@lightbend/akkaserverless-javascript-sdk
Version:
Akka Serverless JavaScript SDK
80 lines • 3.18 kB
JavaScript
;
/*
* Copyright 2021 Lightbend Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const AnySupport = require('./protobuf-any');
const util = require('util');
module.exports = class EffectSerializer {
constructor(allComponents) {
this.allComponents = allComponents;
}
serializeEffect(method, message, metadata) {
let serviceName, commandName;
// We support either the grpc method, or a protobufjs method being passed
if (typeof method.path === 'string') {
const r = new RegExp('^/([^/]+)/([^/]+)$').exec(method.path);
if (r == null) {
throw new Error(util.format("Not a valid gRPC method path '%s' on object '%o'", method.path, method));
}
serviceName = r[1];
commandName = r[2];
}
else if (method.type === 'rpc') {
serviceName = this.fullName(method.parent);
commandName = method.name;
}
const service = this.allComponents[serviceName];
if (service !== undefined) {
const command = service.methods[commandName];
if (command !== undefined) {
if (!command.resolvedRequestType) {
command.resolve();
}
const payload = AnySupport.serialize(command.resolvedRequestType.create(message), false, false);
const effect = {
serviceName: serviceName,
commandName: commandName,
payload: payload,
};
if (metadata && metadata.entries) {
effect.metadata = {
entries: metadata.entries,
};
}
return effect;
}
else {
throw new Error(util.format('Command [%s] unknown on service [%s].', commandName, serviceName));
}
}
else {
throw new Error(util.format("Service [%s] has not been registered as an entity in this user function, and so can't be used as a side effect or forward.", service));
}
}
fullName(item) {
if (item.parent && item.parent.name !== '') {
return this.fullName(item.parent) + '.' + item.name;
}
else {
return item.name;
}
}
serializeSideEffect(method, message, synchronous, metadata) {
const msg = this.serializeEffect(method, message, metadata);
msg.synchronous = typeof synchronous === 'boolean' ? synchronous : false;
return msg;
}
};
//# sourceMappingURL=effect-serializer.js.map