1 files changed, 107 insertions, 0 deletions
diff --git a/java/com/google/gerrit/server/AuditEvent.java b/java/com/google/gerrit/server/AuditEvent.java
new file mode 100644
index 0000000000..773a307aa6
--- /dev/null
+++ b/java/com/google/gerrit/server/AuditEvent.java
@@ -0,0 +1,107 @@
+// Copyright (C) 2012 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;
+
+import static java.util.Objects.requireNonNull;
+
+import com.google.auto.value.AutoValue;
+import com.google.common.base.MoreObjects;
+import com.google.common.collect.ImmutableListMultimap;
+import com.google.common.collect.ListMultimap;
+import com.google.gerrit.server.util.time.TimeUtil;
+
+public class AuditEvent {
+
+  public static final String UNKNOWN_SESSION_ID = "000000000000000000000000000";
+  protected static final ImmutableListMultimap<String, ?> EMPTY_PARAMS = ImmutableListMultimap.of();
+
+  public final String sessionId;
+  public final CurrentUser who;
+  public final long when;
+  public final String what;
+  public final ListMultimap<String, ?> params;
+  public final Object result;
+  public final long timeAtStart;
+  public final long elapsed;
+  public final UUID uuid;
+
+  @AutoValue
+  public abstract static class UUID {
+    private static UUID create() {
+      return new AutoValue_AuditEvent_UUID(
+          String.format("audit:%s", java.util.UUID.randomUUID().toString()));
+    }
+
+    public abstract String uuid();
+  }
+
+  /**
+   * Creates a new audit event with results
+   *
+   * @param sessionId session id the event belongs to
+   * @param who principal that has generated the event
+   * @param what object of the event
+   * @param when time-stamp of when the event started
+   * @param params parameters of the event
+   * @param result result of the event
+   */
+  public AuditEvent(
+      String sessionId,
+      CurrentUser who,
+      String what,
+      long when,
+      ListMultimap<String, ?> params,
+      Object result) {
+    requireNonNull(what, "what is a mandatory not null param !");
+
+    this.sessionId = MoreObjects.firstNonNull(sessionId, UNKNOWN_SESSION_ID);
+    this.who = who;
+    this.what = what;
+    this.when = when;
+    this.timeAtStart = this.when;
+    this.params = MoreObjects.firstNonNull(params, EMPTY_PARAMS);
+    this.uuid = UUID.create();
+    this.result = result;
+    this.elapsed = TimeUtil.nowMs() - timeAtStart;
+  }
+
+  @Override
+  public int hashCode() {
+    return uuid.hashCode();
+  }
+
+  @Override
+  public boolean equals(Object obj) {
+    if (this == obj) {
+      return true;
+    }
+    if (obj == null) {
+      return false;
+    }
+    if (getClass() != obj.getClass()) {
+      return false;
+    }
+
+    AuditEvent other = (AuditEvent) obj;
+    return this.uuid.equals(other.uuid);
+  }
+
+  @Override
+  public String toString() {
+    return String.format(
+        "AuditEvent UUID:%s, SID:%s, TS:%d, who:%s, what:%s",
+        uuid.uuid(), sessionId, when, who, what);
+  }
+}