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Iif (!semver.satisfies(process.version, '>=6.0.0')) {
require('babel-polyfill');
}
const Promise = require('bluebird');
const _ = require('lodash');
const path = require('path');
let dseDriver;
try {
// eslint-disable-next-line import/no-extraneous-dependencies, import/no-unresolved
dseDriver = require('dse-driver');
} catch (e) {
dseDriver = null;
}
const cql = Promise.promisifyAll(dseDriver || require('cassandra-driver'));
const ORM = Promise.promisifyAll(require('./orm/apollo'));
const readdirpAsync = Promise.promisify(require('readdirp'));
const debug = require('debug')('express-cassandra');
const exporter = require('./utils/exporter');
const importer = require('./utils/importer');
const CassandraClient = function f(options) {
this.modelInstance = {};
this.orm = new ORM(options.clientOptions, options.ormOptions);
this.orm = Promise.promisifyAll(this.orm);
};
CassandraClient.createClient = (options) => (new CassandraClient(options));
CassandraClient.setDirectory = (directory) => {
CassandraClient.directory = directory;
return CassandraClient;
};
CassandraClient.syncModelFileToDB = (file, callback) => {
Iif (!file.name.includes('Model')) {
callback();
return;
}
const modelName = CassandraClient._translateFileNameToModelName(file.name);
Eif (modelName) {
const fileLocation = path.join(CassandraClient.directory, file.path);
// eslint-disable-next-line import/no-dynamic-require
const defaultModelSchema = require(fileLocation);
const modelSchema = defaultModelSchema.default ? defaultModelSchema.default : defaultModelSchema;
CassandraClient.modelInstance[modelName] = CassandraClient.orm.addModel(modelName.toLowerCase(), modelSchema);
CassandraClient.modelInstance[modelName].syncDB(callback);
CassandraClient.modelInstance[modelName] = Promise.promisifyAll(CassandraClient.modelInstance[modelName]);
return;
}
callback();
};
CassandraClient.bind = (options, cb) => {
CassandraClient.modelInstance = {};
CassandraClient.orm = new ORM(options.clientOptions, options.ormOptions);
CassandraClient.orm = Promise.promisifyAll(CassandraClient.orm);
CassandraClient.orm.initAsync()
.then(() => readdirpAsync({
root: CassandraClient.directory,
fileFilter: [
'*.js', '*.javascript', '*.jsx', '*.coffee', '*.coffeescript', '*.iced',
'*.script', '*.ts', '*.tsx', '*.typescript', '*.cjsx', '*.co', '*.json',
'*.json5', '*.litcoffee', '*.liticed', '*.ls', '*.node', '*.toml', '*.wisp',
],
}))
.then((fileList) => {
const syncModelTasks = [];
const syncModelFileToDBAsync = Promise.promisify(CassandraClient.syncModelFileToDB);
fileList = fileList.files;
fileList.forEach((file) => {
syncModelTasks.push(syncModelFileToDBAsync(file));
});
return Promise.all(syncModelTasks);
})
.then(() => {
Eif (cb) cb();
})
.catch((err) => {
if (cb && _.isArray(err) && err.length > 0) cb(err[0]);
else if (cb) cb(err);
});
};
CassandraClient.bindAsync = Promise.promisify(CassandraClient.bind);
CassandraClient.prototype.init = function f(callback) {
this.orm.init(callback);
};
CassandraClient.prototype.initAsync = Promise.promisify(CassandraClient.prototype.init);
CassandraClient.getTableList = function f(callback) {
const systemClient = this.orm.get_system_client();
const keyspace = this.orm.get_keyspace_name();
const tables = [];
systemClient.connect()
.then(() => {
const systemQuery = 'SELECT table_name FROM system_schema.tables WHERE keyspace_name = ?';
debug(`Finding tables in keyspace: ${keyspace}`);
return systemClient.execute(systemQuery, [keyspace]);
})
.then((result) => {
for (let i = 0; i < result.rows.length; i++) {
tables.push(result.rows[i].table_name);
}
})
.then(() => systemClient.shutdown())
.then(() => {
callback(null, tables);
})
.catch((err) => {
callback(err);
});
};
CassandraClient.getTableListAsync = Promise.promisify(CassandraClient.getTableList);
CassandraClient.export = function f(fixtureDirectory, callback) {
const systemClient = this.orm.get_system_client();
const keyspace = this.orm.get_keyspace_name();
systemClient.connect()
.then(() => this.getTableListAsync())
.then((tables) =>
Promise.each(tables, (table) =>
exporter.processTableExport(systemClient, fixtureDirectory, keyspace, table)))
.then(() => systemClient.shutdown())
.then(() => {
debug('==================================================');
debug(`Completed exporting all tables from keyspace: ${keyspace}`);
callback();
})
.catch((err) => {
debug(err);
callback(err);
});
};
CassandraClient.exportAsync = Promise.promisify(CassandraClient.export);
CassandraClient.import = function f(fixtureDirectory, options, callback) {
Iif (arguments.length === 2) {
callback = options;
options = {};
}
const defaults = {
batchSize: 1,
};
options = _.defaultsDeep({}, options, defaults);
const systemClient = this.orm.get_system_client();
