-
Notifications
You must be signed in to change notification settings - Fork 46
/
Exporter.cs
430 lines (353 loc) · 13.5 KB
/
Exporter.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
// <copyright file="Exporter.cs" company="Microsoft Corporation">
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License (MIT). See LICENSE in the repo root for license information.
// </copyright>
using System.IO;
using System.Threading;
using ICSharpCode.SharpZipLib.Core;
using ICSharpCode.SharpZipLib.Zip;
using Microsoft.Health.Fhir.SpecManager.Language;
namespace Microsoft.Health.Fhir.SpecManager.Manager;
/// <summary>
/// Class that performs exports by linking FhirVersionInfo to Lanugages for output.
/// </summary>
public abstract class Exporter
{
/// <summary>The random.</summary>
private static Random _rand = new();
/// <summary>Exports.</summary>
/// <exception cref="ArgumentNullException">Thrown when one or more required arguments are null.</exception>
/// <param name="sourceFhirInfo"> Information describing the source FHIR version information.</param>
/// <param name="sourceCapStatementFilter">Capability Statment to use as a filter.</param>
/// <param name="exportLanguage"> The export language.</param>
/// <param name="options"> Options for controlling the operation.</param>
/// <param name="outputPath"> The output filename.</param>
/// <param name="isPartOfBatch"> True if is part of batch, false if not.</param>
/// <returns>A List of files written by the export operation.</returns>
public static List<string> Export(
FhirVersionInfo sourceFhirInfo,
FhirCapabiltyStatement sourceCapStatementFilter,
ILanguage exportLanguage,
ExporterOptions options,
string outputPath,
bool isPartOfBatch)
{
List<string> filesWritten = new();
if (sourceFhirInfo == null)
{
throw new ArgumentNullException(nameof(sourceFhirInfo));
}
if (exportLanguage == null)
{
throw new ArgumentNullException(nameof(exportLanguage));
}
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
if (string.IsNullOrEmpty(outputPath))
{
throw new ArgumentNullException(nameof(outputPath));
}
// check for rooted vs relative
if (!Path.IsPathRooted(outputPath))
{
outputPath = Path.Combine(Directory.GetCurrentDirectory(), outputPath);
}
// resolve directory oddness (e.g., follow ..'s, etc.)
outputPath = Path.GetFullPath(outputPath);
string tempDir;
if (Path.HasExtension(outputPath))
{
tempDir = Path.Combine(Path.GetDirectoryName(outputPath), $"{exportLanguage.LanguageName}-{DateTime.Now.Ticks}");
}
else
{
tempDir = Path.Combine(outputPath, $"{exportLanguage.LanguageName}-{DateTime.Now.Ticks}");
}
if (!Directory.Exists(tempDir))
{
Directory.CreateDirectory(tempDir);
}
bool copyPrimitives = false;
if (exportLanguage.RequiredExportClassTypes.Contains(ExporterOptions.FhirExportClassType.PrimitiveType) ||
options.OptionalClassTypesToExport.Contains(ExporterOptions.FhirExportClassType.PrimitiveType))
{
copyPrimitives = true;
}
bool copyComplexTypes = false;
if (exportLanguage.RequiredExportClassTypes.Contains(ExporterOptions.FhirExportClassType.ComplexType) ||
options.OptionalClassTypesToExport.Contains(ExporterOptions.FhirExportClassType.ComplexType))
{
copyComplexTypes = true;
}
bool copyResources = false;
if (exportLanguage.RequiredExportClassTypes.Contains(ExporterOptions.FhirExportClassType.Resource) ||
options.OptionalClassTypesToExport.Contains(ExporterOptions.FhirExportClassType.Resource))
{
copyResources = true;
}
bool copyProfiles = false;
if (exportLanguage.RequiredExportClassTypes.Contains(ExporterOptions.FhirExportClassType.Profile) ||
