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@aws-sdk/eventstream-codec

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Comparing version 3.183.0 to 3.186.0

8

CHANGELOG.md

@@ -6,2 +6,10 @@ # Change Log

# [3.186.0](https://github.com/aws/aws-sdk-js-v3/compare/v3.185.0...v3.186.0) (2022-10-06)
**Note:** Version bump only for package @aws-sdk/eventstream-codec
# [3.183.0](https://github.com/aws/aws-sdk-js-v3/compare/v3.182.0...v3.183.0) (2022-10-03)

@@ -8,0 +16,0 @@

35

dist-es/EventStreamCodec.js
import { Crc32 } from "@aws-crypto/crc32";
import { HeaderMarshaller } from "./HeaderMarshaller";
import { splitMessage } from "./splitMessage";
export class EventStreamCodec {
constructor(toUtf8, fromUtf8) {
var EventStreamCodec = (function () {
function EventStreamCodec(toUtf8, fromUtf8) {
this.headerMarshaller = new HeaderMarshaller(toUtf8, fromUtf8);
}
encode({ headers: rawHeaders, body }) {
const headers = this.headerMarshaller.format(rawHeaders);
const length = headers.byteLength + body.byteLength + 16;
const out = new Uint8Array(length);
const view = new DataView(out.buffer, out.byteOffset, out.byteLength);
const checksum = new Crc32();
EventStreamCodec.prototype.encode = function (_a) {
var rawHeaders = _a.headers, body = _a.body;
var headers = this.headerMarshaller.format(rawHeaders);
var length = headers.byteLength + body.byteLength + 16;
var out = new Uint8Array(length);
var view = new DataView(out.buffer, out.byteOffset, out.byteLength);
var checksum = new Crc32();
view.setUint32(0, length, false);

@@ -21,10 +22,12 @@ view.setUint32(4, headers.byteLength, false);

return out;
}
decode(message) {
const { headers, body } = splitMessage(message);
return { headers: this.headerMarshaller.parse(headers), body };
}
formatHeaders(rawHeaders) {
};
EventStreamCodec.prototype.decode = function (message) {
var _a = splitMessage(message), headers = _a.headers, body = _a.body;
return { headers: this.headerMarshaller.parse(headers), body: body };
};
EventStreamCodec.prototype.formatHeaders = function (rawHeaders) {
return this.headerMarshaller.format(rawHeaders);
}
}
};
return EventStreamCodec;
}());
export { EventStreamCodec };

140

dist-es/HeaderMarshaller.js

@@ -0,23 +1,45 @@

import { __values } from "tslib";
import { fromHex, toHex } from "@aws-sdk/util-hex-encoding";
import { Int64 } from "./Int64";
export class HeaderMarshaller {
constructor(toUtf8, fromUtf8) {
var HeaderMarshaller = (function () {
function HeaderMarshaller(toUtf8, fromUtf8) {
this.toUtf8 = toUtf8;
this.fromUtf8 = fromUtf8;
}
format(headers) {
const chunks = [];
for (const headerName of Object.keys(headers)) {
const bytes = this.fromUtf8(headerName);
chunks.push(Uint8Array.from([bytes.byteLength]), bytes, this.formatHeaderValue(headers[headerName]));
HeaderMarshaller.prototype.format = function (headers) {
var e_1, _a, e_2, _b;
var chunks = [];
try {
for (var _c = __values(Object.keys(headers)), _d = _c.next(); !_d.done; _d = _c.next()) {
var headerName = _d.value;
var bytes = this.fromUtf8(headerName);
chunks.push(Uint8Array.from([bytes.byteLength]), bytes, this.formatHeaderValue(headers[headerName]));
}
}
const out = new Uint8Array(chunks.reduce((carry, bytes) => carry + bytes.byteLength, 0));
let position = 0;
for (const chunk of chunks) {
out.set(chunk, position);
position += chunk.byteLength;
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (_d && !_d.done && (_a = _c.return)) _a.call(_c);
}
finally { if (e_1) throw e_1.error; }
}
var out = new Uint8Array(chunks.reduce(function (carry, bytes) { return carry + bytes.byteLength; }, 0));
var position = 0;
try {
for (var chunks_1 = __values(chunks), chunks_1_1 = chunks_1.next(); !chunks_1_1.done; chunks_1_1 = chunks_1.next()) {
var chunk = chunks_1_1.value;
out.set(chunk, position);
position += chunk.byteLength;
}
}
catch (e_2_1) { e_2 = { error: e_2_1 }; }
finally {
try {
if (chunks_1_1 && !chunks_1_1.done && (_b = chunks_1.return)) _b.call(chunks_1);
}
finally { if (e_2) throw e_2.error; }
}
return out;
}
formatHeaderValue(header) {
};
HeaderMarshaller.prototype.formatHeaderValue = function (header) {
switch (header.type) {

