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// Copyright (C) 2009 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.pgm.init;
import com.google.gerrit.common.FileUtil;
import com.google.gerrit.pgm.init.api.ConsoleUI;
import com.google.gerrit.pgm.init.api.InitFlags;
import com.google.gerrit.pgm.init.api.InitStep;
import com.google.gerrit.pgm.init.api.Section;
import com.google.gerrit.server.config.SitePaths;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
/** Initialize the {@code cache} configuration section. */
@Singleton
class InitCache implements InitStep {
private final ConsoleUI ui;
private final InitFlags flags;
private final SitePaths site;
private final Section cache;
@Inject
InitCache(
final ConsoleUI ui,
final InitFlags flags,
final SitePaths site,
final Section.Factory sections) {
this.ui = ui;
this.flags = flags;
this.site = site;
this.cache = sections.get("cache", null);
}
@Override
public void run() {
ui.header("Cache");
String path = cache.get("directory");
if (path != null && path.isEmpty()) {
// Explicitly set to empty implies the administrator has
// disabled the on disk cache and doesn't want it enabled.
//
return;
}
if (path == null) {
path = "cache";
cache.set("directory", path);
}
Path loc = site.resolve(path);
FileUtil.mkdirsOrDie(loc, "cannot create cache.directory");
List<Path> cacheFiles = new ArrayList<>();
try (DirectoryStream<Path> stream = Files.newDirectoryStream(loc, "*.{lock,h2,trace}.db")) {
for (Path entry : stream) {
cacheFiles.add(entry);
}
} catch (IOException e) {
ui.message("IO error during cache directory scan");
return;
}
if (!cacheFiles.isEmpty()) {
for (Path entry : cacheFiles) {
if (flags.deleteCaches || ui.yesno(false, "Delete cache file %s", entry)) {
try {
Files.deleteIfExists(entry);
} catch (IOException e) {
ui.message("Could not delete " + entry);
}
}
}
}
}
}
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