Update FromMySQL2PostgreSQL.js
This commit is contained in:
Anatoly Khaytovich
parent
3f042a6c3a
commit
accb67ad8a
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@ -90,7 +90,7 @@ FromMySQL2PostgreSQL.prototype.boot = function(self) {
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self.readDataTypesMap
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).then(
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function() {
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return new Promise(function(resolveBoot) {
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return new Promise(function(resolveBoot, rejectBoot) {
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console.log('\t--[boot] Boot is accomplished...');
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resolveBoot(self);
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});
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@ -231,9 +231,11 @@ FromMySQL2PostgreSQL.prototype.createTemporaryDirectory = function(self) {
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resolve(self);
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}
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});
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} else if (!stat.isDirectory()) {
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self.log(self, '\t--[createTemporaryDirectory] Cannot perform a migration due to unexpected error');
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reject();
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} else {
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self.log(self, '\t--[createTemporaryDirectory] Temporary directory already exists...');
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resolve(self);
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@ -249,12 +251,12 @@ FromMySQL2PostgreSQL.prototype.createTemporaryDirectory = function(self) {
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* @returns {Promise}
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*/
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FromMySQL2PostgreSQL.prototype.removeTemporaryDirectory = function(self) {
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return new Promise(function(resolve) {
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return new Promise(function(resolve, reject) {
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fs.rmdir(self._tempDirPath, function(error) {
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var msg;
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if (error) {
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msg = '\t--[removeTemporaryDirectory] Note, TemporaryDirectory located at "' + self._tempDirPath + '" is not removed';
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msg = '\t--[removeTemporaryDirectory] Note, TemporaryDirectory located at "' + self._tempDirPath + '" is nor removed';
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} else {
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msg = '\t--[removeTemporaryDirectory] TemporaryDirectory located at "' + self._tempDirPath + '" is removed';
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}
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@ -283,14 +285,17 @@ FromMySQL2PostgreSQL.prototype.createLogsDirectory = function(self) {
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+ '"logs_directory": ' + self._logsDirPath
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);
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reject();
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} else {
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self.log(self, '\t--[createLogsDirectory] Logs directory is created...');
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resolve(self);
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}
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});
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} else if (!stat.isDirectory()) {
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console.log('\t--[createLogsDirectory] Cannot perform a migration due to unexpected error');
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reject();
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} else {
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self.log(self, '\t--[createLogsDirectory] Logs directory already exists...');
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resolve(self);
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@ -310,9 +315,9 @@ FromMySQL2PostgreSQL.prototype.createLogsDirectory = function(self) {
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* @returns {Promise}
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*/
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FromMySQL2PostgreSQL.prototype.log = function(self, log, isErrorLog) {
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var buffer = new Buffer(log + '\n\n');
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return new Promise(function(resolve) {
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var buffer = new Buffer(log + '\n\n');
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return new Promise(function(resolve, reject) {
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if (isErrorLog === undefined || isErrorLog === false) {
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console.log(log);
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}
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@ -321,42 +326,47 @@ FromMySQL2PostgreSQL.prototype.log = function(self, log, isErrorLog) {
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fs.open(self._allLogsPath, 'a', self._0777, function(error, fd) {
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if (!error) {
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self._allLogsPathFd = fd;
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fs.write(self._allLogsPathFd, buffer, 0, buffer.length, null, function() {
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fs.write(self._allLogsPathFd, buffer, 0, buffer.length, null, function(error) {
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resolve(self);
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});
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} else {
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resolve(self);
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}
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});
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} else {
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fs.write(self._allLogsPathFd, buffer, 0, buffer.length, null, function() {
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fs.write(self._allLogsPathFd, buffer, 0, buffer.length, null, function(error) {
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resolve(self);
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});
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}
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}).then(
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function() {
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return new Promise(function(resolveTableLog) {
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if (self._clonedSelfTableNamePath === undefined) {
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resolveTableLog(self);
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} else if (self._clonedSelfTableNamePathFd === undefined) {
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fs.open(self._clonedSelfTableNamePath, 'a', self._0777, function(error, fd) {
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if (!error) {
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self._clonedSelfTableNamePathFd = fd;
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fs.write(self._clonedSelfTableNamePathFd, buffer, 0, buffer.length, null, function() {
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resolveTableLog(self);
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});
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} else {
