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/*
* Copyright 2021 gRPC authors.
*
* 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.
*
*/
import { isIP } from 'net';
export interface TcpSubchannelAddress {
port: number;
host: string;
}
export interface IpcSubchannelAddress {
path: string;
}
/**
* This represents a single backend address to connect to. This interface is a
* subset of net.SocketConnectOpts, i.e. the options described at
* https://nodejs.org/api/net.html#net_socket_connect_options_connectlistener.
* Those are in turn a subset of the options that can be passed to http2.connect.
*/
export type SubchannelAddress = TcpSubchannelAddress | IpcSubchannelAddress;
export function isTcpSubchannelAddress(
address: SubchannelAddress
): address is TcpSubchannelAddress {
return 'port' in address;
}
export function subchannelAddressEqual(
address1?: SubchannelAddress,
address2?: SubchannelAddress
): boolean {
if (!address1 && !address2) {
return true;
}
if (!address1 || !address2) {
return false;
}
if (isTcpSubchannelAddress(address1)) {
return (
isTcpSubchannelAddress(address2) &&
address1.host === address2.host &&
address1.port === address2.port
);
} else {
return !isTcpSubchannelAddress(address2) && address1.path === address2.path;
}
}
export function subchannelAddressToString(address: SubchannelAddress): string {
if (isTcpSubchannelAddress(address)) {
return address.host + ':' + address.port;
} else {
return address.path;
}
}
const DEFAULT_PORT = 443;
export function stringToSubchannelAddress(
addressString: string,
port?: number
): SubchannelAddress {
if (isIP(addressString)) {
return {
host: addressString,
port: port ?? DEFAULT_PORT,
};
} else {
return {
path: addressString,
};
}
}
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