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19 package org.eclipse.aether.internal.impl;
20
21 import javax.inject.Inject;
22 import javax.inject.Named;
23 import javax.inject.Singleton;
24
25 import java.util.ArrayList;
26 import java.util.Arrays;
27 import java.util.List;
28 import java.util.ListIterator;
29
30 import org.eclipse.aether.RepositoryCache;
31 import org.eclipse.aether.RepositorySystemSession;
32 import org.eclipse.aether.impl.RemoteRepositoryManager;
33 import org.eclipse.aether.impl.UpdatePolicyAnalyzer;
34 import org.eclipse.aether.repository.Authentication;
35 import org.eclipse.aether.repository.AuthenticationSelector;
36 import org.eclipse.aether.repository.MirrorSelector;
37 import org.eclipse.aether.repository.Proxy;
38 import org.eclipse.aether.repository.ProxySelector;
39 import org.eclipse.aether.repository.RemoteRepository;
40 import org.eclipse.aether.repository.RepositoryPolicy;
41 import org.eclipse.aether.spi.connector.checksum.ChecksumPolicyProvider;
42 import org.eclipse.aether.spi.locator.Service;
43 import org.eclipse.aether.spi.locator.ServiceLocator;
44 import org.slf4j.Logger;
45 import org.slf4j.LoggerFactory;
46
47 import static java.util.Objects.requireNonNull;
48
49
50
51 @Singleton
52 @Named
53 public class DefaultRemoteRepositoryManager implements RemoteRepositoryManager, Service {
54
55 private static final class LoggedMirror {
56
57 private final Object[] keys;
58
59 LoggedMirror(RemoteRepository original, RemoteRepository mirror) {
60 keys = new Object[] {mirror.getId(), mirror.getUrl(), original.getId(), original.getUrl()};
61 }
62
63 @Override
64 public boolean equals(Object obj) {
65 if (this == obj) {
66 return true;
67 } else if (!(obj instanceof LoggedMirror)) {
68 return false;
69 }
70 LoggedMirror that = (LoggedMirror) obj;
71 return Arrays.equals(keys, that.keys);
72 }
73
74 @Override
75 public int hashCode() {
76 return Arrays.hashCode(keys);
77 }
78 }
79
80 private static final Logger LOGGER = LoggerFactory.getLogger(DefaultRemoteRepositoryManager.class);
81
82 private UpdatePolicyAnalyzer updatePolicyAnalyzer;
83
84 private ChecksumPolicyProvider checksumPolicyProvider;
85
86 public DefaultRemoteRepositoryManager() {
87
88 }
89
90 @Inject
91 DefaultRemoteRepositoryManager(
92 UpdatePolicyAnalyzer updatePolicyAnalyzer, ChecksumPolicyProvider checksumPolicyProvider) {
93 setUpdatePolicyAnalyzer(updatePolicyAnalyzer);
94 setChecksumPolicyProvider(checksumPolicyProvider);
95 }
96
97 public void initService(ServiceLocator locator) {
98 setUpdatePolicyAnalyzer(locator.getService(UpdatePolicyAnalyzer.class));
99 setChecksumPolicyProvider(locator.getService(ChecksumPolicyProvider.class));
100 }
101
102 public DefaultRemoteRepositoryManager setUpdatePolicyAnalyzer(UpdatePolicyAnalyzer updatePolicyAnalyzer) {
103 this.updatePolicyAnalyzer = requireNonNull(updatePolicyAnalyzer, "update policy analyzer cannot be null");
104 return this;
105 }
106
107 public DefaultRemoteRepositoryManager setChecksumPolicyProvider(ChecksumPolicyProvider checksumPolicyProvider) {
108 this.checksumPolicyProvider = requireNonNull(checksumPolicyProvider, "checksum policy provider cannot be null");
109 return this;
110 }
111
112 public List<RemoteRepository> aggregateRepositories(
113 RepositorySystemSession session,
114 List<RemoteRepository> dominantRepositories,
115 List<RemoteRepository> recessiveRepositories,
116 boolean recessiveIsRaw) {
117 requireNonNull(session, "session cannot be null");
118 requireNonNull(dominantRepositories, "dominantRepositories cannot be null");
119 requireNonNull(recessiveRepositories, "recessiveRepositories cannot be null");
120 if (recessiveRepositories.isEmpty()) {
121 return dominantRepositories;
122 }
123
124 MirrorSelector mirrorSelector = session.getMirrorSelector();
125 AuthenticationSelector authSelector = session.getAuthenticationSelector();
126 ProxySelector proxySelector = session.getProxySelector();
127
128 List<RemoteRepository> result = new ArrayList<>(dominantRepositories);
129
130 next:
131 for (RemoteRepository recessiveRepository : recessiveRepositories) {
132 RemoteRepository repository = recessiveRepository;
133
134 if (recessiveIsRaw) {
135 RemoteRepository mirrorRepository = mirrorSelector.getMirror(recessiveRepository);
136
137 if (mirrorRepository != null) {
138 logMirror(session, recessiveRepository, mirrorRepository);
139 repository = mirrorRepository;
140 }
141 }
142
143 String key = getKey(repository);
144
145 for (ListIterator<RemoteRepository> it = result.listIterator(); it.hasNext(); ) {
146 RemoteRepository dominantRepository = it.next();
147
148 if (key.equals(getKey(dominantRepository))) {
149 if (!dominantRepository.getMirroredRepositories().isEmpty()
150 && !repository.getMirroredRepositories().isEmpty()) {
151 RemoteRepository mergedRepository = mergeMirrors(session, dominantRepository, repository);
152 if (mergedRepository != dominantRepository) {
153 it.set(mergedRepository);
