Mercurial > hg4j

comparison src/org/tmatesoft/hg/repo/HgBranches.java @ 354:5f9073eabf06

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Propagate errors with exceptions up to a end client
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 01 Dec 2011 05:21:40 +0100
parents a0864b2892cd
children 189dc6dc1c3e
comparison
equal deleted inserted replaced
353:0f3687e79f5a 354:5f9073eabf06
32 import java.util.List; 32 import java.util.List;
33 import java.util.Map; 33 import java.util.Map;
34 import java.util.TreeMap; 34 import java.util.TreeMap;
35 import java.util.regex.Pattern; 35 import java.util.regex.Pattern;
36 36
37 import org.tmatesoft.hg.core.HgException;
38 import org.tmatesoft.hg.core.HgInvalidControlFileException;
39 import org.tmatesoft.hg.core.HgInvalidRevisionException;
37 import org.tmatesoft.hg.core.Nodeid; 40 import org.tmatesoft.hg.core.Nodeid;
38 import org.tmatesoft.hg.internal.Experimental; 41 import org.tmatesoft.hg.internal.Experimental;
39 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset; 42 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
40 import org.tmatesoft.hg.util.ProgressSupport; 43 import org.tmatesoft.hg.util.ProgressSupport;
41 44
100 // log error, but otherwise do nothing 103 // log error, but otherwise do nothing
101 repo.getContext().getLog().warn(getClass(), ex, null); 104 repo.getContext().getLog().warn(getClass(), ex, null);
102 // FALL THROUGH to return -1 indicating no cache information 105 // FALL THROUGH to return -1 indicating no cache information
103 } catch (NumberFormatException ex) { 106 } catch (NumberFormatException ex) {
104 repo.getContext().getLog().warn(getClass(), ex, null); 107 repo.getContext().getLog().warn(getClass(), ex, null);
108 // FALL THROUGH
109 } catch (HgInvalidControlFileException ex) {
110 // shall not happen, thus log as error
111 repo.getContext().getLog().error(getClass(), ex, null);
112 // FALL THROUGH
113 } catch (HgInvalidRevisionException ex) {
114 repo.getContext().getLog().error(getClass(), ex, null);
105 // FALL THROUGH 115 // FALL THROUGH
106 } finally { 116 } finally {
107 if (br != null) { 117 if (br != null) {
108 try { 118 try {
109 br.close(); 119 br.close();
227 } 237 }
228 238
229 /** 239 /**
230 * Writes down information about repository branches in a format Mercurial native client can understand. 240 * Writes down information about repository branches in a format Mercurial native client can understand.
231 * Cache file gets overwritten only if it is out of date (i.e. misses some branch information) 241 * Cache file gets overwritten only if it is out of date (i.e. misses some branch information)
242 * @throws IOException if write to cache file failed
243 * @throws HgException subclass of {@link HgException} in case of repository access issue
232 */ 244 */
233 @Experimental(reason="Usage of cache isn't supposed to be public knowledge") 245 @Experimental(reason="Usage of cache isn't supposed to be public knowledge")
234 public void writeCache() { 246 public void writeCache() throws IOException, HgException {
235 if (isCacheActual) { 247 if (isCacheActual) {
236 return; 248 return;
237 } 249 }
238 try { 250 File branchheadsCache = getCacheFile();
239 File branchheadsCache = getCacheFile(); 251 if (!branchheadsCache.exists()) {
240 if (!branchheadsCache.exists()) { 252 branchheadsCache.getParentFile().mkdirs(); // just in case cache/ doesn't exist jet
241 branchheadsCache.getParentFile().mkdirs(); // just in case cache/ doesn't exist jet 253 branchheadsCache.createNewFile();
242 branchheadsCache.createNewFile(); 254 }
243 } 255 if (!branchheadsCache.canWrite()) {
244 if (!branchheadsCache.canWrite()) { 256 return;
245 return; 257 }
246 } 258 final int lastRev = repo.getChangelog().getLastRevision();
247 final int lastRev = repo.getChangelog().getLastRevision(); 259 final Nodeid lastNid = repo.getChangelog().getRevision(lastRev);
248 final Nodeid lastNid = repo.getChangelog().getRevision(lastRev); 260 BufferedWriter bw = new BufferedWriter(new FileWriter(branchheadsCache));
249 BufferedWriter bw = new BufferedWriter(new FileWriter(branchheadsCache)); 261 bw.write(lastNid.toString());
250 bw.write(lastNid.toString()); 262 bw.write((int) ' ');
251 bw.write((int) ' '); 263 bw.write(Integer.toString(lastRev));
252 bw.write(Integer.toString(lastRev)); 264 bw.write("\n");
253 bw.write("\n"); 265 for (BranchInfo bi : branches.values()) {
254 for (BranchInfo bi : branches.values()) { 266 for (Nodeid nid : bi.getHeads()) {
255 for (Nodeid nid : bi.getHeads()) { 267 bw.write(nid.toString());
256 bw.write(nid.toString()); 268 bw.write((int) ' ');
257 bw.write((int) ' '); 269 bw.write(bi.getName());
258 bw.write(bi.getName()); 270 bw.write("\n");
259 bw.write("\n"); 271 }
260 } 272 }
261 } 273 bw.close();
262 bw.close();
263 } catch (IOException ex) {
264 repo.getContext().getLog().error(getClass(), ex, "Error writing branch cache file");
265 }
266 } 274 }
267 275
268 private File getCacheFile() { 276 private File getCacheFile() {
269 // prior to 1.8 used to be .hg/branchheads.cache 277 // prior to 1.8 used to be .hg/branchheads.cache
270 return new File(repo.getRepositoryRoot(), "cache/branchheads"); 278 return new File(repo.getRepositoryRoot(), "cache/branchheads");