com.google.gerrit.server.config.GerritInstanceNameProvider Maven / Gradle / Ivy
// Copyright (C) 2018 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.gerrit.common.Nullable;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.net.MalformedURLException;
import java.net.URL;
import org.eclipse.jgit.lib.Config;
import org.eclipse.jgit.util.SystemReader;
/** Provides {@link GerritInstanceName} from {@code gerrit.name}. */
@Singleton
public class GerritInstanceNameProvider implements Provider {
private final String instanceName;
@Inject
public GerritInstanceNameProvider(
@GerritServerConfig Config config, @CanonicalWebUrl @Nullable String canonicalUrl) {
this.instanceName = getInstanceName(config, canonicalUrl);
}
@Override
public String get() {
return instanceName;
}
private static String getInstanceName(Config config, String canonicalUrl) {
String instanceName = config.getString("gerrit", null, "instanceName");
if (instanceName != null) {
return instanceName;
}
return extractInstanceName(canonicalUrl);
}
private static String extractInstanceName(String canonicalUrl) {
if (canonicalUrl != null) {
try {
return new URL(canonicalUrl).getHost();
} catch (MalformedURLException e) {
// Try something else.
}
}
// Fall back onto whatever the local operating system thinks
// this server is called. We hopefully didn't get here as a
// good admin would have configured the canonical url.
//
return SystemReader.getInstance().getHostname();
}
}