options.OptionalClassTypesToExport.Contains(ExporterOptions.FhirExportClassType.Profile))
{
copyProfiles = true;
}
// create a copy of the FHIR information for use in this export
FhirVersionInfo info = new(
sourceFhirInfo,
new()
{
PrimitiveTypeMap = exportLanguage.FhirPrimitiveTypeMap,
ExportList = options.ExportList,
CopyPrimitives = copyPrimitives,
CopyComplexTypes = copyComplexTypes,
CopyResources = copyResources,
CopyExtensions = true,
CopyProfiles = copyProfiles,
ExtensionUrls = options.ExtensionUrls,
ExtensionElementPaths = options.ExtensionElementPaths,
CapStatmentFilter = sourceCapStatementFilter,
IncludeExperimental = options.IncludeExperimental,
}, options.ResolveExternal);
FhirCapabiltyStatement capFilter = null;
if (sourceCapStatementFilter != null)
{
capFilter = new FhirCapabiltyStatement(sourceCapStatementFilter);
}
// update language input files depending on the version of FHIR we are using
options.SupportFiles?.TryLoad(info.FhirSequence);
// perform our export
exportLanguage.Export(
info,
capFilter,
options,
tempDir);
string[] exportedFiles = Directory.GetFiles(tempDir, string.Empty, SearchOption.AllDirectories);
string requestedExtension = string.Empty;
if (Path.HasExtension(outputPath))
{
requestedExtension = Path.GetExtension(outputPath).ToUpperInvariant();
}
if (requestedExtension == ".ZIP")
{
if (File.Exists(outputPath))
{
File.Delete(outputPath);
}
// zip the files in the directory for downloead/output
CreateZip(outputPath, tempDir);
// tell the caller the file we wrote
filesWritten.Add(outputPath);
// clean up
DeleteDirectory(tempDir);
Console.WriteLine($"Wrote {filesWritten.Count} files to {outputPath}");
return filesWritten;
}
if ((exportedFiles.Length == 1) &&
(!string.IsNullOrEmpty(requestedExtension)))
{
if (File.Exists(outputPath))
{
File.Delete(outputPath);
}
File.Move(exportedFiles[0], outputPath);
filesWritten.Add(outputPath);
DeleteDirectory(tempDir);
Console.WriteLine($"Wrote {filesWritten.Count} files to {outputPath}");
return filesWritten;
}
string langVersionString;
if (info.IsDevBuild)
{
langVersionString = $"local_{exportLanguage.LanguageName}_{FhirPackageCommon.RForSequence(info.FhirSequence)}_{info.ReleaseName}";
}
else
{
langVersionString = $"{exportLanguage.LanguageName}_{FhirPackageCommon.RForSequence(info.FhirSequence)}";
}
if (exportedFiles.Length == 1)
{
string filename = Path.Combine(outputPath, langVersionString);
if (string.IsNullOrEmpty(exportLanguage.SingleFileExportExtension))
{
filename = Path.ChangeExtension(filename, Path.GetExtension(exportedFiles[0]));
}
else
{
filename = Path.ChangeExtension(filename, exportLanguage.SingleFileExportExtension);
}
if (File.Exists(filename))
{
File.Delete(filename);
}
File.Move(exportedFiles[0], filename);
filesWritten.Add(filename);
DeleteDirectory(tempDir);
Console.WriteLine($"Wrote {filesWritten.Count} files to {outputPath}");
return filesWritten;
}
string path = outputPath;
if (isPartOfBatch)
{
path = Path.Combine(outputPath, langVersionString);
}
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
int duplicateLen = tempDir.Length + 1;
foreach (string file in exportedFiles)
{
string exportName = Path.Combine(path, file.Substring(duplicateLen));
if (!TryMoveFile(file, exportName))
{
throw new Exception($"Failed to move file {file} into the requested export location!");
}
filesWritten.Add(exportName);
}
DeleteDirectory(tempDir);
Console.WriteLine($"Wrote {filesWritten.Count} files to {outputPath}");
return filesWritten;
