116 lines
3.1 KiB
JavaScript
116 lines
3.1 KiB
JavaScript
/*
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* fdb.js
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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"use strict";
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var KeySelector = require('./keySelector');
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var Cluster = require('./cluster');
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var future = require('./future');
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var Transactional = require('./retryDecorator');
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var tuple = require('./tuple');
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var buffer = require('./bufferConversion');
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var fdb = require('./fdbModule');
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var FDBError = require('./error');
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var locality = require('./locality');
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var directory = require('./directory');
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var Subspace = require('./subspace');
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var selectedApiVersion = require('./apiVersion');
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var fdbModule = {};
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module.exports = {
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FDBError: FDBError,
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apiVersion: function(version) {
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if(selectedApiVersion.value && version !== selectedApiVersion.value)
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throw new Error('Cannot select multiple different FDB API versions');
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if(version < 500)
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throw new RangeError('FDB API versions before 500 are not supported');
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if(version > 500)
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throw new RangeError('Latest known FDB API version is 500');
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if(!selectedApiVersion.value) {
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fdb.apiVersion(version);
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fdbModule.FDBError = this.FDBError;
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fdbModule.KeySelector = KeySelector;
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fdbModule.future = future;
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fdbModule.transactional = Transactional;
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fdbModule.tuple = tuple;
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fdbModule.buffer = buffer;
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fdbModule.locality = locality;
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fdbModule.directory = directory.directory;
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fdbModule.DirectoryLayer = directory.DirectoryLayer;
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fdbModule.Subspace = Subspace;
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fdbModule.options = fdb.options;
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fdbModule.streamingMode = fdb.streamingMode;
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var dbCache = {};
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var doInit = function() {
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fdb.startNetwork();
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process.on('exit', function() {
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//Clearing out the caches makes memory debugging a little easier
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dbCache = null;
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fdb.stopNetwork();
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});
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//Subsequent calls do nothing
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doInit = function() { };
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};
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fdbModule.init = function() {
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doInit();
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};
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fdbModule.createCluster = function(clusterFile, cb) {
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if(!clusterFile)
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clusterFile = '';
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return new Cluster(fdb.createCluster(clusterFile));
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};
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fdbModule.open = function(clusterFile, cb) {
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if(clusterFile)
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fdb.options.setClusterFile(clusterFile);
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this.init();
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var database = dbCache[clusterFile];
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if(!database) {
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var cluster = fdbModule.createCluster(clusterFile);
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database = cluster.openDatabase();
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dbCache[clusterFile] = database;
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}
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return database;
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};
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}
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selectedApiVersion.value = version;
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return fdbModule;
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}
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};
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fdb.FDBError = module.exports.FDBError;
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