blob: 3ae9598d650b80f3e7c365ac1c5d4f010f86ff14 [file] [log] [blame]
// 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.logging;
import com.google.common.base.Enums;
import com.google.common.hash.Hasher;
import com.google.common.hash.Hashing;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.server.util.time.TimeUtil;
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 enum Type {
RECEIVE_ID,
SUBMISSION_ID,
TRACE_ID;
static boolean isId(String id) {
return id != null && Enums.getIfPresent(Type.class, id).isPresent();
}
}
public static boolean isSet() {
return LoggingContext.getInstance().getTagsAsMap().keySet().stream().anyMatch(Type::isId);
}
private final String str;
public RequestId() {
this(null);
}
public RequestId(@Nullable String resourceId) {
Hasher h = Hashing.murmur3_128().newHasher();
h.putLong(Thread.currentThread().getId()).putUnencodedChars(MACHINE_ID);
str =
(resourceId != null ? resourceId + "-" : "")
+ TimeUtil.now().toEpochMilli()
+ "-"
+ h.hash().toString().substring(0, 8);
}
@Override
public String toString() {
return str;
}
public String toStringForStorage() {
return str;
}
}