}
/// <summary>Attempts to move file.</summary>
/// <param name="source"> Source for the.</param>
/// <param name="dest"> Destination for the.</param>
/// <param name="maxRetries">(Optional) The maximum retries.</param>
/// <returns>True if it succeeds, false if it fails.</returns>
private static bool TryMoveFile(
string source,
string dest,
int maxRetries = 3)
{
bool success = false;
for (int i = 0; (i < maxRetries) && (!success); i++)
{
try
{
if (File.Exists(dest))
{
File.Delete(dest);
}
if (!Directory.Exists(Path.GetDirectoryName(dest)))
{
Directory.CreateDirectory(Path.GetDirectoryName(dest));
}
File.Move(source, dest);
success = true;
}
catch (IOException)
{
switch (i)
{
case 0:
Thread.Sleep(0);
break;
default:
Thread.Sleep(_rand.Next(0, 1000));
break;
}
}
}
return success;
}
/// <summary>Deletes the directory described by dir.</summary>
/// <param name="dir">The dir.</param>
private static void DeleteDirectory(string dir)
{
try
{
foreach (string subDir in Directory.GetDirectories(dir))
{
foreach (string filename in Directory.GetFiles(subDir))
{
File.Delete(filename);
}
DeleteDirectory(subDir);
}
Directory.Delete(dir);
}
catch (IOException)
{
// ignore
}
}
/// <summary>Ensures that path ends in separator.</summary>
/// <param name="path">Full pathname of the file.</param>
/// <returns>A string.</returns>
private static string EnsurePathEndsInSeparator(string path)
{
if (string.IsNullOrEmpty(path))
{
return path;
}
if (path[path.Length - 1] == Path.DirectorySeparatorChar)
{
return path;
}
if (path[path.Length - 1] == Path.AltDirectorySeparatorChar)
{
return path;
}
if (path.Contains(Path.DirectorySeparatorChar))
{
return $"{path}{Path.DirectorySeparatorChar}";
}
return $"{path}{Path.AltDirectorySeparatorChar}";
}
/// <summary>Creates a zip file from a directory.</summary>
/// <param name="outputFilename">Filename of the output file.</param>
/// <param name="sourceFolder"> Pathname of the source folder.</param>
private static void CreateZip(
string outputFilename,
string sourceFolder)
{
string dir = EnsurePathEndsInSeparator(sourceFolder);
int folderOffset = dir.Length;
using (FileStream fs = File.Create(outputFilename))
using (var zipStream = new ZipOutputStream(fs))
{
// 0-9, 9 being the highest level of compression
zipStream.SetLevel(3);
CompressFolder(dir, zipStream, folderOffset);
}
}
/// <summary>Compress folder.</summary>
/// <param name="sourceFolder">Pathname of the source folder.</param>
/// <param name="zipStream"> The zip stream.</param>
/// <param name="folderOffset">The folder offset.</param>
private static void CompressFolder(
string sourceFolder,
ZipOutputStream zipStream,
int folderOffset)
{
string[] files = Directory.GetFiles(sourceFolder);
foreach (string filename in files)
{
FileInfo fi = new FileInfo(filename);
// Make the name in zip based on the folder
string entryName = filename.Substring(folderOffset);
// Remove drive from name and fix slash direction
entryName = ZipEntry.CleanName(entryName);
ZipEntry newEntry = new ZipEntry(entryName)
{
DateTime = fi.LastWriteTime,
Size = fi.Length,
};
zipStream.PutNextEntry(newEntry);
// Zip the file in buffered chunks
byte[] buffer = new byte[4096];
using (FileStream fsInput = File.OpenRead(filename))
{
StreamUtils.Copy(fsInput, zipStream, buffer);
}
zipStream.CloseEntry();
}
// Recursively call CompressFolder on all folders in path
string[] folders = Directory.GetDirectories(sourceFolder);
foreach (string folder in folders)
{
CompressFolder(folder, zipStream, folderOffset);
}
}
}