diff options
Diffstat (limited to 'src/main/java/com/gitblit/service/FederationPullService.java')
-rw-r--r-- | src/main/java/com/gitblit/service/FederationPullService.java | 491 |
1 files changed, 491 insertions, 0 deletions
diff --git a/src/main/java/com/gitblit/service/FederationPullService.java b/src/main/java/com/gitblit/service/FederationPullService.java new file mode 100644 index 00000000..91fe015b --- /dev/null +++ b/src/main/java/com/gitblit/service/FederationPullService.java @@ -0,0 +1,491 @@ +package com.gitblit.service; + +import static org.eclipse.jgit.lib.Constants.DOT_GIT_EXT; + +import java.io.File; +import java.io.FileOutputStream; +import java.io.IOException; +import java.net.InetAddress; +import java.text.MessageFormat; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collection; +import java.util.Date; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Properties; +import java.util.Set; + +import org.eclipse.jgit.lib.Repository; +import org.eclipse.jgit.lib.StoredConfig; +import org.eclipse.jgit.revwalk.RevCommit; +import org.eclipse.jgit.transport.CredentialsProvider; +import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import com.gitblit.ConfigUserService; +import com.gitblit.Constants; +import com.gitblit.Constants.AccessPermission; +import com.gitblit.Constants.FederationPullStatus; +import com.gitblit.Constants.FederationStrategy; +import com.gitblit.GitBlitException.ForbiddenException; +import com.gitblit.Gitblit; +import com.gitblit.IUserService; +import com.gitblit.Keys; +import com.gitblit.models.FederationModel; +import com.gitblit.models.RefModel; +import com.gitblit.models.RepositoryModel; +import com.gitblit.models.TeamModel; +import com.gitblit.models.UserModel; +import com.gitblit.utils.ArrayUtils; +import com.gitblit.utils.FederationUtils; +import com.gitblit.utils.FileUtils; +import com.gitblit.utils.JGitUtils; +import com.gitblit.utils.JGitUtils.CloneResult; +import com.gitblit.utils.StringUtils; + +public abstract class FederationPullService implements Runnable { + + Logger logger = LoggerFactory.getLogger(getClass()); + + Gitblit gitblit; + + private final List<FederationModel> registrations; + + /** + * Constructor for specifying a single federation registration. This + * constructor is used to schedule the next pull execution. + * + * @param provider + * @param registration + */ + public FederationPullService(FederationModel registration) { + this(Arrays.asList(registration)); + } + + /** + * Constructor to specify a group of federation registrations. This is + * normally used at startup to pull and then schedule the next update based + * on each registrations frequency setting. + * + * @param provider + * @param registrations + * @param isDaemon + * if true, registrations are rescheduled in perpetuity. if + * false, the federation pull operation is executed once. + */ + public FederationPullService(List<FederationModel> registrations) { + this.registrations = registrations; + } + + public abstract void reschedule(FederationModel registration); + + /** + * Run method for this pull service. + */ + @Override + public void run() { + for (FederationModel registration : registrations) { + FederationPullStatus was = registration.getLowestStatus(); + try { + Date now = new Date(System.currentTimeMillis()); + pull(registration); + sendStatusAcknowledgment(registration); + registration.lastPull = now; + FederationPullStatus is = registration.getLowestStatus(); + if (is.ordinal() < was.ordinal()) { + // the status for this registration has downgraded + logger.warn("Federation pull status of {0} is now {1}", registration.name, + is.name()); + if (registration.notifyOnError) { + String message = "Federation pull of " + registration.name + " @ " + + registration.url + " is now at " + is.name(); + gitblit.sendMailToAdministrators( + "Pull Status of " + registration.name + " is " + is.name(), + message); + } + } + } catch (Throwable t) { + logger.error(MessageFormat.format( + "Failed to pull from federated gitblit ({0} @ {1})", registration.name, + registration.url), t); + } finally { + reschedule(registration); + } + } + } + + /** + * Mirrors a repository and, optionally, the server's users, and/or + * configuration settings from a origin Gitblit instance. + * + * @param registration + * @throws Exception + */ + private void pull(FederationModel registration) throws