) return;
let method = 'GET';
var queries = [];
if (this.prefix) {
var prefix = (0, _helpers.uriEscape)(this.prefix);
queries.push(`prefix=${prefix}`);
}
if (this.suffix) {
var suffix = (0, _helpers.uriEscape)(this.suffix);
queries.push(`suffix=${suffix}`);
}
if (this.events) {
this.events.forEach(s3event => queries.push('events=' + (0, _helpers.uriEscape)(s3event)));
}
queries.sort();
var query = '';
if (queries.length > 0) {
query = `${queries.join('&')}`;
}
const region = this.client.region || _helpers.DEFAULT_REGION;
this.client.makeRequest({
method,
bucketName: this.bucketName,
query
}, '', [200], region, true, (e, response) => {
if (e) return this.emit('error', e);
let transformer = transformers.getNotificationTransformer();
(0, _helpers.pipesetup)(response, transformer).on('data', result => {
// Data is flushed periodically (every 5 seconds), so we should
// handle it after flushing from the JSON parser.
let records = result.Records; // If null (= no records), change to an empty array.
if (!records) records = []; // Iterate over the notifications and emit them individually.
records.forEach(record => {
this.emit('notification', record);
}); // If we're done, stop.
if (this.ending) response.destroy();
}).on('error', e => this.emit('error', e)).on('end', () => {
// Do it again, if we haven't cancelled yet.
process.nextTick(() => {
this.checkForChanges();
});
});
});
}
}
exports.NotificationPoller = NotificationPoller;
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