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| <div class="title">filesystem-util.cc</div> </div> |
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| <div class="contents"> |
| <a href="filesystem-util_8cc.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2012 Cloudera Inc.</span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// You may obtain a copy of the License at</span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">//</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// See the License for the specific language governing permissions and</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// limitations under the License.</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <fcntl.h></span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <sys/stat.h></span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <boost/filesystem.hpp></span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <gutil/strings/substitute.h></span></div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "<a class="code" href="filesystem-util_8h.html">util/filesystem-util.h</a>"</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "<a class="code" href="error-util_8h.html">util/error-util.h</a>"</span></div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "<a class="code" href="names_8h.html">common/names.h</a>"</span></div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">using</span> std::exception;</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">using namespace </span>strings;</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// boost::filesystem functions, which may throw exceptions, are used with their</span></div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// fully-qualified names to explicitly distinguish them from unix system</span></div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// functions that do not throw exceptions.</span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">namespace </span>impala {</div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div> |
| <div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="classimpala_1_1FileSystemUtil.html#a6065567b7bb28e1325172b0b0aac0991"> 33</a></span> <a class="code" href="classimpala_1_1Status.html">Status</a> FileSystemUtil::CreateDirectories(<span class="keyword">const</span> vector<string>& directories) {</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < directories.size(); ++i) {</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="comment">// Remove the directory and it's contents if it exists. Ignore the error</span></div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="comment">// that occurs if the directory doesn't exist. Only report the error from</span></div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="comment">// create directory.</span></div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">try</span> {</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  boost::filesystem::remove_all(directories[i]);</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  } <span class="keywordflow">catch</span> (exception& e) {</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  }</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">try</span> {</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  boost::filesystem::create_directory(directories[i]);</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  } <span class="keywordflow">catch</span> (exception& e) {</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">return</span> <a class="code" href="classimpala_1_1Status.html">Status</a>(<a class="code" href="classimpala_1_1ErrorMsg.html">ErrorMsg</a>(TErrorCode::RUNTIME_ERROR, Substitute(</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="stringliteral">"Encountered error creating directory $0: $1"</span>, directories[i], e.what())));</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  }</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">Status::OK</a>;</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> }</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div> |
| <div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="classimpala_1_1FileSystemUtil.html#a8bca8d57e72bf2b881b585dd17143af4"> 53</a></span> <a class="code" href="classimpala_1_1Status.html">Status</a> FileSystemUtil::RemovePaths(<span class="keyword">const</span> vector<string>& directories) {</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < directories.size(); ++i) {</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">try</span> {</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  boost::filesystem::remove_all(directories[i]);</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  } <span class="keywordflow">catch</span> (exception& e) {</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">return</span> <a class="code" href="classimpala_1_1Status.html">Status</a>(<a class="code" href="classimpala_1_1ErrorMsg.html">ErrorMsg</a>(TErrorCode::RUNTIME_ERROR, Substitute(</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="stringliteral">"Encountered error removing directory $0: $1"</span>, directories[i], e.what())));</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">Status::OK</a>;</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span> }</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div> |
| <div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="classimpala_1_1FileSystemUtil.html#a771310d2976c80472079b9fe0c918a66"> 66</a></span> <a class="code" href="classimpala_1_1Status.html">Status</a> FileSystemUtil::CreateFile(<span class="keyword">const</span> <span class="keywordtype">string</span>& file_path) {</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">int</span> fd = creat(file_path.c_str(), S_IRUSR | S_IWUSR);</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">if</span> (fd < 0) {</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> <a class="code" href="classimpala_1_1Status.html">Status</a>(<a class="code" href="classimpala_1_1ErrorMsg.html">ErrorMsg</a>(TErrorCode::RUNTIME_ERROR,</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  Substitute(<span class="stringliteral">"Create file $0 failed with errno=$1 description=$2"</span>,</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  file_path.c_str(), errno, <a class="code" href="namespaceimpala.html#a28b1df9d4e17cc617547521c05eebc58">GetStrErrMsg</a>())));</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">int</span> success = close(fd);</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">if</span> (success < 0) {</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">return</span> <a class="code" href="classimpala_1_1Status.html">Status</a>(<a class="code" href="classimpala_1_1ErrorMsg.html">ErrorMsg</a>(TErrorCode::RUNTIME_ERROR,</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  Substitute(<span class="stringliteral">"Close file $0 failed with errno=$1 description=$2"</span>,</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  file_path.c_str(), errno, <a class="code" href="namespaceimpala.html#a28b1df9d4e17cc617547521c05eebc58">GetStrErrMsg</a>())));</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">Status::OK</a>;</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span> }</div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div> |
| <div class="line"><a name="l00085"></a><span class="lineno"><a class="line" href="classimpala_1_1FileSystemUtil.html#a851f73dacbc7a0d343e5c53718c17474"> 85</a></span> <a class="code" href="classimpala_1_1Status.html">Status</a> FileSystemUtil::ResizeFile(<span class="keyword">const</span> <span class="keywordtype">string</span>& file_path, int64_t trunc_len) {</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordtype">int</span> success = truncate(file_path.c_str(), trunc_len);</div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">if</span> (success != 0) {</div> |
| <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">return</span> <a class="code" href="classimpala_1_1Status.html">Status</a>(<a class="code" href="classimpala_1_1ErrorMsg.html">ErrorMsg</a>(TErrorCode::RUNTIME_ERROR, Substitute(</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="stringliteral">"Truncate file $0 to length $1 failed with errno $2 ($3)"</span>,</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  file_path, trunc_len, errno, <a class="code" href="namespaceimpala.html#a28b1df9d4e17cc617547521c05eebc58">GetStrErrMsg</a>())));</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">Status::OK</a>;</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span> }</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div> |
| <div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="classimpala_1_1FileSystemUtil.html#acfd4221191ae225cb044dffa01cd1ed0"> 96</a></span> <a class="code" href="classimpala_1_1Status.html">Status</a> FileSystemUtil::VerifyIsDirectory(<span class="keyword">const</span> <span class="keywordtype">string</span>& directory_path) {</div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">try</span> {</div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">if</span> (!boost::filesystem::exists(directory_path)) {</div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> <a class="code" href="classimpala_1_1Status.html">Status</a>(<a class="code" href="classimpala_1_1ErrorMsg.html">ErrorMsg</a>(TErrorCode::RUNTIME_ERROR, Substitute(</div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="stringliteral">"Directory path $0 does not exist"</span>, directory_path)));</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  }</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  } <span class="keywordflow">catch</span> (exception& e) {</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">return</span> <a class="code" href="classimpala_1_1Status.html">Status</a>(<a class="code" href="classimpala_1_1ErrorMsg.html">ErrorMsg</a>(TErrorCode::RUNTIME_ERROR, Substitute(</div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="stringliteral">"Encountered exception while verifying existence of directory path $0: $1"</span>,</div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  directory_path, e.what())));</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  }</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">if</span> (!boost::filesystem::is_directory(directory_path)) {</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">return</span> <a class="code" href="classimpala_1_1Status.html">Status</a>(<a class="code" href="classimpala_1_1ErrorMsg.html">ErrorMsg</a>(TErrorCode::RUNTIME_ERROR, Substitute(</div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="stringliteral">"Path $0 is not a directory"</span>, directory_path)));</div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  }</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">Status::OK</a>;</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span> }</div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div> |
| <div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="classimpala_1_1FileSystemUtil.html#a4ab790b902b4a05266791f9a7874832b"> 114</a></span> <a class="code" href="classimpala_1_1Status.html">Status</a> FileSystemUtil::GetSpaceAvailable(<span class="keyword">const</span> <span class="keywordtype">string</span>& directory_path,</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <a class="code" href="classuint64__t.html">uint64_t</a>* available_bytes) {</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">try</span> {</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  boost::filesystem::space_info info = <a class="code" href="namespaceimpala.html#a21b52490ca9415393fd10a8c6cdcf664">boost::filesystem::space</a>(directory_path);</div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  *available_bytes = info.available;</div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  } <span class="keywordflow">catch</span> (exception& e) {</div> |
| <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> <a class="code" href="classimpala_1_1Status.html">Status</a>(<a class="code" href="classimpala_1_1ErrorMsg.html">ErrorMsg</a>(TErrorCode::RUNTIME_ERROR, Substitute(</div> |
| <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="stringliteral">"Encountered exception while checking available space for path $0: $1"</span>,</div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  directory_path, e.what())));</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  }</div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">Status::OK</a>;</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span> }</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span> } <span class="comment">// namespace impala</span></div> |
| <div class="ttc" id="filesystem-util_8h_html"><div class="ttname"><a href="filesystem-util_8h.html">filesystem-util.h</a></div></div> |
| <div class="ttc" id="error-util_8h_html"><div class="ttname"><a href="error-util_8h.html">error-util.h</a></div></div> |
| <div class="ttc" id="classimpala_1_1Status_html"><div class="ttname"><a href="classimpala_1_1Status.html">impala::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="status_8h_source.html#l00081">status.h:81</a></div></div> |
| <div class="ttc" id="namespaceimpala_html_a21b52490ca9415393fd10a8c6cdcf664"><div class="ttname"><a href="namespaceimpala.html#a21b52490ca9415393fd10a8c6cdcf664">impala::space</a></div><div class="ttdeci">string space[]</div><div class="ttdef"><b>Definition:</b> <a href="string-parser-test_8cc_source.html#l00031">string-parser-test.cc:31</a></div></div> |
| <div class="ttc" id="namespaceimpala_html_a28b1df9d4e17cc617547521c05eebc58"><div class="ttname"><a href="namespaceimpala.html#a28b1df9d4e17cc617547521c05eebc58">impala::GetStrErrMsg</a></div><div class="ttdeci">string GetStrErrMsg()</div><div class="ttdef"><b>Definition:</b> <a href="error-util_8cc_source.html#l00030">error-util.cc:30</a></div></div> |
| <div class="ttc" id="classuint64__t_html"><div class="ttname"><a href="classuint64__t.html">uint64_t</a></div></div> |
| <div class="ttc" id="namespaceimpala_html_ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898"><div class="ttname"><a href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">impala::OK</a></div><div class="ttdef"><b>Definition:</b> <a href="webserver_8cc_source.html#l00115">webserver.cc:115</a></div></div> |
| <div class="ttc" id="classimpala_1_1ErrorMsg_html"><div class="ttname"><a href="classimpala_1_1ErrorMsg.html">impala::ErrorMsg</a></div><div class="ttdef"><b>Definition:</b> <a href="error-util_8h_source.html#l00047">error-util.h:47</a></div></div> |
| <div class="ttc" id="names_8h_html"><div class="ttname"><a href="names_8h.html">names.h</a></div></div> |
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