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19 package org.eclipse.aether.transport.apache;
20
21 import java.io.IOException;
22 import java.io.InputStream;
23 import java.io.InterruptedIOException;
24 import java.io.OutputStream;
25 import java.io.UncheckedIOException;
26 import java.net.URI;
27 import java.net.URISyntaxException;
28 import java.nio.charset.Charset;
29 import java.nio.file.Files;
30 import java.nio.file.Path;
31 import java.nio.file.StandardCopyOption;
32 import java.util.Date;
33 import java.util.List;
34 import java.util.Map;
35 import java.util.Set;
36 import java.util.function.Function;
37 import java.util.regex.Matcher;
38
39 import org.apache.http.Header;
40 import org.apache.http.HttpEntity;
41 import org.apache.http.HttpEntityEnclosingRequest;
42 import org.apache.http.HttpHeaders;
43 import org.apache.http.HttpHost;
44 import org.apache.http.HttpResponse;
45 import org.apache.http.HttpStatus;
46 import org.apache.http.auth.AuthSchemeProvider;
47 import org.apache.http.auth.AuthScope;
48 import org.apache.http.client.AuthCache;
49 import org.apache.http.client.CredentialsProvider;
50 import org.apache.http.client.HttpRequestRetryHandler;
51 import org.apache.http.client.HttpResponseException;
52 import org.apache.http.client.ServiceUnavailableRetryStrategy;
53 import org.apache.http.client.config.AuthSchemes;
54 import org.apache.http.client.config.CookieSpecs;
55 import org.apache.http.client.config.RequestConfig;
56 import org.apache.http.client.methods.CloseableHttpResponse;
57 import org.apache.http.client.methods.HttpGet;
58 import org.apache.http.client.methods.HttpHead;
59 import org.apache.http.client.methods.HttpOptions;
60 import org.apache.http.client.methods.HttpPut;
61 import org.apache.http.client.methods.HttpUriRequest;
62 import org.apache.http.client.utils.DateUtils;
63 import org.apache.http.client.utils.URIUtils;
64 import org.apache.http.config.Registry;
65 import org.apache.http.config.RegistryBuilder;
66 import org.apache.http.config.SocketConfig;
67 import org.apache.http.entity.AbstractHttpEntity;
68 import org.apache.http.entity.ByteArrayEntity;
69 import org.apache.http.impl.NoConnectionReuseStrategy;
70 import org.apache.http.impl.auth.BasicScheme;
71 import org.apache.http.impl.auth.BasicSchemeFactory;
72 import org.apache.http.impl.auth.DigestSchemeFactory;
73 import org.apache.http.impl.auth.KerberosSchemeFactory;
74 import org.apache.http.impl.auth.NTLMSchemeFactory;
75 import org.apache.http.impl.auth.SPNegoSchemeFactory;
76 import org.apache.http.impl.client.BasicAuthCache;
77 import org.apache.http.impl.client.CloseableHttpClient;
78 import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;
79 import org.apache.http.impl.client.HttpClientBuilder;
80 import org.apache.http.impl.client.LaxRedirectStrategy;
81 import org.apache.http.impl.client.StandardHttpRequestRetryHandler;
82 import org.apache.http.protocol.HttpContext;
83 import org.apache.http.util.EntityUtils;
84 import org.eclipse.aether.RepositorySystemSession;
85 import org.eclipse.aether.repository.AuthenticationContext;
86 import org.eclipse.aether.repository.Proxy;
87 import org.eclipse.aether.repository.RemoteRepository;
88 import org.eclipse.aether.spi.connector.transport.AbstractTransporter;
89 import org.eclipse.aether.spi.connector.transport.GetTask;
90 import org.eclipse.aether.spi.connector.transport.PeekTask;
91 import org.eclipse.aether.spi.connector.transport.PutTask;
