| 1 | | // Generated by CoffeeScript 1.4.0 |
| 2 | 1 | var EventEmitter, Stream, each, split, thrift, transport, |
| 3 | | __slice = [].slice; |
| 4 | | |
| 5 | 1 | Stream = require('stream'); |
| 6 | | |
| 7 | 1 | each = require('each'); |
| 8 | | |
| 9 | 1 | thrift = require('thrift'); |
| 10 | | |
| 11 | 1 | transport = require('thrift/lib/thrift/transport'); |
| 12 | | |
| 13 | 1 | EventEmitter = require('events').EventEmitter; |
| 14 | | |
| 15 | 1 | split = module.exports.split = function(hqls) { |
| 16 | 5 | var commented; |
| 17 | 5 | if (Array.isArray(hqls)) { |
| 18 | 0 | return hqls; |
| 19 | | } |
| 20 | 5 | commented = false; |
| 21 | 5 | hqls = hqls.split('\n').filter(function(line) { |
| 22 | 54 | var skip; |
| 23 | 54 | line = line.trim(); |
| 24 | 54 | skip = false; |
| 25 | 54 | if (!commented && line.indexOf('/*') !== -1) { |
| 26 | 1 | commented = '/*'; |
| 27 | 1 | skip = true; |
| 28 | 53 | } else if (!commented && line === '--') { |
| 29 | 1 | commented = '--'; |
| 30 | 1 | skip = true; |
| 31 | 52 | } else if (commented === '/*' && line.lastIndexOf('*/') !== -1 && line.lastIndexOf('*/') === (line.length - 2)) { |
| 32 | 1 | commented = false; |
| 33 | 1 | skip = true; |
| 34 | 51 | } else if (commented === '--' && line === '--') { |
| 35 | 1 | commented = false; |
| 36 | 1 | skip = true; |
| 37 | | } |
| 38 | 54 | if (line.indexOf('--') === 0) { |
| 39 | 16 | skip = true; |
| 40 | | } |
| 41 | 54 | return !commented && !skip; |
| 42 | | }).join('\n'); |
| 43 | 5 | hqls = hqls.split(';'); |
| 44 | 5 | hqls = hqls.map(function(query) { |
| 45 | 18 | return query.trim(); |
| 46 | | }); |
| 47 | 5 | return hqls = hqls.filter(function(query) { |
| 48 | 18 | return query.indexOf('--') !== 0 && query !== ''; |
| 49 | | }); |
| 50 | | }; |
| 51 | | |
| 52 | 1 | module.exports.createClient = function(options) { |
| 53 | 4 | var client, connection, _ref, _ref1, _ref2, _ref3, _ref4; |
| 54 | 4 | if (options == null) { |
| 55 | 0 | options = {}; |
| 56 | | } |
| 57 | 4 | if ((_ref = options.version) == null) { |
| 58 | 0 | options.version = '0.7.1-cdh3u3'; |
| 59 | | } |
| 60 | 4 | if ((_ref1 = options.server) == null) { |
| 61 | 0 | options.server = '127.0.0.1'; |
| 62 | | } |
| 63 | 4 | if ((_ref2 = options.port) == null) { |
| 64 | 0 | options.port = 10000; |
| 65 | | } |
| 66 | 4 | if ((_ref3 = options.timeout) == null) { |
| 67 | 0 | options.timeout = 1000; |
| 68 | | } |
| 69 | 4 | if ((_ref4 = options.transport) == null) { |
| 70 | 1 | options.transport = transport.TBufferedTransport; |
| 71 | | } |
| 72 | 4 | connection = thrift.createConnection(options.server, options.port, options); |
| 73 | 4 | client = thrift.createClient(require("./" + options.version + "/ThriftHive"), connection); |
| 74 | 4 | return { |
| 75 | | connection: connection, |
| 76 | | client: client, |
| 77 | | end: connection.end.bind(connection), |
| 78 | | execute: function(query, callback) { |
| 79 | 14 | var emitter; |
| 80 | 14 | emitter = new EventEmitter; |
| 81 | 14 | process.nextTick(function() { |
| 82 | 14 | emitter.emit('before', query); |
| 83 | 14 | return client.execute(query, function(err) { |
| 84 | 14 | var emitError, lboth, lerror; |
