awscdk-construct-scte-scheduler
Version:
AWS CDK Construct for scheduling SCTE-35 events using the MediaLive schedule API
867 lines (849 loc) • 34.8 kB
JavaScript
'use strict';
var crc32 = require('@aws-crypto/crc32');
var serde = require('@smithy/core/serde');
class Int64 {
bytes;
constructor(bytes) {
this.bytes = bytes;
if (bytes.byteLength !== 8) {
throw new Error("Int64 buffers must be exactly 8 bytes");
}
}
static fromNumber(number) {
if (number > 9_223_372_036_854_775_807 || number < -9223372036854776e3) {
throw new Error(`${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) {
bytes[i] = remaining;
}
if (number < 0) {
negate(bytes);
}
return new Int64(bytes);
}
valueOf() {
const bytes = this.bytes.slice(0);
const negative = bytes[0] & 0b10000000;
if (negative) {
negate(bytes);
}
return parseInt(serde.toHex(bytes), 16) * (negative ? -1 : 1);
}
toString() {
return String(this.valueOf());
}
}
function negate(bytes) {
for (let i = 0; i < 8; i++) {
bytes[i] ^= 0xff;
}
for (let i = 7; i > -1; i--) {
bytes[i]++;
if (bytes[i] !== 0)
break;
}
}
class HeaderMarshaller {
toUtf8;
fromUtf8;
constructor(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]));
}
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;
}
return out;
}
formatHeaderValue(header) {
switch (header.type) {
case "boolean":
return Uint8Array.from([header.value ? 0 : 1]);
case "byte":
return Uint8Array.from([2, header.value]);
case "short":
const shortView = new DataView(new ArrayBuffer(3));
shortView.setUint8(0, 3);
shortView.setInt16(1, header.value, false);
return new Uint8Array(shortView.buffer);
case "integer":
const intView = new DataView(new ArrayBuffer(5));
intView.setUint8(0, 4);
intView.setInt32(1, header.value, false);
return new Uint8Array(intView.buffer);
case "long":
const longBytes = new Uint8Array(9);
longBytes[0] = 5;
longBytes.set(header.value.bytes, 1);
return longBytes;
case "binary":
const 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);
binBytes.set(header.value, 3);
return binBytes;
case "string":
const utf8Bytes = this.fromUtf8(header.value);
const strView = new DataView(new ArrayBuffer(3 + utf8Bytes.byteLength));
strView.setUint8(0, 7);
strView.setUint16(1, utf8Bytes.byteLength, false);
const strBytes = new Uint8Array(strView.buffer);
strBytes.set(utf8Bytes, 3);
return strBytes;
case "timestamp":
const tsBytes = new Uint8Array(9);
tsBytes[0] = 8;
tsBytes.set(Int64.fromNumber(header.value.valueOf()).bytes, 1);
return tsBytes;
case "uuid":
if (!UUID_PATTERN.test(header.value)) {
throw new Error(`Invalid UUID received: ${header.value}`);
}
const uuidBytes = new Uint8Array(17);
uuidBytes[0] = 9;
uuidBytes.set(serde.fromHex(header.value.replace(/\-/g, "")), 1);
return uuidBytes;
}
}
parse(headers) {
const out = {};
let position = 0;
while (position < headers.byteLength) {
const nameLength = headers.getUint8(position++);
const name = this.toUtf8(new Uint8Array(headers.buffer, headers.byteOffset + position, nameLength));
position += nameLength;
switch (headers.getUint8(position++)) {
case 0:
out[name] = {
type: BOOLEAN_TAG,
value: true,
};
break;
case 1:
out[name] = {
type: BOOLEAN_TAG,
value: false,
};
break;
case 2:
out[name] = {
type: BYTE_TAG,
value: headers.getInt8(position++),
};
break;
case 3:
out[name] = {
type: SHORT_TAG,
value: headers.getInt16(position, false),
};
position += 2;
break;
case 4:
out[name] = {
type: INT_TAG,
value: headers.getInt32(position, false),
};
position += 4;
break;
case 5:
out[name] = {
type: LONG_TAG,
value: new Int64(new Uint8Array(headers.buffer, headers.byteOffset + position, 8)),
};
position += 8;
break;
case 6:
const binaryLength = headers.getUint16(position, false);
position += 2;
out[name] = {
type: BINARY_TAG,
value: new Uint8Array(headers.buffer, headers.byteOffset + position, binaryLength),
};
position += binaryLength;
break;
case 7:
const stringLength = headers.getUint16(position, false);
position += 2;
out[name] = {
type: STRING_TAG,
value: this.toUtf8(new Uint8Array(headers.buffer, headers.byteOffset + position, stringLength)),
};
position += stringLength;
break;
case 8:
out[name] = {
type: TIMESTAMP_TAG,
value: new Date(new Int64(new Uint8Array(headers.buffer, headers.byteOffset + position, 8)).valueOf()),
};
position += 8;
break;
case 9:
const uuidBytes = new Uint8Array(headers.buffer, headers.byteOffset + position, 16);
position += 16;
out[name] = {
type: UUID_TAG,
value: `${serde.toHex(uuidBytes.subarray(0, 4))}-${serde.toHex(uuidBytes.subarray(4, 6))}-${serde.toHex(uuidBytes.subarray(6, 8))}-${serde.toHex(uuidBytes.subarray(8, 10))}-${serde.toHex(uuidBytes.subarray(10))}`,
};
break;
default:
throw new Error(`Unrecognized header type tag`);
}
}
return out;
}
}
var HEADER_VALUE_TYPE;
(function (HEADER_VALUE_TYPE) {
HEADER_VALUE_TYPE[HEADER_VALUE_TYPE["boolTrue"] = 0] = "boolTrue";
HEADER_VALUE_TYPE[HEADER_VALUE_TYPE["boolFalse"] = 1] = "boolFalse";
HEADER_VALUE_TYPE[HEADER_VALUE_TYPE["byte"] = 2] = "byte";
HEADER_VALUE_TYPE[HEADER_VALUE_TYPE["short"] = 3] = "short";
HEADER_VALUE_TYPE[HEADER_VALUE_TYPE["integer"] = 4] = "integer";
HEADER_VALUE_TYPE[HEADER_VALUE_TYPE["long"] = 5] = "long";
HEADER_VALUE_TYPE[HEADER_VALUE_TYPE["byteArray"] = 6] = "byteArray";
HEADER_VALUE_TYPE[HEADER_VALUE_TYPE["string"] = 7] = "string";
HEADER_VALUE_TYPE[HEADER_VALUE_TYPE["timestamp"] = 8] = "timestamp";
HEADER_VALUE_TYPE[HEADER_VALUE_TYPE["uuid"] = 9] = "uuid";
})(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}$/;
const PRELUDE_MEMBER_LENGTH = 4;
const PRELUDE_LENGTH = PRELUDE_MEMBER_LENGTH * 2;
const CHECKSUM_LENGTH = 4;
const MINIMUM_MESSAGE_LENGTH = PRELUDE_LENGTH + CHECKSUM_LENGTH * 2;
function splitMessage({ byteLength, byteOffset, buffer }) {
if (byteLength < MINIMUM_MESSAGE_LENGTH) {
throw new Error("Provided message too short to accommodate event stream message overhead");
}
const view = new DataView(buffer, byteOffset, byteLength);
const messageLength = view.getUint32(0, false);
if (byteLength !== messageLength) {
throw new Error("Reported message length does not match received message length");
}
const headerLength = view.getUint32(PRELUDE_MEMBER_LENGTH, false);
const expectedPreludeChecksum = view.getUint32(PRELUDE_LENGTH, false);
const expectedMessageChecksum = view.getUint32(byteLength - CHECKSUM_LENGTH, false);
const checksummer = new crc32.Crc32().update(new Uint8Array(buffer, byteOffset, PRELUDE_LENGTH));
if (expectedPreludeChecksum !== checksummer.digest()) {
throw new Error(`The prelude checksum specified in the message (${expectedPreludeChecksum}) does not match the calculated CRC32 checksum (${checksummer.digest()})`);
}
checksummer.update(new Uint8Array(buffer, byteOffset + PRELUDE_LENGTH, byteLength - (PRELUDE_LENGTH + CHECKSUM_LENGTH)));
if (expectedMessageChecksum !== checksummer.digest()) {
throw new Error(`The message checksum (${checksummer.digest()}) did not match the expected value of ${expectedMessageChecksum}`);
}
return {
headers: new DataView(buffer, byteOffset + PRELUDE_LENGTH + CHECKSUM_LENGTH, headerLength),
body: new Uint8Array(buffer, byteOffset + PRELUDE_LENGTH + CHECKSUM_LENGTH + headerLength, messageLength - headerLength - (PRELUDE_LENGTH + CHECKSUM_LENGTH + CHECKSUM_LENGTH)),
};
}
class EventStreamCodec {
headerMarshaller;
messageBuffer;
isEndOfStream;
constructor(toUtf8, fromUtf8) {
this.headerMarshaller = new HeaderMarshaller(toUtf8, fromUtf8);
this.messageBuffer = [];
this.isEndOfStream = false;
}
feed(message) {
this.messageBuffer.push(this.decode(message));
}
endOfStream() {
this.isEndOfStream = true;
}
getMessage() {
const message = this.messageBuffer.pop();
const isEndOfStream = this.isEndOfStream;
return {
getMessage() {
return message;
},
isEndOfStream() {
return isEndOfStream;
},
};
}
getAvailableMessages() {
const messages = this.messageBuffer;
this.messageBuffer = [];
const isEndOfStream = this.isEndOfStream;
return {
getMessages() {
return messages;
},
isEndOfStream() {
return isEndOfStream;
},
};
}
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.Crc32();
view.setUint32(0, length, false);
view.setUint32(4, headers.byteLength, false);
view.setUint32(8, checksum.update(out.subarray(0, 8)).digest(), false);
out.set(headers, 12);
out.set(body, headers.byteLength + 12);
view.setUint32(length - 4, checksum.update(out.subarray(8, length - 4)).digest(), false);
return out;
}
decode(message) {
const { headers, body } = splitMessage(message);
return { headers: this.headerMarshaller.parse(headers), body };
}
formatHeaders(rawHeaders) {
return this.headerMarshaller.format(rawHeaders);
}
}
class MessageDecoderStream {
options;
constructor(options) {
this.options = options;
}
[Symbol.asyncIterator]() {
return this.asyncIterator();
}
async *asyncIterator() {
for await (const bytes of this.options.inputStream) {
const decoded = this.options.decoder.decode(bytes);
yield decoded;
}
}
}
class MessageEncoderStream {
options;
constructor(options) {
this.options = options;
}
[Symbol.asyncIterator]() {
return this.asyncIterator();
}
async *asyncIterator() {
for await (const msg of this.options.messageStream) {
const encoded = this.options.encoder.encode(msg);
yield encoded;
}
if (this.options.includeEndFrame) {
yield new Uint8Array(0);
}
}
}
class SmithyMessageDecoderStream {
options;
constructor(options) {
this.options = options;
}
[Symbol.asyncIterator]() {
return this.asyncIterator();
}
async *asyncIterator() {
for await (const message of this.options.messageStream) {
const deserialized = await this.options.deserializer(message);
if (deserialized === undefined)
continue;
yield deserialized;
}
}
}
class SmithyMessageEncoderStream {
options;
constructor(options) {
this.options = options;
}
[Symbol.asyncIterator]() {
return this.asyncIterator();
}
async *asyncIterator() {
for await (const chunk of this.options.inputStream) {
const payloadBuf = this.options.serializer(chunk);
yield payloadBuf;
}
}
}
function getChunkedStream(source) {
let currentMessageTotalLength = 0;
let currentMessagePendingLength = 0;
let currentMessage = null;
let messageLengthBuffer = null;
const allocateMessage = (size) => {
if (typeof size !== "number") {
throw new Error("Attempted to allocate an event message where size was not a number: " + size);
}
currentMessageTotalLength = size;
currentMessagePendingLength = 4;
currentMessage = new Uint8Array(size);
const currentMessageView = new DataView(currentMessage.buffer);
currentMessageView.setUint32(0, size, false);
};
const iterator = async function* () {
const sourceIterator = source[Symbol.asyncIterator]();
while (true) {
const { value, done } = await sourceIterator.next();
if (done) {
if (!currentMessageTotalLength) {
return;
}
else if (currentMessageTotalLength === currentMessagePendingLength) {
yield currentMessage;
}
else {
throw new Error("Truncated event message received.");
}
return;
}
const chunkLength = value.length;
let currentOffset = 0;
while (currentOffset < chunkLength) {
if (!currentMessage) {
const bytesRemaining = chunkLength - currentOffset;
if (!messageLengthBuffer) {
messageLengthBuffer = new Uint8Array(4);
}
const numBytesForTotal = Math.min(4 - currentMessagePendingLength, bytesRemaining);
messageLengthBuffer.set(value.slice(currentOffset, currentOffset + numBytesForTotal), currentMessagePendingLength);
currentMessagePendingLength += numBytesForTotal;
currentOffset += numBytesForTotal;
if (currentMessagePendingLength < 4) {
break;
}
allocateMessage(new DataView(messageLengthBuffer.buffer).getUint32(0, false));
messageLengthBuffer = null;
}
const numBytesToWrite = Math.min(currentMessageTotalLength - currentMessagePendingLength, chunkLength - currentOffset);
currentMessage.set(value.slice(currentOffset, currentOffset + numBytesToWrite), currentMessagePendingLength);
currentMessagePendingLength += numBytesToWrite;
currentOffset += numBytesToWrite;
if (currentMessageTotalLength && currentMessageTotalLength === currentMessagePendingLength) {
yield currentMessage;
currentMessage = null;
currentMessageTotalLength = 0;
currentMessagePendingLength = 0;
}
}
}
};
return {
[Symbol.asyncIterator]: iterator,
};
}
function getUnmarshalledStream(source, options) {
const messageUnmarshaller = getMessageUnmarshaller(options.deserializer, options.toUtf8);
return {
[Symbol.asyncIterator]: async function* () {
for await (const chunk of source) {
const message = options.eventStreamCodec.decode(chunk);
const type = await messageUnmarshaller(message);
if (type === undefined)
continue;
yield type;
}
},
};
}
function getMessageUnmarshaller(deserializer, toUtf8) {
return async function (message) {
const { value: messageType } = message.headers[":message-type"];
if (messageType === "error") {
const unmodeledError = new Error(message.headers[":error-message"].value || "UnknownError");
unmodeledError.name = message.headers[":error-code"].value;
throw unmodeledError;
}
else if (messageType === "exception") {
const code = message.headers[":exception-type"].value;
const exception = { [code]: message };
const deserializedException = await deserializer(exception);
if (deserializedException.$unknown) {
const error = new Error(toUtf8(message.body));
error.name = code;
throw error;
}
throw deserializedException[code];
}
else if (messageType === "event") {
const event = {
[message.headers[":event-type"].value]: message,
};
const deserialized = await deserializer(event);
if (deserialized.$unknown)
return;
return deserialized;
}
else {
throw Error(`Unrecognizable event type: ${message.headers[":event-type"].value}`);
}
};
}
let EventStreamMarshaller$1 = class EventStreamMarshaller {
eventStreamCodec;
utfEncoder;
constructor({ utf8Encoder, utf8Decoder }) {
this.eventStreamCodec = new EventStreamCodec(utf8Encoder, utf8Decoder);
this.utfEncoder = utf8Encoder;
}
deserialize(body, deserializer) {
const inputStream = getChunkedStream(body);
return new SmithyMessageDecoderStream({
messageStream: new MessageDecoderStream({ inputStream, decoder: this.eventStreamCodec }),
deserializer: getMessageUnmarshaller(deserializer, this.utfEncoder),
});
}
serialize(inputStream, serializer) {
return new MessageEncoderStream({
messageStream: new SmithyMessageEncoderStream({ inputStream, serializer }),
encoder: this.eventStreamCodec,
includeEndFrame: true,
});
}
};
const eventStreamSerdeProvider$1 = (options) => new EventStreamMarshaller$1(options);
const readableStreamToIterable = (readableStream) => ({
[Symbol.asyncIterator]: async function* () {
const reader = readableStream.getReader();
try {
while (true) {
const { done, value } = await reader.read();
if (done)
return;
yield value;
}
}
finally {
reader.releaseLock();
}
},
});
const iterableToReadableStream = (asyncIterable) => {
const iterator = asyncIterable[Symbol.asyncIterator]();
return new ReadableStream({
async pull(controller) {
const { done, value } = await iterator.next();
if (done) {
return controller.close();
}
controller.enqueue(value);
},
});
};
class EventStreamMarshaller {
universalMarshaller;
constructor({ utf8Encoder, utf8Decoder }) {
this.universalMarshaller = new EventStreamMarshaller$1({
utf8Decoder,
utf8Encoder,
});
}
deserialize(body, deserializer) {
const bodyIterable = isReadableStream(body) ? readableStreamToIterable(body) : body;
return this.universalMarshaller.deserialize(bodyIterable, deserializer);
}
serialize(input, serializer) {
const serializedIterable = this.universalMarshaller.serialize(input, serializer);
return typeof ReadableStream === "function" ? iterableToReadableStream(serializedIterable) : serializedIterable;
}
}
const isReadableStream = (body) => typeof ReadableStream === "function" && body instanceof ReadableStream;
const eventStreamSerdeProvider = (options) => new EventStreamMarshaller(options);
const resolveEventStreamSerdeConfig = (input) => Object.assign(input, {
eventStreamMarshaller: input.eventStreamSerdeProvider(input),
});
class EventStreamSerde {
marshaller;
serializer;
deserializer;
serdeContext;
defaultContentType;
constructor({ marshaller, serializer, deserializer, serdeContext, defaultContentType, }) {
this.marshaller = marshaller;
this.serializer = serializer;
this.deserializer = deserializer;
this.serdeContext = serdeContext;
this.defaultContentType = defaultContentType;
}
async serializeEventStream({ eventStream, requestSchema, initialRequest, }) {
const marshaller = this.marshaller;
const eventStreamMember = requestSchema.getEventStreamMember();
const unionSchema = requestSchema.getMemberSchema(eventStreamMember);
const serializer = this.serializer;
const defaultContentType = this.defaultContentType;
const initialRequestMarker = Symbol("initialRequestMarker");
const eventStreamIterable = {
async *[Symbol.asyncIterator]() {
if (initialRequest) {
const headers = {
":event-type": { type: "string", value: "initial-request" },
":message-type": { type: "string", value: "event" },
":content-type": { type: "string", value: defaultContentType },
};
serializer.write(requestSchema, initialRequest);
const body = serializer.flush();
yield {
[initialRequestMarker]: true,
headers,
body,
};
}
for await (const page of eventStream) {
yield page;
}
},
};
return marshaller.serialize(eventStreamIterable, (event) => {
if (event[initialRequestMarker]) {
return {
headers: event.headers,
body: event.body,
};
}
let unionMember = "";
for (const key in event) {
if (key !== "__type") {
unionMember = key;
break;
}
}
const { additionalHeaders, body, eventType, explicitPayloadContentType } = this.writeEventBody(unionMember, unionSchema, event);
const headers = {
":event-type": { type: "string", value: eventType },
":message-type": { type: "string", value: "event" },
":content-type": { type: "string", value: explicitPayloadContentType ?? defaultContentType },
...additionalHeaders,
};
return {
headers,
body,
};
});
}
async deserializeEventStream({ response, responseSchema, initialResponseContainer, }) {
const marshaller = this.marshaller;
const eventStreamMember = responseSchema.getEventStreamMember();
const unionSchema = responseSchema.getMemberSchema(eventStreamMember);
const memberSchemas = unionSchema.getMemberSchemas();
const initialResponseMarker = Symbol("initialResponseMarker");
const asyncIterable = marshaller.deserialize(response.body, async (event) => {
let unionMember = "";
for (const key in event) {
if (key !== "__type") {
unionMember = key;
break;
}
}
const body = event[unionMember].body;
if (unionMember === "initial-response") {
const dataObject = await this.deserializer.read(responseSchema, body);
delete dataObject[eventStreamMember];
return {
[initialResponseMarker]: true,
...dataObject,
};
}
else if (unionMember in memberSchemas) {
const eventStreamSchema = memberSchemas[unionMember];
if (eventStreamSchema.isStructSchema()) {
const out = {};
let hasBindings = false;
for (const [name, member] of eventStreamSchema.structIterator()) {
const { eventHeader, eventPayload } = member.getMergedTraits();
hasBindings = hasBindings || Boolean(eventHeader || eventPayload);
if (eventPayload) {
if (member.isBlobSchema()) {
out[name] = body;
}
else if (member.isStringSchema()) {
out[name] = (this.serdeContext?.utf8Encoder ?? serde.toUtf8)(body);
}
else if (member.isStructSchema()) {
out[name] = await this.deserializer.read(member, body);
}
}
else if (eventHeader) {
const value = event[unionMember].headers[name]?.value;
if (value != null) {
if (member.isNumericSchema()) {
if (value && typeof value === "object" && "bytes" in value) {
out[name] = BigInt(value.toString());
}
else {
out[name] = Number(value);
}
}
else {
out[name] = value;
}
}
}
}
if (hasBindings) {
return {
[unionMember]: out,
};
}
if (body.byteLength === 0) {
return {
[unionMember]: {},
};
}
}
return {
[unionMember]: await this.deserializer.read(eventStreamSchema, body),
};
}
else {
return {
$unknown: event,
};
}
});
const asyncIterator = asyncIterable[Symbol.asyncIterator]();
const firstEvent = await asyncIterator.next();
if (firstEvent.done) {
return asyncIterable;
}
if (firstEvent.value?.[initialResponseMarker]) {
if (!responseSchema) {
throw new Error("@smithy::core/protocols - initial-response event encountered in event stream but no response schema given.");
}
for (const key in firstEvent.value) {
initialResponseContainer[key] = firstEvent.value[key];
}
}
return {
async *[Symbol.asyncIterator]() {
if (!firstEvent?.value?.[initialResponseMarker]) {
yield firstEvent.value;
}
while (true) {
const { done, value } = await asyncIterator.next();
if (done) {
break;
}
yield value;
}
},
};
}
writeEventBody(unionMember, unionSchema, event) {
const serializer = this.serializer;
let eventType = unionMember;
let explicitPayloadMember = null;
let explicitPayloadContentType;
const isKnownSchema = (() => {
const struct = unionSchema.getSchema();
return struct[4].includes(unionMember);
})();
const additionalHeaders = {};
if (!isKnownSchema) {
const [type, value] = event[unionMember];
eventType = type;
serializer.write(15, value);
}
else {
const eventSchema = unionSchema.getMemberSchema(unionMember);
if (eventSchema.isStructSchema()) {
for (const [memberName, memberSchema] of eventSchema.structIterator()) {
const { eventHeader, eventPayload } = memberSchema.getMergedTraits();
if (eventPayload) {
explicitPayloadMember = memberName;
}
else if (eventHeader) {
const value = event[unionMember][memberName];
let type = "binary";
if (memberSchema.isNumericSchema()) {
if ((-2) ** 31 <= value && value <= 2 ** 31 - 1) {
type = "integer";
}
else {
type = "long";
}
}
else if (memberSchema.isTimestampSchema()) {
type = "timestamp";
}
else if (memberSchema.isStringSchema()) {
type = "string";
}
else if (memberSchema.isBooleanSchema()) {
type = "boolean";
}
if (value != null) {
additionalHeaders[memberName] = {
type,
value,
};
delete event[unionMember][memberName];
}
}
}
if (explicitPayloadMember !== null) {
const payloadSchema = eventSchema.getMemberSchema(explicitPayloadMember);
if (payloadSchema.isBlobSchema()) {
explicitPayloadContentType = "application/octet-stream";
}
else if (payloadSchema.isStringSchema()) {
explicitPayloadContentType = "text/plain";
}
serializer.write(payloadSchema, event[unionMember][explicitPayloadMember]);
}
else {
serializer.write(eventSchema, event[unionMember]);
}
}
else if (eventSchema.isUnitSchema()) {
serializer.write(eventSchema, {});
}
else {
throw new Error("@smithy/core/event-streams - non-struct member not supported in event stream union.");
}
}
const messageSerialization = serializer.flush() ?? new Uint8Array();
const body = typeof messageSerialization === "string"
? (this.serdeContext?.utf8Decoder ?? serde.fromUtf8)(messageSerialization)
: messageSerialization;
return {
body,
eventType,
explicitPayloadContentType,
additionalHeaders,
};
}
}
exports.EventStreamCodec = EventStreamCodec;
exports.EventStreamMarshaller = EventStreamMarshaller;
exports.EventStreamSerde = EventStreamSerde;
exports.HeaderMarshaller = HeaderMarshaller;
exports.Int64 = Int64;
exports.MessageDecoderStream = MessageDecoderStream;
exports.MessageEncoderStream = MessageEncoderStream;
exports.SmithyMessageDecoderStream = SmithyMessageDecoderStream;
exports.SmithyMessageEncoderStream = SmithyMessageEncoderStream;
exports.UniversalEventStreamMarshaller = EventStreamMarshaller$1;
exports.eventStreamSerdeProvider = eventStreamSerdeProvider;
exports.getChunkedStream = getChunkedStream;
exports.getMessageUnmarshaller = getMessageUnmarshaller;
exports.getUnmarshalledStream = getUnmarshalledStream;
exports.iterableToReadableStream = iterableToReadableStream;
exports.readableStreamToIterable = readableStreamToIterable;
exports.resolveEventStreamSerdeConfig = resolveEventStreamSerdeConfig;
exports.universalEventStreamSerdeProvider = eventStreamSerdeProvider$1;