92 import org.eclipse.aether.spi.connector.transport.TransportTask;
93 import org.eclipse.aether.spi.connector.transport.http.ChecksumExtractor;
94 import org.eclipse.aether.spi.connector.transport.http.HttpTransporter;
95 import org.eclipse.aether.spi.connector.transport.http.HttpTransporterException;
96 import org.eclipse.aether.spi.io.PathProcessor;
97 import org.eclipse.aether.transfer.NoTransporterException;
98 import org.eclipse.aether.transfer.TransferCancelledException;
99 import org.eclipse.aether.util.ConfigUtils;
100 import org.eclipse.aether.util.StringDigestUtil;
101 import org.eclipse.aether.util.connector.transport.http.HttpTransporterUtils;
102 import org.slf4j.Logger;
103 import org.slf4j.LoggerFactory;
104
105 import static java.util.Objects.requireNonNull;
106 import static org.eclipse.aether.spi.connector.transport.http.HttpConstants.CONTENT_RANGE_PATTERN;
107 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.CONFIG_PROP_FOLLOW_REDIRECTS;
108 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.CONFIG_PROP_HTTP_RETRY_HANDLER_NAME;
109 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.CONFIG_PROP_HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED;
110 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.CONFIG_PROP_MAX_REDIRECTS;
111 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.CONFIG_PROP_USE_SYSTEM_PROPERTIES;
112 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.DEFAULT_FOLLOW_REDIRECTS;
113 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.DEFAULT_HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED;
114 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.DEFAULT_MAX_REDIRECTS;
115 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.DEFAULT_USE_SYSTEM_PROPERTIES;
116 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.HTTP_RETRY_HANDLER_NAME_DEFAULT;
117 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.HTTP_RETRY_HANDLER_NAME_STANDARD;
118
119
120
121
122 final class ApacheTransporter extends AbstractTransporter implements HttpTransporter {
123 private static final Logger LOGGER = LoggerFactory.getLogger(ApacheTransporter.class);
124
125 private final ChecksumExtractor checksumExtractor;
126
127 private final PathProcessor pathProcessor;
128
129 private final AuthenticationContext repoAuthContext;
130
131 private final AuthenticationContext proxyAuthContext;
132
133 private final URI baseUri;
134
135 private final HttpHost server;
136
137 private final HttpHost proxy;
138
139 private final CloseableHttpClient client;
140
141 private final Map<?, ?> headers;
142
143 private final LocalState state;
144
145 private final boolean preemptiveAuth;
146
147 private final boolean preemptivePutAuth;
148
149 private final boolean supportWebDav;
150
151 private final AuthCache authCache;
152
153 @SuppressWarnings("checkstyle:methodlength")
154 ApacheTransporter(
155 RemoteRepository repository,
156 RepositorySystemSession session,
157 ChecksumExtractor checksumExtractor,
158 PathProcessor pathProcessor)
159 throws NoTransporterException {
160 this.checksumExtractor = checksumExtractor;
161 this.pathProcessor = pathProcessor;
162 try {
163 this.baseUri = new URI(repository.getUrl()).parseServerAuthority();
164 if (baseUri.isOpaque()) {
165 throw new URISyntaxException(repository.getUrl(), "URL must not be opaque");
166 }
167 this.server = URIUtils.extractHost(baseUri);
168 if (server == null) {
169 throw new URISyntaxException(repository.getUrl(), "URL lacks host name");
170 }