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resolveTableLog(self);
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}
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});
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} else {
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fs.write(self._clonedSelfTableNamePathFd, buffer, 0, buffer.length, null, function() {
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resolveTableLog(self);
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});
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function(self) {
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return new Promise(function(resolveTableLog, rejectTableLog) {
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if (self._clonedSelfTableNamePath === undefined) {
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resolveTableLog(self);
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} else if (self._clonedSelfTableNamePathFd === undefined) {
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fs.open(self._clonedSelfTableNamePath, 'a', self._0777, function(error, fd) {
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if (!error) {
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self._clonedSelfTableNamePathFd = fd;
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fs.write(self._clonedSelfTableNamePathFd, buffer, 0, buffer.length, null, function(error) {
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resolveTableLog(self);
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});
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} else {
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resolveTableLog(self);
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}
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});
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} else {
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fs.write(self._clonedSelfTableNamePathFd, buffer, 0, buffer.length, null, function(error) {
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resolveTableLog(self);
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});
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}
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});
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}
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});
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}
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);
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);
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};
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/**
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@ -368,7 +378,7 @@ FromMySQL2PostgreSQL.prototype.log = function(self, log, isErrorLog) {
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* @returns {Promise}
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*/
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FromMySQL2PostgreSQL.prototype.generateError = function(self, message, sql) {
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return new Promise(function(resolve) {
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return new Promise(function(resolve, reject) {
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message += sql === undefined ? '' : '\n\tSQL: ' + sql + '\n\n';
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var buffer = new Buffer(message);
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self.log(self, message, true);
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@ -377,7 +387,7 @@ FromMySQL2PostgreSQL.prototype.generateError = function(self, message, sql) {
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fs.open(self._errorLogsPath, 'a', self._0777, function(error, fd) {
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if (!error) {
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self._errorLogsPathFd = fd;
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fs.write(self._errorLogsPathFd, buffer, 0, buffer.length, null, function() {
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fs.write(self._errorLogsPathFd, buffer, 0, buffer.length, null, function(error) {
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resolve(self);
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});
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@ -387,7 +397,7 @@ FromMySQL2PostgreSQL.prototype.generateError = function(self, message, sql) {
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});
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} else {
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fs.write(self._errorLogsPathFd, buffer, 0, buffer.length, null, function() {
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fs.write(self._errorLogsPathFd, buffer, 0, buffer.length, null, function(error) {
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resolve(self);
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});
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}
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@ -416,6 +426,7 @@ FromMySQL2PostgreSQL.prototype.connect = function(self) {
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self.log(self, '\t--[connect] Cannot connect to MySQL server...');
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reject(self);
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}
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} else {
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resolve(self);
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}
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@ -457,6 +468,7 @@ FromMySQL2PostgreSQL.prototype.createSchema = function(self) {
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resolve(self);
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}
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});
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} else {
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resolve(self);
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}
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@ -473,15 +485,16 @@ FromMySQL2PostgreSQL.prototype.createSchema = function(self) {
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* @returns {Promise}
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*/
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FromMySQL2PostgreSQL.prototype.loadStructureToMigrate = function(self) {
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return new Promise(function(resolve) {
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return new Promise(function(resolve, reject) {
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resolve(self);
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}).then(
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self.connect,
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function() {
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self.log(self, '\t--[loadStructureToMigrate] Cannot establish DB connections...');
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}
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).then(
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function() {
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function(self) {
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return new Promise(function(resolve, reject) {
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var sql = 'SHOW FULL TABLES IN `' + self._mySqlDbName + '`;';
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self._mysql.getConnection(function(error, connection) {
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@ -501,9 +514,8 @@ FromMySQL2PostgreSQL.prototype.loadStructureToMigrate = function(self) {
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var viewsCnt = 0;
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var processTablePromises = [];
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var createViewPromises = [];
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for (var i = 0; i < rows.length; i++) {
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//if (i < 3) // TODO.