| 85 | 14 | if (err) { |
| 86 | 2 | emitter.readable = false; |
| 87 | 2 | lerror = emitter.listeners('error').length; |
| 88 | 2 | lboth = emitter.listeners('both').length; |
| 89 | 2 | emitError = lerror || (!lerror && !lboth && !callback); |
| 90 | 2 | if (emitError) { |
| 91 | 1 | emitter.emit('error', err); |
| 92 | | } |
| 93 | | } else { |
| 94 | 12 | emitter.emit('end', null, query); |
| 95 | | } |
| 96 | 14 | emitter.emit('both', err, query); |
| 97 | 14 | if (callback) { |
| 98 | 9 | return callback(err, callback); |
| 99 | | } |
| 100 | | }); |
| 101 | | }); |
| 102 | 14 | return emitter; |
| 103 | | }, |
| 104 | | query: function(query, size) { |
| 105 | 8 | var buffer, callback, count, emitter, exec, fetch, handle, |
| 106 | | _this = this; |
| 107 | 8 | if (arguments.length === 2 && typeof size === 'function') { |
| 108 | 0 | callback = size; |
| 109 | 0 | size = null; |
| 110 | | } |
| 111 | 8 | exec = function() { |
| 112 | 7 | emitter.emit('before', query); |
| 113 | 7 | return client.execute(query, function(err) { |
| 114 | 7 | var emitError, lboth, lerror; |
| 115 | 7 | if (err) { |
| 116 | 1 | emitter.readable = false; |
| 117 | 1 | lerror = emitter.listeners('error').length; |
| 118 | 1 | lboth = emitter.listeners('both').length; |
| 119 | 1 | emitError = lerror || (!lerror && !lboth); |
| 120 | 1 | if (emitError) { |
| 121 | 1 | emitter.emit('error', err); |
| 122 | | } |
| 123 | 1 | emitter.emit('both', err, query); |
| 124 | 1 | return; |
| 125 | | } |
| 126 | 6 | return fetch(); |
| 127 | | }); |
| 128 | | }; |
| 129 | 8 | if (query) { |
| 130 | 5 | process.nextTick(exec); |
| 131 | | } |
| 132 | 8 | buffer = []; |
| 133 | 8 | count = 0; |
| 134 | 8 | emitter = new Stream; |
| 135 | 8 | emitter.size = size; |
| 136 | 8 | emitter.readable = true; |
| 137 | 8 | emitter.paused = 0; |
| 138 | 8 | emitter.query = function(q) { |
| 139 | 2 | if (query) { |
| 140 | 0 | throw new Error('Query already defined'); |
| 141 | | } |
| 142 | 2 | query = q; |
| 143 | 2 | exec(); |
| 144 | 2 | return this; |
| 145 | | }; |
| 146 | 8 | emitter.pause = function() { |
| 147 | 54 | return this.paused = 1; |
| 148 | | }; |
| 149 | 8 | emitter.resume = function() { |
| 150 | 54 | this.was = this.paused; |
| 151 | 54 | this.paused = 0; |
| 152 | 54 | if (this.was) { |
| 153 | 6 | return fetch(); |
| 154 | | } |
| 155 | | }; |
| 156 | 8 | handle = function(err, rows) { |
| 157 | 21 | var emitError, lboth, lerror, row, _i, _len; |
| 158 | 21 | if (err) { |
| 159 | 0 | emitter.readable = false; |
| 160 | 0 | lerror = emitter.listeners('error').length; |
| 161 | 0 | lboth = emitter.listeners('both').length; |
| 162 | 0 | emitError = lerror || (!lerror && !lboth); |
| 163 | 0 | if (emitError) { |
| 164 | 0 | emitter.emit('error', err); |
| 165 | | } |
| 166 | 0 | emitter.emit('both', err, query); |
| 167 | 0 | return; |
| 168 | | } |
| 169 | 21 | rows = rows.map(function(row) { |
| 170 | 273 | return row.split('\t'); |
| 171 | | }); |
| 172 | 21 | for (_i = 0, _len = rows.length; _i < _len; _i++) { |
| 173 | 273 | row = rows[_i]; |
| 174 | 273 | if (count === 0) { |
| 175 | 6 | emitter.emit('row-first', row, 0); |
| 176 | | } |