const keyspace = this.orm.get_keyspace_name();
systemClient.connect()
.then(() => this.getTableListAsync())
.then((tables) =>
Promise.each(tables, (table) =>
importer.processTableImport(systemClient, fixtureDirectory, keyspace, table, options.batchSize)))
.then(() => systemClient.shutdown())
.then(() => {
debug('==================================================');
debug(`Completed importing to keyspace: ${keyspace}`);
callback();
})
.catch((err) => {
debug(err);
callback(err);
});
};
CassandraClient.importAsync = Promise.promisify(CassandraClient.import);
CassandraClient.prototype.loadSchema = function f(modelName, modelSchema) {
this.modelInstance[modelName] = this.orm.addModel(modelName, modelSchema);
this.modelInstance[modelName] = Promise.promisifyAll(this.modelInstance[modelName]);
return this.modelInstance[modelName];
};
CassandraClient.uuid = () => (cql.types.Uuid.random());
CassandraClient.uuidFromString = (str) => (cql.types.Uuid.fromString(str));
CassandraClient.uuidFromBuffer = (buf) => (new cql.types.Uuid(buf));
CassandraClient.timeuuid = () => (cql.types.TimeUuid.now());
CassandraClient.timeuuidFromDate = (date) => (cql.types.TimeUuid.fromDate(date));
CassandraClient.timeuuidFromString = (str) => (cql.types.TimeUuid.fromString(str));
CassandraClient.timeuuidFromBuffer = (buf) => (new cql.types.TimeUuid(buf));
CassandraClient.maxTimeuuid = (date) => (cql.types.TimeUuid.max(date));
CassandraClient.minTimeuuid = (date) => (cql.types.TimeUuid.min(date));
CassandraClient.prototype.doBatch = function f(queries, options, callback) {
Iif (arguments.length === 2) {
callback = options;
options = {};
}
const defaults = {
prepare: true,
};
options = _.defaultsDeep({}, options, defaults);
const randomModel = this.modelInstance[Object.keys(this.modelInstance)[0]];
const beforeHooks = [];
let batchResult;
Promise.all(beforeHooks)
.then(() => {
if (queries.length > 1) {
return randomModel.execute_batchAsync(queries, options);
}
if (queries.length > 0) {
debug('single query provided for batch request, applying as non batch query');
return randomModel.execute_queryAsync(queries[0].query, queries[0].params, options);
}
debug('no queries provided for batch request, empty array found, doing nothing');
return {};
})
.then((response) => {
batchResult = response;
for (let i = 0; i < queries.length; i++) {
const afterHookResponse = queries[i].after_hook();
Iif (afterHookResponse !== true) {
callback(afterHookResponse);
return;
}
}
callback(null, batchResult);
})
.catch((err) => {
callback(err);
});
};
CassandraClient.prototype.doBatchAsync = Promise.promisify(CassandraClient.prototype.doBatch);
CassandraClient.doBatch = function f(queries, options, callback) {
Eif (arguments.length === 2) {
callback = options;
options = {};
}
const defaults = {
prepare: true,
};
options = _.defaultsDeep({}, options, defaults);
CassandraClient.prototype.doBatch.call(CassandraClient, queries, options, callback);
};
CassandraClient.doBatchAsync = Promise.promisify(CassandraClient.doBatch);
CassandraClient._translateFileNameToModelName = (fileName) => (
fileName.slice(0, fileName.lastIndexOf('.')).replace('Model', '')
);
Object.defineProperties(CassandraClient, {
consistencies: {
get() {
return cql.types.consistencies;
},
},
datatypes: {
get() {
return cql.types;
},
},
driver: {
get() {
return cql;
},
},
instance: {
get() {
return CassandraClient.modelInstance;
},
},
close: {
get() {
return CassandraClient.orm.close;
},
},
closeAsync: {
get() {
return Promise.promisify(CassandraClient.orm.close);
},
},
});
Object.defineProperties(CassandraClient.prototype, {
consistencies: {
get() {
return cql.types.consistencies;
},
},
datatypes: {
get() {
return cql.types;
},
},
driver: {
get() {
return cql;
},
},
instance: {
get() {
return this.modelInstance;
},
},
close: {
get() {
return this.orm.close;
},
},
closeAsync: {
get() {
return Promise.promisify(this.orm.close);
},
},
});
CassandraClient.prototype.uuid = CassandraClient.uuid;
CassandraClient.prototype.uuidFromString = CassandraClient.uuidFromString;
CassandraClient.prototype.uuidFromBuffer = CassandraClient.uuidFromBuffer;
CassandraClient.prototype.timeuuid = CassandraClient.timeuuid;
CassandraClient.prototype.timeuuidFromDate = CassandraClient.timeuuidFromDate;
CassandraClient.prototype.timeuuidFromString = CassandraClient.timeuuidFromString;
CassandraClient.prototype.timeuuidFromBuffer = CassandraClient.timeuuidFromBuffer;
CassandraClient.prototype.maxTimeuuid = CassandraClient.maxTimeuuid;
CassandraClient.prototype.minTimeuuid = CassandraClient.minTimeuuid;
CassandraClient.prototype._translateFileNameToModelName = CassandraClient._translateFileNameToModelName;
module.exports = CassandraClient;
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