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if (rows[i].Table_type === 'BASE TABLE') {
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self._tablesToMigrate.push(rows[i]);
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tablesCnt++;
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@ -527,19 +539,15 @@ FromMySQL2PostgreSQL.prototype.loadStructureToMigrate = function(self) {
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Promise.all(
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processTablePromises
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).then(
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function() {
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resolve(self);
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},
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).then(
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self.cleanupLocal, // TODO.
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function() {
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reject();
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}
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).then(
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// TODO: treat FKs, views etc....
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function() {
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function(self) {
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resolve(self);
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},
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// TODO: probably one o tables was not created, do not create FKs, views etc....
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function() {
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reject();
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}
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@ -553,6 +561,26 @@ FromMySQL2PostgreSQL.prototype.loadStructureToMigrate = function(self) {
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);
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};
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/**
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* Cleanup resources related to given table.
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*
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* @param {FromMySQL2PostgreSQL} self
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* @returns {Promise}
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*/
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FromMySQL2PostgreSQL.prototype.cleanupLocal = function(self) {
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return new Promise(function(resolve, reject) {
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if (self._clonedSelfTableNamePathFd === undefined) {
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self.log(self, '\t--[cleanupLocal] Finished processing table `' + self._clonedSelfTableName + '`...');
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resolve(self);
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} else {
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fs.close(self._clonedSelfTableNamePathFd, function() {
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self.log(self, '\t--[cleanupLocal] Finished processing table `' + self._clonedSelfTableName + '`...');
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resolve(self);
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});
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}
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});
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};
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/**
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* Migrates structure of a single table to PostgreSql server.
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*
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@ -560,12 +588,12 @@ FromMySQL2PostgreSQL.prototype.loadStructureToMigrate = function(self) {
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* @returns {Promise}
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*/
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FromMySQL2PostgreSQL.prototype.createTable = function(self) {
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return new Promise(function(resolve) {
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return new Promise(function(resolve, reject) {
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resolve(self);
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}).then(
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self.connect
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).then(
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function() {
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function(self) {
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return new Promise(function(resolveCreateTable, rejectCreateTable) {
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self.log(self, '\t--[createTable] Currently creating table: `' + self._clonedSelfTableName + '`');
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var sql = 'SHOW COLUMNS FROM `' + self._clonedSelfTableName + '`;';
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@ -590,7 +618,7 @@ FromMySQL2PostgreSQL.prototype.createTable = function(self) {
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}
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sql = sql.slice(0, -1) + ');';
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pg.connect(self._targetConString, function(error, client, done) {
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if (error) {
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done();
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@ -629,12 +657,12 @@ FromMySQL2PostgreSQL.prototype.createTable = function(self) {
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* @returns {Promise}
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*/
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FromMySQL2PostgreSQL.prototype.populateTable = function(self) {
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return new Promise(function(resolve) {
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return new Promise(function(resolve, reject) {
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resolve(self);
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}).then(
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self.connect
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).then(
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function() {
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function(self) {
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return new Promise(function(resolvePopulateTable, rejectPopulateTable) {
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self.log(self, '\t--[populateTable] Currently populating table: `' + self._clonedSelfTableName + '`');
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@ -685,7 +713,7 @@ FromMySQL2PostgreSQL.prototype.populateTable = function(self) {
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}
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Promise.all(populateTableWorkers).then(
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function() {
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function(self) {
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resolvePopulateTable(self);
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},
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function() {
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@ -716,13 +744,13 @@ FromMySQL2PostgreSQL.prototype.populateTable = function(self) {
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* @returns {Promise}
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*/
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FromMySQL2PostgreSQL.prototype.populateTableWorker = function(self, offset, rowsInChunk, rowsCnt) {
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return new Promise(function(resolve) {
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return new Promise(function(resolve, reject) {
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resolve(self);
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}).then(
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self.connect
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).then(
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function() {
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return new Promise(function(resolvePopulateTableWorker) {
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function(self) {
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return new Promise(function(resolvePopulateTableWorker, rejectPopulateTableWorker) {
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var csvAddr = self._tempDirPath + '/' + self._clonedSelfTableName + offset + '.csv';
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var sql = 'SELECT * FROM `' + self._clonedSelfTableName + '` LIMIT ' + offset + ',' + rowsInChunk + ';';
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@ -743,8 +771,8 @@ FromMySQL2PostgreSQL.prototype.populateTableWorker = function(self, offset, rows
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// Sanitize records.
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// When sanitized - write them to a csv file.
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rowsInChunk = rows.length; // Must check amount of rows BEFORE sanitizing.
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var sanitizedRecords = [];
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var sanitizedRecords = [];
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for (var cnt = 0; cnt < rows.length; cnt++) {
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var sanitizedRecord = Object.create(null);
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@ -754,7 +782,7 @@ FromMySQL2PostgreSQL.prototype.populateTableWorker = function(self, offset, rows
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sanitizedRecords.push(sanitizedRecord);
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}
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csvStringify(sanitizedRecords, function(csvError, csvString) {
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var buffer = new Buffer(csvString);
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@ -783,26 +811,25 @@ FromMySQL2PostgreSQL.prototype.populateTableWorker = function(self, offset, rows
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client.query(sql, function(err, result) {
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done();
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if (err) {
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self.generateError(self, '\t--[populateTableWorker] ' + err, sql);
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self.generateError(self, '\t--[populateTableWorker] ' + err, sql);
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resolvePopulateTableWorker(self);
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} else {
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self._totalRowsInserted += result.rowCount;
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var msg = '\t--[populateTableWorker] For now inserted: ' + self._totalRowsInserted + ' rows, '
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+ 'Total rows to insert into "' + self._schema + '"."' + self._clonedSelfTableName + '": ' + rowsCnt;
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+ 'Total rows in "' + self._schema + '"."' + self._clonedSelfTableName + '": ' + rowsCnt;
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self.log(self, msg);
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fs.unlink(csvAddr, function() {
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fs.close(fd, function() {
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resolvePopulateTableWorker(self);
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});
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});
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}
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});
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});
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}
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});
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});
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}
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});
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}
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@ -843,12 +870,13 @@ FromMySQL2PostgreSQL.prototype.sanitizeValue = function(value) {
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* @returns {Promise}
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*/
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FromMySQL2PostgreSQL.prototype.processTable = function(self, tableName) {
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return new Promise(function(resolve) {
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return new Promise(function(resolve, reject) {
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self = self.clone(self);
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self._clonedSelfTableName = tableName;
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self._totalRowsInserted = 0;
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self._clonedSelfTableNamePath = self._logsDirPath + '/' + tableName + '.log';
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self._clonedSelfTableNamePath = self._logsDirPath + '/' + tableName + '.log';
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resolve(self);
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}).then(
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self.connect
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).then(
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@ -857,36 +885,13 @@ FromMySQL2PostgreSQL.prototype.processTable = function(self, tableName) {
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self.log(self, '\t--[processTable] Cannot establish DB connections...');
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}
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).then(
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self.populateTable, // TODO: Promise chain MUST continue, even after unsuccessfull 'self.populateTable'.
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self.populateTable,
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function() {
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self.log(self, '\t--[processTable] Cannot create table "' + self._schema + '"."' + self._clonedSelfTableName + '"...');
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self.cleanupLocal(self);
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}
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).then(
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self.cleanupLocal
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);
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};
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/**
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* Cleanup resources related to given table.
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*
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* @param {FromMySQL2PostgreSQL} self
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* @returns {Promise}
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*/
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FromMySQL2PostgreSQL.prototype.cleanupLocal = function(self) {
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return new Promise(function(resolve) {
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if (self._clonedSelfTableNamePathFd === undefined) {
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self.log(self, '\t--[cleanupLocal] Finished processing table `' + self._clonedSelfTableName + '`...');
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resolve(self);
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} else {
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fs.close(self._clonedSelfTableNamePathFd, function() {
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self.log(self, '\t--[cleanupLocal] Finished processing table `' + self._clonedSelfTableName + '`...');
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resolve(self);
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});
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}
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});
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};
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/**
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* Closes DB connections.
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*
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@ -894,7 +899,7 @@ FromMySQL2PostgreSQL.prototype.cleanupLocal = function(self) {
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* @returns {Promise}
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*/
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FromMySQL2PostgreSQL.prototype.closeConnections = function(self) {
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return new Promise(function(resolve) {
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return new Promise(function(resolve, reject) {
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if (self._mysql) {
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self._mysql.end(function(error) {
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if (error) {
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@ -905,6 +910,7 @@ FromMySQL2PostgreSQL.prototype.closeConnections = function(self) {
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pg.end();
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resolve(self);
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});
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} else {
|
||||
self.log(self, '\t--[closeConnections] All DB connections to both MySQL and PostgreSQL servers have been closed...');
|
||||
pg.end();
|
||||
|
|
@ -920,7 +926,7 @@ FromMySQL2PostgreSQL.prototype.closeConnections = function(self) {
|
|||
* @returns {Promise}
|
||||
*/
|
||||
FromMySQL2PostgreSQL.prototype.closeLogFiles = function(self) {
|
||||
return new Promise(function(resolveAllLogs) {
|
||||
return new Promise(function(resolveAllLogs, rejectAllLogs) {
|
||||
if (self._allLogsPathFd) {
|
||||
fs.close(self._allLogsPathFd, function() {
|
||||
resolveAllLogs(self);
|
||||
|
|
@ -929,8 +935,8 @@ FromMySQL2PostgreSQL.prototype.closeLogFiles = function(self) {
|
|||
resolveAllLogs(self);
|
||||
}
|
||||
}).then(
|
||||
function() {
|
||||
return new Promise(function(resolveErrorLogs) {
|
||||
function(self) {
|
||||
return new Promise(function(resolveErrorLogs, rejectErrorLogs) {
|
||||
if (self._errorLogsPathFd) {
|
||||
fs.close(self._errorLogsPathFd, function() {
|
||||
resolveErrorLogs(self);
|
||||
|
|
@ -950,7 +956,7 @@ FromMySQL2PostgreSQL.prototype.closeLogFiles = function(self) {
|
|||
* @returns {Promise}
|
||||
*/
|
||||
FromMySQL2PostgreSQL.prototype.cleanup = function(self) {
|
||||
return new Promise(function(resolve) {
|
||||
return new Promise(function(resolve, reject) {
|
||||
self.log(self, '\t--[cleanup] Cleanup resources...');
|
||||
resolve(self);
|
||||
}).then(
|
||||
|
|
@ -960,9 +966,9 @@ FromMySQL2PostgreSQL.prototype.cleanup = function(self) {
|
|||
).then(
|
||||
self.closeLogFiles
|
||||
).then(
|
||||
function() {
|
||||
return new Promise(function(resolve) {
|
||||
self.log(self, '\t--[cleanup] Cleanup finished...');
|
||||
function(self) {
|
||||
return new Promise(function(resolve, reject) {
|
||||
self.log(self, '\t--[cleanup] Cleanup finished...');
|
||||
resolve(self);
|
||||
});
|
||||
}
|
||||
|
|
@ -978,7 +984,7 @@ FromMySQL2PostgreSQL.prototype.cleanup = function(self) {
|
|||
FromMySQL2PostgreSQL.prototype.run = function(config) {
|
||||
var self = this;
|
||||
self._config = config;
|
||||
var promise = new Promise(function(resolve) {
|
||||
var promise = new Promise(function(resolve, reject) {
|
||||
resolve(self);
|
||||
});
|
||||
|
||||
|
|
@ -989,20 +995,23 @@ FromMySQL2PostgreSQL.prototype.run = function(config) {
|
|||
function() {
|
||||
console.log('\t--[run] Failed to boot migration');
|
||||
}
|
||||
|
||||
).then(
|
||||
self.createTemporaryDirectory,
|
||||
function() {
|
||||
self.log(self, '\t--[run] Logs directory was not created...');
|
||||
}
|
||||
|
||||
).then(
|
||||
self.createSchema,
|
||||
function() {
|
||||
self.log(self, '\t--[run] Temporary directory was not created...');
|
||||
}
|
||||
|
||||
).then(
|
||||
self.loadStructureToMigrate,
|
||||
function() {
|
||||
return new Promise(function(resolveError) {
|
||||
return new Promise(function(resolveError, rejectError) {
|
||||
resolveError(self);
|
||||
}).then(
|
||||
function() {
|
||||
|
|
@ -1011,21 +1020,21 @@ FromMySQL2PostgreSQL.prototype.run = function(config) {
|
|||
}
|
||||
);
|
||||
}
|
||||
|
||||
).then(
|
||||
function() {
|
||||
return new Promise(function(resolve) {
|
||||
return new Promise(function(resolve, reject) {
|
||||
resolve(self);
|
||||
}).then(
|
||||
self.cleanup
|
||||
).then(
|
||||
function() {
|
||||
function(self) {
|
||||
var timeTaken = (new Date()) - self._timeBegin;
|
||||
var hours = Math.floor(timeTaken / 1000 / 3600);
|
||||
timeTaken -= hours * 1000 * 3600;
|
||||
var minutes = Math.floor(timeTaken / 1000 / 60);
|
||||
timeTaken -= minutes * 1000 * 60;
|
||||
var seconds = Math.ceil(timeTaken / 1000);
|
||||
|
||||
hours = hours < 10 ? '0' + hours : hours;
|
||||
minutes = minutes < 10 ? '0' + minutes : minutes;
|
||||
seconds = seconds < 10 ? '0' + seconds : seconds;
|
||||
|
|
@ -1038,7 +1047,7 @@ FromMySQL2PostgreSQL.prototype.run = function(config) {
|
|||
);
|
||||
},
|
||||
function() {
|
||||
return new Promise(function(resolveErr) {
|
||||
return new Promise(function(resolveErr, rejectErr) {
|
||||
resolveErr(self);
|
||||
}).then(
|
||||
function() {
|
||||
|
|
@ -1052,7 +1061,6 @@ FromMySQL2PostgreSQL.prototype.run = function(config) {
|
|||
var minutes = Math.floor(timeTaken / 1000 / 60);
|
||||
timeTaken -= minutes * 1000 * 60;
|
||||
var seconds = Math.ceil(timeTaken / 1000);
|
||||
|
||||
hours = hours < 10 ? '0' + hours : hours;
|
||||
minutes = minutes < 10 ? '0' + minutes : minutes;
|
||||
seconds = seconds < 10 ? '0' + seconds : seconds;
|
||||
|
|
@ -1068,5 +1076,3 @@ FromMySQL2PostgreSQL.prototype.run = function(config) {
|
|||
};
|
||||
|
||||
module.exports.FromMySQL2PostgreSQL = FromMySQL2PostgreSQL;
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue