com.google.gerrit.server.schema.Schema_81.java Source code

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Here is the source code for com.google.gerrit.server.schema.Schema_81.java

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// Copyright (C) 2013 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.google.gerrit.server.schema;

import com.google.gerrit.common.data.AccessSection;
import com.google.gerrit.common.data.Permission;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.GerritPersonIdent;
import com.google.gerrit.server.config.AllProjectsName;
import com.google.gerrit.server.config.SitePaths;
import com.google.gerrit.server.extensions.events.GitReferenceUpdated;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.git.MetaDataUpdate;
import com.google.gerrit.server.git.ProjectConfig;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import com.google.inject.Provider;

import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.lib.Repository;

import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.sql.SQLException;

public class Schema_81 extends SchemaVersion {

    private final File pluginsDir;
    private final GitRepositoryManager mgr;
    private final AllProjectsName allProjects;
    private final PersonIdent serverUser;

    @Inject
    Schema_81(Provider<Schema_80> prior, SitePaths sitePaths, AllProjectsName allProjects, GitRepositoryManager mgr,
            @GerritPersonIdent PersonIdent serverUser) {
        super(prior);
        this.pluginsDir = sitePaths.plugins_dir;
        this.mgr = mgr;
        this.allProjects = allProjects;
        this.serverUser = serverUser;
    }

    @Override
    protected void migrateData(ReviewDb db, UpdateUI ui) throws OrmException, SQLException {
        try {
            migrateStartReplicationCapability(db, scanForReplicationPlugin());
        } catch (RepositoryNotFoundException e) {
            throw new OrmException(e);
        } catch (SQLException e) {
            throw new OrmException(e);
        } catch (IOException e) {
            throw new OrmException(e);
        } catch (ConfigInvalidException e) {
            throw new OrmException(e);
        }
    }

    private File[] scanForReplicationPlugin() {
        File[] matches = null;
        if (pluginsDir != null && pluginsDir.exists()) {
            matches = pluginsDir.listFiles(new FileFilter() {
                @Override
                public boolean accept(File pathname) {
                    String n = pathname.getName();
                    return (n.endsWith(".jar") || n.endsWith(".jar.disabled")) && pathname.isFile()
                            && n.indexOf("replication") >= 0;
                }
            });
        }
        return matches;
    }

    private void migrateStartReplicationCapability(ReviewDb db, File[] matches)
            throws SQLException, RepositoryNotFoundException, IOException, ConfigInvalidException {
        Description d = new Description();
        if (matches == null || matches.length == 0) {
            d.what = Description.Action.REMOVE;
        } else {
            d.what = Description.Action.RENAME;
            d.prefix = nameOf(matches[0]);
        }
        migrateStartReplicationCapability(db, d);
    }

    private void migrateStartReplicationCapability(ReviewDb db, Description d)
            throws SQLException, RepositoryNotFoundException, IOException, ConfigInvalidException {
        Repository git = mgr.openRepository(allProjects);
        try {
            MetaDataUpdate md = new MetaDataUpdate(GitReferenceUpdated.DISABLED, allProjects, git);
            md.getCommitBuilder().setAuthor(serverUser);
            md.getCommitBuilder().setCommitter(serverUser);
            ProjectConfig config = ProjectConfig.read(md);
            AccessSection capabilities = config.getAccessSection(AccessSection.GLOBAL_CAPABILITIES);
            Permission startReplication = capabilities.getPermission("startReplication");
            if (startReplication == null) {
                return;
            }
            String msg = null;
            switch (d.what) {
            case REMOVE:
                capabilities.remove(startReplication);
                msg = "Remove startReplication capability, plugin not installed\n";
                break;
            case RENAME:
                capabilities.remove(startReplication);
                Permission pluginStartReplication = capabilities
                        .getPermission(String.format("%s-startReplication", d.prefix), true);
                pluginStartReplication.setRules(startReplication.getRules());
                msg = "Rename startReplication capability to match updated plugin\n";
                break;
            }
            config.replace(capabilities);
            md.setMessage(msg);
            config.commit(md);
        } finally {
            git.close();
        }
    }

    private static String nameOf(File jar) {
        String name = jar.getName();
        if (name.endsWith(".disabled")) {
            name = name.substring(0, name.lastIndexOf('.'));
        }
        int ext = name.lastIndexOf('.');
        return 0 < ext ? name.substring(0, ext) : name;
    }

    private static class Description {
        private enum Action {
            REMOVE, RENAME
        }

        Action what;
        String prefix;
    }
}