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s3-handler.ts
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// Copyright (c) 2018, Compiler Explorer Authors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
import {NoSuchKey, S3} from '@aws-sdk/client-s3';
import type {GetResult} from '../types/cache.interfaces.js';
import {awsCredentials} from './aws.js';
import type {S3HandlerOptions} from './s3-handler.interfaces.js';
const clientsByRegion: Map<string, S3> = new Map();
export class S3Bucket {
private readonly instance: S3;
readonly bucket: string;
readonly region: string;
constructor(bucket: string, region: string) {
const maybeInstance = clientsByRegion.get(region);
if (maybeInstance) {
this.instance = maybeInstance;
} else {
this.instance = new S3({region, credentials: awsCredentials()});
clientsByRegion.set(region, this.instance);
}
this.bucket = bucket;
this.region = region;
}
async get(key: string, path: string): Promise<GetResult> {
try {
const result = await this.instance.getObject({Bucket: this.bucket, Key: `${path}/${key}`});
if (!result.Body) return {hit: false};
return {hit: true, data: Buffer.from(await result.Body.transformToByteArray())};
} catch (x: any) {
if (x instanceof NoSuchKey) return {hit: false};
throw x;
}
}
// Unused?
async delete(key: string, path: string): Promise<boolean> {
try {
await this.instance.deleteObject({Bucket: this.bucket, Key: `${path}/${key}`});
} catch (x: any) {
if (x instanceof NoSuchKey) return false;
throw x;
}
return true;
}
async put(key: string, value: Buffer, path: string, options: S3HandlerOptions): Promise<void> {
await this.instance.putObject({
Bucket: this.bucket,
Key: `${path}/${key}`,
Body: value,
StorageClass: options.redundancy || 'STANDARD',
Metadata: options.metadata || {},
});
}
}