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| </pre><pre class="rust"><code><span class="comment">// Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| </span><span class="kw">use </span><span class="kw">super</span>::logistic_regression_train::Model; |
| |
| <span class="kw">use </span>std::format; |
| <span class="kw">use </span>std::io::{<span class="self">self</span>, BufRead, BufReader, Write}; |
| |
| <span class="kw">use </span>teaclave_types::{FunctionArguments, FunctionRuntime}; |
| |
| <span class="kw">use </span>rusty_machine::learning::logistic_reg::LogisticRegressor; |
| <span class="kw">use </span>rusty_machine::learning::SupModel; |
| <span class="kw">use </span>rusty_machine::linalg; |
| |
| <span class="kw">const </span>MODEL_FILE: <span class="kw-2">&</span>str = <span class="string">"model_file"</span>; |
| <span class="kw">const </span>INPUT_DATA: <span class="kw-2">&</span>str = <span class="string">"data_file"</span>; |
| <span class="kw">const </span>RESULT: <span class="kw-2">&</span>str = <span class="string">"result_file"</span>; |
| |
| <span class="attribute">#[derive(Default)] |
| </span><span class="kw">pub struct </span>LogisticRegressionPredict; |
| |
| <span class="kw">impl </span>LogisticRegressionPredict { |
| <span class="kw">pub const </span>NAME: <span class="kw-2">&</span><span class="lifetime">'static </span>str = <span class="string">"builtin-logistic-regression-predict"</span>; |
| |
| <span class="kw">pub fn </span>new() -> <span class="self">Self </span>{ |
| Default::default() |
| } |
| |
| <span class="kw">pub fn </span>run( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| _arguments: FunctionArguments, |
| runtime: FunctionRuntime, |
| ) -> anyhow::Result<String> { |
| <span class="kw">let </span><span class="kw-2">mut </span>model_json = String::new(); |
| <span class="kw">let </span><span class="kw-2">mut </span>f = runtime.open_input(MODEL_FILE)<span class="question-mark">?</span>; |
| f.read_to_string(<span class="kw-2">&mut </span>model_json)<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span>model: Model = serde_json::from_str(<span class="kw-2">&</span>model_json)<span class="question-mark">?</span>; |
| <span class="kw">let </span>alg = model.alg(); |
| <span class="kw">let </span>para = model.parameters(); |
| <span class="kw">let </span><span class="kw-2">mut </span>lr = LogisticRegressor::new(alg); |
| lr.set_parameters(para); |
| |
| <span class="kw">let </span>feature_size = lr |
| .parameters() |
| .ok_or_else(|| <span class="macro">anyhow::anyhow!</span>(<span class="string">"Model parameter is None"</span>))<span class="question-mark">? |
| </span>.size() |
| - <span class="number">1</span>; |
| |
| <span class="kw">let </span>input = runtime.open_input(INPUT_DATA)<span class="question-mark">?</span>; |
| <span class="kw">let </span>data_matrix = parse_input_data(input, feature_size)<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span>result = lr.predict(<span class="kw-2">&</span>data_matrix)<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>output = runtime.create_output(RESULT)<span class="question-mark">?</span>; |
| <span class="kw">let </span>result_cnt = result.data().len(); |
| <span class="kw">for </span>c <span class="kw">in </span>result.data().iter() { |
| <span class="macro">writeln!</span>(<span class="kw-2">&mut </span>output, <span class="string">"{:.4}"</span>, c)<span class="question-mark">?</span>; |
| } |
| <span class="prelude-val">Ok</span>(<span class="macro">format!</span>(<span class="string">"Predicted {} lines of data."</span>, result_cnt)) |
| } |
| } |
| |
| <span class="kw">fn </span>parse_input_data( |
| input: <span class="kw">impl </span>io::Read, |
| feature_size: usize, |
| ) -> anyhow::Result<linalg::Matrix<f64>> { |
| <span class="kw">let </span><span class="kw-2">mut </span>flattened_data = Vec::new(); |
