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<li class="navelem"><a class="el" href="dir_51d145386ec5f52aa06ebf5e46944abc.html">iceberg</a></li><li class="navelem"><a class="el" href="dir_d29ce3c247234cc8bacd7c637d3a05c6.html">puffin</a></li> </ul>
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<div class="headertitle"><div class="title">puffin_writer.h</div></div>
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<a href="puffin__writer_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * distributed with this work for additional information</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> * &quot;License&quot;); you may not use this file except in compliance</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> * with the License. You may obtain a copy of the License at</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> *</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> *</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> * Unless required by applicable law or agreed to in writing,</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> * software distributed under the License is distributed on an</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> * &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> * KIND, either express or implied. See the License for the</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * specific language governing permissions and limitations</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> * under the License.</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment"> */</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include &lt;cstddef&gt;</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include &lt;cstdint&gt;</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include &lt;memory&gt;</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#include &lt;span&gt;</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#include &lt;unordered_map&gt;</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="preprocessor">#include &quot;<a class="code" href="iceberg__export_8h.html">iceberg/iceberg_export.h</a>&quot;</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="preprocessor">#include &quot;<a class="code" href="file__metadata_8h.html">iceberg/puffin/file_metadata.h</a>&quot;</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="preprocessor">#include &quot;<a class="code" href="result_8h.html">iceberg/result.h</a>&quot;</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="preprocessor">#include &quot;<a class="code" href="type__fwd_8h.html">iceberg/type_fwd.h</a>&quot;</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceiceberg_1_1puffin.html">iceberg::puffin</a> {</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="foldopen" id="foldopen00043" data-start="{" data-end="};">
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"><a class="line" href="classiceberg_1_1puffin_1_1PuffinWriter.html"> 43</a></span><span class="keyword">class </span>ICEBERG_EXPORT <a class="code hl_class" href="classiceberg_1_1puffin_1_1PuffinWriter.html">PuffinWriter</a> {</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"><a class="line" href="classiceberg_1_1puffin_1_1PuffinWriter.html#a561f961c103435576c222e8808a2520d"> 50</a></span> <span class="keyword">static</span> <a class="code hl_typedef" href="namespaceiceberg.html#a9d5594e371beb516b0120e07e69d3af6">Result&lt;std::unique_ptr&lt;PuffinWriter&gt;</a>&gt; <a class="code hl_function" href="classiceberg_1_1puffin_1_1PuffinWriter.html#a561f961c103435576c222e8808a2520d">Make</a>(</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> std::unique_ptr&lt;OutputFile&gt; output_file,</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> std::unordered_map&lt;std::string, std::string&gt; properties = {},</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <a class="code hl_enumeration" href="namespaceiceberg_1_1puffin.html#a370ebcb6e23ad5d7640b3f2a612b06cc">PuffinCompressionCodec</a> default_codec = PuffinCompressionCodec::kNone,</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="keywordtype">bool</span> compress_footer = <span class="keyword">false</span>);</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <a class="code hl_class" href="classiceberg_1_1puffin_1_1PuffinWriter.html">~PuffinWriter</a>();</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"><a class="line" href="classiceberg_1_1puffin_1_1PuffinWriter.html#a8a9c0ca5a24ffe879971f7e1d0af311c"> 59</a></span> <a class="code hl_typedef" href="namespaceiceberg.html#a9d5594e371beb516b0120e07e69d3af6">Result&lt;BlobMetadata&gt;</a> <a class="code hl_function" href="classiceberg_1_1puffin_1_1PuffinWriter.html#a8a9c0ca5a24ffe879971f7e1d0af311c">Write</a>(<span class="keyword">const</span> <a class="code hl_struct" href="structiceberg_1_1puffin_1_1Blob.html">Blob</a>&amp; blob);</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"><a class="line" href="classiceberg_1_1puffin_1_1PuffinWriter.html#a675b3c9e99a5f8fcb041d9d7d5a97783"> 62</a></span> Status <a class="code hl_function" href="classiceberg_1_1puffin_1_1PuffinWriter.html#a675b3c9e99a5f8fcb041d9d7d5a97783">Finish</a>();</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"><a class="line" href="classiceberg_1_1puffin_1_1PuffinWriter.html#acc033e081ca49e0fe607da2ecbdd9bf8"> 65</a></span> Status <a class="code hl_function" href="classiceberg_1_1puffin_1_1PuffinWriter.html#acc033e081ca49e0fe607da2ecbdd9bf8">Close</a>();</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> </div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"><a class="line" href="classiceberg_1_1puffin_1_1PuffinWriter.html#ae9787f62b3fe12744bf4c3af0b455cc2"> 68</a></span> <span class="keyword">const</span> std::vector&lt;BlobMetadata&gt;&amp; <a class="code hl_function" href="classiceberg_1_1puffin_1_1PuffinWriter.html#ae9787f62b3fe12744bf4c3af0b455cc2">written_blobs_metadata</a>() <span class="keyword">const</span>;</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> </div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"><a class="line" href="classiceberg_1_1puffin_1_1PuffinWriter.html#a103d9ce689b354957b6f505bdd086f2d"> 71</a></span> <a class="code hl_typedef" href="namespaceiceberg.html#a9d5594e371beb516b0120e07e69d3af6">Result&lt;int64_t&gt;</a> <a class="code hl_function" href="classiceberg_1_1puffin_1_1PuffinWriter.html#a103d9ce689b354957b6f505bdd086f2d">FooterSize</a>() <span class="keyword">const</span>;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"><a class="line" href="classiceberg_1_1puffin_1_1PuffinWriter.html#aa23fdf8456023da0bf4b1042b1883b42"> 74</a></span> <a class="code hl_typedef" href="namespaceiceberg.html#a9d5594e371beb516b0120e07e69d3af6">Result&lt;int64_t&gt;</a> <a class="code hl_function" href="classiceberg_1_1puffin_1_1PuffinWriter.html#aa23fdf8456023da0bf4b1042b1883b42">FileSize</a>() <span class="keyword">const</span>;</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <a class="code hl_class" href="classiceberg_1_1puffin_1_1PuffinWriter.html">PuffinWriter</a>(std::unique_ptr&lt;PositionOutputStream&gt; stream,</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> std::unordered_map&lt;std::string, std::string&gt; properties,</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <a class="code hl_enumeration" href="namespaceiceberg_1_1puffin.html#a370ebcb6e23ad5d7640b3f2a612b06cc">PuffinCompressionCodec</a> default_codec, <span class="keywordtype">bool</span> compress_footer);</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> Status WriteBytes(std::span&lt;const std::byte&gt; data);</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> Status WriteHeader();</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> Status WriteMagic();</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> std::unique_ptr&lt;PositionOutputStream&gt; stream_;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> std::unordered_map&lt;std::string, std::string&gt; properties_;</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">const</span> <a class="code hl_enumeration" href="namespaceiceberg_1_1puffin.html#a370ebcb6e23ad5d7640b3f2a612b06cc">PuffinCompressionCodec</a> default_codec_;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> compress_footer_;</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> std::vector&lt;BlobMetadata&gt; written_blobs_metadata_;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="keywordtype">bool</span> header_written_ = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordtype">bool</span> footer_written_ = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keywordtype">bool</span> finished_ = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> int64_t footer_size_ = -1;</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> int64_t file_size_ = -1;</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span>};</div>
</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> </div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span>} <span class="comment">// namespace iceberg::puffin</span></div>
<div class="ttc" id="aclassiceberg_1_1puffin_1_1PuffinWriter_html"><div class="ttname"><a href="classiceberg_1_1puffin_1_1PuffinWriter.html">iceberg::puffin::PuffinWriter</a></div><div class="ttdoc">Writer for Puffin files.</div><div class="ttdef"><b>Definition</b> puffin_writer.h:43</div></div>
<div class="ttc" id="aclassiceberg_1_1puffin_1_1PuffinWriter_html_a103d9ce689b354957b6f505bdd086f2d"><div class="ttname"><a href="classiceberg_1_1puffin_1_1PuffinWriter.html#a103d9ce689b354957b6f505bdd086f2d">iceberg::puffin::PuffinWriter::FooterSize</a></div><div class="ttdeci">Result&lt; int64_t &gt; FooterSize() const</div><div class="ttdoc">Get the footer size. Returns error if the footer has not been written.</div></div>