171 } catch (URISyntaxException e) {
172 throw new NoTransporterException(repository, e.getMessage(), e);
173 }
174 this.proxy = toHost(repository.getProxy());
175
176 this.repoAuthContext = AuthenticationContext.forRepository(session, repository);
177 this.proxyAuthContext = AuthenticationContext.forProxy(session, repository);
178
179 String httpsSecurityMode = HttpTransporterUtils.getHttpsSecurityMode(session, repository);
180 final int connectionMaxTtlSeconds = HttpTransporterUtils.getHttpConnectionMaxTtlSeconds(session, repository);
181 final int maxConnectionsPerRoute = HttpTransporterUtils.getHttpMaxConnectionsPerRoute(session, repository);
182 this.state = new LocalState(
183 session,
184 repository,
185 new ConnMgrConfig(
186 session, repoAuthContext, httpsSecurityMode, connectionMaxTtlSeconds, maxConnectionsPerRoute));
187
188 this.headers = HttpTransporterUtils.getHttpHeaders(session, repository);
189 this.preemptiveAuth = HttpTransporterUtils.isHttpPreemptiveAuth(session, repository);
190 this.preemptivePutAuth = HttpTransporterUtils.isHttpPreemptivePutAuth(session, repository);
191 this.supportWebDav = HttpTransporterUtils.isHttpSupportWebDav(session, repository);
192 int connectTimeout = HttpTransporterUtils.getHttpConnectTimeout(session, repository);
193 int requestTimeout = HttpTransporterUtils.getHttpRequestTimeout(session, repository);
194 int retryCount = HttpTransporterUtils.getHttpRetryHandlerCount(session, repository);
195 long retryInterval = HttpTransporterUtils.getHttpRetryHandlerInterval(session, repository);
196 long retryIntervalMax = HttpTransporterUtils.getHttpRetryHandlerIntervalMax(session, repository);
197 String retryHandlerName = ConfigUtils.getString(
198 session,
199 HTTP_RETRY_HANDLER_NAME_STANDARD,
200 CONFIG_PROP_HTTP_RETRY_HANDLER_NAME + "." + repository.getId(),
201 CONFIG_PROP_HTTP_RETRY_HANDLER_NAME);
202 boolean retryHandlerRequestSentEnabled = ConfigUtils.getBoolean(
203 session,
204 DEFAULT_HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED,
205 CONFIG_PROP_HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED + "." + repository.getId(),
206 CONFIG_PROP_HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED);
207 int maxRedirects = ConfigUtils.getInteger(
208 session,
209 DEFAULT_MAX_REDIRECTS,
210 CONFIG_PROP_MAX_REDIRECTS + "." + repository.getId(),
211 CONFIG_PROP_MAX_REDIRECTS);
212 boolean followRedirects = ConfigUtils.getBoolean(
213 session,
214 DEFAULT_FOLLOW_REDIRECTS,
215 CONFIG_PROP_FOLLOW_REDIRECTS + "." + repository.getId(),
216 CONFIG_PROP_FOLLOW_REDIRECTS);
217 String userAgent = HttpTransporterUtils.getUserAgent(session, repository);
218
219 Charset credentialsCharset = HttpTransporterUtils.getHttpCredentialsEncoding(session, repository);
220 Registry<AuthSchemeProvider> authSchemeRegistry = RegistryBuilder.<AuthSchemeProvider>create()
221 .register(AuthSchemes.BASIC, new BasicSchemeFactory(credentialsCharset))
222 .register(AuthSchemes.DIGEST, new DigestSchemeFactory(credentialsCharset))
223 .register(AuthSchemes.NTLM, new NTLMSchemeFactory())
224 .register(AuthSchemes.SPNEGO, new SPNegoSchemeFactory())
225 .register(AuthSchemes.KERBEROS, new KerberosSchemeFactory())
226 .build();
227 SocketConfig socketConfig =
228
229 SocketConfig.custom().setSoTimeout(requestTimeout).build();
230 RequestConfig requestConfig = RequestConfig.custom()
231 .setMaxRedirects(maxRedirects)
232 .setRedirectsEnabled(followRedirects)
233 .setRelativeRedirectsAllowed(followRedirects)
234
