lambda-live-debugger
Version:
Debug Lambda functions locally like it is running in the cloud
137 lines (136 loc) • 5.75 kB
JavaScript
import { collectBody, RpcProtocol } from "@smithy/core/protocols";
import { deref, NormalizedSchema, TypeRegistry } from "@smithy/core/schema";
import { ProtocolLib } from "../ProtocolLib";
import { XmlShapeDeserializer } from "../xml/XmlShapeDeserializer";
import { QueryShapeSerializer } from "./QueryShapeSerializer";
export class AwsQueryProtocol extends RpcProtocol {
options;
serializer;
deserializer;
mixin = new ProtocolLib();
constructor(options) {
super({
defaultNamespace: options.defaultNamespace,
});
this.options = options;
const settings = {
timestampFormat: {
useTrait: true,
default: 5,
},
httpBindings: false,
xmlNamespace: options.xmlNamespace,
serviceNamespace: options.defaultNamespace,
serializeEmptyLists: true,
};
this.serializer = new QueryShapeSerializer(settings);
this.deserializer = new XmlShapeDeserializer(settings);
}
getShapeId() {
return "aws.protocols#awsQuery";
}
setSerdeContext(serdeContext) {
this.serializer.setSerdeContext(serdeContext);
this.deserializer.setSerdeContext(serdeContext);
}
getPayloadCodec() {
throw new Error("AWSQuery protocol has no payload codec.");
}
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-www-form-urlencoded`,
});
if (deref(operationSchema.input) === "unit" || !request.body) {
request.body = "";
}
const action = operationSchema.name.split("#")[1] ?? operationSchema.name;
request.body = `Action=${action}&Version=${this.options.version}` + request.body;
if (request.body.endsWith("&")) {
request.body = request.body.slice(-1);
}
return request;
}
async deserializeResponse(operationSchema, context, response) {
const deserializer = this.deserializer;
const ns = NormalizedSchema.of(operationSchema.output);
const dataObject = {};
if (response.statusCode >= 300) {
const bytes = await collectBody(response.body, context);
if (bytes.byteLength > 0) {
Object.assign(dataObject, await deserializer.read(15, bytes));
}
await this.handleError(operationSchema, context, response, dataObject, this.deserializeMetadata(response));
}
for (const header in response.headers) {
const value = response.headers[header];
delete response.headers[header];
response.headers[header.toLowerCase()] = value;
}
const shortName = operationSchema.name.split("#")[1] ?? operationSchema.name;
const awsQueryResultKey = ns.isStructSchema() && this.useNestedResult() ? shortName + "Result" : undefined;
const bytes = await collectBody(response.body, context);
if (bytes.byteLength > 0) {
Object.assign(dataObject, await deserializer.read(ns, bytes, awsQueryResultKey));
}
const output = {
$metadata: this.deserializeMetadata(response),
...dataObject,
};
return output;
}
useNestedResult() {
return true;
}
async handleError(operationSchema, context, response, dataObject, metadata) {
const errorIdentifier = this.loadQueryErrorCode(response, dataObject) ?? "Unknown";
const errorData = this.loadQueryError(dataObject) ?? {};
const message = this.loadQueryErrorMessage(dataObject);
errorData.message = message;
errorData.Error = {
Type: errorData.Type,
Code: errorData.Code,
Message: message,
};
const { errorSchema, errorMetadata } = await this.mixin.getErrorSchemaOrThrowBaseException(errorIdentifier, this.options.defaultNamespace, response, errorData, metadata, this.mixin.findQueryCompatibleError);
const ns = NormalizedSchema.of(errorSchema);
const ErrorCtor = TypeRegistry.for(errorSchema[1]).getErrorCtor(errorSchema) ?? Error;
const exception = new ErrorCtor(message);
const output = {
Type: errorData.Error.Type,
Code: errorData.Error.Code,
Error: errorData.Error,
};
for (const [name, member] of ns.structIterator()) {
const target = member.getMergedTraits().xmlName ?? name;
const value = errorData[target] ?? dataObject[target];
output[name] = this.deserializer.readSchema(member, value);
}
throw this.mixin.decorateServiceException(Object.assign(exception, errorMetadata, {
$fault: ns.getMergedTraits().error,
message,
}, output), dataObject);
}
loadQueryErrorCode(output, data) {
const code = (data.Errors?.[0]?.Error ?? data.Errors?.Error ?? data.Error)?.Code;
if (code !== undefined) {
return code;
}
if (output.statusCode == 404) {
return "NotFound";
}
}
loadQueryError(data) {
return data.Errors?.[0]?.Error ?? data.Errors?.Error ?? data.Error;
}
loadQueryErrorMessage(data) {
const errorData = this.loadQueryError(data);
return errorData?.message ?? errorData?.Message ?? data.message ?? data.Message ?? "Unknown";
}
getDefaultContentType() {
return "application/x-www-form-urlencoded";
}
}