lidavidm commented on code in PR #2401: URL: https://github.com/apache/arrow-adbc/pull/2401#discussion_r1930021997
########## java/driver/jni/src/main/java/org/apache/arrow/adbc/driver/jni/impl/JniLoader.java: ########## @@ -0,0 +1,121 @@ +/* + * 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. + */ + +package org.apache.arrow.adbc.driver.jni.impl; + +import java.io.File; +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.InputStream; +import java.nio.file.Files; +import java.nio.file.StandardCopyOption; +import java.util.Locale; +import java.util.Map; +import org.apache.arrow.adbc.core.AdbcException; +import org.apache.arrow.util.Preconditions; + +public enum JniLoader { + INSTANCE; + + JniLoader() { + final String libraryName = "adbc_driver_jni"; + String libraryToLoad = + libraryName + "/" + getNormalizedArch() + "/" + System.mapLibraryName(libraryName); + + try { + InputStream is = JniLoader.class.getClassLoader().getResourceAsStream(libraryToLoad); + if (is == null) { + throw new FileNotFoundException(libraryToLoad); + } + File temp = + File.createTempFile("adbc-jni-", ".tmp", new File(System.getProperty("java.io.tmpdir"))); + temp.deleteOnExit(); + + try (is) { + Files.copy(is, temp.toPath(), StandardCopyOption.REPLACE_EXISTING); + } + Runtime.getRuntime().load(temp.getAbsolutePath()); + } catch (IOException e) { + throw new IllegalStateException("Error loading native library: " + e); + } + } + + private String getNormalizedArch() { + String arch = System.getProperty("os.arch").toLowerCase(Locale.US); + switch (arch) { + case "amd64": + return "x86_64"; + case "aarch64": + return "aarch_64"; + default: + throw new RuntimeException("ADBC JNI driver not supported on architecture " + arch); + } + } + + public NativeHandle openDatabase(Map<String, String> parameters) { + String[] nativeParameters = new String[parameters.size() * 2]; + int index = 0; + for (Map.Entry<String, String> parameter : parameters.entrySet()) { + nativeParameters[index++] = parameter.getKey(); + nativeParameters[index++] = parameter.getValue(); + } + try { + return NativeAdbc.openDatabase(1001000, nativeParameters); + } catch (NativeAdbcException e) { + // TODO: convert to AdbcException + throw new RuntimeException(e); + } + } + + public NativeHandle openConnection(NativeHandle database) { + Preconditions.checkArgument(database.getHandleType() == NativeHandleType.DATABASE); Review Comment: Changed to specific subclasses -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
