lemon-engine
Version:
Lemon Engine Module to Synchronize Node over DynamoDB + ElastiCache + Elasticsearch by [lemoncloud](https://lemoncloud.io)
168 lines • 8.12 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var request_1 = __importDefault(require("request"));
var query_string_1 = __importDefault(require("query-string"));
var maker = function (_$, name, options) {
name = name || 'HS';
var $U = _$.U; // re-use global instance (utils).
var $_ = _$._; // re-use global instance (_ lodash).
if (!$U)
throw new Error('$U is required!');
if (!$_)
throw new Error('$_ is required!');
var NS = $U.NS(name, 'magenta'); // NAMESPACE TO BE PRINTED.
var ENDPOINT = options && (typeof options === 'string' ? options : options.endpoint || '') || ''; // service endpoint.
var HEADERS = options && (typeof options === 'object' ? options.headers : {}) || {}; // custom headers.
if (!ENDPOINT)
throw new Error('endpoint is required!');
//! load common functions
var _log = _$.log;
var _inf = _$.inf;
var _err = _$.err;
/** ****************************************************************************************************************
* Main Implementation.
** ****************************************************************************************************************/
//! request in local server.
var my_request_http = function (METHOD, TYPE, ID, CMD, $param, $body) {
if (!METHOD)
return Promise.reject(new Error(NS + ':METHOD is required!'));
if (!request_1.default)
throw new Error('request is required!');
//! prepare request parameters
var query_string = $param ? query_string_1.default.stringify($param) : '';
var url = ENDPOINT +
(TYPE === undefined ? '' : '/' + encodeURIComponent(TYPE)) +
(TYPE === undefined || ID === undefined ? '' : '/' + encodeURIComponent(ID)) +
(TYPE === undefined || ID === undefined || CMD === undefined ? '' : '/' + encodeURI(CMD)) + //NOTE - cmd could have additional '/' char.
(!query_string ? '' : '?' + query_string);
var request = request_1.default;
var options = {
method: METHOD || 'GET',
uri: url,
body: $body === null ? undefined : $body,
json: (typeof $body === 'string') ? false : true,
};
//! attache headers.
if (HEADERS && Object.keys(HEADERS).length > 0)
options.headers = HEADERS;
// _log(NS, ' url :=', options.method, url);
_log(NS, '*', options.method, url, options.json ? 'json' : 'plain');
// _inf(NS, '> options =', options);
// options.headers && _log(NS, '> headers =', options.headers);
//! returns promise
return new Promise(function (resolve, reject) {
//! start request..
request(options, function (error, response, body) {
error && _err(NS, '>>>>> requested! err=', error);
if (error)
return reject(error);
//! detecte trouble.
var statusCode = response.statusCode;
var statusMessage = response.statusMessage;
if (statusCode !== 200) {
//! handle for not-found.
if (statusCode === 400 || statusCode === 404) {
var msg = '' + body;
return reject(new Error(msg.indexOf('404 NOT FOUND') >= 0 ? msg : '404 NOT FOUND'));
}
_log(NS, '> code=' + statusCode + ', msg=' + statusMessage + ', body=', body);
// if (statusCode === 400 || statusCode === 404)
// return reject(new Error(body||statusMessage));
// else
// return reject(new Error(body||statusMessage));
body = body || statusMessage;
return reject(typeof body === 'string' ? new Error(body) : body);
}
//! try to parse body.
try {
if (body && typeof body == 'string' && body.startsWith('{') && body.endsWith('}')) {
body = JSON.parse(body);
}
else if (body && typeof body == 'string' && body.startsWith('[') && body.endsWith(']')) {
body = JSON.parse(body);
}
}
catch (e) {
_err(NS, '!WARN! parse =', e);
}
//! ok! successed.
resolve(body);
});
});
};
/**
* class: HttpProxyBody
*/
var HttpProxyBody = /** @class */ (function () {
function HttpProxyBody(endpoint) {
var _this = this;
this.name = function () { return "http-proxy:" + _this._endpoint; };
this.endpoint = function () { return _this._endpoint; };
this._endpoint = endpoint;
}
/**
* GET /:type/:id/:cmd?$param
*/
HttpProxyBody.prototype.do_get = function (TYPE, ID, CMD, $param, $body) {
if ($body)
return Promise.reject(new Error(NS + ':$body is invalid!'));
if (TYPE === undefined)
return Promise.reject(new Error(NS + ':TYPE is required!'));
// if (ID === undefined) return Promise.reject(new Error(NS + ':ID is required!'));
// if (CMD === undefined) return Promise.reject(new Error(NS + ':CMD is required!'));
return my_request_http('GET', TYPE, ID, CMD, $param, $body);
};
/**
* PUT /:type/:id/:cmd?$param
*/
HttpProxyBody.prototype.do_put = function (TYPE, ID, CMD, $param, $body) {
if (TYPE === undefined)
return Promise.reject(new Error(NS + ':TYPE is required!'));
if (ID === undefined)
return Promise.reject(new Error(NS + ':ID is required!'));
// if (CMD === undefined) return Promise.reject(new Error(NS + ':CMD is required!'));
return my_request_http('PUT', TYPE, ID, CMD, $param, $body);
};
/**
* POST /:type/:id/:cmd?$param
*/
HttpProxyBody.prototype.do_post = function (TYPE, ID, CMD, $param, $body) {
if (TYPE === undefined)
return Promise.reject(new Error(NS + ':TYPE is required!'));
if (ID === undefined)
return Promise.reject(new Error(NS + ':ID is required!'));
// if (CMD === undefined) return Promise.reject(new Error(NS + ':CMD is required!'));
return my_request_http('POST', TYPE, ID, CMD, $param, $body);
};
/**
* PATCH /:type/:id/:cmd?$param
*/
HttpProxyBody.prototype.do_patch = function (TYPE, ID, CMD, $param, $body) {
if (TYPE === undefined)
return Promise.reject(new Error(NS + ':TYPE is required!'));
if (ID === undefined)
return Promise.reject(new Error(NS + ':ID is required!'));
// if (CMD === undefined) return Promise.reject(new Error(NS + ':CMD is required!'));
return my_request_http('PATCH', TYPE, ID, CMD, $param, $body);
};
/**
* DELETE /:type/:id/:cmd?$param
*/
HttpProxyBody.prototype.do_delete = function (TYPE, ID, CMD, $param, $body) {
if (TYPE === undefined)
return Promise.reject(new Error(NS + ':TYPE is required!'));
if (ID === undefined)
return Promise.reject(new Error(NS + ':ID is required!'));
// if (CMD === undefined) return Promise.reject(new Error(NS + ':CMD is required!'));
return my_request_http('DELETE', TYPE, ID, CMD, $param, $body);
};
return HttpProxyBody;
}());
//! create & register service.
return _$(name, new HttpProxyBody(ENDPOINT));
};
exports.default = maker;
//# sourceMappingURL=http-proxy.js.map