smartbucket/ts/smartbucket.classes.bucket.ts
2020-06-19 00:42:26 +00:00

119 lines
3.3 KiB
TypeScript

import * as plugins from './smartbucket.plugins';
import { SmartBucket } from './smartbucket.classes.smartbucket';
import { Directory } from './smartbucket.classes.directory';
import { Observable } from 'rxjs';
export class Bucket {
public static async getBucketByName(smartbucketRef: SmartBucket, bucketNameArg: string) {
const buckets = await smartbucketRef.minioClient.listBuckets();
const foundBucket = buckets.find(bucket => {
return bucket.name === bucketNameArg;
});
if (foundBucket) {
console.log(`bucket with name ${bucketNameArg} exists.`);
console.log(`Taking this as base for new Bucket instance`);
return new this(smartbucketRef, bucketNameArg);
} else {
return null;
}
}
public static async createBucketByName(smartbucketRef: SmartBucket, bucketName: string) {
await smartbucketRef.minioClient.makeBucket(bucketName, 'ams3').catch(e => console.log(e));
return new Bucket(smartbucketRef, bucketName);
}
public static async removeBucketByName(smartbucketRef: SmartBucket, bucketName: string) {
await smartbucketRef.minioClient.removeBucket(bucketName).catch(e => console.log(e));
}
public smartbucketRef: SmartBucket;
public name: string;
constructor(smartbucketRef: SmartBucket, bucketName: string) {
this.smartbucketRef = smartbucketRef;
this.name = bucketName;
}
/**
* gets the base directory of the bucket
*/
public async getBaseDirectory() {
return new Directory(this, null, '');
}
// ===============
// Fast Operations
// ===============
/**
* store file
*/
public async fastStore(pathArg: string, fileContent: string) {
const streamIntake = new plugins.streamfunction.Intake();
const putPromise = this.smartbucketRef.minioClient
.putObject(this.name, pathArg, streamIntake.getReadable())
.catch(e => console.log(e));
streamIntake.pushData(fileContent);
streamIntake.signalEnd();
await putPromise;
}
/**
* get file
*/
public async fastGet(pathArg: string) {
const done = plugins.smartpromise.defer();
let completeFile: Buffer;
const replaySubject = await this.fastGetStream(pathArg);
replaySubject.subscribe(
chunk => {
if (completeFile) {
completeFile = Buffer.concat([completeFile, chunk]);
}
},
err => {
console.log(err);
},
() => {
done.resolve();
}
);
await done.promise;
return completeFile;
}
public async fastGetStream(pathArg: string): Promise<plugins.smartrx.rxjs.ReplaySubject<Buffer>> {
const fileStream = await this.smartbucketRef.minioClient
.getObject(this.name, pathArg)
.catch(e => console.log(e));
const replaySubject = new plugins.smartrx.rxjs.ReplaySubject<Buffer>();
const duplexStream = plugins.streamfunction.createDuplexStream<Buffer, Buffer>(
async chunk => {
replaySubject.next(chunk);
return chunk;
},
async cb => {
console.log('stream ended');
replaySubject.complete();
return Buffer.from('');
}
);
if (!fileStream) {
return null;
}
fileStream.pipe(duplexStream);
return replaySubject;
}
/**
* removeObject
*/
public async fastRemove(pathArg: string) {
await this.smartbucketRef.minioClient.removeObject(this.name, pathArg);
}
}