1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one |
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3 | * or more contributor license agreements. See the NOTICE file |
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4 | * distributed with this work for additional information |
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5 | * regarding copyright ownership. The ASF licenses this file |
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6 | * to you under the Apache License, Version 2.0 (the |
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7 | * "License"); you may not use this file except in compliance |
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8 | * with the License. You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | package org.apache.hadoop.fs; |
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19 | |
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20 | import java.io.IOException; |
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21 | import java.io.InputStream; |
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22 | import java.net.URISyntaxException; |
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23 | import java.net.URL; |
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24 | import java.net.URLConnection; |
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25 | |
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26 | import org.apache.hadoop.conf.Configuration; |
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27 | |
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28 | /** |
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29 | * Representation of a URL connection to open InputStreams. |
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30 | */ |
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31 | class FsUrlConnection extends URLConnection { |
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32 | |
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33 | private Configuration conf; |
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34 | |
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35 | private InputStream is; |
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36 | |
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37 | FsUrlConnection(Configuration conf, URL url) { |
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38 | super(url); |
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39 | this.conf = conf; |
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40 | } |
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41 | |
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42 | @Override |
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43 | public void connect() throws IOException { |
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44 | try { |
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45 | FileSystem fs = FileSystem.get(url.toURI(), conf); |
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46 | is = fs.open(new Path(url.getPath())); |
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47 | } catch (URISyntaxException e) { |
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48 | throw new IOException(e.toString()); |
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49 | } |
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50 | } |
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51 | |
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52 | /* @inheritDoc */ |
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53 | @Override |
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54 | public InputStream getInputStream() throws IOException { |
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55 | if (is == null) { |
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56 | connect(); |
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57 | } |
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58 | return is; |
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59 | } |
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60 | |
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61 | } |
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