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feat(csharp/src/Drivers): introduce Interop.FlightSql driver (#2214)
- Introduces the Interop.FlightSql driver to use the FlightSQL Go driver from C# - Adds support for testing against multiple FlightSQL environments simultaneously in the configuration (something we may want to carry forward to other projects) - Has a first set of test sample data specific to Dremio, DuckDB and SQLite using https://github.com/voltrondata/SQLFlite as the server(s). - Adds support for the IntervalType in a generic capacity --------- Co-authored-by: David Coe <coedavid@umich.edu> Co-authored-by: Leslie Fung <v-lesliefung@microsoft.com> Co-authored-by: Matt Topol <zotthewizard@gmail.com>
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Dec 4, 2024
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| /* | ||
| * 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. | ||
| */ | ||
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| using System; | ||
| using System.IO; | ||
| using System.Runtime.InteropServices; | ||
| using Apache.Arrow.Adbc.C; | ||
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| namespace Apache.Arrow.Adbc | ||
| { | ||
| /// <summary> | ||
| /// Lightweight class for loading an Interop driver to .NET. | ||
| /// </summary> | ||
| public abstract class AdbcDriverLoader | ||
| { | ||
| readonly string driverShortName; | ||
| readonly string entryPoint; | ||
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| /// <summary> | ||
| /// Initializes the driver loader with the driver name and entry point. | ||
| /// </summary> | ||
| /// <param name="driverShortName">Short driver name, with no extension.</param> | ||
| /// <param name="entryPoint">The entry point. Defaults to `AdbcDriverInit` if not provided.</param> | ||
| /// <exception cref="ArgumentException"></exception> | ||
| protected AdbcDriverLoader(string driverShortName, string entryPoint = "AdbcDriverInit") | ||
| { | ||
| if (string.IsNullOrEmpty(driverShortName)) | ||
| throw new ArgumentException("cannot be null or empty", nameof(driverShortName)); | ||
|
|
||
| if (string.IsNullOrEmpty(entryPoint)) | ||
| throw new ArgumentException("cannot be null or empty", nameof(entryPoint)); | ||
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| this.driverShortName = driverShortName; | ||
| this.entryPoint = entryPoint; | ||
| } | ||
|
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| /// <summary> | ||
| /// Loads the Interop from the current directory using the default name and entry point. | ||
| /// </summary> | ||
| /// <returns>An <see cref="AdbcDriver"/> based on the Flight SQL Go driver.</returns> | ||
| /// <exception cref="FileNotFoundException"></exception> | ||
| protected AdbcDriver FindAndLoadDriver() | ||
| { | ||
| string root = "runtimes"; | ||
| string native = "native"; | ||
| string architecture = RuntimeInformation.OSArchitecture.ToString().ToLower(); | ||
| string fileName = driverShortName; | ||
| string file; | ||
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| // matches extensions in https://github.com/apache/arrow-adbc/blob/main/go/adbc/pkg/Makefile | ||
| if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux)) | ||
| file = Path.Combine(root, $"linux-{architecture}", native, $"{fileName}.so"); | ||
| else if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) | ||
| file = Path.Combine(root, $"win-{architecture}", native, $"{fileName}.dll"); | ||
| else | ||
| file = Path.Combine(root, $"osx-{architecture}", native, $"{fileName}.dylib"); | ||
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| if (File.Exists(file)) | ||
| { | ||
| // get the full path because some .NET versions need it | ||
| file = Path.GetFullPath(file); | ||
| } | ||
| else | ||
| { | ||
| throw new FileNotFoundException($"Could not find {file}"); | ||
| } | ||
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| return LoadDriver(file, entryPoint); | ||
| } | ||
|
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| /// <summary> | ||
| /// Loads the Interop driver from the current directory using the default name and entry point. | ||
| /// </summary> | ||
| /// <param name="file">The file to load.</param> | ||
| /// <param name="entryPoint">The entry point of the file.</param> | ||
| /// <returns>An <see cref="AdbcDriver"/>.</returns> | ||
| public static AdbcDriver LoadDriver(string file, string entryPoint) | ||
| { | ||
| AdbcDriver driver = CAdbcDriverImporter.Load(file, entryPoint); | ||
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| return driver; | ||
| } | ||
| } | ||
| } |
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