| 177 | 273 | emitter.emit('row', row, count++); |
| 178 | | } |
| 179 | 21 | if (rows.length === emitter.size) { |
| 180 | 15 | if (!emitter.paused) { |
| 181 | 10 | return fetch(); |
| 182 | | } |
| 183 | | } else { |
| 184 | 6 | emitter.emit('row-last', row, count - 1); |
| 185 | 6 | emitter.readable = false; |
| 186 | 6 | emitter.emit('end', query); |
| 187 | 6 | return emitter.emit('both', null, query); |
| 188 | | } |
| 189 | | }; |
| 190 | 8 | fetch = function() { |
| 191 | 22 | if (emitter.paused || !emitter.readable) { |
| 192 | 1 | return; |
| 193 | | } |
| 194 | 21 | if (emitter.size) { |
| 195 | 18 | return client.fetchN(emitter.size, handle); |
| 196 | | } else { |
| 197 | 3 | return client.fetchAll(handle); |
| 198 | | } |
| 199 | | }; |
| 200 | 8 | return emitter; |
| 201 | | }, |
| 202 | | multi_execute: function(hqls, callback) { |
| 203 | 2 | var emitter, |
| 204 | | _this = this; |
| 205 | 2 | emitter = new EventEmitter; |
| 206 | 2 | hqls = split(hqls); |
| 207 | 2 | each(hqls).on('item', function(next, query) { |
| 208 | 4 | var exec; |
| 209 | 4 | exec = _this.execute(query, next); |
| 210 | 4 | return exec.on('before', function() { |
| 211 | 4 | var _ref5; |
| 212 | 4 | return (_ref5 = emitter.emit).call.apply(_ref5, [emitter, 'before'].concat(__slice.call(arguments))); |
| 213 | | }); |
| 214 | | }).on('both', function(err) { |
| 215 | 2 | var _ref5, _ref6, _ref7; |
| 216 | 2 | if (err) { |
| 217 | 1 | (_ref5 = emitter.emit).call.apply(_ref5, [emitter, 'error'].concat(__slice.call(arguments))); |
| 218 | | } else { |
| 219 | 1 | (_ref6 = emitter.emit).call.apply(_ref6, [emitter, 'end'].concat(__slice.call(arguments))); |
| 220 | | } |
| 221 | 2 | (_ref7 = emitter.emit).call.apply(_ref7, [emitter, 'both'].concat(__slice.call(arguments))); |
| 222 | 2 | if (callback) { |
| 223 | 2 | return callback(err); |
| 224 | | } |
| 225 | | }); |
| 226 | 2 | return emitter; |
| 227 | | }, |
| 228 | | multi_query: function(hqls, size) { |
| 229 | 3 | var query, |
| 230 | | _this = this; |
| 231 | 3 | hqls = split(hqls); |
| 232 | 3 | query = this.query(); |
| 233 | 3 | each(hqls).on('item', function(next, hql, i) { |
| 234 | 7 | var exec; |
| 235 | 7 | if (hqls.length !== i + 1) { |
| 236 | 5 | exec = _this.execute(hql); |
| 237 | 5 | exec.on('before', function() { |
| 238 | 5 | var _ref5; |
| 239 | 5 | return (_ref5 = query.emit).call.apply(_ref5, [query, 'before'].concat(__slice.call(arguments))); |
| 240 | | }); |
| 241 | 5 | exec.on('error', function(err) { |
| 242 | 1 | var emitError, lboth, lerror; |
| 243 | 1 | query.readable = false; |
| 244 | 1 | lerror = query.listeners('error').length; |
| 245 | 1 | lboth = query.listeners('both').length; |
| 246 | 1 | emitError = lerror || (!lerror && !lboth); |
| 247 | 1 | if (emitError) { |
| 248 | 1 | query.emit('error', err); |
| 249 | | } |
| 250 | 1 | return query.emit('both', err, query); |
| 251 | | }); |
| 252 | 5 | return exec.on('end', function() { |
| 253 | 4 | return next(); |
| 254 | | }); |
| 255 | | } else { |
| 256 | 2 | return query.query(hql, size); |
| 257 | | } |
| 258 | | }); |
| 259 | 3 | return query; |
| 260 | | } |
| 261 | | }; |
| 262 | | }; |