<div class="ttc" id="aclassiceberg_1_1puffin_1_1PuffinWriter_html_a561f961c103435576c222e8808a2520d"><div class="ttname"><a href="classiceberg_1_1puffin_1_1PuffinWriter.html#a561f961c103435576c222e8808a2520d">iceberg::puffin::PuffinWriter::Make</a></div><div class="ttdeci">static Result&lt; std::unique_ptr&lt; PuffinWriter &gt; &gt; Make(std::unique_ptr&lt; OutputFile &gt; output_file, std::unordered_map&lt; std::string, std::string &gt; properties={}, PuffinCompressionCodec default_codec=PuffinCompressionCodec::kNone, bool compress_footer=false)</div><div class="ttdoc">Create a PuffinWriter for the given output file.</div></div>
<div class="ttc" id="aclassiceberg_1_1puffin_1_1PuffinWriter_html_a675b3c9e99a5f8fcb041d9d7d5a97783"><div class="ttname"><a href="classiceberg_1_1puffin_1_1PuffinWriter.html#a675b3c9e99a5f8fcb041d9d7d5a97783">iceberg::puffin::PuffinWriter::Finish</a></div><div class="ttdeci">Status Finish()</div><div class="ttdoc">Finalize the file by writing the footer and closing the stream.</div></div>
<div class="ttc" id="aclassiceberg_1_1puffin_1_1PuffinWriter_html_a8a9c0ca5a24ffe879971f7e1d0af311c"><div class="ttname"><a href="classiceberg_1_1puffin_1_1PuffinWriter.html#a8a9c0ca5a24ffe879971f7e1d0af311c">iceberg::puffin::PuffinWriter::Write</a></div><div class="ttdeci">Result&lt; BlobMetadata &gt; Write(const Blob &amp;blob)</div><div class="ttdoc">Write a blob and return its metadata.</div></div>
<div class="ttc" id="aclassiceberg_1_1puffin_1_1PuffinWriter_html_aa23fdf8456023da0bf4b1042b1883b42"><div class="ttname"><a href="classiceberg_1_1puffin_1_1PuffinWriter.html#aa23fdf8456023da0bf4b1042b1883b42">iceberg::puffin::PuffinWriter::FileSize</a></div><div class="ttdeci">Result&lt; int64_t &gt; FileSize() const</div><div class="ttdoc">Get the total file size. Returns error if Finish() has not succeeded.</div></div>
<div class="ttc" id="aclassiceberg_1_1puffin_1_1PuffinWriter_html_acc033e081ca49e0fe607da2ecbdd9bf8"><div class="ttname"><a href="classiceberg_1_1puffin_1_1PuffinWriter.html#acc033e081ca49e0fe607da2ecbdd9bf8">iceberg::puffin::PuffinWriter::Close</a></div><div class="ttdeci">Status Close()</div><div class="ttdoc">Close the writer, finalizing the file if needed.</div></div>
<div class="ttc" id="aclassiceberg_1_1puffin_1_1PuffinWriter_html_ae9787f62b3fe12744bf4c3af0b455cc2"><div class="ttname"><a href="classiceberg_1_1puffin_1_1PuffinWriter.html#ae9787f62b3fe12744bf4c3af0b455cc2">iceberg::puffin::PuffinWriter::written_blobs_metadata</a></div><div class="ttdeci">const std::vector&lt; BlobMetadata &gt; &amp; written_blobs_metadata() const</div><div class="ttdoc">Get metadata for all blobs written so far.</div></div>
<div class="ttc" id="afile__metadata_8h_html"><div class="ttname"><a href="file__metadata_8h.html">file_metadata.h</a></div></div>
<div class="ttc" id="aiceberg__export_8h_html"><div class="ttname"><a href="iceberg__export_8h.html">iceberg_export.h</a></div><div class="ttdoc">Define symbol visibility macros for core Iceberg APIs.</div></div>
<div class="ttc" id="anamespaceiceberg_1_1puffin_html"><div class="ttname"><a href="namespaceiceberg_1_1puffin.html">iceberg::puffin</a></div><div class="ttdoc">Puffin file metadata, reader, and writer APIs.</div><div class="ttdef"><b>Definition</b> file_metadata.h:35</div></div>
<div class="ttc" id="anamespaceiceberg_1_1puffin_html_a370ebcb6e23ad5d7640b3f2a612b06cc"><div class="ttname"><a href="namespaceiceberg_1_1puffin.html#a370ebcb6e23ad5d7640b3f2a612b06cc">iceberg::puffin::PuffinCompressionCodec</a></div><div class="ttdeci">PuffinCompressionCodec</div><div class="ttdoc">Compression codecs supported by Puffin files.</div><div class="ttdef"><b>Definition</b> file_metadata.h:38</div></div>
<div class="ttc" id="anamespaceiceberg_html_a9d5594e371beb516b0120e07e69d3af6"><div class="ttname"><a href="namespaceiceberg.html#a9d5594e371beb516b0120e07e69d3af6">iceberg::Result</a></div><div class="ttdeci">std::expected&lt; T, E &gt; Result</div><div class="ttdoc">Result alias.</div><div class="ttdef"><b>Definition</b> result.h:88</div></div>
<div class="ttc" id="aresult_8h_html"><div class="ttname"><a href="result_8h.html">result.h</a></div><div class="ttdoc">Define Result, Status, and error helpers.</div></div>
<div class="ttc" id="astructiceberg_1_1puffin_1_1Blob_html"><div class="ttname"><a href="structiceberg_1_1puffin_1_1Blob.html">iceberg::puffin::Blob</a></div><div class="ttdoc">A blob in a Puffin file.</div><div class="ttdef"><b>Definition</b> file_metadata.h:70</div></div>
<div class="ttc" id="atype__fwd_8h_html"><div class="ttname"><a href="type__fwd_8h.html">type_fwd.h</a></div></div>
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