| <span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">0</span>; |
| |
| <span class="kw">let </span>reader = BufReader::new(input); |
| <span class="kw">for </span>line_result <span class="kw">in </span>reader.lines() { |
| <span class="kw">let </span>line = line_result<span class="question-mark">?</span>; |
| <span class="kw">let </span>trimed_line = line.trim(); |
| <span class="macro">anyhow::ensure!</span>(!trimed_line.is_empty(), <span class="string">"Empty line"</span>); |
| |
| <span class="kw">let </span>v: Vec<f64> = trimed_line |
| .split(<span class="string">','</span>) |
| .map(|x| x.parse::<f64>()) |
| .collect::<std::result::Result<<span class="kw">_</span>, <span class="kw">_</span>>>()<span class="question-mark">?</span>; |
| |
| <span class="macro">anyhow::ensure!</span>( |
| v.len() == feature_size, |
| <span class="string">"Data format error: column len = {}, expected = {}"</span>, |
| v.len(), |
| feature_size |
| ); |
| |
| flattened_data.extend(v); |
| count += <span class="number">1</span>; |
| } |
| |
| <span class="prelude-val">Ok</span>(linalg::Matrix::new(count, feature_size, flattened_data)) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"enclave_unit_test"</span>)] |
| </span><span class="kw">pub mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span>std::path::Path; |
| <span class="kw">use </span>std::untrusted::fs; |
| <span class="kw">use </span>teaclave_crypto::<span class="kw-2">*</span>; |
| <span class="kw">use </span>teaclave_runtime::<span class="kw-2">*</span>; |
| <span class="kw">use </span>teaclave_test_utils::<span class="kw-2">*</span>; |
| <span class="kw">use </span>teaclave_types::<span class="kw-2">*</span>; |
| |
| <span class="kw">pub fn </span>run_tests() -> bool { |
| <span class="macro">run_tests!</span>(test_logistic_regression_predict) |
| } |
| |
| <span class="kw">fn </span>test_logistic_regression_predict() { |
| <span class="kw">let </span>arguments = FunctionArguments::default(); |
| |
| <span class="kw">let </span>base = Path::new(<span class="string">"fixtures/functions/logistic_regression_prediction"</span>); |
| <span class="kw">let </span>model = base.join(<span class="string">"model.txt"</span>); |
| <span class="kw">let </span>plain_input = base.join(<span class="string">"predict_input.txt"</span>); |
| <span class="kw">let </span>plain_output = base.join(<span class="string">"predict_result.txt.out"</span>); |
| <span class="kw">let </span>expected_output = base.join(<span class="string">"expected_result.txt"</span>); |
| |
| <span class="kw">let </span>input_files = StagedFiles::new(<span class="macro">hashmap!</span>( |
| MODEL_FILE => |
| StagedFileInfo::new(<span class="kw-2">&</span>model, TeaclaveFile128Key::random(), FileAuthTag::mock()), |
| INPUT_DATA => |
| StagedFileInfo::new(<span class="kw-2">&</span>plain_input, TeaclaveFile128Key::random(), FileAuthTag::mock()), |
| )); |
| |
| <span class="kw">let </span>output_files = StagedFiles::new(<span class="macro">hashmap!</span>( |
| RESULT => |
| StagedFileInfo::new(<span class="kw-2">&</span>plain_output, TeaclaveFile128Key::random(), FileAuthTag::mock()) |
| )); |
| |
| <span class="kw">let </span>runtime = Box::new(RawIoRuntime::new(input_files, output_files)); |
| |
| <span class="kw">let </span>summary = LogisticRegressionPredict::new() |
| .run(arguments, runtime) |
| .unwrap(); |
| <span class="macro">assert_eq!</span>(summary, <span class="string">"Predicted 5 lines of data."</span>); |
| |
| <span class="kw">let </span>result = fs::read_to_string(<span class="kw-2">&</span>plain_output).unwrap(); |
| <span class="kw">let </span>expected = fs::read_to_string(<span class="kw-2">&</span>expected_output).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span>result[..], <span class="kw-2">&</span>expected[..]); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="teaclave_function" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |