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// Copyright (C) 2016 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.util;
import com.google.common.hash.Hasher;
import com.google.common.hash.Hashing;
import com.google.gerrit.common.TimeUtil;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.reviewdb.client.Project;
import java.net.InetAddress;
import java.net.UnknownHostException;
/** Unique identifier for an end-user request, used in logs and similar. */
public class RequestId {
private static final String MACHINE_ID;
static {
String id;
try {
id = InetAddress.getLocalHost().getHostAddress();
} catch (UnknownHostException e) {
id = "unknown";
}
MACHINE_ID = id;
}
public static RequestId forChange(Change c) {
return new RequestId(c.getId().toString());
}
public static RequestId forProject(Project.NameKey p) {
return new RequestId(p.toString());
}
private final String str;
@SuppressWarnings("deprecation") // Use Hashing.sha1 for compatibility.
private RequestId(String resourceId) {
Hasher h = Hashing.sha1().newHasher();
h.putLong(Thread.currentThread().getId()).putUnencodedChars(MACHINE_ID);
str =
"["
+ resourceId
+ "-"
+ TimeUtil.nowTs().getTime()
+ "-"
+ h.hash().toString().substring(0, 8)
+ "]";
}
@Override
public String toString() {
return str;
}
public String toStringForStorage() {
return str.substring(1, str.length() - 1);
}
}
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