cdk-iot-greengrass-fleet-provisioning
Version:
CDK Construct for AWS IoT Greengrass Fleet Provisioning (with AWS IoT Certificates)
76 lines (75 loc) • 3.14 kB
JavaScript
import { RpcProtocol } from "@smithy/core/protocols";
import { deref, NormalizedSchema, SCHEMA } from "@smithy/core/schema";
import { ProtocolLib } from "../ProtocolLib";
import { JsonCodec } from "./JsonCodec";
import { loadRestJsonErrorCode } from "./parseJsonBody";
export class AwsJsonRpcProtocol extends RpcProtocol {
serializer;
deserializer;
serviceTarget;
codec;
mixin = new ProtocolLib();
awsQueryCompatible;
constructor({ defaultNamespace, serviceTarget, awsQueryCompatible, }) {
super({
defaultNamespace,
});
this.serviceTarget = serviceTarget;
this.codec = new JsonCodec({
timestampFormat: {
useTrait: true,
default: SCHEMA.TIMESTAMP_EPOCH_SECONDS,
},
jsonName: false,
});
this.serializer = this.codec.createSerializer();
this.deserializer = this.codec.createDeserializer();
this.awsQueryCompatible = !!awsQueryCompatible;
}
async serializeRequest(operationSchema, input, context) {
const request = await super.serializeRequest(operationSchema, input, context);
if (!request.path.endsWith("/")) {
request.path += "/";
}
Object.assign(request.headers, {
"content-type": `application/x-amz-json-${this.getJsonRpcVersion()}`,
"x-amz-target": `${this.serviceTarget}.${NormalizedSchema.of(operationSchema).getName()}`,
});
if (this.awsQueryCompatible) {
request.headers["x-amzn-query-mode"] = "true";
}
if (deref(operationSchema.input) === "unit" || !request.body) {
request.body = "{}";
}
try {
request.headers["content-length"] = this.mixin.calculateContentLength(request.body, this.serdeContext);
}
catch (e) { }
return request;
}
getPayloadCodec() {
return this.codec;
}
async handleError(operationSchema, context, response, dataObject, metadata) {
if (this.awsQueryCompatible) {
this.mixin.setQueryCompatError(dataObject, response);
}
const errorIdentifier = loadRestJsonErrorCode(response, dataObject) ?? "Unknown";
const { errorSchema, errorMetadata } = await this.mixin.getErrorSchemaOrThrowBaseException(errorIdentifier, this.options.defaultNamespace, response, dataObject, metadata);
const ns = NormalizedSchema.of(errorSchema);
const message = dataObject.message ?? dataObject.Message ?? "Unknown";
const exception = new errorSchema.ctor(message);
const output = {};
for (const [name, member] of ns.structIterator()) {
const target = member.getMergedTraits().jsonName ?? name;
output[name] = this.codec.createDeserializer().readObject(member, dataObject[target]);
}
if (this.awsQueryCompatible) {
this.mixin.queryCompatOutput(dataObject, output);
}
throw Object.assign(exception, errorMetadata, {
$fault: ns.getMergedTraits().error,
message,
}, output);
}
}