pip-services3-components-node
Version:
Component definitions for Pip.Services in Node.js
215 lines • 8.49 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ConnectionUtils = void 0;
/** @module connect */
/** @hidden */
const querystring = require('querystring');
const pip_services3_commons_node_1 = require("pip-services3-commons-node");
/**
* A set of utility functions to process connection parameters
*/
class ConnectionUtils {
/**
* Concatinates two options by combining duplicated properties into comma-separated list
* @param options1 first options to merge
* @param options2 second options to merge
* @param keys when define it limits only to specific keys
*/
static concat(options1, options2, ...keys) {
let options = pip_services3_commons_node_1.ConfigParams.fromValue(options1);
for (let key of options2.getKeys()) {
let value1 = options1.getAsString(key) || "";
let value2 = options2.getAsString(key) || "";
if (value1 != "" && value2 != "") {
if (keys == null || keys.length == 0 || keys.indexOf(key) >= 0) {
options.setAsObject(key, value1 + "," + value2);
}
}
else if (value1 != "") {
options.setAsObject(key, value1);
}
else if (value2 != "") {
options.setAsObject(key, value2);
}
}
return options;
}
static concatValues(value1, value2) {
if (value1 == null || value1 == "")
return value2;
if (value2 == null || value2 == "")
return value1;
return value1 + "," + value2;
}
/**
* Parses URI into config parameters.
* The URI shall be in the following form:
* protocol://username@password@host1:port1,host2:port2,...?param1=abc¶m2=xyz&...
*
* @param uri the URI to be parsed
* @param defaultProtocol a default protocol
* @param defaultPort a default port
* @returns a configuration parameters with URI elements
*/
static parseUri(uri, defaultProtocol, defaultPort) {
let options = new pip_services3_commons_node_1.ConfigParams();
if (uri == null || uri == "")
return options;
uri = uri.trim();
// Process parameters
let pos = uri.indexOf("?");
if (pos > 0) {
let params = uri.substring(pos + 1);
uri = uri.substring(0, pos);
let paramsList = params.split("&");
for (let param of paramsList) {
let pos = param.indexOf("=");
if (pos >= 0) {
let key = querystring.unescape(param.substring(0, pos));
let value = querystring.unescape(param.substring(pos + 1));
options.setAsObject(key, value);
}
else {
options.setAsObject(querystring.unescape(param), null);
}
}
}
// Process protocol
pos = uri.indexOf("://");
if (pos > 0) {
let protocol = uri.substring(0, pos);
uri = uri.substring(pos + 3);
options.setAsObject("protocol", protocol);
}
else {
options.setAsObject("protocol", defaultProtocol);
}
// Process user and password
pos = uri.indexOf("@");
if (pos > 0) {
let userAndPass = uri.substring(0, pos);
uri = uri.substring(pos + 1);
pos = userAndPass.indexOf(":");
if (pos > 0) {
options.setAsObject("username", userAndPass.substring(0, pos));
options.setAsObject("password", userAndPass.substring(pos + 1));
}
else {
options.setAsObject("username", userAndPass);
}
}
// Process host and ports
// options.setAsObject("servers", this.concatValues(options.getAsString("servers"), uri));
let servers = uri.split(",");
for (let server of servers) {
pos = server.indexOf(":");
if (pos > 0) {
options.setAsObject("servers", this.concatValues(options.getAsString("servers"), server));
options.setAsObject("host", this.concatValues(options.getAsString("host"), server.substring(0, pos)));
options.setAsObject("port", this.concatValues(options.getAsString("port"), server.substring(pos + 1)));
}
else {
options.setAsObject("servers", this.concatValues(options.getAsString("servers"), server + ":" + defaultPort.toString()));
options.setAsObject("host", this.concatValues(options.getAsString("host"), server));
options.setAsObject("port", this.concatValues(options.getAsString("port"), defaultPort.toString()));
}
}
return options;
}
/**
* Composes URI from config parameters.
* The result URI will be in the following form:
* protocol://username@password@host1:port1,host2:port2,...?param1=abc¶m2=xyz&...
*
* @param options configuration parameters
* @param defaultProtocol a default protocol
* @param defaultPort a default port
* @returns a composed URI
*/
static composeUri(options, defaultProtocol, defaultPort) {
let builder = "";
let protocol = options.getAsStringWithDefault("protocol", defaultProtocol);
if (protocol != null) {
builder = protocol + "://" + builder;
}
let username = options.getAsNullableString("username");
if (username != null) {
builder += username;
let password = options.getAsNullableString("password");
if (password != null) {
builder += ":" + password;
}
builder += "@";
}
let servers = "";
let defaultPortStr = defaultPort > 0 ? defaultPort.toString() : "";
let hosts = options.getAsStringWithDefault("host", "???").split(",");
let ports = options.getAsStringWithDefault("port", defaultPortStr).split(",");
for (let index = 0; index < hosts.length; index++) {
if (servers.length > 0) {
servers += ",";
}
let host = hosts[index];
servers += host;
let port = ports.length > index ? ports[index] : defaultPortStr;
port = port != "" ? port : defaultPortStr;
if (port != "") {
servers += ":" + port;
}
}
builder += servers;
let params = "";
let reservedKeys = ["protocol", "host", "port", "username", "password", "servers"];
for (let key of options.getKeys()) {
if (reservedKeys.indexOf(key) >= 0) {
continue;
}
if (params.length > 0) {
params += "&";
}
params += querystring.escape(key);
let value = options.getAsNullableString(key);
if (value != null && value != "") {
params += "=" + querystring.escape(value);
}
}
if (params.length > 0) {
builder += "?" + params;
}
return builder.toString();
}
/**
* Includes specified keys from the config parameters.
* @param options configuration parameters to be processed.
* @param keys a list of keys to be included.
* @returns a processed config parameters.
*/
static include(options, ...keys) {
if (keys == null || keys.length == 0)
return options;
let result = new pip_services3_commons_node_1.ConfigParams();
for (let key of options.getKeys()) {
if (keys.indexOf(key) >= 0) {
result.setAsObject(key, options.getAsString(key));
}
}
return result;
}
/**
* Excludes specified keys from the config parameters.
* @param options configuration parameters to be processed.
* @param keys a list of keys to be excluded.
* @returns a processed config parameters.
*/
static exclude(options, ...keys) {
if (keys == null || keys.length == 0)
return options;
let result = options.clone();
for (let key of keys) {
result.remove(key);
}
return result;
}
}
exports.ConnectionUtils = ConnectionUtils;
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