com.google.gerrit.server.config.DownloadConfig Maven / Gradle / Ivy
// Copyright (C) 2010 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.config;
import com.google.common.collect.ImmutableSet;
import com.google.gerrit.entities.CoreDownloadSchemes;
import com.google.gerrit.extensions.client.GeneralPreferencesInfo.DownloadCommand;
import com.google.gerrit.server.change.ArchiveFormatInternal;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.List;
import org.eclipse.jgit.lib.Config;
/**
* Download protocol from {@code gerrit.config}.
*
* Only used to configure the built-in set of schemes and commands in the core download-commands
* plugin; not used by other plugins.
*/
@Singleton
public class DownloadConfig {
private final ImmutableSet downloadSchemes;
private final ImmutableSet downloadCommands;
private final ImmutableSet archiveFormats;
@Inject
DownloadConfig(@GerritServerConfig Config cfg) {
String[] allSchemes = cfg.getStringList("download", null, "scheme");
if (allSchemes.length == 0) {
downloadSchemes =
ImmutableSet.of(
CoreDownloadSchemes.SSH, CoreDownloadSchemes.HTTP, CoreDownloadSchemes.ANON_HTTP);
} else {
List normalized = new ArrayList<>(allSchemes.length);
for (String s : allSchemes) {
String core = toCoreScheme(s);
if (core == null) {
throw new IllegalArgumentException("not a core download scheme: " + s);
}
normalized.add(core);
}
downloadSchemes = ImmutableSet.copyOf(normalized);
}
DownloadCommand[] downloadCommandValues = DownloadCommand.values();
List allCommands =
ConfigUtil.getEnumList(cfg, "download", null, "command", downloadCommandValues, null);
if (isOnlyNull(allCommands)) {
downloadCommands = ImmutableSet.copyOf(downloadCommandValues);
} else {
downloadCommands = ImmutableSet.copyOf(allCommands);
}
String v = cfg.getString("download", null, "archive");
if (v == null) {
archiveFormats = ImmutableSet.copyOf(EnumSet.allOf(ArchiveFormatInternal.class));
} else if (v.isEmpty() || "off".equalsIgnoreCase(v)) {
archiveFormats = ImmutableSet.of();
} else {
archiveFormats =
ImmutableSet.copyOf(
ConfigUtil.getEnumList(cfg, "download", null, "archive", ArchiveFormatInternal.TGZ));
}
}
private static boolean isOnlyNull(List list) {
return list.size() == 1 && list.get(0) == null;
}
private static String toCoreScheme(String s) {
try {
Field f = CoreDownloadSchemes.class.getField(s.toUpperCase());
int m = Modifier.PUBLIC | Modifier.STATIC | Modifier.FINAL;
if ((f.getModifiers() & m) == m && f.getType() == String.class) {
return (String) f.get(null);
}
return null;
} catch (NoSuchFieldException
| SecurityException
| IllegalArgumentException
| IllegalAccessException e) {
return null;
}
}
/** Scheme used to download. */
public ImmutableSet getDownloadSchemes() {
return downloadSchemes;
}
/** Command used to download. */
public ImmutableSet getDownloadCommands() {
return downloadCommands;
}
/** Archive formats for downloading. */
public ImmutableSet getArchiveFormats() {
return archiveFormats;
}
}