diff options
Diffstat (limited to 'src/main/java/com/google/devtools/build/lib/actions/cache/Metadata.java')
-rw-r--r-- | src/main/java/com/google/devtools/build/lib/actions/cache/Metadata.java | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/actions/cache/Metadata.java b/src/main/java/com/google/devtools/build/lib/actions/cache/Metadata.java deleted file mode 100644 index b9a137d248..0000000000 --- a/src/main/java/com/google/devtools/build/lib/actions/cache/Metadata.java +++ /dev/null @@ -1,72 +0,0 @@ -// Copyright 2014 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.actions.cache; - -import com.google.devtools.build.lib.actions.FileStateType; -import javax.annotation.Nullable; - -/** - * An interface to represent the state of a file system object for the execution phase. This is not - * used by Skyframe for invalidation, it is primarily used by the action cache and the various - * {@link com.google.devtools.build.lib.exec.SpawnRunner} implementations. - */ -public interface Metadata { - /** - * Marker interface for singleton implementations of the Metadata interface. This is only needed - * for a correct implementation of {@code equals}. - */ - public interface Singleton { - } - - /** - * The type of the underlying file system object. If it is a regular file, then it is - * guaranteed to have a digest. Otherwise it does not have a digest. - */ - FileStateType getType(); - - /** - * Returns a digest of the content of the underlying file system object; must always return a - * non-null value for instances of type {@link FileStateType#REGULAR_FILE}. Otherwise may return - * null. - * - * <p>All instances of this interface must either have a digest or return a last-modified time. - * Clients should prefer using the digest for content identification (e.g., for caching), and only - * fall back to the last-modified time if no digest is available. - * - * <p>The return value is owned by this object and must not be modified. - */ - @Nullable - byte[] getDigest(); - - /** Returns the file's size, or 0 if the underlying file system object is not a file. */ - // TODO(ulfjack): Throw an exception if it's not a file. - long getSize(); - - /** - * Returns the last modified time; see the documentation of {@link #getDigest} for when this can - * and should be called. - */ - long getModifiedTime(); - - /** - * Index used to resolve remote files. - * - * <p>0 indicates that no such information is available which can mean that it's either a local - * file or empty. - */ - default int getLocationIndex() { - return 0; - } -} |