minio
Version:
S3 Compatible Cloud Storage client
209 lines (197 loc) • 24.3 kB
JavaScript
/*
* 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.
*/
import { EventEmitter } from 'eventemitter3';
import jsonLineParser from 'stream-json/jsonl/Parser.js';
import { DEFAULT_REGION } from "./helpers.mjs";
import { pipesetup, uriEscape } from "./internal/helper.mjs";
// TODO: type this
// Base class for three supported configs.
export 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)
export class TopicConfig extends TargetConfig {
constructor(arn) {
super();
this.Topic = arn;
}
}
// 2. Queue (simple queue service)
export class QueueConfig extends TargetConfig {
constructor(arn) {
super();
this.Queue = arn;
}
}
// 3. CloudFront (lambda function)
export class CloudFunctionConfig extends TargetConfig {
constructor(arn) {
super();
this.CloudFunction = arn;
}
}
// Notification config - array of target configs.
// Target configs can be
// 1. Topic (simple notification service)
// 2. Queue (simple queue service)
// 3. CloudFront (lambda function)
export class NotificationConfig {
add(target) {
let instance;
if (target instanceof TopicConfig) {
instance = this.TopicConfiguration ?? (this.TopicConfiguration = []);
}
if (target instanceof QueueConfig) {
instance = this.QueueConfiguration ?? (this.QueueConfiguration = []);
}
if (target instanceof CloudFunctionConfig) {
instance = this.CloudFunctionConfiguration ?? (this.CloudFunctionConfiguration = []);
}
if (instance) {
instance.push(target);
}
}
}
export const buildARN = (partition, service, region, accountId, resource) => {
return 'arn:' + partition + ':' + service + ':' + region + ':' + accountId + ':' + resource;
};
export const ObjectCreatedAll = 's3:ObjectCreated:*';
export const ObjectCreatedPut = 's3:ObjectCreated:Put';
export const ObjectCreatedPost = 's3:ObjectCreated:Post';
export const ObjectCreatedCopy = 's3:ObjectCreated:Copy';
export const ObjectCreatedCompleteMultipartUpload = 's3:ObjectCreated:CompleteMultipartUpload';
export const ObjectRemovedAll = 's3:ObjectRemoved:*';
export const ObjectRemovedDelete = 's3:ObjectRemoved:Delete';
export const ObjectRemovedDeleteMarkerCreated = 's3:ObjectRemoved:DeleteMarkerCreated';
export const ObjectReducedRedundancyLostObject = 's3:ReducedRedundancyLostObject';
// put string at least so auto-complete could work
// TODO: type this
// Poll for notifications, used in #listenBucketNotification.
// Listening constitutes repeatedly requesting s3 whether or not any
// changes have occurred.
export class NotificationPoller extends 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;
}
const method = 'GET';
const queries = [];
if (this.prefix) {
const prefix = uriEscape(this.prefix);
queries.push(`prefix=${prefix}`);
}
if (this.suffix) {
const suffix = uriEscape(this.suffix);
queries.push(`suffix=${suffix}`);
}
if (this.events) {
this.events.forEach(s3event => queries.push('events=' + uriEscape(s3event)));
}
queries.sort();
let query = '';
if (queries.length > 0) {
query = `${queries.join('&')}`;
}
const region = this.client.region || DEFAULT_REGION;
this.client.makeRequestAsync({
method,
bucketName: this.bucketName,
query
}, '', [200], region).then(response => {
const asm = jsonLineParser.make();
pipesetup(response, asm).on('data', data => {
// Data is flushed periodically (every 5 seconds), so we should
// handle it after flushing from the JSON parser.
let records = data.value.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 === null || response === void 0 ? void 0 : response.destroy();
}
}).on('error', e => this.emit('error', e)).on('end', () => {
// Do it again, if we haven't cancelled yet.
process.nextTick(() => {
this.checkForChanges();
});
});
}, e => {
return this.emit('error', e);
});
}
}
//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"names":["EventEmitter","jsonLineParser","DEFAULT_REGION","pipesetup","uriEscape","TargetConfig","setId","id","Id","addEvent","newevent","Event","push","addFilterSuffix","suffix","Filter","S3Key","FilterRule","Name","Value","addFilterPrefix","prefix","TopicConfig","constructor","arn","Topic","QueueConfig","Queue","CloudFunctionConfig","CloudFunction","NotificationConfig","add","target","instance","TopicConfiguration","QueueConfiguration","CloudFunctionConfiguration","buildARN","partition","service","region","accountId","resource","ObjectCreatedAll","ObjectCreatedPut","ObjectCreatedPost","ObjectCreatedCopy","ObjectCreatedCompleteMultipartUpload","ObjectRemovedAll","ObjectRemovedDelete","ObjectRemovedDeleteMarkerCreated","ObjectReducedRedundancyLostObject","NotificationPoller","client","bucketName","events","ending","start","process","nextTick","checkForChanges","stop","method","queries","forEach","s3event","sort","query","length","join","makeRequestAsync","then","response","asm","make","on","data","records","value","Records","record","emit","destroy","e"],"sources":["notification.ts"],"sourcesContent":["/*\n * MinIO Javascript Library for Amazon S3 Compatible Cloud Storage, (C) 2016 MinIO, Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *     http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { EventEmitter } from 'eventemitter3'\nimport jsonLineParser from 'stream-json/jsonl/Parser.js'\n\nimport { DEFAULT_REGION } from './helpers.ts'\nimport type { TypedClient } from './internal/client.ts'\nimport { pipesetup, uriEscape } from './internal/helper.ts'\n\n// TODO: type this\n\ntype Event = unknown\n\n// Base class for three supported configs.\nexport class TargetConfig {\n  private Filter?: { S3Key: { FilterRule: { Name: string; Value: string }[] } }\n  private Event?: Event[]\n  private Id: unknown\n\n  setId(id: unknown) {\n    this.Id = id\n  }\n\n  addEvent(newevent: Event) {\n    if (!this.Event) {\n      this.Event = []\n    }\n    this.Event.push(newevent)\n  }\n\n  addFilterSuffix(suffix: string) {\n    if (!this.Filter) {\n      this.Filter = { S3Key: { FilterRule: [] } }\n    }\n    this.Filter.S3Key.FilterRule.push({ Name: 'suffix', Value: suffix })\n  }\n\n  addFilterPrefix(prefix: string) {\n    if (!this.Filter) {\n      this.Filter = { S3Key: { FilterRule: [] } }\n    }\n    this.Filter.S3Key.FilterRule.push({ Name: 'prefix', Value: prefix })\n  }\n}\n\n// 1. Topic (simple notification service)\nexport class TopicConfig extends TargetConfig {\n  private Topic: string\n\n  constructor(arn: string) {\n    super()\n    this.Topic = arn\n  }\n}\n\n// 2. Queue (simple queue service)\nexport class QueueConfig extends TargetConfig {\n  private Queue: string\n\n  constructor(arn: string) {\n    super()\n    this.Queue = arn\n  }\n}\n\n// 3. CloudFront (lambda function)\nexport class CloudFunctionConfig extends TargetConfig {\n  private CloudFunction: string\n\n  constructor(arn: string) {\n    super()\n    this.CloudFunction = arn\n  }\n}\n\n// Notification config - array of target configs.\n// Target configs can be\n// 1. Topic (simple notification service)\n// 2. Queue (simple queue service)\n// 3. CloudFront (lambda function)\nexport class NotificationConfig {\n  private TopicConfiguration?: TargetConfig[]\n  private CloudFunctionConfiguration?: TargetConfig[]\n  private QueueConfiguration?: TargetConfig[]\n\n  add(target: TargetConfig) {\n    let instance: TargetConfig[] | undefined\n    if (target instanceof TopicConfig) {\n      instance = this.TopicConfiguration ??= []\n    }\n    if (target instanceof QueueConfig) {\n      instance = this.QueueConfiguration ??= []\n    }\n    if (target instanceof CloudFunctionConfig) {\n      instance = this.CloudFunctionConfiguration ??= []\n    }\n    if (instance) {\n      instance.push(target)\n    }\n  }\n}\n\nexport const buildARN = (partition: string, service: string, region: string, accountId: string, resource: string) => {\n  return 'arn:' + partition + ':' + service + ':' + region + ':' + accountId + ':' + resource\n}\nexport const ObjectCreatedAll = 's3:ObjectCreated:*'\nexport const ObjectCreatedPut = 's3:ObjectCreated:Put'\nexport const ObjectCreatedPost = 's3:ObjectCreated:Post'\nexport const ObjectCreatedCopy = 's3:ObjectCreated:Copy'\nexport const ObjectCreatedCompleteMultipartUpload = 's3:ObjectCreated:CompleteMultipartUpload'\nexport const ObjectRemovedAll = 's3:ObjectRemoved:*'\nexport const ObjectRemovedDelete = 's3:ObjectRemoved:Delete'\nexport const ObjectRemovedDeleteMarkerCreated = 's3:ObjectRemoved:DeleteMarkerCreated'\nexport const ObjectReducedRedundancyLostObject = 's3:ReducedRedundancyLostObject'\nexport type NotificationEvent =\n  | 's3:ObjectCreated:*'\n  | 's3:ObjectCreated:Put'\n  | 's3:ObjectCreated:Post'\n  | 's3:ObjectCreated:Copy'\n  | 's3:ObjectCreated:CompleteMultipartUpload'\n  | 's3:ObjectRemoved:*'\n  | 's3:ObjectRemoved:Delete'\n  | 's3:ObjectRemoved:DeleteMarkerCreated'\n  | 's3:ReducedRedundancyLostObject'\n  | 's3:TestEvent'\n  | 's3:ObjectRestore:Post'\n  | 's3:ObjectRestore:Completed'\n  | 's3:Replication:OperationFailedReplication'\n  | 's3:Replication:OperationMissedThreshold'\n  | 's3:Replication:OperationReplicatedAfterThreshold'\n  | 's3:Replication:OperationNotTracked'\n  | string // put string at least so auto-complete could work\n\n// TODO: type this\nexport type NotificationRecord = unknown\n// Poll for notifications, used in #listenBucketNotification.\n// Listening constitutes repeatedly requesting s3 whether or not any\n// changes have occurred.\nexport class NotificationPoller extends EventEmitter<{\n  notification: (event: NotificationRecord) => void\n  error: (error: unknown) => void\n}> {\n  private client: TypedClient\n  private bucketName: string\n  private prefix: string\n  private suffix: string\n  private events: NotificationEvent[]\n  private ending: boolean\n\n  constructor(client: TypedClient, bucketName: string, prefix: string, suffix: string, events: NotificationEvent[]) {\n    super()\n\n    this.client = client\n    this.bucketName = bucketName\n    this.prefix = prefix\n    this.suffix = suffix\n    this.events = events\n\n    this.ending = false\n  }\n\n  // Starts the polling.\n  start() {\n    this.ending = false\n\n    process.nextTick(() => {\n      this.checkForChanges()\n    })\n  }\n\n  // Stops the polling.\n  stop() {\n    this.ending = true\n  }\n\n  checkForChanges() {\n    // Don't continue if we're looping again but are cancelled.\n    if (this.ending) {\n      return\n    }\n\n    const method = 'GET'\n    const queries = []\n    if (this.prefix) {\n      const prefix = uriEscape(this.prefix)\n      queries.push(`prefix=${prefix}`)\n    }\n    if (this.suffix) {\n      const suffix = uriEscape(this.suffix)\n      queries.push(`suffix=${suffix}`)\n    }\n    if (this.events) {\n      this.events.forEach((s3event) => queries.push('events=' + uriEscape(s3event)))\n    }\n    queries.sort()\n\n    let query = ''\n    if (queries.length > 0) {\n      query = `${queries.join('&')}`\n    }\n    const region = this.client.region || DEFAULT_REGION\n\n    this.client.makeRequestAsync({ method, bucketName: this.bucketName, query }, '', [200], region).then(\n      (response) => {\n        const asm = jsonLineParser.make()\n\n        pipesetup(response, asm)\n          .on('data', (data) => {\n            // Data is flushed periodically (every 5 seconds), so we should\n            // handle it after flushing from the JSON parser.\n            let records = data.value.Records\n            // If null (= no records), change to an empty array.\n            if (!records) {\n              records = []\n            }\n\n            // Iterate over the notifications and emit them individually.\n            records.forEach((record: NotificationRecord) => {\n              this.emit('notification', record)\n            })\n\n            // If we're done, stop.\n            if (this.ending) {\n              response?.destroy()\n            }\n          })\n          .on('error', (e) => this.emit('error', e))\n          .on('end', () => {\n            // Do it again, if we haven't cancelled yet.\n            process.nextTick(() => {\n              this.checkForChanges()\n            })\n          })\n      },\n      (e) => {\n        return this.emit('error', e)\n      },\n    )\n  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