@@ -29,3 +51,3 @@ case "boolean":

case "short":
const shortView = new DataView(new ArrayBuffer(3));
var shortView = new DataView(new ArrayBuffer(3));
shortView.setUint8(0, 3);

@@ -35,3 +57,3 @@ shortView.setInt16(1, header.value, false);

case "integer":
const intView = new DataView(new ArrayBuffer(5));
var intView = new DataView(new ArrayBuffer(5));
intView.setUint8(0, 4);

@@ -41,3 +63,3 @@ intView.setInt32(1, header.value, false);

case "long":
const longBytes = new Uint8Array(9);
var longBytes = new Uint8Array(9);
longBytes[0] = 5;

@@ -47,18 +69,18 @@ longBytes.set(header.value.bytes, 1);

case "binary":
const binView = new DataView(new ArrayBuffer(3 + header.value.byteLength));
var binView = new DataView(new ArrayBuffer(3 + header.value.byteLength));
binView.setUint8(0, 6);
binView.setUint16(1, header.value.byteLength, false);
const binBytes = new Uint8Array(binView.buffer);
var binBytes = new Uint8Array(binView.buffer);
binBytes.set(header.value, 3);
return binBytes;
case "string":
const utf8Bytes = this.fromUtf8(header.value);
const strView = new DataView(new ArrayBuffer(3 + utf8Bytes.byteLength));
var utf8Bytes = this.fromUtf8(header.value);
var strView = new DataView(new ArrayBuffer(3 + utf8Bytes.byteLength));
strView.setUint8(0, 7);
strView.setUint16(1, utf8Bytes.byteLength, false);
const strBytes = new Uint8Array(strView.buffer);
var strBytes = new Uint8Array(strView.buffer);
strBytes.set(utf8Bytes, 3);
return strBytes;
case "timestamp":
const tsBytes = new Uint8Array(9);
var tsBytes = new Uint8Array(9);
tsBytes[0] = 8;

@@ -69,5 +91,5 @@ tsBytes.set(Int64.fromNumber(header.value.valueOf()).bytes, 1);

if (!UUID_PATTERN.test(header.value)) {
throw new Error(`Invalid UUID received: ${header.value}`);
throw new Error("Invalid UUID received: ".concat(header.value));
}
const uuidBytes = new Uint8Array(17);
var uuidBytes = new Uint8Array(17);
uuidBytes[0] = 9;

@@ -77,13 +99,13 @@ uuidBytes.set(fromHex(header.value.replace(/\-/g, "")), 1);

}
}
parse(headers) {
const out = {};
let position = 0;
};
HeaderMarshaller.prototype.parse = function (headers) {
var out = {};
var position = 0;
while (position < headers.byteLength) {
const nameLength = headers.getUint8(position++);
const name = this.toUtf8(new Uint8Array(headers.buffer, headers.byteOffset + position, nameLength));
var nameLength = headers.getUint8(position++);
var name_1 = this.toUtf8(new Uint8Array(headers.buffer, headers.byteOffset + position, nameLength));
position += nameLength;
switch (headers.getUint8(position++)) {
case 0:
out[name] = {
out[name_1] = {
type: BOOLEAN_TAG,

@@ -94,3 +116,3 @@ value: true,

case 1:
out[name] = {
out[name_1] = {
type: BOOLEAN_TAG,

@@ -101,3 +123,3 @@ value: false,

case 2:
out[name] = {
out[name_1] = {
type: BYTE_TAG,

@@ -108,3 +130,3 @@ value: headers.getInt8(position++),

case 3:
out[name] = {
out[name_1] = {
type: SHORT_TAG,

@@ -116,3 +138,3 @@ value: headers.getInt16(position, false),

case 4:
out[name] = {
out[name_1] = {
type: INT_TAG,

@@ -124,3 +146,3 @@ value: headers.getInt32(position, false),

case 5:
out[name] = {
out[name_1] = {
type: LONG_TAG,

@@ -132,5 +154,5 @@ value: new Int64(new Uint8Array(headers.buffer, headers.byteOffset + position, 8)),

case 6:
const binaryLength = headers.getUint16(position, false);
var binaryLength = headers.getUint16(position, false);
position += 2;
out[name] = {
out[name_1] = {
type: BINARY_TAG,

@@ -142,5 +164,5 @@ value: new Uint8Array(headers.buffer, headers.byteOffset + position, binaryLength),

case 7:
const stringLength = headers.getUint16(position, false);
var stringLength = headers.getUint16(position, false);
position += 2;
out[name] = {
out[name_1] = {
type: STRING_TAG,

@@ -152,3 +174,3 @@ value: this.toUtf8(new Uint8Array(headers.buffer, headers.byteOffset + position, stringLength)),

case 8:
out[name] = {
out[name_1] = {
type: TIMESTAMP_TAG,

@@ -160,16 +182,18 @@ value: new Date(new Int64(new Uint8Array(headers.buffer, headers.byteOffset + position, 8)).valueOf()),

case 9:
const uuidBytes = new Uint8Array(headers.buffer, headers.byteOffset + position, 16);
var uuidBytes = new Uint8Array(headers.buffer, headers.byteOffset + position, 16);
position += 16;
out[name] = {
out[name_1] = {
type: UUID_TAG,
value: `${toHex(uuidBytes.subarray(0, 4))}-${toHex(uuidBytes.subarray(4, 6))}-${toHex(uuidBytes.subarray(6, 8))}-${toHex(uuidBytes.subarray(8, 10))}-${toHex(uuidBytes.subarray(10))}`,
value: "".concat(toHex(uuidBytes.subarray(0, 4)), "-").concat(toHex(uuidBytes.subarray(4, 6)), "-").concat(toHex(uuidBytes.subarray(6, 8)), "-").concat(toHex(uuidBytes.subarray(8, 10)), "-").concat(toHex(uuidBytes.subarray(10))),
};
break;
default:
throw new Error(`Unrecognized header type tag`);
throw new Error("Unrecognized header type tag");
}
}
return out;
}
}
};
return HeaderMarshaller;
}());
export { HeaderMarshaller };
var HEADER_VALUE_TYPE;

@@ -188,11 +212,11 @@ (function (HEADER_VALUE_TYPE) {

})(HEADER_VALUE_TYPE || (HEADER_VALUE_TYPE = {}));
const BOOLEAN_TAG = "boolean";
const BYTE_TAG = "byte";
const SHORT_TAG = "short";
const INT_TAG = "integer";
const LONG_TAG = "long";
const BINARY_TAG = "binary";
const STRING_TAG = "string";
const TIMESTAMP_TAG = "timestamp";
const UUID_TAG = "uuid";
const UUID_PATTERN = /^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/;
var BOOLEAN_TAG = "boolean";
var BYTE_TAG = "byte";
var SHORT_TAG = "short";
var INT_TAG = "integer";
var LONG_TAG = "long";
var BINARY_TAG = "binary";
var STRING_TAG = "string";
var TIMESTAMP_TAG = "timestamp";
var UUID_TAG = "uuid";
var UUID_PATTERN = /^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/;

34

dist-es/Int64.js
import { toHex } from "@aws-sdk/util-hex-encoding";
export class Int64 {
constructor(bytes) {
var Int64 = (function () {
function Int64(bytes) {
this.bytes = bytes;

@@ -9,8 +9,8 @@ if (bytes.byteLength !== 8) {

}
static fromNumber(number) {
Int64.fromNumber = function (number) {
if (number > 9223372036854776000 || number < -9223372036854776000) {
throw new Error(`${number} is too large (or, if negative, too small) to represent as an Int64`);
throw new Error("".concat(number, " is too large (or, if negative, too small) to represent as an Int64"));
}
const bytes = new Uint8Array(8);
for (let i = 7, remaining = Math.abs(Math.round(number)); i > -1 && remaining > 0; i--, remaining /= 256) {
var bytes = new Uint8Array(8);
for (var i = 7, remaining = Math.abs(Math.round(number)); i > -1 && remaining > 0; i--, remaining /= 256) {
bytes[i] = remaining;

@@ -22,6 +22,6 @@ }

return new Int64(bytes);
}
valueOf() {
const bytes = this.bytes.slice(0);
const negative = bytes[0] & 0b10000000;
};
Int64.prototype.valueOf = function () {
var bytes = this.bytes.slice(0);
var negative = bytes[0] & 128;
if (negative) {

@@ -31,12 +31,14 @@ negate(bytes);

return parseInt(toHex(bytes), 16) * (negative ? -1 : 1);
}
toString() {
};
Int64.prototype.toString = function () {
return String(this.valueOf());
}
}
};
return Int64;
}());
export { Int64 };
function negate(bytes) {
for (let i = 0; i < 8; i++) {
for (var i = 0; i < 8; i++) {
bytes[i] ^= 0xff;
}
for (let i = 7; i > -1; i--) {
for (var i = 7; i > -1; i--) {
bytes[i]++;

@@ -43,0 +45,0 @@ if (bytes[i] !== 0)

27

dist-es/splitMessage.js
import { Crc32 } from "@aws-crypto/crc32";
const PRELUDE_MEMBER_LENGTH = 4;
const PRELUDE_LENGTH = PRELUDE_MEMBER_LENGTH * 2;
const CHECKSUM_LENGTH = 4;
const MINIMUM_MESSAGE_LENGTH = PRELUDE_LENGTH + CHECKSUM_LENGTH * 2;
export function splitMessage({ byteLength, byteOffset, buffer }) {
var PRELUDE_MEMBER_LENGTH = 4;
var PRELUDE_LENGTH = PRELUDE_MEMBER_LENGTH * 2;
var CHECKSUM_LENGTH = 4;
var MINIMUM_MESSAGE_LENGTH = PRELUDE_LENGTH + CHECKSUM_LENGTH * 2;
export function splitMessage(_a) {
var byteLength = _a.byteLength, byteOffset = _a.byteOffset, buffer = _a.buffer;
if (byteLength < MINIMUM_MESSAGE_LENGTH) {
throw new Error("Provided message too short to accommodate event stream message overhead");
}
const view = new DataView(buffer, byteOffset, byteLength);
const messageLength = view.getUint32(0, false);
var view = new DataView(buffer, byteOffset, byteLength);
var messageLength = view.getUint32(0, false);
if (byteLength !== messageLength) {
throw new Error("Reported message length does not match received message length");
}
const headerLength = view.getUint32(PRELUDE_MEMBER_LENGTH, false);
const expectedPreludeChecksum = view.getUint32(PRELUDE_LENGTH, false);
const expectedMessageChecksum = view.getUint32(byteLength - CHECKSUM_LENGTH, false);
const checksummer = new Crc32().update(new Uint8Array(buffer, byteOffset, PRELUDE_LENGTH));
var headerLength = view.getUint32(PRELUDE_MEMBER_LENGTH, false);
var expectedPreludeChecksum = view.getUint32(PRELUDE_LENGTH, false);
var expectedMessageChecksum = view.getUint32(byteLength - CHECKSUM_LENGTH, false);
var checksummer = new Crc32().update(new Uint8Array(buffer, byteOffset, PRELUDE_LENGTH));
if (expectedPreludeChecksum !== checksummer.digest()) {
throw new Error(`The prelude checksum specified in the message (${expectedPreludeChecksum}) does not match the calculated CRC32 checksum (${checksummer.digest()})`);
throw new Error("The prelude checksum specified in the message (".concat(expectedPreludeChecksum, ") does not match the calculated CRC32 checksum (").concat(checksummer.digest(), ")"));
}
checksummer.update(new Uint8Array(buffer, byteOffset + PRELUDE_LENGTH, byteLength - (PRELUDE_LENGTH + CHECKSUM_LENGTH)));
if (expectedMessageChecksum !== checksummer.digest()) {
throw new Error(`The message checksum (${checksummer.digest()}) did not match the expected value of ${expectedMessageChecksum}`);
throw new Error("The message checksum (".concat(checksummer.digest(), ") did not match the expected value of ").concat(expectedMessageChecksum));
}

@@ -26,0 +27,0 @@ return {

2

dist-es/TestVectors.fixture.js
import { Int64 } from "./Int64";
export const vectors = {
export var vectors = {
all_headers: {

@@ -4,0 +4,0 @@ expectation: "success",

10

package.json
{
"name": "@aws-sdk/eventstream-codec",
"version": "3.183.0",
"version": "3.186.0",
"scripts": {

@@ -24,9 +24,9 @@ "build": "concurrently 'yarn:build:cjs' 'yarn:build:es' 'yarn:build:types'",

"@aws-crypto/crc32": "2.0.0",
"@aws-sdk/types": "3.183.0",
"@aws-sdk/util-hex-encoding": "3.183.0",
"@aws-sdk/types": "3.186.0",
"@aws-sdk/util-hex-encoding": "3.186.0",
"tslib": "^2.3.1"
},
"devDependencies": {
"@aws-sdk/util-utf8-browser": "3.183.0",
"@aws-sdk/util-utf8-node": "3.183.0",
"@aws-sdk/util-utf8-browser": "3.186.0",
"@aws-sdk/util-utf8-node": "3.186.0",
"@tsconfig/recommended": "1.0.1",

@@ -33,0 +33,0 @@ "@types/node": "^10.0.0",

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