-
-
Notifications
You must be signed in to change notification settings - Fork 185
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
1 parent
a30b4b7
commit 02b1f3f
Showing
7 changed files
with
240 additions
and
31 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| const MAX_SHORT_STRING = require("./wasm-hash").MAX_SHORT_STRING; | ||
|
|
||
| class BatchedHash { | ||
| constructor(hash) { | ||
| this.string = undefined; | ||
| this.encoding = undefined; | ||
| this.hash = hash; | ||
| } | ||
|
|
||
| /** | ||
| * Update hash {@link https://nodejs.org/api/crypto.html#crypto_hash_update_data_inputencoding} | ||
| * @param {string|Buffer} data data | ||
| * @param {string=} inputEncoding data encoding | ||
| * @returns {this} updated hash | ||
| */ | ||
| update(data, inputEncoding) { | ||
| if (this.string !== undefined) { | ||
| if ( | ||
| typeof data === "string" && | ||
| inputEncoding === this.encoding && | ||
| this.string.length + data.length < MAX_SHORT_STRING | ||
| ) { | ||
| this.string += data; | ||
|
|
||
| return this; | ||
| } | ||
|
|
||
| this.hash.update(this.string, this.encoding); | ||
| this.string = undefined; | ||
| } | ||
|
|
||
| if (typeof data === "string") { | ||
| if ( | ||
| data.length < MAX_SHORT_STRING && | ||
| // base64 encoding is not valid since it may contain padding chars | ||
| (!inputEncoding || !inputEncoding.startsWith("ba")) | ||
| ) { | ||
| this.string = data; | ||
| this.encoding = inputEncoding; | ||
| } else { | ||
| this.hash.update(data, inputEncoding); | ||
| } | ||
| } else { | ||
| this.hash.update(data); | ||
| } | ||
|
|
||
| return this; | ||
| } | ||
|
|
||
| /** | ||
| * Calculates the digest {@link https://nodejs.org/api/crypto.html#crypto_hash_digest_encoding} | ||
| * @param {string=} encoding encoding of the return value | ||
| * @returns {string|Buffer} digest | ||
| */ | ||
| digest(encoding) { | ||
| if (this.string !== undefined) { | ||
| this.hash.update(this.string, this.encoding); | ||
| } | ||
|
|
||
| return this.hash.digest(encoding); | ||
| } | ||
| } | ||
|
|
||
| module.exports = BatchedHash; |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| const BULK_SIZE = 2000; | ||
|
|
||
| // We are using an object instead of a Map as this will stay static during the runtime | ||
| // so access to it can be optimized by v8 | ||
| const digestCaches = {}; | ||
|
|
||
| class BulkUpdateDecorator { | ||
| /** | ||
| * @param {Hash | function(): Hash} hashOrFactory function to create a hash | ||
| * @param {string=} hashKey key for caching | ||
| */ | ||
| constructor(hashOrFactory, hashKey) { | ||
| this.hashKey = hashKey; | ||
|
|
||
| if (typeof hashOrFactory === "function") { | ||
| this.hashFactory = hashOrFactory; | ||
| this.hash = undefined; | ||
| } else { | ||
| this.hashFactory = undefined; | ||
| this.hash = hashOrFactory; | ||
| } | ||
|
|
||
| this.buffer = ""; | ||
| } | ||
|
|
||
| /** | ||
| * Update hash {@link https://nodejs.org/api/crypto.html#crypto_hash_update_data_inputencoding} | ||
| * @param {string|Buffer} data data | ||
| * @param {string=} inputEncoding data encoding | ||
| * @returns {this} updated hash | ||
| */ | ||
| update(data, inputEncoding) { | ||
| if ( | ||
| inputEncoding !== undefined || | ||
| typeof data !== "string" || | ||
| data.length > BULK_SIZE | ||
| ) { | ||
| if (this.hash === undefined) { | ||
| this.hash = this.hashFactory(); | ||
| } | ||
|
|
||
| if (this.buffer.length > 0) { | ||
| this.hash.update(this.buffer); | ||
| this.buffer = ""; | ||
| } | ||
|
|
||
| this.hash.update(data, inputEncoding); | ||
| } else { | ||
| this.buffer += data; | ||
|
|
||
| if (this.buffer.length > BULK_SIZE) { | ||
| if (this.hash === undefined) { | ||
| this.hash = this.hashFactory(); | ||
| } | ||
|
|
||
| this.hash.update(this.buffer); | ||
| this.buffer = ""; | ||
| } | ||
| } | ||
|
|
||
| return this; | ||
| } | ||
|
|
||
| /** | ||
| * Calculates the digest {@link https://nodejs.org/api/crypto.html#crypto_hash_digest_encoding} | ||
| * @param {string=} encoding encoding of the return value | ||
| * @returns {string|Buffer} digest | ||
| */ | ||
| digest(encoding) { | ||
| let digestCache; | ||
|
|
||
| const buffer = this.buffer; | ||
|
|
||
| if (this.hash === undefined) { | ||
| // short data for hash, we can use caching | ||
| const cacheKey = `${this.hashKey}-${encoding}`; | ||
|
|
||
| digestCache = digestCaches[cacheKey]; | ||
|
|
||
| if (digestCache === undefined) { | ||
| digestCache = digestCaches[cacheKey] = new Map(); | ||
| } | ||
|
|
||
| const cacheEntry = digestCache.get(buffer); | ||
|
|
||
| if (cacheEntry !== undefined) { | ||
| return cacheEntry; | ||
| } | ||
|
|
||
| this.hash = this.hashFactory(); | ||
| } | ||
|
|
||
| if (buffer.length > 0) { | ||
| this.hash.update(buffer); | ||
| } | ||
|
|
||
| const digestResult = this.hash.digest(encoding); | ||
|
|
||
| if (digestCache !== undefined) { | ||
| digestCache.set(buffer, digestResult); | ||
| } | ||
|
|
||
| return digestResult; | ||
| } | ||
| } | ||
|
|
||
| module.exports = BulkUpdateDecorator; |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters