awscdk-construct-scte-scheduler
Version:
AWS CDK Construct for scheduling SCTE-35 events using the MediaLive schedule API
119 lines (118 loc) • 5.06 kB
JavaScript
import { HttpBindingProtocol, HttpInterceptingShapeDeserializer, HttpInterceptingShapeSerializer, } from "@smithy/core/protocols";
import { NormalizedSchema, SCHEMA, TypeRegistry } from "@smithy/core/schema";
import { calculateBodyLength } from "@smithy/util-body-length-browser";
import { JsonCodec } from "./JsonCodec";
import { loadRestJsonErrorCode } from "./parseJsonBody";
export class AwsRestJsonProtocol extends HttpBindingProtocol {
serializer;
deserializer;
codec;
constructor({ defaultNamespace }) {
super({
defaultNamespace,
});
const settings = {
timestampFormat: {
useTrait: true,
default: SCHEMA.TIMESTAMP_EPOCH_SECONDS,
},
httpBindings: true,
jsonName: true,
};
this.codec = new JsonCodec(settings);
this.serializer = new HttpInterceptingShapeSerializer(this.codec.createSerializer(), settings);
this.deserializer = new HttpInterceptingShapeDeserializer(this.codec.createDeserializer(), settings);
}
getShapeId() {
return "aws.protocols#restJson1";
}
getPayloadCodec() {
return this.codec;
}
setSerdeContext(serdeContext) {
this.codec.setSerdeContext(serdeContext);
super.setSerdeContext(serdeContext);
}
async serializeRequest(operationSchema, input, context) {
const request = await super.serializeRequest(operationSchema, input, context);
const inputSchema = NormalizedSchema.of(operationSchema.input);
const members = inputSchema.getMemberSchemas();
if (!request.headers["content-type"]) {
const httpPayloadMember = Object.values(members).find((m) => {
return !!m.getMergedTraits().httpPayload;
});
if (httpPayloadMember) {
const mediaType = httpPayloadMember.getMergedTraits().mediaType;
if (mediaType) {
request.headers["content-type"] = mediaType;
}
else if (httpPayloadMember.isStringSchema()) {
request.headers["content-type"] = "text/plain";
}
else if (httpPayloadMember.isBlobSchema()) {
request.headers["content-type"] = "application/octet-stream";
}
else {
request.headers["content-type"] = "application/json";
}
}
else if (!inputSchema.isUnitSchema()) {
const hasBody = Object.values(members).find((m) => {
const { httpQuery, httpQueryParams, httpHeader, httpLabel, httpPrefixHeaders } = m.getMergedTraits();
return !httpQuery && !httpQueryParams && !httpHeader && !httpLabel && httpPrefixHeaders === void 0;
});
if (hasBody) {
request.headers["content-type"] = "application/json";
}
}
}
if (request.headers["content-type"] && !request.body) {
request.body = "{}";
}
if (request.body) {
try {
request.headers["content-length"] = String(calculateBodyLength(request.body));
}
catch (e) { }
}
return request;
}
async handleError(operationSchema, context, response, dataObject, metadata) {
const errorIdentifier = loadRestJsonErrorCode(response, dataObject) ?? "Unknown";
let namespace = this.options.defaultNamespace;
let errorName = errorIdentifier;
if (errorIdentifier.includes("#")) {
[namespace, errorName] = errorIdentifier.split("#");
}
const registry = TypeRegistry.for(namespace);
let errorSchema;
try {
errorSchema = registry.getSchema(errorIdentifier);
}
catch (e) {
const baseExceptionSchema = TypeRegistry.for("smithy.ts.sdk.synthetic." + namespace).getBaseException();
if (baseExceptionSchema) {
const ErrorCtor = baseExceptionSchema.ctor;
throw Object.assign(new ErrorCtor(errorName), dataObject);
}
throw new Error(errorName);
}
const ns = NormalizedSchema.of(errorSchema);
const message = dataObject.message ?? dataObject.Message ?? "Unknown";
const exception = new errorSchema.ctor(message);
await this.deserializeHttpMessage(errorSchema, context, response, dataObject);
const output = {};
for (const [name, member] of ns.structIterator()) {
const target = member.getMergedTraits().jsonName ?? name;
output[name] = this.codec.createDeserializer().readObject(member, dataObject[target]);
}
Object.assign(exception, {
$metadata: metadata,
$response: response,
$fault: ns.getMergedTraits().error,
message,
...output,
});
throw exception;
}
}