235 .setSocketTimeout(requestTimeout)
236
237 .setConnectTimeout(connectTimeout)
238
239 .setConnectionRequestTimeout(connectTimeout)
240 .setLocalAddress(HttpTransporterUtils.getHttpLocalAddress(session, repository)
241 .orElse(null))
242 .setCookieSpec(CookieSpecs.STANDARD)
243 .build();
244
245 HttpRequestRetryHandler retryHandler;
246 if (HTTP_RETRY_HANDLER_NAME_STANDARD.equals(retryHandlerName)) {
247 retryHandler = new StandardHttpRequestRetryHandler(retryCount, retryHandlerRequestSentEnabled);
248 } else if (HTTP_RETRY_HANDLER_NAME_DEFAULT.equals(retryHandlerName)) {
249 retryHandler = new DefaultHttpRequestRetryHandler(retryCount, retryHandlerRequestSentEnabled);
250 } else {
251 throw new IllegalArgumentException(
252 "Unsupported parameter " + CONFIG_PROP_HTTP_RETRY_HANDLER_NAME + " value: " + retryHandlerName);
253 }
254 ServiceUnavailableRetryStrategy serviceUnavailableRetryStrategy = new ResolverServiceUnavailableRetryStrategy(
255 retryCount,
256 retryInterval,
257 retryIntervalMax,
258 HttpTransporterUtils.getHttpServiceUnavailableCodes(session, repository));
259
260 HttpClientBuilder builder = HttpClientBuilder.create()
261 .setUserAgent(userAgent)
262 .setRedirectStrategy(LaxRedirectStrategy.INSTANCE)
263 .setDefaultSocketConfig(socketConfig)
264 .setDefaultRequestConfig(requestConfig)
265 .setServiceUnavailableRetryStrategy(serviceUnavailableRetryStrategy)
266 .setRetryHandler(retryHandler)
267 .setDefaultAuthSchemeRegistry(authSchemeRegistry)
268 .setConnectionManager(state.getConnectionManager())
269 .setConnectionManagerShared(true)
270 .setDefaultCredentialsProvider(toCredentialsProvider(server, repoAuthContext, proxy, proxyAuthContext))
271 .setProxy(proxy);
272 final boolean useSystemProperties = ConfigUtils.getBoolean(
273 session,
274 DEFAULT_USE_SYSTEM_PROPERTIES,
275 CONFIG_PROP_USE_SYSTEM_PROPERTIES + "." + repository.getId(),
276 CONFIG_PROP_USE_SYSTEM_PROPERTIES);
277 if (useSystemProperties) {
278 LOGGER.warn(
279 "Transport used Apache HttpClient is instructed to use system properties: this may yield in unwanted side-effects!");
280 LOGGER.warn("Please use documented means to configure resolver transport.");
281 builder.useSystemProperties();
282 }
283
284 HttpTransporterUtils.getHttpExpectContinue(session, repository).ifPresent(state::setExpectContinue);
285 if (!HttpTransporterUtils.isHttpReuseConnections(session, repository)) {
286 builder.setConnectionReuseStrategy(NoConnectionReuseStrategy.INSTANCE);
287 }
288
289 if (session.getCache() != null) {
290 String authCacheKey = getClass().getSimpleName() + "-" + repository.getId() + "-"
291 + StringDigestUtil.sha1(repository.toString());
292 this.authCache = (AuthCache) session.getCache().computeIfAbsent(session, authCacheKey, BasicAuthCache::new);
293 } else {
294 this.authCache = new BasicAuthCache();
295 }
296 this.client = builder.build();
297 }
298
299 private static HttpHost toHost(Proxy proxy) {
300 HttpHost host = null;
301 if (proxy != null) {
302
303
304
305
306 host = new HttpHost(proxy.getHost(), proxy.getPort());
307 }
308 return host;
309 }
310
311 private static CredentialsProvider toCredentialsProvider(
312 HttpHost server, AuthenticationContext serverAuthCtx, HttpHost proxy, AuthenticationContext proxyAuthCtx) {
313 CredentialsProvider provider = toCredentialsProvider(server.getHostName(), AuthScope.ANY_PORT, serverAuthCtx);
314 if (proxy != null) {
315 CredentialsProvider p = toCredentialsProvider(proxy.getHostName(), proxy.getPort(), proxyAuthCtx);
