smartbucket/ts/smartbucket.classes.bucket.ts

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