Move LoadingPhaseRunner.Callback to the top-level class LoadingCallback.

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MOS_MIGRATED_REVID=106839024

1 files changed, 40 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/pkgcache/LoadingCallback.java b/src/main/java/com/google/devtools/build/lib/pkgcache/LoadingCallback.java
new file mode 100644
index 0000000000..5b4538399c
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/pkgcache/LoadingCallback.java
@@ -0,0 +1,40 @@
+// Copyright 2015 The Bazel Authors. All rights reserved.
+//
+// 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.devtools.build.lib.pkgcache;
+
+import com.google.devtools.build.lib.cmdline.PackageIdentifier;
+import com.google.devtools.build.lib.packages.Target;
+
+import java.util.Collection;
+import java.util.Set;
+
+/**
+ * A callback interface to notify the caller about specific events.
+ * TODO(bazel-team): maybe we should use the EventBus instead?
+ */
+public interface LoadingCallback {
+  /**
+   * Called after the target patterns have been resolved to give the caller a chance to validate
+   * the list before proceeding.
+   */
+  void notifyTargets(Collection<Target> targets) throws LoadingFailedException;
+
+  /**
+   * Called after loading has finished, to notify the caller about the visited packages.
+   *
+   * <p>The set of visited packages is the set of packages in the transitive closure of the
+   * union of the top level targets.
+   */
+  void notifyVisitedPackages(Set<PackageIdentifier> visitedPackages);
+}
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