Exception { + Map<String, RepositoryModel> repositories = FederationUtils.getRepositories(registration, + true); + String registrationFolder = registration.folder.toLowerCase().trim(); + // confirm valid characters in server alias + Character c = StringUtils.findInvalidCharacter(registrationFolder); + if (c != null) { + logger.error(MessageFormat + .format("Illegal character ''{0}'' in folder name ''{1}'' of federation registration {2}!", + c, registrationFolder, registration.name)); + return; + } + File repositoriesFolder = gitblit.getRepositoriesFolder(); + File registrationFolderFile = new File(repositoriesFolder, registrationFolder); + registrationFolderFile.mkdirs(); + + // Clone/Pull the repository + for (Map.Entry<String, RepositoryModel> entry : repositories.entrySet()) { + String cloneUrl = entry.getKey(); + RepositoryModel repository = entry.getValue(); + if (!repository.hasCommits) { + logger.warn(MessageFormat.format( + "Skipping federated repository {0} from {1} @ {2}. Repository is EMPTY.", + repository.name, registration.name, registration.url)); + registration.updateStatus(repository, FederationPullStatus.SKIPPED); + continue; + } + + // Determine local repository name + String repositoryName; + if (StringUtils.isEmpty(registrationFolder)) { + repositoryName = repository.name; + } else { + repositoryName = registrationFolder + "/" + repository.name; + } + + if (registration.bare) { + // bare repository, ensure .git suffix + if (!repositoryName.toLowerCase().endsWith(DOT_GIT_EXT)) { + repositoryName += DOT_GIT_EXT; + } + } else { + // normal repository, strip .git suffix + if (repositoryName.toLowerCase().endsWith(DOT_GIT_EXT)) { + repositoryName = repositoryName.substring(0, + repositoryName.indexOf(DOT_GIT_EXT)); + } + } + + // confirm that the origin of any pre-existing repository matches + // the clone url + String fetchHead = null; + Repository existingRepository = gitblit.getRepository(repositoryName); + + if (existingRepository == null && gitblit.isCollectingGarbage(repositoryName)) { + logger.warn(MessageFormat.format("Skipping local repository {0}, busy collecting garbage", repositoryName)); + continue; + } + + if (existingRepository != null) { + StoredConfig config = existingRepository.getConfig(); + config.load(); + String origin = config.getString("remote", "origin", "url"); + RevCommit commit = JGitUtils.getCommit(existingRepository, + org.eclipse.jgit.lib.Constants.FETCH_HEAD); + if (commit != null) { + fetchHead = commit.getName(); + } + existingRepository.close(); + if (!origin.startsWith(registration.url)) { + logger.warn(MessageFormat + .format("Skipping federated repository {0} from {1} @ {2}. Origin does not match, consider EXCLUDING.", + repository.name, registration.name, registration.url)); + registration.updateStatus(repository, FederationPullStatus.SKIPPED); + continue; + } + } + + // clone/pull this repository + CredentialsProvider credentials = new UsernamePasswordCredentialsProvider( + Constants.FEDERATION_USER, registration.token); + logger.info(MessageFormat.format("Pulling federated repository {0} from {1} @ {2}", + repository.name, registration.name, registration.url)); + + CloneResult result = JGitUtils.cloneRepository(registrationFolderFile, repository.name, + cloneUrl, registration.bare, credentials); + Repository r = gitblit.getRepository(repositoryName); + RepositoryModel rm = gitblit.getRepositoryModel(repositoryName); + repository.isFrozen = registration.mirror; + if (result.createdRepository) { + // default local settings + repository.federationStrategy = FederationStrategy.EXCLUDE; + repository.isFrozen = registration.mirror; + repository.showRemoteBranches = !registration.mirror; + logger.info(MessageFormat.format(" cloning {0}", repository.name)); + registration.updateStatus(repository, FederationPullStatus.MIRRORED); + } else { + // fetch and update + boolean fetched = false; + RevCommit commit = JGitUtils.getCommit(r, org.eclipse.jgit.lib.Constants.FETCH_HEAD); + String newFetchHead = commit.getName(); + fetched = fetchHead == null || !fetchHead.equals(newFetchHead); + + if (registration.mirror) { + // mirror + if (fetched) { + // update local branches to match the remote tracking branches + for (RefModel ref : JGitUtils.getRemoteBranches(r, false, -1)) { + if (ref.displayName.startsWith("origin/")) { + String branch = org.eclipse.jgit.lib.Constants.R_HEADS + + ref.displayName.substring(ref.displayName.indexOf('/') + 1); + String hash = ref.getReferencedObjectId().getName(); + + JGitUtils.setBranchRef(r, branch, hash); + logger.info(MessageFormat.format(" resetting {0} of {1} to {2}", branch, + repository.name, hash)); + } + } + + String newHead; + if (StringUtils.isEmpty(repository.HEAD)) { + newHead = newFetchHead; + } else { + newHead = repository.HEAD; + } + JGitUtils.setHEADtoRef(r, newHead); + logger.info(MessageFormat.format(" resetting HEAD of {0} to {1}", + repository.name, newHead)); + registration.updateStatus(repository, FederationPullStatus.MIRRORED); + } else { + // indicate no commits pulled + registration.updateStatus(repository, FederationPullStatus.NOCHANGE); + } + } else { + // non-mirror + if (fetched) { + // indicate commits pulled to origin/master + registration.updateStatus(repository, FederationPullStatus.PULLED); + } else { + // indicate no commits pulled + registration.updateStatus(repository, FederationPullStatus.NOCHANGE); + } + } + + // preserve local settings + repository.isFrozen = rm.isFrozen; + repository.federationStrategy = rm.federationStrategy; + + // merge federation sets + Set<String> federationSets = new HashSet<String>(); + if (rm.federationSets != null) { + federationSets.addAll(rm.federationSets); + } + if (repository.federationSets != null) { + federationSets.addAll(repository.federationSets); + } + repository.federationSets = new ArrayList<String>(federationSets); + + // merge indexed branches + Set<String> indexedBranches = new HashSet<String>(); + if (rm.indexedBranches != null) { + indexedBranches.addAll(rm.indexedBranches); + } + if (repository.indexedBranches != null) { + indexedBranches.addAll(repository.indexedBranches); + } + repository.indexedBranches = new ArrayList<String>(indexedBranches); + + } + // only repositories that are actually _cloned_ from the origin + // Gitblit repository are marked as federated. If the origin + // is from somewhere else, these repositories are not considered + // "federated" repositories. + repository.isFederated = cloneUrl.startsWith(registration.url); + + gitblit.updateConfiguration(r, repository); + r.close(); + } + + IUserService userService = null; + + try { + // Pull USERS + // TeamModels are automatically pulled because they are contained + // within the UserModel. The UserService creates unknown teams + // and updates existing teams. + Collection<UserModel> users = FederationUtils.getUsers(registration); + if (users != null && users.size() > 0) { + File realmFile = new File(registrationFolderFile, registration.name + "_users.conf"); + realmFile.delete(); + userService = new ConfigUserService(realmFile); + for (UserModel user : users) { + userService.updateUserModel(user.username, user); + + // merge the origin permissions and origin accounts into + // the user accounts of this Gitblit instance + if (registration.mergeAccounts) { + // reparent all repository permissions if the local + // repositories are stored within subfolders + if (!StringUtils.isEmpty(registrationFolder)) { + if (user.permissions != null) { + // pulling from >= 1.2 version + Map<String, AccessPermission> copy = new HashMap<String, AccessPermission>(user.permissions); + user.permissions.clear(); + for (Map.Entry<String, AccessPermission> entry : copy.entrySet()) { + user.setRepositoryPermission(registrationFolder + "/" + entry.getKey(), entry.getValue()); + } + } else { + // pulling from <= 1.1 version + List<String> permissions = new ArrayList<String>(user.repositories); + user.repositories.clear(); + for (String permission : permissions) { + user.addRepositoryPermission(registrationFolder + "/" + permission); + } + } + } + + // insert new user or update local user + UserModel localUser = gitblit.getUserModel(user.username); + if (localUser == null) { + // create new local user + gitblit.updateUserModel(user.username, user, true); + } else { + // update repository permissions of local user + if (user.permissions != null) { + // pulling from >= 1.2 version + Map<String, AccessPermission> copy = new HashMap<String, AccessPermission>(user.permissions); + for (Map.Entry<String, AccessPermission> entry : copy.entrySet()) { + localUser.setRepositoryPermission(entry.getKey(), entry.getValue()); + } + } else { + // pulling from <= 1.1 version + for (String repository : user.repositories) { + localUser.addRepositoryPermission(repository); + } + } + localUser.password = user.password; + localUser.canAdmin = user.canAdmin; + gitblit.updateUserModel(localUser.username, localUser, false); + } + + for (String teamname : gitblit.getAllTeamNames()) { + TeamModel team = gitblit.getTeamModel(teamname); + if (user.isTeamMember(teamname) && !team.hasUser(user.username)) { + // new team member + team.addUser(user.username); + gitblit.updateTeamModel(teamname, team); + } else if (!user.isTeamMember(teamname) && team.hasUser(user.username)) { + // remove team member + team.removeUser(user.username); + gitblit.updateTeamModel(teamname, team); + } + + // update team repositories + TeamModel remoteTeam = user.getTeam(teamname); + if (remoteTeam != null) { + if (remoteTeam.permissions != null) { + // pulling from >= 1.2 + for (Map.Entry<String, AccessPermission> entry : remoteTeam.permissions.entrySet()){ + team.setRepositoryPermission(entry.getKey(), entry.getValue()); + } + gitblit.updateTeamModel(teamname, team); + } else if (!ArrayUtils.isEmpty(remoteTeam.repositories)) { + // pulling from <= 1.1 + team.addRepositoryPermissions(remoteTeam.repositories); + gitblit.updateTeamModel(teamname, team); + } + } + } + } + } + } + } catch (ForbiddenException e) { + // ignore forbidden exceptions + } catch (IOException e) { + logger.warn(MessageFormat.format( + "Failed to retrieve USERS from federated gitblit ({0} @ {1})", + registration.name, registration.url), e); + } + + try { + // Pull TEAMS + // We explicitly pull these even though they are embedded in + // UserModels because it is possible to use teams to specify + // mailing lists or push scripts without specifying users. + if (userService != null) { + Collection<TeamModel> teams = FederationUtils.getTeams(registration); + if (teams != null && teams.size() > 0) { + for (TeamModel team : teams) { + userService.updateTeamModel(team); + } + } + } + } catch (ForbiddenException e) { + // ignore forbidden exceptions + } catch (IOException e) { + logger.warn(MessageFormat.format( + "Failed to retrieve TEAMS from federated gitblit ({0} @ {1})", + registration.name, registration.url), e); + } + + try { + // Pull SETTINGS + Map<String, String> settings = FederationUtils.getSettings(registration); + if (settings != null && settings.size() > 0) { + Properties properties = new Properties(); + properties.putAll(settings); + FileOutputStream os = new FileOutputStream(new File(registrationFolderFile, + registration.name + "_" + Constants.PROPERTIES_FILE)); + properties.store(os, null); + os.close(); + } + } catch (ForbiddenException e) { + // ignore forbidden exceptions + } catch (IOException e) { + logger.warn(MessageFormat.format( + "Failed to retrieve SETTINGS from federated gitblit ({0} @ {1})", + registration.name, registration.url), e); + } + + try { + // Pull SCRIPTS + Map<String, String> scripts = FederationUtils.getScripts(registration); + if (scripts != null && scripts.size() > 0) { + for (Map.Entry<String, String> script : scripts.entrySet()) { + String scriptName = script.getKey(); + if (scriptName.endsWith(".groovy")) { + scriptName = scriptName.substring(0, scriptName.indexOf(".groovy")); + } + File file = new File(registrationFolderFile, registration.name + "_" + + scriptName + ".groovy"); + FileUtils.writeContent(file, script.getValue()); + } + } + } catch (ForbiddenException e) { + // ignore forbidden exceptions + } catch (IOException e) { + logger.warn(MessageFormat.format( + "Failed to retrieve SCRIPTS from federated gitblit ({0} @ {1})", + registration.name, registration.url), e); + } + } + + /** + * Sends a status acknowledgment to the origin Gitblit instance. This + * includes the results of the federated pull. + * + * @param registration + * @throws Exception + */ + private void sendStatusAcknowledgment(FederationModel registration) throws Exception { + if (!registration.sendStatus) { + // skip status acknowledgment + return; + } + InetAddress addr = InetAddress.getLocalHost(); + String federationName = gitblit.getSettings().getString(Keys.federation.name, null); + if (StringUtils.isEmpty(federationName)) { + federationName = addr.getHostName(); + } + FederationUtils.acknowledgeStatus(addr.getHostAddress(), registration); + logger.info(MessageFormat.format("Pull status sent to {0}", registration.url)); + } +}
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