1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
// Copyright 2015 Google Inc. 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.bazel.repository;
import com.google.common.base.Joiner;
import com.google.devtools.build.lib.bazel.repository.DecompressorValue.DecompressorDescriptor;
import com.google.devtools.build.lib.bazel.repository.RepositoryFunction.RepositoryFunctionException;
import com.google.devtools.build.lib.vfs.FileSystemUtils;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.skyframe.SkyFunction;
import com.google.devtools.build.skyframe.SkyFunctionException.Transience;
import com.google.devtools.build.skyframe.SkyFunctionName;
import com.google.devtools.build.skyframe.SkyKey;
import com.google.devtools.build.skyframe.SkyValue;
import java.io.IOException;
import java.nio.charset.Charset;
import javax.annotation.Nullable;
/**
* Creates a repository for a jar file.
*/
public class JarFunction implements SkyFunction {
public static final SkyFunctionName NAME = SkyFunctionName.create("JAR_FUNCTION");
/**
* The .jar can be used compressed, so this just exposes it in a way Bazel can use.
*
* <p>It moves the jar from some-name/x/y/z/foo.jar to some-name/jar/foo.jar and creates a
* BUILD file containing one entry: the .jar.</p>
*/
@Override
@Nullable
public SkyValue compute(SkyKey skyKey, Environment env) throws RepositoryFunctionException {
DecompressorDescriptor descriptor = (DecompressorDescriptor) skyKey.argument();
// Example: archiveFile is external/some-name/foo.jar.
String baseName = descriptor.archivePath().getBaseName();
try {
FileSystemUtils.createDirectoryAndParents(descriptor.repositoryPath());
// external/some-name/WORKSPACE.
Path workspaceFile = descriptor.repositoryPath().getRelative("WORKSPACE");
FileSystemUtils.writeContent(workspaceFile, Charset.forName("UTF-8"), String.format(
"# DO NOT EDIT: automatically generated WORKSPACE file for %s rule %s\n",
descriptor.targetKind(), descriptor.targetName()));
// external/some-name/jar.
Path jarDirectory = descriptor.repositoryPath().getRelative(getPackageName());
FileSystemUtils.createDirectoryAndParents(jarDirectory);
// external/some-name/repository/jar/foo.jar is a symbolic link to the jar in
// external/some-name.
Path jarSymlink = jarDirectory.getRelative(baseName);
if (!jarSymlink.exists()) {
jarSymlink.createSymbolicLink(descriptor.archivePath());
}
// external/some-name/repository/jar/BUILD defines the //jar target.
Path buildFile = jarDirectory.getRelative("BUILD");
FileSystemUtils.writeLinesAs(
buildFile,
Charset.forName("UTF-8"),
"# DO NOT EDIT: automatically generated BUILD file for "
+ descriptor.targetKind()
+ " rule "
+ descriptor.targetName(),
createBuildFile(baseName));
} catch (IOException e) {
throw new RepositoryFunctionException(new IOException(
"Error auto-creating jar repo structure: " + e.getMessage()), Transience.TRANSIENT);
}
return new DecompressorValue(descriptor.repositoryPath());
}
protected String getPackageName() {
return "jar";
}
protected String createBuildFile(String baseName) {
return Joiner.on("\n")
.join(
"java_import(",
" name = 'jar',",
" jars = ['" + baseName + "'],",
" visibility = ['//visibility:public']",
")");
}
@Override
@Nullable
public String extractTag(SkyKey skyKey) {
return null;
}
}
|
