1 files changed, 0 insertions, 125 deletions
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/update/ChainedReceiveCommands.java b/gerrit-server/src/main/java/com/google/gerrit/server/update/ChainedReceiveCommands.java
deleted file mode 100644
index f5f8b1d8a2..0000000000
--- a/gerrit-server/src/main/java/com/google/gerrit/server/update/ChainedReceiveCommands.java
+++ /dev/null
@@ -1,125 +0,0 @@
-// 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.update;
-
-import static com.google.common.base.Preconditions.checkArgument;
-import static com.google.common.base.Preconditions.checkNotNull;
-
-import com.google.gerrit.server.git.RefCache;
-import com.google.gerrit.server.git.RepoRefCache;
-import java.io.IOException;
-import java.util.Collections;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import java.util.Optional;
-import org.eclipse.jgit.lib.BatchRefUpdate;
-import org.eclipse.jgit.lib.ObjectId;
-import org.eclipse.jgit.lib.Repository;
-import org.eclipse.jgit.transport.ReceiveCommand;
-
-/**
- * Collection of {@link ReceiveCommand}s that supports multiple updates per ref.
- *
- * <p>The underlying behavior of {@link BatchRefUpdate} is undefined (an implementations vary) when
- * more than one command per ref is added. This class works around that limitation by allowing
- * multiple updates per ref, as long as the previous new SHA-1 matches the next old SHA-1.
- */
-public class ChainedReceiveCommands implements RefCache {
-  private final Map<String, ReceiveCommand> commands = new LinkedHashMap<>();
-  private final RepoRefCache refCache;
-
-  public ChainedReceiveCommands(Repository repo) {
-    this(new RepoRefCache(repo));
-  }
-
-  public ChainedReceiveCommands(RepoRefCache refCache) {
-    this.refCache = checkNotNull(refCache);
-  }
-
-  public RepoRefCache getRepoRefCache() {
-    return refCache;
-  }
-
-  public boolean isEmpty() {
-    return commands.isEmpty();
-  }
-
-  /**
-   * Add a command.
-   *
-   * @param cmd command to add. If a command has been previously added for the same ref, the new
-   *     SHA-1 of the most recent previous command must match the old SHA-1 of this command.
-   */
-  public void add(ReceiveCommand cmd) {
-    checkArgument(!cmd.getOldId().equals(cmd.getNewId()), "ref update is a no-op: %s", cmd);
-    ReceiveCommand old = commands.get(cmd.getRefName());
-    if (old == null) {
-      commands.put(cmd.getRefName(), cmd);
-      return;
-    }
-    checkArgument(
-        old.getResult() == ReceiveCommand.Result.NOT_ATTEMPTED,
-        "cannot chain ref update %s after update %s with result %s",
-        cmd,
-        old,
-        old.getResult());
-    checkArgument(
-        cmd.getOldId().equals(old.getNewId()),
-        "cannot chain ref update %s after update %s with different new ID",
-        cmd,
-        old);
-    commands.put(
-        cmd.getRefName(), new ReceiveCommand(old.getOldId(), cmd.getNewId(), cmd.getRefName()));
-  }
-
-  /**
-   * Get the latest value of a ref according to this sequence of commands.
-   *
-   * <p>After the value for a ref is read from the repo once, it is cached as in {@link
-   * RepoRefCache}.
-   *
-   * @see RefCache#get(String)
-   */
-  @Override
-  public Optional<ObjectId> get(String refName) throws IOException {
-    ReceiveCommand cmd = commands.get(refName);
-    if (cmd != null) {
-      return !cmd.getNewId().equals(ObjectId.zeroId())
-          ? Optional.of(cmd.getNewId())
-          : Optional.empty();
-    }
-    return refCache.get(refName);
-  }
-
-  /**
-   * Add commands from this instance to a native JGit batch update.
-   *
-   * <p>Exactly one command per ref will be added to the update. The old SHA-1 will be the old SHA-1
-   * of the first command added to this instance for that ref; the new SHA-1 will be the new SHA-1
-   * of the last command.
-   *
-   * @param bru batch update
-   */
-  public void addTo(BatchRefUpdate bru) {
-    for (ReceiveCommand cmd : commands.values()) {
-      bru.addCommand(cmd);
-    }
-  }
-
-  /** @return an unmodifiable view of commands. */
-  public Map<String, ReceiveCommand> getCommands() {
-    return Collections.unmodifiableMap(commands);
-  }
-}