154 }
155 }
156
157 continue next;
158 }
159 }
160
161 if (recessiveIsRaw) {
162 RemoteRepository.Builder builder = null;
163 Authentication auth = authSelector.getAuthentication(repository);
164 if (auth != null) {
165 builder = new RemoteRepository.Builder(repository);
166 builder.setAuthentication(auth);
167 }
168 Proxy proxy = proxySelector.getProxy(repository);
169 if (proxy != null) {
170 if (builder == null) {
171 builder = new RemoteRepository.Builder(repository);
172 }
173 builder.setProxy(proxy);
174 }
175 if (builder != null) {
176 repository = builder.build();
177 }
178 }
179
180 result.add(repository);
181 }
182
183 return result;
184 }
185
186 private void logMirror(RepositorySystemSession session, RemoteRepository original, RemoteRepository mirror) {
187 if (!LOGGER.isDebugEnabled()) {
188 return;
189 }
190 RepositoryCache cache = session.getCache();
191 if (cache != null) {
192 Object key = new LoggedMirror(original, mirror);
193 if (cache.get(session, key) != null) {
194 return;
195 }
196 cache.put(session, key, Boolean.TRUE);
197 }
198 LOGGER.debug(
199 "Using mirror {} ({}) for {} ({}).",
200 mirror.getId(),
201 mirror.getUrl(),
202 original.getId(),
203 original.getUrl());
204 }
205
206 private String getKey(RemoteRepository repository) {
207 return repository.getId();
208 }
209
210 private RemoteRepository mergeMirrors(
211 RepositorySystemSession session, RemoteRepository dominant, RemoteRepository recessive) {
212 RemoteRepository.Builder merged = null;
213 RepositoryPolicy releases = null, snapshots = null;
214
215 next:
216 for (RemoteRepository rec : recessive.getMirroredRepositories()) {
217 String recKey = getKey(rec);
218
219 for (RemoteRepository dom : dominant.getMirroredRepositories()) {
220 if (recKey.equals(getKey(dom))) {
221 continue next;
222 }
223 }
224
225 if (merged == null) {
226 merged = new RemoteRepository.Builder(dominant);
227 releases = dominant.getPolicy(false);
228 snapshots = dominant.getPolicy(true);
229 }
230
231 releases = merge(session, releases, rec.getPolicy(false), false);
232 snapshots = merge(session, snapshots, rec.getPolicy(true), false);
233
234 merged.addMirroredRepository(rec);
235 }
236
237 if (merged == null) {
238 return dominant;
239 }
240 return merged.setReleasePolicy(releases).setSnapshotPolicy(snapshots).build();
241 }
242
243 public RepositoryPolicy getPolicy(
244 RepositorySystemSession session, RemoteRepository repository, boolean releases, boolean snapshots) {
245 requireNonNull(session, "session cannot be null");
246 requireNonNull(repository, "repository cannot be null");
247 RepositoryPolicy policy1 = releases ? repository.getPolicy(false) : null;
248 RepositoryPolicy policy2 = snapshots ? repository.getPolicy(true) : null;
249 return merge(session, policy1, policy2, true);
250 }
251
252 private RepositoryPolicy merge(
253 RepositorySystemSession session, RepositoryPolicy policy1, RepositoryPolicy policy2, boolean globalPolicy) {
254 RepositoryPolicy policy;
255
256 if (policy2 == null) {
257 if (globalPolicy) {
258 policy = merge(policy1, session.getUpdatePolicy(), session.getChecksumPolicy());
259 } else {
260 policy = policy1;
261 }
262 } else if (policy1 == null) {
263 if (globalPolicy) {
264 policy = merge(policy2, session.getUpdatePolicy(), session.getChecksumPolicy());
265 } else {
266 policy = policy2;
267 }
268 } else if (!policy2.isEnabled()) {
269 if (globalPolicy) {
270 policy = merge(policy1, session.getUpdatePolicy(), session.getChecksumPolicy());
271 } else {
272 policy = policy1;
273 }
274 } else if (!policy1.isEnabled()) {
275 if (globalPolicy) {
276 policy = merge(policy2, session.getUpdatePolicy(), session.getChecksumPolicy());
277 } else {
278 policy = policy2;
279 }
280 } else {
281 String checksums = session.getChecksumPolicy();
282
283 if (globalPolicy && checksums != null && !checksums.isEmpty()) {
284
285 } else {
286 checksums = checksumPolicyProvider.getEffectiveChecksumPolicy(
287 session, policy1.getChecksumPolicy(), policy2.getChecksumPolicy());
288 }
289
290 String updates = session.getUpdatePolicy();
291
292 if (globalPolicy && updates != null && !updates.isEmpty()) {
293
294 } else {
295 updates = updatePolicyAnalyzer.getEffectiveUpdatePolicy(
296 session, policy1.getUpdatePolicy(), policy2.getUpdatePolicy());
297 }
298
299 policy = new RepositoryPolicy(true, updates, checksums);
300 }
301
302 return policy;
303 }
304
305 private RepositoryPolicy merge(RepositoryPolicy policy, String updates, String checksums) {
306 if (policy != null) {
307 if (updates == null || updates.isEmpty()) {
308 updates = policy.getUpdatePolicy();
309 }
310 if (checksums == null || checksums.isEmpty()) {
311 checksums = policy.getChecksumPolicy();
312 }
313 if (!policy.getUpdatePolicy().equals(updates)
314 || !policy.getChecksumPolicy().equals(checksums)) {
315 policy = new RepositoryPolicy(policy.isEnabled(), updates, checksums);
316 }
317 }
318 return policy;
319 }
320 }