1 | // Copyright © 2017, 2018 IBM Corp. All rights reserved.
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2 | //
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3 | // Licensed under the Apache License, Version 2.0 (the "License");
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4 | // you may not use this file except in compliance with the License.
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5 | // You may obtain a copy of the License at
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6 | //
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7 | // http://www.apache.org/licenses/LICENSE-2.0
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8 | //
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9 | // Unless required by applicable law or agreed to in writing, software
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10 | // distributed under the License is distributed on an "AS IS" BASIS,
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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12 | // See the License for the specific language governing permissions and
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13 | // limitations under the License.
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14 | ;
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15 |
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16 | module.exports = function(db, options, readstream, ee, callback) {
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17 | var liner = require('../includes/liner.js')();
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18 | var writer = require('../includes/writer.js')(db, options.bufferSize, options.parallelism, ee);
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19 |
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20 | // pipe the input to the output, via transformation functions
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21 | readstream
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22 | .pipe(liner) // transform the input stream into per-line
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23 | .on('error', function(err) {
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24 | // Forward the error to the writer event emitter where we already have
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25 | // listeners on for handling errors
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26 | writer.emit('error', err);
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27 | })
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28 | .pipe(writer); // transform the data
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29 |
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30 | callback(null, writer);
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31 | };
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