316 provider = new DemuxCredentialsProvider(provider, p, proxy);
317 }
318 return provider;
319 }
320
321 private static CredentialsProvider toCredentialsProvider(String host, int port, AuthenticationContext ctx) {
322 DeferredCredentialsProvider provider = new DeferredCredentialsProvider();
323 if (ctx != null) {
324 AuthScope basicScope = new AuthScope(host, port);
325 provider.setCredentials(basicScope, new DeferredCredentialsProvider.BasicFactory(ctx));
326
327 AuthScope ntlmScope = new AuthScope(host, port, AuthScope.ANY_REALM, "ntlm");
328 provider.setCredentials(ntlmScope, new DeferredCredentialsProvider.NtlmFactory(ctx));
329 }
330 return provider;
331 }
332
333 LocalState getState() {
334 return state;
335 }
336
337 private URI resolve(TransportTask task) {
338 return UriUtils.resolve(baseUri, task.getLocation());
339 }
340
341 @Override
342 protected void implPeek(PeekTask task) throws Exception {
343 HttpHead request = commonHeaders(new HttpHead(resolve(task)));
344 try {
345 execute(request, null);
346 } catch (HttpResponseException e) {
347 throw new HttpTransporterException(e.getStatusCode());
348 }
349 }
350
351 @Override
352 protected void implGet(GetTask task) throws Exception {
353 boolean resume = true;
354
355 EntityGetter getter = new EntityGetter(task);
356 HttpGet request = commonHeaders(new HttpGet(resolve(task)));
357 while (true) {
358 try {
359 if (resume) {
360 resume(request, task);
361 }
362 execute(request, getter);
363 break;
364 } catch (HttpResponseException e) {
365 if (resume
366 && e.getStatusCode() == HttpStatus.SC_PRECONDITION_FAILED
367 && request.containsHeader(HttpHeaders.RANGE)) {
368 request = commonHeaders(new HttpGet(resolve(task)));
369 resume = false;
370 continue;
371 }
372 throw new HttpTransporterException(e.getStatusCode());
373 }
374 }
375 }
376
377 @Override
378 protected void implPut(PutTask task) throws Exception {
379 PutTaskEntity entity = new PutTaskEntity(task);
380 HttpPut request = commonHeaders(entity(new HttpPut(resolve(task)), entity));
381 try {
382 execute(request, null);
383 } catch (HttpResponseException e) {
384 if (e.getStatusCode() == HttpStatus.SC_EXPECTATION_FAILED && request.containsHeader(HttpHeaders.EXPECT)) {
385 state.setExpectContinue(false);
386 request = commonHeaders(entity(new HttpPut(request.getURI()), entity));
387 execute(request, null);
388 return;
389 }
390 throw new HttpTransporterException(e.getStatusCode());
391 }
392 }
393
394 private void execute(HttpUriRequest request, EntityGetter getter) throws Exception {
395 try {
396 SharingHttpContext context = new SharingHttpContext(state);
397 context.setAuthCache(authCache);
398 prepare(request, context);
399 try (CloseableHttpResponse response = client.execute(server, request, context)) {
400 try {
401 handleStatus(response);
402 if (getter != null) {
403 getter.handle(response);
404 }
405 } finally {
406 EntityUtils.consumeQuietly(response.getEntity());
407 }
408 }
409 } catch (IOException e) {
410 if (e.getCause() instanceof TransferCancelledException) {
411 throw (Exception) e.getCause();
412 }
413 throw e;
414 }
415 }
416
417 private void prepare(HttpUriRequest request, SharingHttpContext context) throws Exception {
418 final boolean put = HttpPut.METHOD_NAME.equalsIgnoreCase(request.getMethod());
419 if (preemptiveAuth || (preemptivePutAuth && put)) {
420 context.getAuthCache().put(server, new BasicScheme());
421 }
422 if (supportWebDav) {
423 if (state.getWebDav() == null && (put || isPayloadPresent(request))) {
424 HttpOptions req = commonHeaders(new HttpOptions(request.getURI()));
425 try (CloseableHttpResponse response = client.execute(server, req, context)) {
426 state.setWebDav(response.containsHeader(HttpHeaders.DAV));
427 EntityUtils.consumeQuietly(response.getEntity());
428 } catch (IOException e) {
429 LOGGER.debug("Failed to prepare HTTP context", e);
430 }
431 }
432 if (put && Boolean.TRUE.equals(state.getWebDav())) {
433 mkdirs(request.getURI(), context);
434 }
435 }
436 }
437
438 private void mkdirs(URI uri, SharingHttpContext context) throws Exception {
439 List<URI> dirs = UriUtils.getDirectories(baseUri, uri);
440 int index = 0;
441 for (; index < dirs.size(); index++) {
442 try (CloseableHttpResponse response =
443 client.execute(server, commonHeaders(new HttpMkCol(dirs.get(index))), context)) {
444 try {
445 int status = response.getStatusLine().getStatusCode();
446 if (status < 300 || status == HttpStatus.SC_METHOD_NOT_ALLOWED) {
447 break;
448 } else if (status == HttpStatus.SC_CONFLICT) {
449 continue;
450 }
451 handleStatus(response);
452 } finally {
453 EntityUtils.consumeQuietly(response.getEntity());
454 }
455 } catch (IOException e) {
456 LOGGER.debug("Failed to create parent directory {}", dirs.get(index), e);
457 return;
458 }
459 }
460 for (index--; index >= 0; index--) {
461 try (CloseableHttpResponse response =
462 client.execute(server, commonHeaders(new HttpMkCol(dirs.get(index))), context)) {
463 try {
464 handleStatus(response);
465 } finally {
466 EntityUtils.consumeQuietly(response.getEntity());
467 }
468 } catch (IOException e) {
469 LOGGER.debug("Failed to create parent directory {}", dirs.get(index), e);
470 return;
471 }
472 }
473 }
474
475 private <T extends HttpEntityEnclosingRequest> T entity(T request, HttpEntity entity) {
476 request.setEntity(entity);
477 return request;
478 }
479
480 private boolean isPayloadPresent(HttpUriRequest request) {
481 if (request instanceof HttpEntityEnclosingRequest) {
482 HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();
483 return entity != null && entity.getContentLength() != 0;
484 }
485 return false;
486 }
487
488 private <T extends HttpUriRequest> T commonHeaders(T request) {
489 request.setHeader(HttpHeaders.CACHE_CONTROL, "no-cache, no-store");
490 request.setHeader(HttpHeaders.PRAGMA, "no-cache");
491
492 if (state.isExpectContinue() && isPayloadPresent(request)) {
493 request.setHeader(HttpHeaders.EXPECT, "100-continue");
494 }
495
496 for (Map.Entry<?, ?> entry : headers.entrySet()) {
497 if (!(entry.getKey() instanceof String)) {
498 continue;
499 }
500 if (entry.getValue() instanceof String) {
501 request.setHeader(entry.getKey().toString(), entry.getValue().toString());
502 } else {
503 request.removeHeaders(entry.getKey().toString());
504 }
505 }
506
507 if (!state.isExpectContinue()) {
508 request.removeHeaders(HttpHeaders.EXPECT);
509 }
510
511 return request;
512 }
513
514 private <T extends HttpUriRequest> void resume(T request, GetTask task) throws IOException {
515 long resumeOffset = task.getResumeOffset();
516 if (resumeOffset > 0L && task.getDataPath() != null) {
517 long lastModified = Files.getLastModifiedTime(task.getDataPath()).toMillis();
518 request.setHeader(HttpHeaders.RANGE, "bytes=" + resumeOffset + '-');
519 request.setHeader(
520 HttpHeaders.IF_UNMODIFIED_SINCE, DateUtils.formatDate(new Date(lastModified - 60L * 1000L)));
521 request.setHeader(HttpHeaders.ACCEPT_ENCODING, "identity");
522 }
523 }
524
525 private void handleStatus(CloseableHttpResponse response) throws Exception {
526 int status = response.getStatusLine().getStatusCode();
527 if (status >= 300) {
528 ApacheRFC9457Reporter.INSTANCE.generateException(response, (statusCode, reasonPhrase) -> {
529 throw new HttpResponseException(statusCode, reasonPhrase + " (" + statusCode + ")");
530 });
531 }
532 }
533
534 @Override
535 protected void implClose() {
536 try {
537 client.close();
538 } catch (IOException e) {
539 throw new UncheckedIOException(e);
540 }
541 AuthenticationContext.close(repoAuthContext);
542 AuthenticationContext.close(proxyAuthContext);
543 state.close();
544 }
545
546 private class EntityGetter {
547
548 private final GetTask task;
549
550 EntityGetter(GetTask task) {
551 this.task = task;
552 }
553
554 public void handle(CloseableHttpResponse response) throws IOException, TransferCancelledException {
555 HttpEntity entity = response.getEntity();
556 if (entity == null) {
557 entity = new ByteArrayEntity(new byte[0]);
558 }
559
560 long offset = 0L, length = entity.getContentLength();
561 Header rangeHeader = response.getFirstHeader(HttpHeaders.CONTENT_RANGE);
562 String range = rangeHeader != null ? rangeHeader.getValue() : null;
563 if (range != null) {
564 Matcher m = CONTENT_RANGE_PATTERN.matcher(range);
565 if (!m.matches()) {
566 throw new IOException("Invalid Content-Range header for partial download: " + range);
567 }
568 offset = Long.parseLong(m.group(1));
569 length = Long.parseLong(m.group(2)) + 1L;
570 if (offset < 0L || offset >= length || (offset > 0L && offset != task.getResumeOffset())) {
571 throw new IOException("Invalid Content-Range header for partial download from offset "
572 + task.getResumeOffset() + ": " + range);
573 }
574 }
575
576 final boolean resume = offset > 0L;
577 final Path dataFile = task.getDataPath();
578 if (dataFile == null) {
579 try (InputStream is = entity.getContent()) {
580 utilGet(task, is, true, length, resume);
581 extractChecksums(response);
582 }
583 } else {
584 try (PathProcessor.CollocatedTempFile tempFile = pathProcessor.newTempFile(dataFile)) {
585 task.setDataPath(tempFile.getPath(), resume);
586 if (resume && Files.isRegularFile(dataFile)) {
587 try (InputStream inputStream = Files.newInputStream(dataFile)) {
588 Files.copy(inputStream, tempFile.getPath(), StandardCopyOption.REPLACE_EXISTING);
589 }
590 }
591 try (InputStream is = entity.getContent()) {
592 utilGet(task, is, true, length, resume);
593 }
594 tempFile.move();
595 } finally {
596 task.setDataPath(dataFile);
597 }
598 }
599 if (task.getDataPath() != null) {
600 Header lastModifiedHeader =
601 response.getFirstHeader(HttpHeaders.LAST_MODIFIED);
602 if (lastModifiedHeader != null) {
603 Date lastModified = DateUtils.parseDate(lastModifiedHeader.getValue());
604 if (lastModified != null) {
605 pathProcessor.setLastModified(task.getDataPath(), lastModified.getTime());
606 }
607 }
608 }
609 extractChecksums(response);
610 }
611
612 private void extractChecksums(CloseableHttpResponse response) {
613 Map<String, String> checksums = checksumExtractor.extractChecksums(headerGetter(response));
614 if (checksums != null && !checksums.isEmpty()) {
615 checksums.forEach(task::setChecksum);
616 }
617 }
618 }
619
620 private static Function<String, String> headerGetter(CloseableHttpResponse closeableHttpResponse) {
621 return s -> {
622 Header header = closeableHttpResponse.getFirstHeader(s);
623 return header != null ? header.getValue() : null;
624 };
625 }
626
627 private class PutTaskEntity extends AbstractHttpEntity {
628
629 private final PutTask task;
630
631 PutTaskEntity(PutTask task) {
632 this.task = task;
633 }
634
635 @Override
636 public boolean isRepeatable() {
637 return true;
638 }
639
640 @Override
641 public boolean isStreaming() {
642 return false;
643 }
644
645 @Override
646 public long getContentLength() {
647 return task.getDataLength();
648 }
649
650 @Override
651 public InputStream getContent() throws IOException {
652 return task.newInputStream();
653 }
654
655 @Override
656 public void writeTo(OutputStream os) throws IOException {
657 try {
658 utilPut(task, os, false);
659 } catch (TransferCancelledException e) {
660 throw (IOException) new InterruptedIOException().initCause(e);
661 }
662 }
663 }
664
665 private static class ResolverServiceUnavailableRetryStrategy implements ServiceUnavailableRetryStrategy {
666 private final int retryCount;
667
668 private final long retryInterval;
669
670 private final long retryIntervalMax;
671
672 private final Set<Integer> serviceUnavailableHttpCodes;
673
674
675
676
677
678
679 private static final ThreadLocal<Long> RETRY_INTERVAL_HOLDER = new ThreadLocal<>();
680
681 private ResolverServiceUnavailableRetryStrategy(
682 int retryCount, long retryInterval, long retryIntervalMax, Set<Integer> serviceUnavailableHttpCodes) {
683 if (retryCount < 0) {
684 throw new IllegalArgumentException("retryCount must be >= 0");
685 }
686 if (retryInterval < 0L) {
687 throw new IllegalArgumentException("retryInterval must be >= 0");
688 }
689 if (retryIntervalMax < 0L) {
690 throw new IllegalArgumentException("retryIntervalMax must be >= 0");
691 }
692 this.retryCount = retryCount;
693 this.retryInterval = retryInterval;
694 this.retryIntervalMax = retryIntervalMax;
695 this.serviceUnavailableHttpCodes = requireNonNull(serviceUnavailableHttpCodes);
696 }
697
698 @Override
699 public boolean retryRequest(HttpResponse response, int executionCount, HttpContext context) {
700 final boolean retry = executionCount <= retryCount
701 && (serviceUnavailableHttpCodes.contains(
702 response.getStatusLine().getStatusCode()));
703 if (retry) {
704 Long retryInterval = retryInterval(response, executionCount, context);
705 if (retryInterval != null) {
706 RETRY_INTERVAL_HOLDER.set(retryInterval);
707 return true;
708 }
709 }
710 RETRY_INTERVAL_HOLDER.remove();
711 return false;
712 }
713
714
715
716
717
718
719
720
721 private Long retryInterval(HttpResponse httpResponse, int executionCount, HttpContext httpContext) {
722 Long result = null;
723 Header header = httpResponse.getFirstHeader(HttpHeaders.RETRY_AFTER);
724 if (header != null && header.getValue() != null) {
725 String headerValue = header.getValue();
726 if (headerValue.contains(":")) {
727 Date when = DateUtils.parseDate(headerValue);
728 if (when != null) {
729 result = Math.max(when.getTime() - System.currentTimeMillis(), 0L);
730 }
731 } else {
732 try {
733 result = Long.parseLong(headerValue) * 1000L;
734 } catch (NumberFormatException e) {
735
736 }
737 }
738 }
739 if (result == null) {
740 result = executionCount * this.retryInterval;
741 }
742 if (result > retryIntervalMax) {
743 return null;
744 }
745 return result;
746 }
747
748 @Override
749 public long getRetryInterval() {
750 Long ri = RETRY_INTERVAL_HOLDER.get();
751 if (ri == null) {
752 return 0L;
753 }
754 RETRY_INTERVAL_HOLDER.remove();
755 return ri;
756 }
757 }
758 }