bolt-protocol-v4x0.js•9.54 kB
"use strict";
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/**
* Copyright (c) "Neo4j"
* Neo4j Sweden AB [https://neo4j.com]
*
* 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.
*/
var bolt_protocol_v3_1 = __importDefault(require("./bolt-protocol-v3"));
var request_message_1 = __importDefault(require("./request-message"));
var bolt_protocol_util_1 = require("./bolt-protocol-util");
var stream_observers_1 = require("./stream-observers");
var bolt_protocol_v4x0_transformer_1 = __importDefault(require("./bolt-protocol-v4x0.transformer"));
var transformer_1 = __importDefault(require("./transformer"));
var neo4j_driver_core_1 = require("neo4j-driver-core");
var Bookmarks = neo4j_driver_core_1.internal.bookmarks.Bookmarks, _a = neo4j_driver_core_1.internal.constants, BOLT_PROTOCOL_V4_0 = _a.BOLT_PROTOCOL_V4_0, FETCH_ALL = _a.FETCH_ALL, TxConfig = neo4j_driver_core_1.internal.txConfig.TxConfig;
var CONTEXT = 'context';
var DATABASE = 'database';
var CALL_GET_ROUTING_TABLE_MULTI_DB = "CALL dbms.routing.getRoutingTable($".concat(CONTEXT, ", $").concat(DATABASE, ")");
var BoltProtocol = /** @class */ (function (_super) {
__extends(BoltProtocol, _super);
function BoltProtocol() {
return _super !== null && _super.apply(this, arguments) || this;
}
Object.defineProperty(BoltProtocol.prototype, "version", {
get: function () {
return BOLT_PROTOCOL_V4_0;
},
enumerable: false,
configurable: true
});
Object.defineProperty(BoltProtocol.prototype, "transformer", {
get: function () {
var _this = this;
if (this._transformer === undefined) {
this._transformer = new transformer_1.default(Object.values(bolt_protocol_v4x0_transformer_1.default).map(function (create) { return create(_this._config, _this._log); }));
}
return this._transformer;
},
enumerable: false,
configurable: true
});
BoltProtocol.prototype.beginTransaction = function (_a) {
var _b = _a === void 0 ? {} : _a, bookmarks = _b.bookmarks, txConfig = _b.txConfig, database = _b.database, impersonatedUser = _b.impersonatedUser, notificationFilter = _b.notificationFilter, mode = _b.mode, beforeError = _b.beforeError, afterError = _b.afterError, beforeComplete = _b.beforeComplete, afterComplete = _b.afterComplete;
var observer = new stream_observers_1.ResultStreamObserver({
server: this._server,
beforeError: beforeError,
afterError: afterError,
beforeComplete: beforeComplete,
afterComplete: afterComplete
});
observer.prepareToHandleSingleResponse();
// passing impersonated user on this protocol version throws an error
(0, bolt_protocol_util_1.assertImpersonatedUserIsEmpty)(impersonatedUser, this._onProtocolError, observer);
// passing notification filter on this protocol version throws an error
(0, bolt_protocol_util_1.assertNotificationFilterIsEmpty)(notificationFilter, this._onProtocolError, observer);
this.write(request_message_1.default.begin({ bookmarks: bookmarks, txConfig: txConfig, database: database, mode: mode }), observer, true);
return observer;
};
BoltProtocol.prototype.run = function (query, parameters, _a) {
var _b = _a === void 0 ? {} : _a, bookmarks = _b.bookmarks, txConfig = _b.txConfig, database = _b.database, impersonatedUser = _b.impersonatedUser, notificationFilter = _b.notificationFilter, mode = _b.mode, beforeKeys = _b.beforeKeys, afterKeys = _b.afterKeys, beforeError = _b.beforeError, afterError = _b.afterError, beforeComplete = _b.beforeComplete, afterComplete = _b.afterComplete, _c = _b.flush, flush = _c === void 0 ? true : _c, _d = _b.reactive, reactive = _d === void 0 ? false : _d, _e = _b.fetchSize, fetchSize = _e === void 0 ? FETCH_ALL : _e, _f = _b.highRecordWatermark, highRecordWatermark = _f === void 0 ? Number.MAX_VALUE : _f, _g = _b.lowRecordWatermark, lowRecordWatermark = _g === void 0 ? Number.MAX_VALUE : _g;
var observer = new stream_observers_1.ResultStreamObserver({
server: this._server,
reactive: reactive,
fetchSize: fetchSize,
moreFunction: this._requestMore.bind(this),
discardFunction: this._requestDiscard.bind(this),
beforeKeys: beforeKeys,
afterKeys: afterKeys,
beforeError: beforeError,
afterError: afterError,
beforeComplete: beforeComplete,
afterComplete: afterComplete,
highRecordWatermark: highRecordWatermark,
lowRecordWatermark: lowRecordWatermark
});
// passing impersonated user on this protocol version throws an error
(0, bolt_protocol_util_1.assertImpersonatedUserIsEmpty)(impersonatedUser, this._onProtocolError, observer);
// passing notification filter on this protocol version throws an error
(0, bolt_protocol_util_1.assertNotificationFilterIsEmpty)(notificationFilter, this._onProtocolError, observer);
var flushRun = reactive;
this.write(request_message_1.default.runWithMetadata(query, parameters, {
bookmarks: bookmarks,
txConfig: txConfig,
database: database,
mode: mode
}), observer, flushRun && flush);
if (!reactive) {
this.write(request_message_1.default.pull({ n: fetchSize }), observer, flush);
}
return observer;
};
BoltProtocol.prototype._requestMore = function (stmtId, n, observer) {
this.write(request_message_1.default.pull({ stmtId: stmtId, n: n }), observer, true);
};
BoltProtocol.prototype._requestDiscard = function (stmtId, observer) {
this.write(request_message_1.default.discard({ stmtId: stmtId }), observer, true);
};
BoltProtocol.prototype._noOp = function () { };
/**
* Request routing information
*
* @param {Object} param -
* @param {object} param.routingContext The routing context used to define the routing table.
* Multi-datacenter deployments is one of its use cases
* @param {string} param.databaseName The database name
* @param {Bookmarks} params.sessionContext.bookmarks The bookmarks used for requesting the routing table
* @param {string} params.sessionContext.mode The session mode
* @param {string} params.sessionContext.database The database name used on the session
* @param {function()} params.sessionContext.afterComplete The session param used after the session closed
* @param {function(err: Error)} param.onError
* @param {function(RawRoutingTable)} param.onCompleted
* @returns {RouteObserver} the route observer
*/
BoltProtocol.prototype.requestRoutingInformation = function (_a) {
var _b;
var _c = _a.routingContext, routingContext = _c === void 0 ? {} : _c, _d = _a.databaseName, databaseName = _d === void 0 ? null : _d, _e = _a.sessionContext, sessionContext = _e === void 0 ? {} : _e, onError = _a.onError, onCompleted = _a.onCompleted;
var resultObserver = this.run(CALL_GET_ROUTING_TABLE_MULTI_DB, (_b = {},
_b[CONTEXT] = routingContext,
_b[DATABASE] = databaseName,
_b), __assign(__assign({}, sessionContext), { txConfig: TxConfig.empty() }));
return new stream_observers_1.ProcedureRouteObserver({
resultObserver: resultObserver,
onProtocolError: this._onProtocolError,
onError: onError,
onCompleted: onCompleted
});
};
return BoltProtocol;
}(bolt_protocol_v3_1.default));
exports.default = BoltProtocol;